WO2018160622A1 - Compositions and methods for car t cell therapy - Google Patents

Compositions and methods for car t cell therapy Download PDF

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Publication number
WO2018160622A1
WO2018160622A1 PCT/US2018/020095 US2018020095W WO2018160622A1 WO 2018160622 A1 WO2018160622 A1 WO 2018160622A1 US 2018020095 W US2018020095 W US 2018020095W WO 2018160622 A1 WO2018160622 A1 WO 2018160622A1
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Prior art keywords
car
cancer
clauses
cells
patient
Prior art date
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PCT/US2018/020095
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English (en)
French (fr)
Inventor
Philip Stewart Low
Haiyan CHU
Yong Gu Lee
Yingjuan J. LU
Christopher Paul Leamon
Leroy W. WHEELER II
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Purdue Research Foundation
Endocyte Inc
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Purdue Research Foundation
Endocyte Inc
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Priority to ES18761400T priority Critical patent/ES3010559T3/es
Priority to US16/489,455 priority patent/US11850262B2/en
Priority to JP2019547107A priority patent/JP7178355B2/ja
Priority to CN201880028009.XA priority patent/CN110582288B/zh
Priority to EP18761400.3A priority patent/EP3589295B1/en
Priority to EP24199482.1A priority patent/EP4501352A3/en
Application filed by Purdue Research Foundation, Endocyte Inc filed Critical Purdue Research Foundation
Publication of WO2018160622A1 publication Critical patent/WO2018160622A1/en
Anticipated expiration legal-status Critical
Priority to US16/921,400 priority patent/US11759480B2/en
Priority to JP2022181982A priority patent/JP7585280B2/ja
Priority to US18/494,613 priority patent/US20240165159A1/en
Priority to JP2024194196A priority patent/JP2025024006A/ja
Ceased legal-status Critical Current

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    • C07K14/705—Receptors; Cell surface antigens; Cell surface determinants
    • C07K14/70503—Immunoglobulin superfamily
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    • A61K40/00—Cellular immunotherapy
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    • A61K40/11—T-cells, e.g. tumour infiltrating lymphocytes [TIL] or regulatory T [Treg] cells; Lymphokine-activated killer [LAK] cells
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    • A61K47/50—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates
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    • A61K47/55—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an organic compound the modifying agent being also a pharmacologically or therapeutically active agent, i.e. the entire conjugate being a codrug
    • A61K47/551—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an organic compound the modifying agent being also a pharmacologically or therapeutically active agent, i.e. the entire conjugate being a codrug one of the codrug's components being a vitamin, e.g. niacinamide, vitamin B3, cobalamin, vitamin B12, folate, vitamin A or retinoic acid
    • A—HUMAN NECESSITIES
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    • C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K16/00—Immunoglobulins [IG], e.g. monoclonal or polyclonal antibodies
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    • C07K16/28—Immunoglobulins [IG], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants
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    • C07K16/28—Immunoglobulins [IG], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants
    • C07K16/30—Immunoglobulins [IG], e.g. monoclonal or polyclonal antibodies against material from animals or humans against receptors, cell surface antigens or cell surface determinants from tumour cells
    • A—HUMAN NECESSITIES
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • A61K2239/31—Indexing codes associated with cellular immunotherapy of group A61K40/00 characterized by the route of administration
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    • A—HUMAN NECESSITIES
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    • C07K—PEPTIDES
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    • C07K2317/60—Immunoglobulins specific features characterized by non-natural combinations of immunoglobulin fragments
    • C07K2317/62—Immunoglobulins specific features characterized by non-natural combinations of immunoglobulin fragments comprising only variable region components
    • C07K2317/622—Single chain antibody (scFv)
    • C—CHEMISTRY; METALLURGY
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    • C07K—PEPTIDES
    • C07K2319/00—Fusion polypeptide
    • C07K2319/01—Fusion polypeptide containing a localisation/targetting motif
    • C07K2319/03—Fusion polypeptide containing a localisation/targetting motif containing a transmembrane segment
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K2319/00—Fusion polypeptide
    • C07K2319/01—Fusion polypeptide containing a localisation/targetting motif
    • C07K2319/033—Fusion polypeptide containing a localisation/targetting motif containing a motif for targeting to the internal surface of the plasma membrane, e.g. containing a myristoylation motif

Definitions

  • the present disclosure relates to methods of treating a patient with a cancer by administering to the patient a composition comprising CAR T cells and administering to the patient a small molecule linked to a targeting moiety by a linker.
  • the disclosure also relates to compositions for use in such methods.
  • Immunotherapy based on adoptive transfer of lymphocytes (e.g., T cells) into a patient is a valuable therapy in the treatment of cancer and other diseases.
  • Important advancements have been made in the development of immunotherapies based on adoptive transfer of lymphocytes.
  • T cells expressing chimeric antigen receptors (CAR T cells).
  • the chimeric antigen receptor (CAR) is a genetically engineered receptor that is designed to target a specific antigen, for example, a tumor antigen. This targeting can result in cytotoxicity against the tumor, for example, such that CAR T cells expressing CARs can target and kill tumors via the specific tumor antigens.
  • First generation CARs are composed of a recognition region, e.g., a single chain fragment variable (scFv) region derived from an antibody for recognition and binding to the antigen expressed by the tumor, and an activation signaling domain, e.g., the ⁇ 3 ⁇ chain of T cells can serve as a T cell activation signal in CARs.
  • a recognition region e.g., a single chain fragment variable (scFv) region derived from an antibody for recognition and binding to the antigen expressed by the tumor
  • an activation signaling domain e.g., the ⁇ 3 ⁇ chain of T cells can serve as a T cell activation signal in CARs.
  • a co- stimulation domain e.g., CD137, CD28 or CD 134
  • second generation CARs to achieve prolonged activation of T cells in vivo.
  • Addition of a co-stimulation domain enhances the in vivo proliferation and survival of T cells containing CARs, and initial clinical data have shown that such constructs are promising therapeutic agents in the treatment of diseases, such as cancer.
  • CAR T cell therapies Although improvements have been made in CAR T cell therapies, several problems remain. First, 'off-target' toxicity may occur due to normal cells that express the antigen targeted by the CAR T cells (e.g., a tumor- associated antigen). Second, unregulated CAR T cell activation may be found where the rapid and uncontrolled elimination of diseased cells (e.g., cancer cells) by CAR T cells induces a constellation of metabolic disturbances, called tumor lysis syndrome, or cytokine release syndrome (CRS), which can be fatal to patients. Tumor lysis syndrome and CRS can result due to administered CAR T cells that cannot be easily regulated, and are activated uncontrollably.
  • diseased cells e.g., cancer cells
  • CRS cytokine release syndrome
  • CAR T cells show great promise as a tool in the treatment of diseases, such as cancer
  • additional CAR T cell therapies are needed that provide reduced off -target toxicity, and more precise control of CAR T cell activation.
  • a small molecule ligand linked to a targeting moiety by a linker is used as a bridge between the cancer and the CAR T cells directing the CAR T cells to the cancer for amelioration of the cancer.
  • the "small molecule ligand” can be, for example, a folate, DUPA, an NK-1R ligand, a CAIX ligand, a ligand of gamma glutamyl transpeptidase, an NKG2D ligand, or a CCK2R ligand, each of which is a small molecule ligand that binds specifically to cancer cells (i.e., the receptor for these ligands is overexpressed on cancers compared to normal tissues).
  • the "small molecule ligand” is linked to a "targeting moiety” that binds to the CAR expressed by CAR T cells.
  • the "targeting moiety” can be selected, for example, from 2,4-dinitrophenol (DNP), 2,4,6- trinitrophenol (TNP), biotin, digoxigenin, fluorescein, fluorescein isothiocyanate (FITC), NHS-fluorescein, pentafluorophenyl ester (PFP), tetrafluorophenyl ester (TFP), a knottin, a centyrin, and a DARPin.
  • DNP 2,4-dinitrophenol
  • TNP 2,4,6- trinitrophenol
  • biotin biotin
  • digoxigenin fluorescein, fluorescein isothiocyanate
  • FITC fluorescein isothiocyanate
  • NHS-fluorescein pentafluorophenyl ester
  • TFP tetra
  • the "targeting moiety” binds to the recognition region of the genetically engineered CAR expressed by CAR T cells. Accordingly, the recognition region of the CAR (e.g., a single chain fragment variable region (scFv) of an antibody, an Fab, Fv, Fc,(Fab')2 fragment, and the like) is directed to the "targeting moiety.”
  • the small molecule ligand linked to a targeting moiety by a linker acts as a bridge between the cancer and the CAR T cells, directing the CAR T cells to the cancer for amelioration of the cancer.
  • a method of treatment of a cancer comprises i) administering to a patient a compound, or a pharmaceutically acceptable salt thereof, wherein the compound comprises a small molecule ligand linked to a targeting moiety by a linker, ii) administering to the patient a first dose of a CAR T cell composition wherein the CAR T cell composition comprises CAR T cells and wherein the CAR T cells comprise the CAR directed to the targeting moiety, and iii) administering to the patient a second dose of the CAR T cell composition wherein the CAR T cell composition comprises CAR T cells and wherein the CAR T cells comprise the CAR directed to the targeting moiety.
  • a method of treatment of a cancer comprises i) administering to a patient a compound, or a pharmaceutically acceptable salt thereof, wherein the compound comprises a small molecule ligand linked to a targeting moiety by a linker, and ii) administering to the patient a CAR T cell composition comprising CAR T cells wherein the CAR T cells in the composition comprise the CAR directed to the targeting moiety and wherein the CAR T cell composition comprises a mixture of the CAR T cells and non-transformed T cells.
  • a method of treatment of a cancer comprises i) administering to a patient a compound, or a pharmaceutically acceptable salt thereof, wherein the compound comprises a small molecule ligand linked to a targeting moiety by a linker, ii) administering to the patient a CAR T cell composition wherein the CAR T cell composition comprises CAR T cells and wherein the CAR T cells comprise the CAR directed to the targeting moiety, and iii) administering to the patient a folate, a conjugate comprising a folate wherein the conjugate comprising a folate does not comprise a targeting moiety, or an agent that inhibits activation of the CAR T cells.
  • a method of treatment of a cancer comprises i) administering to a patient a compound, or a pharmaceutically acceptable salt thereof, wherein the compound comprises a small molecule ligand linked to a targeting moiety by a linker, and wherein the compound, or the pharmaceutically acceptable salt thereof, is at a dose of about 10 nmoles/kg of body weight of the patient to about 2500 nmoles/kg of body weight of the patient, and ii) administering to the patient a CAR T cell composition comprising CAR T cells wherein the CAR T cells comprise a CAR directed to the targeting moiety, and wherein the CAR T cells are at a dose of about 1 million of the CAR T cells to about 15 million of the CAR T cells.
  • a method of treatment of a cancer is provided.
  • the method comprises i) administering continuously to a patient a compound, or a pharmaceutically acceptable salt thereof, wherein the compound comprises a small molecule ligand linked to a targeting moiety by a linker, ii) administering to the patient a CAR T cell composition comprising CAR T cells wherein the CAR T cells comprise a CAR directed to the targeting moiety, and iii) ending administration of the compound, or the pharmaceutically acceptable salt thereof, to reduce cytokine release syndrome in the patient.
  • a method of treatment of a cancer comprises i) administering to a patient a compound, or a pharmaceutically acceptable salt thereof, wherein the compound comprises a small molecule ligand linked to a targeting moiety by a linker, wherein at least a first dose and a second dose of the compound, or the pharmaceutically acceptable salt thereof, are administered to the patient, wherein the first dose and the second dose are different, wherein the second dose of the compound, or the pharmaceutically acceptable salt thereof, is about 2-fold to about 15000-fold greater in amount than the first dose of the compound, or the pharmaceutically acceptable salt thereof, and ii) administering to the patient a CAR T cell composition comprising CAR T cells wherein the CAR T cells comprise a CAR directed to the targeting moiety.
  • a method of treatment of a cancer comprises i) administering to a patient a compound, or a pharmaceutically acceptable salt thereof, wherein the compound comprises a small molecule ligand linked to a targeting moiety by a linker and wherein the compound, or the pharmaceutically acceptable salt thereof, is administered once weekly to the patient, and ii) administering to the patient a CAR T cell composition comprising CAR T cells wherein the CAR T cells comprise a CAR directed to the targeting moiety.
  • a method of treatment of a cancer is provided.
  • the method comprises i) administering to a patient a first dose of a compound, or a pharmaceutically acceptable salt thereof, wherein the compound comprises a small molecule ligand linked to a targeting moiety by a linker, ii) administering to the patient at least a second dose of the compound, or a pharmaceutically acceptable salt thereof, wherein the second dose of the compound, or the pharmaceutically acceptable salt thereof, is at least about 50 percent lower in amount than the first dose of the compound, or the
  • a CAR T cell composition comprising CAR T cells wherein the CAR T cells comprise a CAR directed to the targeting moiety.
  • a method of treatment of a cancer comprises i) administering to a patient a first dose of a compound, or a pharmaceutically acceptable salt thereof, wherein the compound comprises a small molecule ligand linked to a targeting moiety by a linker and wherein the compound, or the
  • a pharmaceutically acceptable salt thereof is administered to the patient at least about one hour prior to the administration of a CAR T cell composition comprising CAR T cells wherein the CAR T cells comprise a CAR directed to the targeting moiety, ii) then administering to the patient a dose of the CAR T cell composition, and iii) then administering to the patient a second dose of the compound, or the pharmaceutically acceptable salt thereof.
  • a method of treatment of a cancer comprises i) administering to a patient a compound, or a pharmaceutically acceptable salt thereof, wherein the compound comprises a small molecule ligand linked to a targeting moiety by a linker, and ii) administering to the patient a CAR T cell composition wherein the CAR T cell composition comprises CAR T cells and wherein the CAR T cells comprise a CAR directed to the targeting moiety, and wherein the small molecule ligand is a PSMA ligand and the targeting moiety is FITC.
  • the small molecule ligand linked to a targeting moiety by a linker can have the formula
  • a method of treatment of a cancer comprises i) administering to a patient a compound, or a pharmaceutically acceptable salt thereof, wherein the compound comprises a small molecule ligand linked to a targeting moiety by a linker, and ii) administering to the patient a CAR T cell composition wherein the CAR T cell composition comprises CAR T cells and wherein the CAR T cells comprise a CAR directed to the targeting moiety, and wherein the small molecule ligand is a CAIX ligand and the targeting moiety is FITC.
  • the small molecule ligand linked to a targeting moiety by a linker can have the formula
  • a method of treatment of a cancer comprises i) administering to a patient a first compound, or a pharmaceutically acceptable salt thereof, wherein the first compound, or the pharmaceutically acceptable salt thereof, comprises a PSMA ligand linked to FITC by a linker, ii) administering to the patient a second compound, or a pharmaceutically acceptable salt thereof, wherein the second compound, or the pharmaceutically acceptable salt thereof, comprises a CAIX ligand linked to FITC by a linker, and iii) administering to the patient a CAR T cell composition wherein the CAR T cell composition comprises CAR T cells and wherein the CAR T cells comprise a CAR directed to the targeting moiety.
  • the first compound can have the formula
  • a method of treatment of a cancer comprising i) administering to a patient a compound, or a pharmaceutically acceptable salt thereof, wherein the compound comprises a small molecule ligand linked to a targeting moiety by a linker;
  • a CAR T cell composition comprising CAR T cells wherein the CAR T cells comprise the CAR directed to the targeting moiety.
  • the ligand is selected from the group consisting of a folate, DUPA, an NK-IR ligand, a CAIX ligand, a ligand of gamma glutamyl transpeptidase, an NKG2D ligand, and a CCK2R ligand.
  • the targeting moiety is selected from the group consisting of 2,4-dinitrophenol (DNP), 2,4,6-trinitrophenol (TNP), biotin, digoxigenin, fluorescein, fluorescein isothiocyanate (FITC), NHS -fluorescein, pentafluorophenyl ester, tetrafluorophenyl ester, a knottin, a centyrin, and a DARPin.
  • DNP 2,4-dinitrophenol
  • TNP 2,4,6-trinitrophenol
  • biotin digoxigenin
  • fluorescein fluorescein isothiocyanate
  • NHS -fluorescein pentafluorophenyl ester
  • tetrafluorophenyl ester tetrafluorophenyl ester
  • knottin a centyrin
  • DARPin DARPin
  • linker comprises polyethylene glycol (PEG), polyproline, a hydrophilic amino acid, a sugar, an unnatural peptidoglycan, a polyvinylpyrrolidone, pluronic F-127, or a combination thereof.
  • L represents the linker
  • T represents the targeting moiety
  • L comprises a structure having the formula
  • n is an integer from 0 to 200.
  • any one of clauses 1 to 26 wherein the cancer is selected from the group consisting of lung cancer, bone cancer, pancreatic cancer, skin cancer, cancer of the head, cancer of the neck, cutaneous melanoma, intraocular melanoma uterine cancer, ovarian cancer, endometrial cancer, rectal cancer, stomach cancer, colon cancer, breast cancer, triple negative breast cancer, carcinoma of the fallopian tubes, carcinoma of the endometrium, carcinoma of the cervix, carcinoma of the vagina, carcinoma of the vulva, Hodgkin's Disease, cancer of the esophagus, cancer of the small intestine, cancer of the endocrine system, cancer of the thyroid gland, cancer of the parathyroid gland, non-small cell lung cancer, cancer of the adrenal gland, sarcoma of soft tissue, osteosarcoma, cancer of the urethra, prostate cancer, chronic leukemia, acute leukemia, acute myelocytic leukemia, lymphocytic lymphoma,
  • T cell toxicity to the cancer occurs.
  • the first dose of the CAR T cell composition comprises a mixture of the CAR T cells and non- transformed T cells in a ratio selected from about 1:5 of the CAR T cells to the non- transformed T cells, about 1:4 of the CAR T cells to the non-transformed T cells, about 1:3 of the CAR T cells to the non-transformed T cells, about 1:2 of the CAR T cells to the non-transformed T cells, and about 1: 1 of the CAR T cells to the non- transformed T cells.
  • the second dose of the CAR T cell composition comprises a mixture of the CAR T cells and non- transformed T cells in a ratio selected from about 1:5 of the CAR T cells to the non- transformed T cells, about 1:4 of the CAR T cells to the non-transformed T cells, about 1:3 of the CAR T cells to the non-transformed T cells, about 1:2 of the CAR T cells to the non-transformed T cells, and about 1: 1 of the CAR T cells to the non- transformed T cells.
  • the first dose of the CAR T cell composition comprises a mixture of the CAR T cells and non- transformed T cells in a ratio of from about 1:1 to about 1:5 of the CAR T cells to the non-transformed T cells.
  • the second dose of the CAR T cell composition comprises a mixture of the CAR T cells and non- transformed T cells in a ratio of from about 1:1 to 1:5 of the CAR T cells to the non- transformed T cells.
  • a method of treatment of a cancer comprising i) administering to a patient a compound, or a pharmaceutically acceptable salt thereof, wherein the compound comprises a small molecule ligand linked to a targeting moiety by a linker;
  • CAR T cell composition comprises CAR T cells, wherein the CAR T cells comprise a CAR directed to the targeting moiety, and wherein the CAR T cell composition comprises a mixture of the CAR T cells and non-transformed T cells.
  • ligand is selected from the group consisting of a folate, DUPA, an NK- IR ligand, a CAIX ligand, a ligand of gamma glutamyl transpeptidase, an NKG2D ligand, and a CCK2R ligand.
  • the targeting moiety is selected from the group consisting of 2,4-dinitrophenol (DNP), 2,4,6-trinitrophenol (TNP), biotin, digoxigenin, fluorescein, fluorescein isothiocyanate (FITC), NHS -fluorescein, pentafluorophenyl ester, tetrafluorophenyl ester, a knottin, a centyrin, and a DARPin.
  • DNP 2,4-dinitrophenol
  • TNP 2,4,6-trinitrophenol
  • biotin digoxigenin
  • fluorescein fluorescein isothiocyanate
  • NHS -fluorescein pentafluorophenyl ester
  • tetrafluorophenyl ester tetrafluorophenyl ester
  • knottin a centyrin
  • DARPin DARPin
  • linker comprises polyethylene glycol (PEG), polyproline, a hydrophilic amino acid, a sugar, an unnatural peptidoglycan, a polyvinylpyrrolidone, pluronic F-127, or a combination thereof.
  • L represents the linker
  • T represents the targeting moiety
  • L comprises a structure having the formula
  • n is an integer from 0 to 200.
  • any one of clauses 56 to 81 wherein the cancer is selected from the group consisting of lung cancer, bone cancer, pancreatic cancer, skin cancer, cancer of the head, cancer of the neck, cutaneous melanoma, intraocular melanoma uterine cancer, ovarian cancer, endometrial cancer, rectal cancer, stomach cancer, colon cancer, breast cancer, triple negative breast cancer, carcinoma of the fallopian tubes, carcinoma of the endometrium, carcinoma of the cervix, carcinoma of the vagina, carcinoma of the vulva, Hodgkin's Disease, cancer of the esophagus, cancer of the small intestine, cancer of the endocrine system, cancer of the thyroid gland, cancer of the parathyroid gland, non-small cell lung cancer, cancer of the adrenal gland, sarcoma of soft tissue, osteosarcoma, cancer of the urethra, prostate cancer, chronic leukemia, acute leukemia, acute myelocytic leukemia, lymphocytic lymphom
  • CAR has a recognition region and the recognition region of the CAR is a single chain fragment variable (scFv) region of an anti-FITC antibody.
  • scFv single chain fragment variable
  • a compound or a pharmaceutically acceptable salt thereof, wherein the compound comprises a small molecule ligand linked to a targeting moiety by a linker;
  • CAR T cell composition comprises CAR T cells and wherein the CAR T cells comprise a CAR directed to the targeting moiety;
  • a conjugate comprising a folate wherein the conjugate comprising a folate does not comprise a targeting moiety, or an agent that inhibits activation of the CAR T cells.
  • step iii comprises administering a folate.
  • step iii comprises administering folic acid or leucovorin.
  • step iii comprises administering the conjugate comprising a folate.
  • Q is selected from the group consisting of C and CH;
  • X 2 and X 3 are each independently selected from the group consisting of oxygen, sulfur, -C(Z)-, -C(Z)0-, -OC(Z)-, -N(R 4b )-, -C(Z)N(R 4b )-, -N(R 4b )C(Z)-,
  • R 1 is selected-from the group consisting of hydrogen, halo, d-C 12 alkyl, and
  • R 2 , R 3 , R 4 , R 4a , R 4b , R 5 , R 5b , R 6b , and R 7b are each independently selected from the group consisting of hydrogen, halo, Ci-C 12 alkyl, Ci-C 12 alkoxy, Ci-Ci 2 alkanoyl, Ci-C 12 alkenyl, Ci-C 12 alkynyl, (Ci-Ci 2 alkoxy)carbonyl, and (Ci-C 12 alkylamino)carbonyl;
  • R 6 and R 7 are each independently selected from the group consisting of hydrogen, halo, Ci-Ci 2 alkyl, and Ci-Ci 2 alkoxy; or, R 6 and R 7 are taken together to form a carbonyl group;
  • R 6a and R 7a are each independently selected from the group consisting of hydrogen, halo, Ci-Ci 2 alkyl, and Ci-Ci 2 alkoxy; or R 6a and R 7a are taken together to form a carbonyl group;
  • p, r, s, and t are each independently either 0 or 1;
  • * represents an optional covalent bond to the rest of the conjugate, if any additional chemical moieties are part of the folate.
  • the targeting moiety is selected from the group consisting of 2,4-dinitrophenol (DNP), 2,4,6-trinitrophenol (TNP), biotin, digoxigenin, fluorescein, fluorescein isothiocyanate (FITC), NHS -fluorescein, pentafluorophenyl ester, tetrafluorophenyl ester, a knottin, a centyrin, and a DARPin.
  • DNP 2,4-dinitrophenol
  • TNP 2,4,6-trinitrophenol
  • biotin digoxigenin
  • fluorescein fluorescein isothiocyanate
  • NHS -fluorescein NHS -fluorescein
  • pentafluorophenyl ester tetrafluorophenyl ester
  • a knottin a centyrin
  • DARPin DARPin
  • linker comprises polyethylene glycol (PEG), polyproline, a hydrophilic amino acid, a sugar, an unnatural peptidoglycan, a polyvinylpyrrolidone, pluronic F-127, or a combination thereof.
  • L represents the linker
  • T represents the targeting moiety
  • L comprises a structure having the formula
  • n is an inte ⁇ ⁇ er from 0 to 200.
  • n is an integer from 0 to 150.
  • n is an integer from 0 to 110.
  • n is an integer from 0 to 20.
  • n is an integer from 15 to 20.
  • n is an integer from 15 to 110.
  • any one of clauses 108 to 134 wherein the cancer is selected from the group consisting of lung cancer, bone cancer, pancreatic cancer, skin cancer, cancer of the head, cancer of the neck, cutaneous melanoma, intraocular melanoma uterine cancer, ovarian cancer, endometrial cancer, rectal cancer, stomach cancer, colon cancer, breast cancer, triple negative breast cancer, carcinoma of the fallopian tubes, carcinoma of the endometrium, carcinoma of the cervix, carcinoma of the vagina, carcinoma of the vulva, Hodgkin's Disease, cancer of the esophagus, cancer of the small intestine, cancer of the endocrine system, cancer of the thyroid gland, cancer of the parathyroid gland, non-small cell lung cancer, cancer of the adrenal gland, sarcoma of soft tissue, osteosarcoma, cancer of the urethra, prostate cancer, chronic leukemia, acute leukemia, acute myelocytic leukemia, lymphocytic lymphom
  • CAR T cell composition are administered. 147.
  • T cell toxicity to the cancer occurs.
  • T cells comprise a nucleic acid comprising SEQ ID NO: l.
  • T cells comprise a polypeptide comprising SEQ ID NO:2.
  • the CAR T cell composition comprises a mixture of the CAR T cells and non-transformed T cells in a ratio selected from about 1:5 of the CAR T cells to the non-transformed T cells, about 1:4 of the CAR T cells to the non-transformed T cells, about 1:3 of the CAR T cells to the non-transformed T cells, about 1:2 of the CAR T cells to the non- transformed T cells, and about 1:1 of the CAR T cells to the non-transformed T cells.
  • the CAR T cell composition comprises a mixture of the CAR T cells and non-transformed T cells in a ratio selected from about 1:5 of the CAR T cells to the non-transformed T cells, about 1:4 of the CAR T cells to the non-transformed T cells, about 1:3 of the CAR T cells to the non-transformed T cells, about 1:2 of the CAR T cells to the non- transformed T cells, and about 1:1 of the CAR T cells to the non-transformed T cells.
  • the CAR T cell composition comprises a mixture
  • the CAR T cell composition comprises a mixture of the CAR T cells and non-transformed T cells in a ratio of from about 1:1 to about 1:5 of the CAR T cells to the non- transformed T cells.
  • T cell composition comprises a mixture comprising about 10 million of the CAR T cells and about 40 million of the non-transformed T cells.
  • the agent that inhibits activation of the CAR T cells is selected from the group consisting of a lymphocyte-specific protein tyrosine kinase inhibitor, a PI3 kinase inhibitor, an inhibitor of an IL-2 inducible T cell kinase, a JAK inhibitor, a BTK inhibitor, EC2319, and an agent that blocks CAR T cell binding to the compound, or the pharmaceutically acceptable salt thereof, but does not bind to the cancer.
  • the dose of the CAR T cells administered to the patient in the CAR T cell composition is selected from the group consisting of about 1 million, about 2 million, about 3 million, about 4 million, about 5 million, about 6 million, about 7 million, about 8 million, about 9 million, about 10 million, about 11 million, about 12 million, about 12.5 million, about 13 million, about 14 million, and about 15 million of the CAR T cells.
  • fluoresceinamine FITC
  • sodium fluorescein sodium fluorescein
  • a method of treatment of a cancer comprising
  • a compound, or a pharmaceutically acceptable salt thereof wherein the compound comprises a small molecule ligand linked to a targeting moiety by a linker, and wherein the compound, or the pharmaceutically acceptable salt thereof, is at a dose of about 10 nmoles/kg of body weight of the patient to about 2500 nmoles/kg of body weight of the patient;
  • a CAR T cell composition comprising CAR T cells wherein the CAR T cells comprise a CAR directed to the targeting moiety, and wherein the CAR T cells are at a dose of about 1 million of the CAR T cells to about 15 million of the CAR T cells.
  • ligand is selected from the group consisting of a folate, DUPA, an NK-1R ligand, a CAIX ligand, a ligand of gamma glutamyl transpeptidase, an NKG2D ligand, and a CCK2R ligand.
  • the targeting moiety is selected from the group consisting of 2,4-dinitrophenol (DNP), 2,4,6-trinitrophenol (TNP), biotin, digoxigenin, fluorescein, fluorescein isothiocyanate (FITC), NHS -fluorescein, pentafluorophenyl ester, tetrafluorophenyl ester, a knottin, a centyrin, and a DARPin.
  • the targeting moiety is FITC.
  • the linker comprises polyethylene glycol (PEG), polyproline, a hydrophilic amino acid, a sugar, an unnatural peptidoglycan, a polyvinylpyrrolidone, pluronic F-127, or a combination thereof.
  • L represents the linker
  • T represents the targeting moiety
  • L comprises a structure having the formula
  • n is an integer from 0 to 200.
  • any one of clauses 183 to 201 wherein the cancer is selected from the group consisting of lung cancer, bone cancer, pancreatic cancer, skin cancer, cancer of the head, cancer of the neck, cutaneous melanoma, intraocular melanoma uterine cancer, ovarian cancer, endometrial cancer, rectal cancer, stomach cancer, colon cancer, breast cancer, triple negative breast cancer, carcinoma of the fallopian tubes, carcinoma of the endometrium, carcinoma of the cervix, carcinoma of the vagina, carcinoma of the vulva, Hodgkin's Disease, cancer of the esophagus, cancer of the small intestine, cancer of the endocrine system, cancer of the thyroid gland, cancer of the parathyroid gland, non-small cell lung cancer, cancer of the adrenal gland, sarcoma of soft tissue, osteosarcoma, cancer of the urethra, prostate cancer, chronic leukemia, acute leukemia, acute myelocytic leukemia, lymphocytic lympho
  • T cells comprise a nucleic acid comprising SEQ ID NO: l.
  • a method of treatment of a cancer comprising
  • ligand is selected from the group consisting of a folate, DUPA, an NK-1R ligand, a CAIX ligand, a ligand of gamma glutamyl transpeptidase, an NKG2D ligand, and a CCK2R ligand.
  • the targeting moiety is selected from the group consisting of 2,4-dinitrophenol (DNP), 2,4,6-trinitrophenol (TNP), biotin, digoxigenin, fluorescein, fluorescein isothiocyanate (FITC), NHS -fluorescein, pentafluorophenyl ester, tetrafluorophenyl ester, a knottin, a centyrin, and a DARPin.
  • DNP 2,4-dinitrophenol
  • TNP 2,4,6-trinitrophenol
  • biotin digoxigenin
  • fluorescein fluorescein isothiocyanate
  • FITC fluorescein isothiocyanate
  • NHS -fluorescein pentafluorophenyl ester
  • tetrafluorophenyl ester a knottin
  • a centyrin and a DARPin.
  • linker comprises polyethylene glycol (PEG), polyproline, a hydrophilic amino acid, a sugar, an unnatural peptidoglycan, a polyvinylpyrrolidone, pluronic F-127, or a combination thereof.
  • L represents the linker
  • T represents the targeting moiety
  • L comprises a structure having the formula
  • n is an integer from 0 to 200. 223.
  • the linker comprises PEG and the targeting moiety is FITC, or a pharmaceutically acceptable salt thereof.
  • any one of clauses 215 to 232 wherein the administration is by intravenous administration.
  • the cancer is selected from the group consisting of lung cancer, bone cancer, pancreatic cancer, skin cancer, cancer of the head, cancer of the neck, cutaneous melanoma, intraocular melanoma uterine cancer, ovarian cancer, endometrial cancer, rectal cancer, stomach cancer, colon cancer, breast cancer, triple negative breast cancer, carcinoma of the fallopian tubes, carcinoma of the endometrium, carcinoma of the cervix, carcinoma of the vagina, carcinoma of the vulva, Hodgkin's Disease, cancer of the esophagus, cancer of the small intestine, cancer of the endocrine system, cancer of the thyroid gland, cancer of the parathyroid gland, non-small cell lung cancer, cancer of the adrenal gland, sarcoma of soft tissue, osteosarcoma, cancer of the urethra, prostate cancer, chronic
  • T cell toxicity to the cancer occurs.
  • 240 The method of any one of clauses 215 to 238 wherein off-target tissue toxicity does not occur in the patient and wherein CAR T cell toxicity to the cancer occurs.
  • T cell composition further comprises non-transformed T cells.
  • the CAR T cell composition further comprises non-transformed T cells in a ratio selected from about 1:5 of the CAR T cells to the non-transformed T cells, about 1:4 of the CAR T cells to the non-transformed T cells, about 1:3 of the CAR T cells to the non- transformed T cells, about 1:2 of the CAR T cells to the non-transformed T cells, and about 1:1 of the CAR T cells to the non-transformed T cells.
  • a method of treatment of a cancer comprising i) administering to a patient a compound, or a pharmaceutically acceptable salt thereof, wherein the compound comprises a small molecule ligand linked to a targeting moiety by a linker and wherein the compound, or the pharmaceutically acceptable salt thereof, is administered once weekly to the patient; and
  • a CAR T cell composition comprising CAR T cells wherein the CAR T cells comprise a CAR directed to the targeting moiety.
  • the ligand is selected from the group consisting of a folate, DUPA, an NK-1R ligand, a CAIX ligand, a ligand of gamma glutamyl transpeptidase, an N G2D ligand, and a CCK2R ligand.
  • the targeting moiety is selected from the group consisting of 2,4-dinitrophenol (DNP), 2,4,6-trinitrophenol (TNP), biotin, digoxigenin, fluorescein, fluorescein isothiocyanate (FITC), NHS -fluorescein, pentafluorophenyl ester, tetrafluorophenyl ester, a knottin, a centyrin, and a DARPin.
  • DNP 2,4-dinitrophenol
  • TNP 2,4,6-trinitrophenol
  • biotin digoxigenin
  • fluorescein fluorescein isothiocyanate
  • NHS -fluorescein pentafluorophenyl ester
  • tetrafluorophenyl ester tetrafluorophenyl ester
  • knottin a centyrin
  • DARPin DARPin
  • linker comprises polyethylene glycol (PEG), polyproline, a hydrophilic amino acid, a sugar, an unnatural peptidoglycan, a polyvinylpyrrolidone, pluronic F-127, or a combination thereof.
  • L represents the linker
  • T represents the targeting moiety
  • L comprises a structure having the formula
  • n is an integer from 0 to 200. 260. The method of any one of clauses 252 to 259 wherein the linker comprises PEG and the targeting moiety is FITC, or a pharmaceutically acceptable salt thereof.
  • any one of clauses 252 to 270 wherein the cancer is selected from the group consisting of lung cancer, bone cancer, pancreatic cancer, skin cancer, cancer of the head, cancer of the neck, cutaneous melanoma, intraocular melanoma uterine cancer, ovarian cancer, endometrial cancer, rectal cancer, stomach cancer, colon cancer, breast cancer, triple negative breast cancer, carcinoma of the fallopian tubes, carcinoma of the endometrium, carcinoma of the cervix, carcinoma of the vagina, carcinoma of the vulva, Hodgkin's Disease, cancer of the esophagus, cancer of the small intestine, cancer of the endocrine system, cancer of the thyroid gland, cancer of the parathyroid gland, non-small cell lung cancer, cancer of the adrenal gland, sarcoma of soft tissue, osteosarcoma, cancer of the urethra, prostate cancer, chronic leukemia, acute leukemia, acute myelocytic leukemia, lymphocytic lymphom
  • T cells comprise a nucleic acid comprising SEQ ID NO: l.
  • T cells comprise a polypeptide comprising SEQ ID NO:2.
  • T cell composition further comprises non-transformed T cells.
  • a method of treatment of a cancer comprising i) administering to a patient a compound, or a pharmaceutically acceptable salt thereof, wherein the compound comprises a small molecule ligand linked to a targeting moiety by a linker, wherein at least a first dose and a second dose of the compound, or the pharmaceutically acceptable salt thereof, are administered to the patient, wherein the first dose and the second dose are different, wherein the second dose of the compound, or the pharmaceutically acceptable salt thereof, is about 2-fold to about 15000-fold greater in amount than the first dose of the compound, or the pharmaceutically acceptable salt thereof; and
  • CAR T cells wherein the CAR T cells comprise a CAR directed to the targeting moiety.
  • ligand is selected from the group consisting of a folate, DUPA, an NK-1R ligand, a CAIX ligand, a ligand of gamma glutamyl transpeptidase, an NKG2D ligand, and a CCK2R ligand.
  • the targeting moiety is selected from the group consisting of 2,4-dinitrophenol (DNP), 2,4,6-trinitrophenol (TNP), biotin, digoxigenin, fluorescein, fluorescein isothiocyanate (FITC), NHS -fluorescein, pentafluorophenyl ester, tetrafluorophenyl ester, a knottin, a centyrin, and a DARPin.
  • DNP 2,4-dinitrophenol
  • TNP 2,4,6-trinitrophenol
  • biotin digoxigenin
  • fluorescein fluorescein isothiocyanate
  • NHS -fluorescein pentafluorophenyl ester
  • tetrafluorophenyl ester tetrafluorophenyl ester
  • knottin a centyrin
  • DARPin DARPin
  • linker comprises polyethylene glycol (PEG), polyproline, a hydrophilic amino acid, a sugar, an unnatural peptidoglycan, a polyvinylpyrrolidone, pluronic F-127, or a combination thereof.
  • L represents the linker
  • T represents the targeting moiety
  • L comprises a structure having the formula
  • n is an integer from 0 to 200.
  • the cancer is selected from the group consisting of lung cancer, bone cancer, pancreatic cancer, skin cancer, cancer of the head, cancer of the neck, cutaneous melanoma, intraocular melanoma uterine cancer, ovarian cancer, endometrial cancer, rectal cancer, stomach cancer, colon cancer, breast cancer, triple negative breast cancer, carcinoma of the fallopian tubes, carcinoma of the endometrium, carcinoma of the cervix, carcinoma of the vagina, carcinoma of the vulva, Hodgkin's Disease, cancer of the esophagus, cancer of the small intestine, cancer of the endocrine system, cancer of the thyroid gland, cancer of the parathyroid gland, non-small cell lung cancer, cancer of the adrenal gland, sarcoma of soft tissue, osteosarcoma, cancer of the urethra, prostate cancer, chronic leukemia, acute leukemia, acute myelocytic leukemia, lymphocytic lymphom
  • T cells comprise a nucleic acid comprising SEQ ID NO: l.
  • a method of treatment of a cancer comprising i) administering to a patient a first dose of a compound, or a pharmaceutically acceptable salt thereof, wherein the compound comprises a small molecule ligand linked to a targeting moiety by a linker;
  • a CAR T cell composition comprising CAR T cells wherein the CAR T cells comprise a CAR directed to the targeting moiety.
  • ligand is selected from the group consisting of a folate, DUPA, an NK-1R ligand, a CAIX ligand, a ligand of gamma glutamyl transpeptidase, an NKG2D ligand, and a CCK2R ligand.
  • the targeting moiety is selected from the group consisting of 2,4-dinitrophenol (DNP), 2,4,6-trinitrophenol (TNP), biotin, digoxigenin, fluorescein, fluorescein isothiocyanate (FITC), NHS -fluorescein, pentafluorophenyl ester, tetrafluorophenyl ester, a knottin, a centyrin, and a DARPin.
  • the linker comprises polyethylene glycol (PEG), polyproline, a hydrophilic amino acid, a sugar, an unnatural peptidoglycan, a polyvinylpyrrolidone, pluronic F-127, or a combination thereof. 371. The method of any one of clauses 325 to 370 wherein the linker comprises PEG.
  • L represents the linker
  • T represents the targeting moiety
  • L comprises a structure having the formula
  • n is an integer from 0 to 200.
  • n is an integer from 0 to 110.
  • n is an integer from 0 to 20.
  • any one of clauses 325 to 378 wherein the cancer is selected from the group consisting of lung cancer, bone cancer, pancreatic cancer, skin cancer, cancer of the head, cancer of the neck, cutaneous melanoma, intraocular melanoma uterine cancer, ovarian cancer, endometrial cancer, rectal cancer, stomach cancer, colon cancer, breast cancer, triple negative breast cancer, carcinoma of the fallopian tubes, carcinoma of the endometrium, carcinoma of the cervix, carcinoma of the vagina, carcinoma of the vulva, Hodgkin's Disease, cancer of the esophagus, cancer of the small intestine, cancer of the endocrine system, cancer of the thyroid gland, cancer of the parathyroid gland, non-small cell lung cancer, cancer of the adrenal gland, sarcoma of soft tissue, osteosarcoma, cancer of the urethra, prostate cancer, chronic leukemia, acute leukemia, acute myelocytic leukemia, lymphocytic lympho
  • T cell toxicity to the cancer occurs.
  • T cells comprise a nucleic acid comprising SEQ ID NO: l.
  • T cells comprise a polypeptide comprising SEQ ID NO:2.
  • fluoresceinamine sodium fluorescein, or fluorescein.
  • a method of treatment of a cancer comprising i) administering to a patient a first dose of a compound, or a pharmaceutically acceptable salt thereof, wherein the compound comprises a small molecule ligand linked to a targeting moiety by a linker and wherein the compound, or the
  • CAR T cell composition comprising CAR T cells wherein the CAR T cells comprise a CAR directed to the targeting moiety;
  • T cell toxicity to the cancer occurs.
  • ligand is selected from the group consisting of a folate, DUPA, an NK-1R ligand, a CAIX ligand, a ligand of gamma glutamyl transpeptidase, an NKG2D ligand, and a CCK2R ligand.
  • the targeting moiety is selected from the group consisting of 2,4-dinitrophenol (DNP), 2,4,6-trinitrophenol (TNP), biotin, digoxigenin, fluorescein, fluorescein isothiocyanate (FITC), NHS -fluorescein, pentafluorophenyl ester, tetrafluorophenyl ester, a knottin, a centyrin, and a DARPin.
  • DNP 2,4-dinitrophenol
  • TNP 2,4,6-trinitrophenol
  • biotin digoxigenin
  • fluorescein fluorescein isothiocyanate
  • NHS -fluorescein pentafluorophenyl ester
  • tetrafluorophenyl ester tetrafluorophenyl ester
  • knottin a centyrin
  • DARPin DARPin
  • linker comprises polyethylene glycol (PEG), polyproline, a hydrophilic amino acid, a sugar, an unnatural peptidoglycan, a polyvinylpyrrolidone, pluronic F-127, or a combination thereof.
  • L represents the linker
  • T represents the targeting moiety
  • L comprises a structure having the formula
  • n is an integer from 0 to 200.
  • n is an integer from 0 to 150.
  • n is an integer from 15 to 110.
  • any one of clauses 406 to 447 wherein the cancer is selected from the group consisting of lung cancer, bone cancer, pancreatic cancer, skin cancer, cancer of the head, cancer of the neck, cutaneous melanoma, intraocular melanoma uterine cancer, ovarian cancer, endometrial cancer, rectal cancer, stomach cancer, colon cancer, breast cancer, triple negative breast cancer, carcinoma of the fallopian tubes, carcinoma of the endometrium, carcinoma of the cervix, carcinoma of the vagina, carcinoma of the vulva, Hodgkin's Disease, cancer of the esophagus, cancer of the small intestine, cancer of the endocrine system, cancer of the thyroid gland, cancer of the parathyroid gland, non-small cell lung cancer, cancer of the adrenal gland, sarcoma of soft tissue, osteosarcoma, cancer of the urethra, prostate cancer, chronic leukemia, acute leukemia, acute myelocytic leukemia, lymphocytic lympho
  • CAR has a recognition region and the recognition region is a single chain fragment variable (scFv) region of an anti-FITC antibody, wherein the CAR has a co-stimulation domain and the co- stimulation domain is CD137 (4-1BB), and wherein the CAR has an activation signaling domain and the activation signaling domain is a T cell CD3 ⁇ chain.
  • scFv single chain fragment variable
  • T cells comprise a nucleic acid comprising SEQ ID NO: l.
  • a method of treatment of a cancer comprising i) administering to a patient a compound, or a pharmaceutically acceptable salt thereof, wherein the compound comprises a small molecule ligand linked to a targeting moiety by a linker; and
  • CAR T cell composition comprises CAR T cells and wherein the CAR T cells comprise a CAR directed to the targeting moiety; and wherein the small molecule ligand is a PSMA ligand and the targeting moiety is FITC.
  • a method of treatment of a cancer comprising
  • CAR T cell composition comprises CAR T cells and wherein the CAR T cells comprise a CAR directed to the targeting moiety; and wherein the small molecule ligand is a CAIX ligand and the targeting moiety is FITC.
  • a method of treatment of a cancer comprising i) administering to a patient a first compound, or a pharmaceutically acceptable salt thereof, wherein the first compound, or the pharmaceutically acceptable salt thereof, comprises a PSMA ligand linked to FITC by a linker;
  • pharmaceutically acceptable salt thereof comprises a CAIX ligand linked to FITC by a linker
  • CAR T cell composition comprises CAR T cells and wherein the CAR T cells comprise a CAR directed to the targeting moiety.
  • FIGURES 1A-B show anti-FITC CAR T cell mediated toxicity.
  • Figure 1A shows the changes in bodyweight for the mice of different treatment groups.
  • Figure IB shows the detected concentration of IFN-gamma for the different treatment groups.
  • Figure 1C shows the first- week survival (%) of the mice in the different treatment groups.
  • FIGURES 2A-B show the effect of anti-FITC CAR T cell regulation on the tumor response.
  • Figure 2A shows tumor growth for mice that are treated with either CAR T cells and PBS or CAR T cells and FITC-Folate.
  • Figure 2B shows a summary of the tumor response results for mice used in the study.
  • FIGURES 3A-D show the effect of FITC-Folate concentration on the tumor response.
  • Figure 3A shows the detected concentration of IFN-gamma at the different FITC- folate concentrations.
  • Figure 3B shows post CAR T cell injection tumor growth in the presence of different FITC-folate concentrations.
  • Figure 3C shows the first-week survival (%) of the mice.
  • Figure 3D shows a summary of the tumor response results for the mice used in the study.
  • FIGURES 4A-B show suppressing FITC CAR T cell activation with agents that inhibit a mediator of T cell activation signal.
  • Figure 4A shows the changes in IFN- gamma concentration as a function of agent concentration.
  • Figure 4B shows the changes in CD69 expression as a function of agent concentration.
  • FIGURE 5 shows a general diagram of the constructs used for CAR T transduction.
  • FIGURES 6A-D show anti-tumor efficacy and toxicity at different EC 17 doses and numbers of CART cells.
  • Figure 6A shows tumor volume over time.
  • Figure 6B shows body weight changes over time.
  • Figure 6C shows the maximal percentage body weight loss for each EC 17 dose.
  • Figure 6D shows the percentage of mice showing sCRS (cytokine release syndrome) for each EC17 dose.
  • sCRS cytokine release syndrome
  • FIGURE 7 shows the rescue with EC0923 of mice having sCRS and observed responses of mice treated with or without EC0923, and harvested organs from mice treated with or without EC0923.
  • FIGURES 8A-D show anti-tumor efficacy and toxicity of different CAR T doses.
  • Figure 8 A shows tumor volume over time.
  • Figure 8B shows body weight changes over time.
  • Figure 8C shows the maximal percentage of body weight loss for each CAR T dose.
  • Figure 8D shows the percentage of mice showing sCRS for each CAR T dose.
  • FIGURES 9A-B show anti-tumor efficacy and body weight change for different EC 17 doses.
  • Figure 9A shows tumor volume over time.
  • Figure 9B shows body weight change over time.
  • FIGURES lOA-C show anti-tumor efficacy of different CAR T cell and non- transformed T cell mixtures.
  • Figure 10A shows tumor volume over time; ( ⁇ ) no CAR-T, (o) CAR-T on Day 0, ( ⁇ ) CAR-T on Day 0, unmodified T on Day 52, (T ) CAR-T on Day 0, Day 46 and Day 52.
  • Figure 10B shows body weight change over time; ( ⁇ ) no CAR-T, (o) CAR-T on Day 0, ( ⁇ ) CAR-T on Day 0, unmodified T on Day 52, (T ) CAR-T on Day 0, Day 46 and Day 52.
  • Figure IOC shows the amount of CAR T cells in blood and tumor volume for different CAR T cell and non-transformed T cell mixtures.
  • FIGURES 11 A-B show anti-tumor efficacy and toxicity of 5 million CAR T cells and different EC 17 dosing schedules.
  • Figure 11A shows tumor volume over time.
  • Figure 1 IB shows body weight change over time.
  • FIGURE 12 shows control of CAR T cell mediated toxicity via regulation of CAR T cell activation by the use of competitors to inhibit CAR T cell activation and by ending administration of the bridge.
  • FIGURES 13A-C show the results of a FITC-Folate dose escalation study.
  • Figure 13A shows the percent body weight change over time after administration of the bridge and the CAR T cells.
  • Figure 13B shows the change in tumor volume over time after injection of CAR T cells and the bridge.
  • Figure 13C shows the percent of survival after the first week of treatment with the bridge and the CAR T cells.
  • FIGURES 14A-B show the effect of the FITC-ligand bridge molecule on CAR T cell proliferation and cytokine production.
  • Figure 14A shows the number of CAR T cells 6 days after the introduction of the CAR T cells into mice.
  • Figure 14B shows the concentration of the serum cytokines IL-2, IFN- ⁇ , and TNF-a 6 days after the introduction of CAR T cells into mice.
  • FIGURE 15 shows the concentration of IFN- ⁇ as a function of the concentration of FITC -folate in an in vitro assay.
  • FIGURE 16 shows the rescue (based on a measurement of cytokine production) with EC0923 or fluorescein or mice having cytokine release syndrome.
  • FIGURE 17 shows that CAR-T cell activity (based on a measurement of cytokine production) is dependent on the presence of the tumor and on EC 17 dose level.
  • FIGURES 18 A-C show that CAR-T cells do not proliferate in naive mice with no tumors.
  • Figure 18A shows body weight change in mice (with no tumors) injected with CAR-T cells, but no EC 17 or with 500 nmoles/kg of EC 17 three times weekly.
  • Figures 18B and C show CAR-T cell number and spleen size in these mice versus mice with HEK (folate - receptor positive) tumors.
  • the left-hand bar in each group of three bars is mice without tumors injected with no EC 17 but with CAR-T cells
  • the middle bar is mice without tumors injected with CAR-T cells and EC 17
  • the right-hand bar is mice with tumors injected with CAR-T cells and EC17.
  • N.D. is not determined and the y-axis is logarithmic for Figure 18.
  • FIGURES 19A-B show effects on tumor size of CAR-T cells and EC 17 injected into mice using an MDA-MB-231 model (high folate receptor expression levels - Figure 19A) or an OV90 tumor model (low folate receptor expression levels - Figure 19B).
  • FIGURES 20A-B show effects on tumor size (Figure 20A) and body weight loss (Figure 20B) of CAR-T cells and various doses of EC 17 injected into mice using an MDA-MB-231 model.
  • FIG. 21 A and 21B show FITC-CAR-T anti-tumor activity in a MDA-MB-231 model.
  • FIG. 22A and 22B show FITC-CAR-T anti-tumor activity in an OV-90 model.
  • FIG. 23A and 23B show FITC-CAR-T anti-tumor activity in a KB model.
  • 2/3 had sCRS on day 23 and 1/3 had sCRS on day 37.
  • FIG. 24A and 24B show FITC-CAR-T anti-tumor activity in a HEK-FRa model.
  • FIG. 25A and 25B show FITC-CAR-T anti-tumor activity in a SKOV-3 model.
  • Panels A and B show the protocol for treatment.
  • Panel D shows the effect of EC 17 pre-painting on tumor size.
  • FIG. 27, Panel A shows the protocols for treatment.
  • Panel B shows toxicity studies.
  • Panel C shows the effect of EC17 pre-painting on tumor toxicity.
  • Linel no EC17.
  • Line 2 EC17 4h pre-done.
  • Line 4 EC 17 48h post CAR-Ts.
  • FIG. 28 Panels A-D, show CAR-T cell number in blood. CAR-T number in mice without rescue was considered as 1.
  • FIG. 29, Panels A-E show comparison studies of three rescue agents (folic acid, sodium fluorescein (NAFL), and leucovorin).
  • FIG. 30A and 30B show rescue assays. Mice with fluorescein rescue had the least body weight loss. All mice with rescue reached complete response, except 2/9 in the fluorescein rescue group. Line 1 no EC17. Line 2: no EC17 but Fluorescein. Line 3: Fluorescein rescue. Line 4: Leucovorin rescue. Line 5: Folic acid rescue. Line 6: no rescue.
  • FIG. 31 shows a sodium fluorescein (60 umol/kg) rescue study schema.
  • FIG. 32A and 32B show NaFL rescue related organ weight changes. (1) CAR-T; (2) CAR-T + EC17; (3) CAR-T + EC17 + NaFL rescue.
  • FIG. 33 Panels A-G, show cytokine production in mouse blood 7 hours after
  • FIG. 34 Panels A-G, show cytokine production in mice (27 hours after NaFL rescue).
  • FIG. 35 Panels A-E, show cytokine production reduced in mouse blood ( ⁇ 7 hours after NaFL rescue).
  • FIG. 36A and 36B show NaFL rescue effect on FITC CAR-T anti-tumor activity and body weight change. (1) CAR-T only; (2) CAR-T + EC17; (3) CAR-T + EC17 + NaFL.
  • FIG. 37A and 37B show the effect of rescue on cytokine levels.
  • FIG. 38A shows a CAR-T administration schedule.
  • FIG. 38B shows body weight changes.
  • FIG. 39 Panels A-D, show that cytokine production in blood is CAR-T dose dependent.
  • FIG. 40A shows the dosing schedule and FIG. 40B shows that CAR-T number in blood is EC 17 dose dependent (day 3 in vivo).
  • FIG. 41 A shows the dosing schedule and FIG. 4 IB shows that CAR-T count in blood is EC 17 dose dependent although the difference is smaller (day 6 in vivo).
  • FIG. 42 shows mouse body weight changes following CAR-T and EC 17 injection.
  • FIG. 43A and 43B show CAR-T cell count and spleen size in mice post CAR- T cell and EC 17 injection.
  • Mice with tumor CAR-T 5 million + EC 17 SIW;
  • naive mice CAR-T 8 million no EC 17;
  • naive mice CAR-T 8 million + EC 17 TIW;
  • naive mice CAR-T 5 million no EC 17;
  • FIG. 44 shows cytokine production following EC 17 and CAR-T cell injection in the presence and absence of a tumor.
  • FIG. 45 shows the universality of anti-FITC CAR T cell therapy: binding of various adaptors to CAR T cells.
  • FIG. 46 shows that the universal Car T cell can eliminate various cancer cells expressing orthogonal antigens upon addition of antigen matched bridges in vitro.
  • FIG. 47 shows the relationship between concentration of bridges and the universal CAR T cell's anti-tumor activity in vitro.
  • FIG. 48 shows that the universal CAR T cell can eliminate various cancer cells expressing orthogonal antigens upon addition of antigen matched bridges in vivo.
  • FIG. 49 shows that the universal CAR T cell can eliminate two tumors via cocktail of bridges in vivo.
  • FIG. 50 shows a sodium fluorescein (0.06, 0.6, 6 umol/kg) rescue study schema.
  • FIG. 51 A shows anti-tumor activity (6 umol/kg NaFL rescue).
  • FIG. 5 IB shows the corresponding body weight changes.
  • FIG. 52 Panels A-E, show cytokine levels in mouse blood following sodium fluorescein rescue.
  • FIG. 53 Panel A shows a rescue schema. Panels B and C show enumeration of FITC CAR T cells in the blood after rescue.
  • FIG. 54 shows the characterization of circulating CAR T cells in mouse blood after rescue.
  • FIG. 55A shows a rescue schema. Panels B and C show enumeration of CAR T cells in the blood after rescue. (1) Control [No NaFL]; (2) 0.06 umol/kg NaFL; (3) 0.6 umol/kg NAFL; (4) 6 umol.kg NaFL.
  • FIG. 56 shows tumor burden in EC 17 treated and non-treated animals.
  • FIG. 57 summarizes the estimated numbers of tumor masses and total tumor weights in all groups examined.
  • FIG. 58 A and 58B show the characterization of circulating tumor cells.
  • FIG. 59A and 59B show the characterization of circulating tumor cells.
  • FIG. 60A and 60B show the percent of whole blood that is CAR T cells upon EC 17 injection.
  • FIG. 61 A and 6 IB show the persistence of blood-borne CAR T cells post infusion of EC 17 with and without rescue and the phenotype post infusion of EC 17.
  • FIG. 62A and 62B show that CAR T cells localized in metastatic tumor lesions, not adjacent healthy tissues, when EC17 is injected.
  • FIG. 63 shows the design and characterization of an anti-fluorescein CAR T cell and fluorescein-folate bridge.
  • A Structure of fluorescein-folate (FITC-folate).
  • C Transduction efficiency of CAR T cells evaluated by flow cytometry.
  • FIG. 64 shows the demonstration that FITC-folate bridge mediates anti- fluorescein CAR T cell engagement with folate receptor-expressing cancer cells (KB cells).
  • A Demonstration that FR is expressed on KB cells. Grey histogram: KB cells without staining; Black histogram: KB cells labeled with ⁇ FITC-folate in the presence of excess (10 ⁇ ) free folate as competitor; Open histogram: KB cells labeled with ⁇ FITC-folate.
  • B Cytotoxicity of CAR T cells towards KB cells upon addition of correct FITC-folate ( ⁇ ) but not mismatched FITC-DUPA (lOOnM) or no (PBS) bridge.
  • C Impact of effector: target cell ratio on CAR T cell lysis of KB cells in presence of FITC- folate, FITC-DUPA, or no bridge.
  • D IFNy production is induced by addition of FITC- folate (lOOnM) but not FITC-DUPA (lOOnM).
  • E Proliferation of anti-fluorescein CAR T cells is induced by FITC-folate but not FITC-DUPA.
  • F Expression of activation marker (CD69) on anti-fluorescein CAR T cells occurs only upon addition of correct bridge.
  • FIG. 65 shows the dependence of CRS on presence of anti-fluorescein CAR T cells, folate receptor positive cancer cells (MDA-MB-231 cells) and FITC-folate in vivo.
  • A Bodyweight change (%) determined 4 days after anti-fluorescein CAR T cell (5x106) infusion into either tumor-free or tumor-bearing mice in the presence or absence of FITC- folate (500nmole/kg administered on days 1 and 2). ** P ⁇ 0.01 by one-way ANOVA test.
  • B Effect of CAR T cell number on bodyweight change (%) on day 4 in tumor-bearing mice after administration of either PBS or 500 nmole/kg FrTC-folate on days 1 and 2.
  • FIG. 66 shows the control of CRS intensity by interruption of bridge administration.
  • A Analysis of body weight change ( ) as a measure of CRS intensity after administration of a high dose of anti-fluorescein CAR T cells (15x106) in the either absence (PBS) or presence of FITC-folate (500nmole/kg administered on days 1, and 2, and alternate days thereafter). In the interrupted dosing regimen, the continuous dosing schedule was followed except FITC-folate injections were omitted on days 4 and 6.
  • B Analysis of IFNy levels in mouse plasma on day 6 using the dosing regimens described in part A.
  • C Analysis of IFNy levels in mouse plasma on day 6 using the dosing regimens described in part A.
  • FIG. 67 shows the effect of blockade of bridge via competition with free folate or free fluorescein on CAR T cell-mediated cytotoxicity.
  • A Measurement of body weight change ( ) after administration of anti-fluorescein CAR T cells (15x106) in the absence (PBS) or presence of FITC-folate (500nmole/kg administered on days 1, and 2, and alternate days thereafter). For competition studies, 100-fold excess folate was co-injected on days 4 and 6. **** P ⁇ 0.0001.
  • B Analysis on day 6 of IFNy levels in plasma of above treatment groups. ** P ⁇ 0.005.
  • FIG. 68 shows the effect of bridge concentration on the regulation of anti- fluorescein CAR T cell cytokine release and anti-tumor activity in vitro and in vivo.
  • B IFNy release from cells described in part A.
  • C The level of IFNy in the plasma of
  • FIG. 69 shows the prevention of CRS by gradual escalation of bridge dose or decrease in bridge dosing frequency.
  • FIG. 70 Panel A shows a dose escalation schema. Panels B-C, show the effect of EC 17 dose escalation on the anti-tumor activity and the toxicity (body weight changes) of CAR-T therapy.
  • FIG. 71 Panel A shows a scheme for testing whether tumor size correlates with body weight changes and IL-6 release during CAR-T/EC17 therapy.
  • Panels B-C show the results for body weight change and IL-6 levels, respectively.
  • FIG. 72 Panel A shows a scheme for testing whether CAR-T/EC17 therapy is effective in an osteosarcoma model.
  • Panel B shows the tumor size results.
  • FIG. 73 shows body weight changes for the tests described for FIG. 72.
  • FIG. 74 Panels A-F show that HOS cancer cells express the FR-a.
  • FIG. 75 shows a scheme for testing whether cytokines are produced in response to CAR-T/EC17 therapy and whether NaFL rescues the mice from CRS.
  • FIGS. 76, Panels A-E show reduction of mouse cytokine production by 60 umol/kg NaFL 7 hours post NaFL rescue.
  • FIGS. 77, Panels A-c show reduction of mouse cytokine production by 60 umol/kg NaFL 27 hours post NaFL rescue.
  • FIG. 78 shows a scheme for testing reduction of mouse cytokine production in response to CAR-T/EC17 therapy by various concentrations of NaFL.
  • FIG. 79 shows reduction of MCP-1 in response to CAR-T/EC17 therapy by NaFL rescue.
  • FIG. 80 shows reduction of IL-6 in response to CAR-T/EC17 therapy by
  • FIG. 81 shows reduction of IL-10 in response to CAR-T/EC17 therapy by
  • FIG. 82 Panel A shows a scheme for testing whether MCP- 1 production in response to CAR-T/EC17 therapy correlates with CAR-T cell number.
  • Panel B shows that MCP-1 production in response to CAR-T/EC17 therapy correlates with CAR-T cell number.
  • a or “an” may mean one or more.
  • “about” in reference to a numeric value including, for example, whole numbers, fractions, and percentages, generally refers to a range of numerical values (e.g., +/- 5 % to 10% of the recited value) that one of ordinary skill in the art would consider equivalent to the recited value (e.g., having the same function or result).
  • treat refers to both therapeutic treatment and prophylactic or preventative treatment.
  • the terms “ameliorate,” “ameliorating,” “amelioration,” or “ameliorated” in reference to cancer can mean reducing the symptoms of the cancer, reducing the size of a tumor, completely or partially removing the tumor (e.g., a complete or partial response), causing stable disease, preventing progression of the cancer (e.g., progression free survival), or any other effect on the cancer that would be considered by a physician to be a therapeutic, prophylactic, or preventative treatment of the cancer.
  • administer means all means of introducing the compound, or pharmaceutically acceptable salt thereof, or CAR T cell composition described herein to the patient, including, but not limited to, oral, intravenous, intramuscular, subcutaneous, and transdermal.
  • off-target toxicity means organ damage or a reduction in the patient's weight that is unacceptable to the physician treating the patient, or any other effect on the patient that is unacceptable to the physician treating the patient, for example, B cell aplasia, a fever, a drop in blood pressure, or pulmonary edema.
  • transduction and “transfection” are used equivalently and the terms mean introducing a nucleic acid into a cell by any artificial method, including viral and non- viral methods.
  • a small molecule ligand linked to a targeting moiety by a linker is used as a bridge between a cancer and CAR T cells (i.e, T cells expressing a chimeric antigen receptor).
  • the bridge directs the CAR T cells to the cancer for amelioration of the cancer.
  • the "small molecule ligand” can be a folate, a CAIX ligand, DUPA, an NK-1R ligand, a ligand of gamma glutamyl transpeptidase, an NKG2D ligand, or a CCK2R ligand, each of which is a small molecule ligand that binds specifically to a cancer cell type (i.e., the receptor for each of these ligands is overexpressed on cancers compared to normal tissues).
  • the "targeting moiety" linked to the small molecule ligand binds to the recognition region of the genetically engineered CAR expressed by CAR T cells.
  • the recognition region of the CAR e.g., a single chain fragment variable region (scFv) of an antibody, an Fab, Fv, Fc, or (Fab')2 fragment, and the like
  • the small molecule ligand linked to a targeting moiety by a linker acts as a bridge between the cancer and the CAR T cells directing the CAR T cells to the cancer for amelioration of the cancer.
  • the bridge between the cancer and the CAR T cells can be any of the conjugates shown in the Examples.
  • the bridge is a small organic molecule so clearance from the bloodstream can be rapidly achieved (e.g., about 20 minutes or less).
  • the CAR T cell response can be targeted to only those cancer cells expressing a receptor for the small molecule ligand portion of the 'bridge,' thereby reducing off-target toxicity to normal tissues.
  • this system can be 'universal' because one type of CAR T cell construct can be used to target a wide variety of cancers using different 'bridges'.
  • the targeting moiety recognized by the CAR T cell may remain constant so that one type of CAR T cell construct can be used, while the small molecule ligand that binds to the cancer can be altered to allow targeting of a wide variety of cancers.
  • the small molecule ligand linked to a targeting moiety by a linker is referred to as a "compound.”
  • a method of treatment of a cancer comprising i) administering to a patient a compound, or a pharmaceutically acceptable salt thereof, wherein the compound comprises a small molecule ligand linked to a targeting moiety by a linker;
  • a CAR T cell composition comprising CAR T cells wherein the CAR T cells comprise the CAR directed to the targeting moiety.
  • the ligand is selected from the group consisting of a folate, DUPA, an NK-IR ligand, a CAIX ligand, a ligand of gamma glutamyl transpeptidase, an NKG2D ligand, and a CCK2R ligand.
  • the targeting moiety is selected from the group consisting of 2,4-dinitrophenol (DNP), 2,4,6-trinitrophenol (TNP), biotin, digoxigenin, fluorescein, fluorescein isothiocyanate (FITC), NHS -fluorescein, pentafluorophenyl ester, tetrafluorophenyl ester, a knottin, a centyrin, and a DARPin.
  • DNP 2,4-dinitrophenol
  • TNP 2,4,6-trinitrophenol
  • biotin digoxigenin
  • fluorescein fluorescein isothiocyanate
  • NHS -fluorescein pentafluorophenyl ester
  • tetrafluorophenyl ester tetrafluorophenyl ester
  • knottin a centyrin
  • DARPin DARPin
  • linker comprises polyethylene glycol (PEG), polyproline, a hydrophilic amino acid, a sugar, an unnatural peptidoglycan, a polyvinylpyrrolidone, pluronic F-127, or a combination thereof.
  • L represents the linker
  • T represents the targeting moiety
  • L comprises a structure having the formula
  • n is an integer from 0 to 200.
  • any one of clauses 1 to 26 wherein the cancer is selected from the group consisting of lung cancer, bone cancer, pancreatic cancer, skin cancer, cancer of the head, cancer of the neck, cutaneous melanoma, intraocular melanoma uterine cancer, ovarian cancer, endometrial cancer, rectal cancer, stomach cancer, colon cancer, breast cancer, triple negative breast cancer, carcinoma of the fallopian tubes, carcinoma of the endometrium, carcinoma of the cervix, carcinoma of the vagina, carcinoma of the vulva, Hodgkin's Disease, cancer of the esophagus, cancer of the small intestine, cancer of the endocrine system, cancer of the thyroid gland, cancer of the parathyroid gland, non-small cell lung cancer, cancer of the adrenal gland, sarcoma of soft tissue, osteosarcoma, cancer of the urethra, prostate cancer, chronic leukemia, acute leukemia, acute myelocytic leukemia, lymphocytic lymphoma,
  • T cell toxicity to the cancer occurs.
  • the first dose of the CAR T cell composition comprises a mixture of the CAR T cells and non- transformed T cells in a ratio selected from about 1:5 of the CAR T cells to the non- transformed T cells, about 1:4 of the CAR T cells to the non-transformed T cells, about 1:3 of the CAR T cells to the non-transformed T cells, about 1:2 of the CAR T cells to the non-transformed T cells, and about 1: 1 of the CAR T cells to the non- transformed T cells.
  • the second dose of the CAR T cell composition comprises a mixture of the CAR T cells and non- transformed T cells in a ratio selected from about 1:5 of the CAR T cells to the non- transformed T cells, about 1:4 of the CAR T cells to the non-transformed T cells, about 1:3 of the CAR T cells to the non-transformed T cells, about 1:2 of the CAR T cells to the non-transformed T cells, and about 1: 1 of the CAR T cells to the non- transformed T cells.
  • the first dose of the CAR T cell composition comprises a mixture of the CAR T cells and non- transformed T cells in a ratio of from about 1:1 to about 1:5 of the CAR T cells to the non-transformed T cells.
  • the second dose of the CAR T cell composition comprises a mixture of the CAR T cells and non- transformed T cells in a ratio of from about 1:1 to 1:5 of the CAR T cells to the non- transformed T cells.
  • a method of treatment of a cancer comprising i) administering to a patient a compound, or a pharmaceutically acceptable salt thereof, wherein the compound comprises a small molecule ligand linked to a targeting moiety by a linker;
  • CAR T cell composition comprises CAR T cells, wherein the CAR T cells comprise a CAR directed to the targeting moiety, and wherein the CAR T cell composition comprises a mixture of the CAR T cells and non-transformed T cells.
  • ligand is selected from the group consisting of a folate, DUPA, an NK- IR ligand, a CAIX ligand, a ligand of gamma glutamyl transpeptidase, an NKG2D ligand, and a CCK2R ligand.
  • the targeting moiety is selected from the group consisting of 2,4-dinitrophenol (DNP), 2,4,6-trinitrophenol (TNP), biotin, digoxigenin, fluorescein, fluorescein isothiocyanate (FITC), NHS -fluorescein, pentafluorophenyl ester, tetrafluorophenyl ester, a knottin, a centyrin, and a DARPin.
  • DNP 2,4-dinitrophenol
  • TNP 2,4,6-trinitrophenol
  • biotin digoxigenin
  • fluorescein fluorescein isothiocyanate
  • NHS -fluorescein pentafluorophenyl ester
  • tetrafluorophenyl ester tetrafluorophenyl ester
  • knottin a centyrin
  • DARPin DARPin
  • linker comprises polyethylene glycol (PEG), polyproline, a hydrophilic amino acid, a sugar, an unnatural peptidoglycan, a polyvinylpyrrolidone, pluronic F-127, or a combination thereof.
  • L represents the linker
  • T represents the targeting moiety
  • L comprises a structure having the formula
  • n is an integer from 0 to 200.
  • any one of clauses 56 to 81 wherein the cancer is selected from the group consisting of lung cancer, bone cancer, pancreatic cancer, skin cancer, cancer of the head, cancer of the neck, cutaneous melanoma, intraocular melanoma uterine cancer, ovarian cancer, endometrial cancer, rectal cancer, stomach cancer, colon cancer, breast cancer, triple negative breast cancer, carcinoma of the fallopian tubes, carcinoma of the endometrium, carcinoma of the cervix, carcinoma of the vagina, carcinoma of the vulva, Hodgkin's Disease, cancer of the esophagus, cancer of the small intestine, cancer of the endocrine system, cancer of the thyroid gland, cancer of the parathyroid gland, non-small cell lung cancer, cancer of the adrenal gland, sarcoma of soft tissue, osteosarcoma, cancer of the urethra, prostate cancer, chronic leukemia, acute leukemia, acute myelocytic leukemia, lymphocytic lymphom
  • CAR has a recognition region and the recognition region of the CAR is a single chain fragment variable (scFv) region of an anti-FITC antibody.
  • scFv single chain fragment variable
  • a compound or a pharmaceutically acceptable salt thereof, wherein the compound comprises a small molecule ligand linked to a targeting moiety by a linker;
  • CAR T cell composition comprises CAR T cells and wherein the CAR T cells comprise a CAR directed to the targeting moiety;
  • a conjugate comprising a folate wherein the conjugate comprising a folate does not comprise a targeting moiety, or an agent that inhibits activation of the CAR T cells.
  • step iii comprises administering a folate.
  • step iii comprises administering folic acid or leucovorin.
  • step iii comprises administering the conjugate comprising a folate.
  • Q is selected from the group consisting of C and CH;
  • X 2 and X 3 are each independently selected from the group consisting of oxygen, sulfur, -C(Z)-, -C(Z)0-, -OC(Z)-, -N(R 4b )-, -C(Z)N(R 4b )-, -N(R 4b )C(Z)-,
  • R 1 is selected-from the group consisting of hydrogen, halo, d-C 12 alkyl, and
  • R 2 , R 3 , R 4 , R 4a , R 4b , R 5 , R 5b , R 6b , and R 7b are each independently selected from the group consisting of hydrogen, halo, Ci-C 12 alkyl, Ci-C 12 alkoxy, Ci-Ci 2 alkanoyl, Ci-C 12 alkenyl, Ci-C 12 alkynyl, (Ci-Ci 2 alkoxy)carbonyl, and (Ci-C 12 alkylamino)carbonyl;
  • R 6 and R 7 are each independently selected from the group consisting of hydrogen, halo, Ci-Ci 2 alkyl, and Ci-Ci 2 alkoxy; or, R 6 and R 7 are taken together to form a carbonyl group;
  • R 6a and R 7a are each independently selected from the group consisting of hydrogen, halo, Ci-Ci 2 alkyl, and Ci-Ci 2 alkoxy; or R 6a and R 7a are taken together to form a carbonyl group;
  • p, r, s, and t are each independently either 0 or 1;
  • * represents an optional covalent bond to the rest of the conjugate, if any additional chemical moieties are part of the folate.
  • the targeting moiety is selected from the group consisting of 2,4-dinitrophenol (DNP), 2,4,6-trinitrophenol (TNP), biotin, digoxigenin, fluorescein, fluorescein isothiocyanate (FITC), NHS -fluorescein, pentafluorophenyl ester, tetrafluorophenyl ester, a knottin, a centyrin, and a DARPin.
  • DNP 2,4-dinitrophenol
  • TNP 2,4,6-trinitrophenol
  • biotin digoxigenin
  • fluorescein fluorescein isothiocyanate
  • NHS -fluorescein NHS -fluorescein
  • pentafluorophenyl ester tetrafluorophenyl ester
  • a knottin a centyrin
  • DARPin DARPin
  • linker comprises polyethylene glycol (PEG), polyproline, a hydrophilic amino acid, a sugar, an unnatural peptidoglycan, a polyvinylpyrrolidone, pluronic F-127, or a combination thereof.
  • L represents the linker
  • T represents the targeting moiety
  • L comprises a structure having the formula
  • n is an inte ⁇ ⁇ er from 0 to 200.
  • n is an integer from 0 to 150.
  • n is an integer from 0 to 110.
  • n is an integer from 0 to 20.
  • n is an integer from 15 to 20.
  • n is an integer from 15 to 110.
  • any one of clauses 108 to 134 wherein the cancer is selected from the group consisting of lung cancer, bone cancer, pancreatic cancer, skin cancer, cancer of the head, cancer of the neck, cutaneous melanoma, intraocular melanoma uterine cancer, ovarian cancer, endometrial cancer, rectal cancer, stomach cancer, colon cancer, breast cancer, triple negative breast cancer, carcinoma of the fallopian tubes, carcinoma of the endometrium, carcinoma of the cervix, carcinoma of the vagina, carcinoma of the vulva, Hodgkin's Disease, cancer of the esophagus, cancer of the small intestine, cancer of the endocrine system, cancer of the thyroid gland, cancer of the parathyroid gland, non-small cell lung cancer, cancer of the adrenal gland, sarcoma of soft tissue, osteosarcoma, cancer of the urethra, prostate cancer, chronic leukemia, acute leukemia, acute myelocytic leukemia, lymphocytic lymphom
  • CAR T cell composition are administered. 147.
  • T cell toxicity to the cancer occurs.
  • T cells comprise a nucleic acid comprising SEQ ID NO: l.
  • T cells comprise a polypeptide comprising SEQ ID NO:2.
  • the CAR T cell composition comprises a mixture of the CAR T cells and non-transformed T cells in a ratio selected from about 1:5 of the CAR T cells to the non-transformed T cells, about 1:4 of the CAR T cells to the non-transformed T cells, about 1:3 of the CAR T cells to the non-transformed T cells, about 1:2 of the CAR T cells to the non- transformed T cells, and about 1:1 of the CAR T cells to the non-transformed T cells.
  • the CAR T cell composition comprises a mixture of the CAR T cells and non-transformed T cells in a ratio selected from about 1:5 of the CAR T cells to the non-transformed T cells, about 1:4 of the CAR T cells to the non-transformed T cells, about 1:3 of the CAR T cells to the non-transformed T cells, about 1:2 of the CAR T cells to the non- transformed T cells, and about 1:1 of the CAR T cells to the non-transformed T cells.
  • the CAR T cell composition comprises a mixture
  • the CAR T cell composition comprises a mixture of the CAR T cells and non-transformed T cells in a ratio of from about 1:1 to about 1:5 of the CAR T cells to the non- transformed T cells.
  • T cell composition comprises a mixture comprising about 10 million of the CAR T cells and about 40 million of the non-transformed T cells.
  • the agent that inhibits activation of the CAR T cells is selected from the group consisting of a lymphocyte-specific protein tyrosine kinase inhibitor, a PI3 kinase inhibitor, an inhibitor of an IL-2 inducible T cell kinase, a JAK inhibitor, a BTK inhibitor, EC2319, and an agent that blocks CAR T cell binding to the compound, or the pharmaceutically acceptable salt thereof, but does not bind to the cancer.
  • the dose of the CAR T cells administered to the patient in the CAR T cell composition is selected from the group consisting of about 1 million, about 2 million, about 3 million, about 4 million, about 5 million, about 6 million, about 7 million, about 8 million, about 9 million, about 10 million, about 11 million, about 12 million, about 12.5 million, about 13 million, about 14 million, and about 15 million of the CAR T cells.
  • fluoresceinamine FITC
  • sodium fluorescein sodium fluorescein
  • a method of treatment of a cancer comprising
  • a compound, or a pharmaceutically acceptable salt thereof wherein the compound comprises a small molecule ligand linked to a targeting moiety by a linker, and wherein the compound, or the pharmaceutically acceptable salt thereof, is at a dose of about 10 nmoles/kg of body weight of the patient to about 2500 nmoles/kg of body weight of the patient;
  • a CAR T cell composition comprising CAR T cells wherein the CAR T cells comprise a CAR directed to the targeting moiety, and wherein the CAR T cells are at a dose of about 1 million of the CAR T cells to about 15 million of the CAR T cells.
  • ligand is selected from the group consisting of a folate, DUPA, an NK-1R ligand, a CAIX ligand, a ligand of gamma glutamyl transpeptidase, an NKG2D ligand, and a CCK2R ligand.
  • the targeting moiety is selected from the group consisting of 2,4-dinitrophenol (DNP), 2,4,6-trinitrophenol (TNP), biotin, digoxigenin, fluorescein, fluorescein isothiocyanate (FITC), NHS -fluorescein, pentafluorophenyl ester, tetrafluorophenyl ester, a knottin, a centyrin, and a DARPin.
  • the targeting moiety is FITC.
  • the linker comprises polyethylene glycol (PEG), polyproline, a hydrophilic amino acid, a sugar, an unnatural peptidoglycan, a polyvinylpyrrolidone, pluronic F-127, or a combination thereof.
  • L represents the linker
  • T represents the targeting moiety
  • L comprises a structure having the formula
  • n is an integer from 0 to 200.
  • any one of clauses 183 to 201 wherein the cancer is selected from the group consisting of lung cancer, bone cancer, pancreatic cancer, skin cancer, cancer of the head, cancer of the neck, cutaneous melanoma, intraocular melanoma uterine cancer, ovarian cancer, endometrial cancer, rectal cancer, stomach cancer, colon cancer, breast cancer, triple negative breast cancer, carcinoma of the fallopian tubes, carcinoma of the endometrium, carcinoma of the cervix, carcinoma of the vagina, carcinoma of the vulva, Hodgkin's Disease, cancer of the esophagus, cancer of the small intestine, cancer of the endocrine system, cancer of the thyroid gland, cancer of the parathyroid gland, non-small cell lung cancer, cancer of the adrenal gland, sarcoma of soft tissue, osteosarcoma, cancer of the urethra, prostate cancer, chronic leukemia, acute leukemia, acute myelocytic leukemia, lymphocytic lympho
  • T cells comprise a nucleic acid comprising SEQ ID NO: l.
  • a method of treatment of a cancer comprising
  • ligand is selected from the group consisting of a folate, DUPA, an NK-1R ligand, a CAIX ligand, a ligand of gamma glutamyl transpeptidase, an NKG2D ligand, and a CCK2R ligand.
  • the targeting moiety is selected from the group consisting of 2,4-dinitrophenol (DNP), 2,4,6-trinitrophenol (TNP), biotin, digoxigenin, fluorescein, fluorescein isothiocyanate (FITC), NHS -fluorescein, pentafluorophenyl ester, tetrafluorophenyl ester, a knottin, a centyrin, and a DARPin.
  • DNP 2,4-dinitrophenol
  • TNP 2,4,6-trinitrophenol
  • biotin digoxigenin
  • fluorescein fluorescein isothiocyanate
  • FITC fluorescein isothiocyanate
  • NHS -fluorescein pentafluorophenyl ester
  • tetrafluorophenyl ester a knottin
  • a centyrin and a DARPin.
  • linker comprises polyethylene glycol (PEG), polyproline, a hydrophilic amino acid, a sugar, an unnatural peptidoglycan, a polyvinylpyrrolidone, pluronic F-127, or a combination thereof.
  • L represents the linker
  • T represents the targeting moiety
  • L comprises a structure having the formula
  • n is an integer from 0 to 200. 223.
  • the linker comprises PEG and the targeting moiety is FITC, or a pharmaceutically acceptable salt thereof.
  • any one of clauses 215 to 232 wherein the administration is by intravenous administration.
  • the cancer is selected from the group consisting of lung cancer, bone cancer, pancreatic cancer, skin cancer, cancer of the head, cancer of the neck, cutaneous melanoma, intraocular melanoma uterine cancer, ovarian cancer, endometrial cancer, rectal cancer, stomach cancer, colon cancer, breast cancer, triple negative breast cancer, carcinoma of the fallopian tubes, carcinoma of the endometrium, carcinoma of the cervix, carcinoma of the vagina, carcinoma of the vulva, Hodgkin's Disease, cancer of the esophagus, cancer of the small intestine, cancer of the endocrine system, cancer of the thyroid gland, cancer of the parathyroid gland, non-small cell lung cancer, cancer of the adrenal gland, sarcoma of soft tissue, osteosarcoma, cancer of the urethra, prostate cancer, chronic
  • T cell toxicity to the cancer occurs.
  • 240 The method of any one of clauses 215 to 238 wherein off-target tissue toxicity does not occur in the patient and wherein CAR T cell toxicity to the cancer occurs.
  • T cell composition further comprises non-transformed T cells.
  • the CAR T cell composition further comprises non-transformed T cells in a ratio selected from about 1:5 of the CAR T cells to the non-transformed T cells, about 1:4 of the CAR T cells to the non-transformed T cells, about 1:3 of the CAR T cells to the non- transformed T cells, about 1:2 of the CAR T cells to the non-transformed T cells, and about 1:1 of the CAR T cells to the non-transformed T cells.
  • a method of treatment of a cancer comprising i) administering to a patient a compound, or a pharmaceutically acceptable salt thereof, wherein the compound comprises a small molecule ligand linked to a targeting moiety by a linker and wherein the compound, or the pharmaceutically acceptable salt thereof, is administered once weekly to the patient; and
  • CAR T cells wherein the CAR T cells comprise a CAR directed to the targeting moiety.
  • the ligand is selected from the group consisting of a folate, DUPA, an NK-1R ligand, a CAIX ligand, a ligand of gamma glutamyl transpeptidase, an N G2D ligand, and a CCK2R ligand.
  • the targeting moiety is selected from the group consisting of 2,4-dinitrophenol (DNP), 2,4,6-trinitrophenol (TNP), biotin, digoxigenin, fluorescein, fluorescein isothiocyanate (FITC), NHS -fluorescein, pentafluorophenyl ester, tetrafluorophenyl ester, a knottin, a centyrin, and a DARPin.
  • DNP 2,4-dinitrophenol
  • TNP 2,4,6-trinitrophenol
  • biotin digoxigenin
  • fluorescein fluorescein isothiocyanate
  • NHS -fluorescein pentafluorophenyl ester
  • tetrafluorophenyl ester tetrafluorophenyl ester
  • knottin a centyrin
  • DARPin DARPin
  • linker comprises polyethylene glycol (PEG), polyproline, a hydrophilic amino acid, a sugar, an unnatural peptidoglycan, a polyvinylpyrrolidone, pluronic F-127, or a combination thereof.
  • L represents the linker
  • T represents the targeting moiety
  • L comprises a structure having the formula

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US16/489,455 US11850262B2 (en) 2017-02-28 2018-02-28 Compositions and methods for CAR T cell therapy
JP2019547107A JP7178355B2 (ja) 2017-02-28 2018-02-28 Ｃａｒ ｔ細胞療法のための組成物および方法
CN201880028009.XA CN110582288B (zh) 2017-02-28 2018-02-28 用于car t细胞疗法的组合物和方法
EP18761400.3A EP3589295B1 (en) 2017-02-28 2018-02-28 Compositions and methods for car t cell therapy
EP24199482.1A EP4501352A3 (en) 2017-02-28 2018-02-28 Compositions and methods for car t cell therapy
ES18761400T ES3010559T3 (en) 2017-02-28 2018-02-28 Compositions and methods for car t cell therapy
US16/921,400 US11759480B2 (en) 2017-02-28 2020-07-06 Compositions and methods for CAR T cell therapy
JP2022181982A JP7585280B2 (ja) 2017-02-28 2022-11-14 Ｃａｒ ｔ細胞療法のための組成物および方法
US18/494,613 US20240165159A1 (en) 2017-02-28 2023-10-25 Compositions and methods for car t cell therapy
JP2024194196A JP2025024006A (ja) 2017-02-28 2024-11-06 Ｃａｒ ｔ細胞療法のための組成物および方法

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US20200405760A1 (en) 2020-12-31
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