US20060025437A1 - SNS-595 and methods of using the same - Google Patents

SNS-595 and methods of using the same Download PDF

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Publication number
US20060025437A1
US20060025437A1 US11/218,387 US21838705A US2006025437A1 US 20060025437 A1 US20060025437 A1 US 20060025437A1 US 21838705 A US21838705 A US 21838705A US 2006025437 A1 US2006025437 A1 US 2006025437A1
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United States
Prior art keywords
dose
patient
sns
cancer
another embodiment
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US11/218,387
Inventor
Daniel Adelman
Jeffrey Silverman
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Viracta Therapeutics Inc
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Sunesis Pharmaceuticals Inc
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Application filed by Sunesis Pharmaceuticals Inc filed Critical Sunesis Pharmaceuticals Inc
Priority to US11/218,387 priority Critical patent/US20060025437A1/en
Assigned to SUNESIS PHARMACEUTICALS, INC. reassignment SUNESIS PHARMACEUTICALS, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ADELMAN, DANIEL C., SILVERMAN, JEFFREY A.
Publication of US20060025437A1 publication Critical patent/US20060025437A1/en
Priority to CNA2006800394844A priority patent/CN101296697A/en
Priority to EP06814231.4A priority patent/EP1931339B1/en
Priority to AU2006287149A priority patent/AU2006287149B2/en
Priority to CN201510179121.1A priority patent/CN104873502A/en
Priority to MX2008002843A priority patent/MX2008002843A/en
Priority to KR1020087007886A priority patent/KR20080041298A/en
Priority to PCT/US2006/034699 priority patent/WO2007028171A1/en
Priority to BRPI0615446-8A priority patent/BRPI0615446A2/en
Assigned to OXFORD FINANCE LLC, AS COLLATERAL AGENT reassignment OXFORD FINANCE LLC, AS COLLATERAL AGENT SECURITY AGREEMENT Assignors: SUNESIS PHARMACEUTICALS, INC.
Assigned to SUNESIS PHARMACEUTICALS, INC. reassignment SUNESIS PHARMACEUTICALS, INC. RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: OXFORD FINANCE LLC, AS COLLATERAL AGENT
Assigned to WESTERN ALLIANCE BANK reassignment WESTERN ALLIANCE BANK SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SUNESIS PHARMACEUTICALS, INC.
Assigned to SUNESIS PHARMACEUTICALS, INC. reassignment SUNESIS PHARMACEUTICALS, INC. RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: WESTERN ALLIANCE BANK
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    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/52—PV systems with concentrators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/60—Thermal-PV hybrids
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E70/00—Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin

Definitions

  • SNS-595 is novel naphthyridine cytotoxic agent that was previously known as AG-7352 (see e.g., Tsuzuki et al., Tetrahedron - Asymmetry 12: 1793-1799 (2001) and U.S. Pat. No. 5,817,669).
  • the chemical name of SNS-595 is (+)-1,4-dihydro-7-[(3S,4S)-3-methoxy-4-(methylamino)-1-pyrrolidinyl]-4-oxo-1-(2-thiazoyl)-1,8-naphthyridine-3-carboxylic acid and has the structure shown below
  • the present invention relates to pharmaceutical compositions and methods of using SNS-595 to treat cancer.
  • FIG. 1 depicts the plasma concentrations of SNS-595 over time among the various patient cohorts.
  • composition comprising:
  • acids include both organic and inorganic acids such as acetic acid, ascorbic acid, benzene-sulfonic acid, ethansulfonic acid, glycolic acid, hydrogen chloride, hydrogen bromide, hydroxyethanesulfonic acid, lactic acid, maleic acid, methanesulfonic acid, proprionic acid, succinic acid, sulfuric acid, trifluoroacetic acid, and toluenesulfonic acid.
  • the acid is hydrochloric acid, methanesulfonic acid or lactic acid.
  • the acid is methanesulfonic acid.
  • the pharmaceutical composition further comprises a tonicity agent.
  • a tonicity agent include amino acids (e.g., alanine and glycine), electrolytes (e.g., sodium chloride and potassium chloride), monosaccharides (e.g. glucose or galactose), disaccharides (e.g. sucrose) and hexahydric alcohols (e.g., mannitol and sorbitol).
  • the tonicity agent is sodium chloride, glucose, mannitol, or sorbitol.
  • the tonicity agent is a hexahydric alcohol.
  • the tonicity agent is sorbitol.
  • SNS-595 is a cytotoxic agent for the treatment of cancer.
  • the types of cancers that can be treated using the inventive methods include but are not limited to: bladder cancer, breast cancer, cervical cancer, colon cancer (including colorectal cancer), esophageal cancer, head and neck cancer, leukemia, liver cancer, lung cancer (both small cell and non-small cell), lymphoma, melanoma, myeloma, neuroblastoma, ovarian cancer, pancreatic cancer, prostate cancer, renal cancer, sarcoma (including osteosarcoma), skin cancer (including squamous cell carcinoma), stomach cancer, testicular cancer, thyroid cancer, and uterine cancer.
  • a method of using SNS-595 to treat a human cancer comprises administering to a patient on the basis of body surface area, a dose of 10 mg/m 2 -150 mg/m 2 of SNS-595.
  • the dose is 10 mg/m 2 -100 mg/m 2 . In another embodiment, the dose is 30 mg/m 2 -75 mg/m 2 . In another embodiment, the dose is 40 mg/m 2 -80 mg/m 2 . In another embodiment, the dose is 50 mg/m 2 -90 mg/m 2 . In another embodiment, the dose is 15 mg/m 2 -80 mg/m 2 .
  • the dose is 20 mg/m 2 -30 mg/m 2 . In another embodiment the dose is 25 mg/m 2 -35 mg/m 2 . In another embodiment the dose is 40 mg/m 2 -50 mg/m 2 . In another embodiment the dose is 45 mg/m 2 -55 mg/m 2 . In another embodiment the dose is 50 mg/m 2 -60 mg/m 2 . In another embodiment the dose is 55 mg/m 2 -65 mg/m 2 . In another embodiment the dose is 60 mg/m 2 -70 mg/m 2. In another embodiment the dose is 65 mg/m 2 -75 mg/m 2 . In another embodiment the dose is 70 mg/m 2 -80 mg/m 2 .
  • the dose is 75 mg/m 2 -85 mg/m 2 . In another embodiment the dose is 80 mg/m 2 -90 mg/m 2 . In another embodiment the dose is 85 mg/m 2 -95 mg/m 2 . In another embodiment the dose is 90 mg/m 2 -100 mg/m 2 .
  • the administered dose of SNS-595 can be delivered simultaneously (e.g. a single bolus injection) or over a 24-hour period (e.g., continuous infusion over time or divided bolus doses over time) and is repeated until the patient experiences stable disease or regression, or until the patient experiences disease progression or unacceptable toxicity.
  • stable disease for solid tumors generally means that the perpendicular diameter of measurable lesions has not increased by 25% or more from the last measurement. See e.g., Response Evaluation Criteria in Solid Tumors (RECIST) Guidelines, Journal of the National Cancer Institute 92(3): 205-216 (2000).
  • Stable disease or lack there of is determined by methods known in the art such as evaluation of patient symptoms, physical examination, visualization of the tumor that has been imaged using X-ray, CAT, PET, or MRI scan and other commonly accepted evaluation modalities.
  • the administered dose of SNS-595 can be expressed in units other than as mg/m 2 .
  • doses can be expressed as mg/kg.
  • One of ordinary skill in the art would readily know how to convert doses from mg/m 2 to mg/kg to given either the height or weight of a subject or both (see e.g., http:///www.fda.gov/cder/cancer/animalframe.htm).
  • a dose of 10 mg/m 2 -150 mg/m 2 for a 65 kg human is approximately equal to 0.26 mg/kg-3.95 mg/kg.
  • a dose of 15 mg/m 2 -80 mg/m 2 for a 65 kg human is approximately equal to 0.39 mg/kg-2.11 mg/kg.
  • SNS-595 is administered according to a dosing schedule.
  • the method comprises:
  • the method comprises administering a dose of 10 mg/m 2 -100 mg/m 2 in steps i) and iii). In yet another embodiment, the method comprises administering a dose of 15 mg/m 2 -80 mg/m 2 in steps i) and iii).
  • the waiting period is 6 days, then the initial dose of SNS-595 is administered on Day 1 (step i); the waiting period is six days (step ii); and the following dose of SNS-595 is administered on Day 8 (step iii).
  • Other exemplary time periods include 2 days, 3 days, 13 days, 20 days, and 27 days.
  • the waiting period is at least 2 days and steps ii) through iii) are repeated at least three times.
  • the waiting period is at least 3 days and steps ii) through iii) are repeated at least five times.
  • the waiting period is at least 3 days and steps ii) through iii) are repeated at least three times.
  • the waiting period is at least 3 days and steps ii) through iii) are repeated at least five times. In another embodiment, the waiting period is at least 6 days and steps ii) through iii) are repeated at least three times. In another embodiment, the waiting period is at least 6 days and steps ii) through iii) are repeated at least five times. In another embodiment, the waiting period is at least 20 days and steps ii) through iii) are repeated at least three times. In another embodiment, the waiting period is at least 20 days and steps ii) through iii) are repeated at least five times. In another embodiment, the waiting period is at least 27 days and steps ii) through iii) are repeated at least three times. In another embodiment, the waiting period is at least 27 days and steps ii) through iii) are repeated at least five times.
  • the dosing method comprises administering a weekly dose of SNS-595 to a subject. In another embodiment, the dosing method comprises administering a dose of SNS-595 to a subject every two weeks. In another embodiment, the dosing method comprises administering a dose of SNS-595 to a subject every three weeks. In another embodiment, the dosing method comprises administering a dose of SNS-595 to a subject every four weeks.
  • the dosing method comprises a cycle wherein the cycle comprises administering a dose of SNS-595 to a subject once a week for three weeks followed by a period of at least two weeks where no SNS-595 is administered to said subject and wherein the cycle is repeated a plurality of times.
  • the period where no SNS-595 is administered is two weeks.
  • the period where no SNS-595 is administered is three weeks.
  • a method of treating a solid tumor comprises:
  • another method of treating solid tumors comprises administering a dose of 15 mg/m 2 -40 mg/m 2 of SNS-595 to a patient once a week wherein the one-week period comprises a treatment cycle and the treatment cycle is repeated at least twice.
  • the dose is 15 mg/m 2 -35 mg/m 2 .
  • the dose is 20 mg/m 2 -30 mg/m 2 .
  • the dose is 20 mg/m 2 -25 mg/m 2 .
  • another method of treating solid tumors comprises method comprises administering a dose of 15 mg/m 2 -40 mg/m 2 of SNS-595 to a patient once a week for three weeks followed by a period of at least two weeks where no SNS-595 is administered to said subject and wherein the cycle is repeated a plurality of times.
  • the dose is 15 mg/m 2 -35 mg/m 2 .
  • the dose is 20 mg/m 2 -30 mg/m 2 .
  • the dose is 20 mg/m 2 -25 mg/m 2 .
  • another method of treating solid tumors comprises administering a dose of 35 mg/m 2 -80 mg/m 2 of SNS-595 to a patient once in a three-week period wherein the three week period comprises a treatment cycle and the treatment cycle is repeated at least twice.
  • the method comprises administering a dose of 35 mg/m 2 -60 mg/m 2 of SNS-595 to a patient once in a three week period wherein the three week period comprises a treatment cycle and the treatment cycle is repeated at least twice.
  • the method for treating a heavily pretreated patient comprises, administering a dose of 40 mg/m 2 -50 mg/m 2 .
  • the method for treating a heavily pretreated patient comprises administering a dose of 45 mg/m 2 -50 mg/m 2 .
  • a heavily pretreated patient is defined as described by Tolcher et al., J. Clin. Oncol.
  • the method comprises administering a dose of 45 mg/m 2 -80 mg/m 2 of SNS-595 to a patient once in a three week period wherein the three week period comprises a treatment cycle and the treatment cycle is repeated at least twice.
  • the method for treating a minimally pretreated patient comprises, administering a dose of 50 mg/m 2 -75 mg/m 2 .
  • the method for treating a minimally pretreated patient comprises administering a dose of 55 mg/m 2 -70 mg/m 2 .
  • the method for treating a minimally pretreated patient comprises administering a dose of 55 mg/m 2 -65 mg/m 2 .
  • a method of treating a hematologic cancer such as leukemias and lymphomas comprises:
  • another method of treating a hematologic cancer comprises administering a dose of 20 mg/m 2 -40 mg/m 2 .
  • the dose is 25 mg/m 2 -30 mg/m 2 .
  • the dose is 30 mg/m 2 -35 mg/m 2 .
  • the dose is 35 mg/m 2 -40 mg/m 2 .
  • another method of treating a hematologic cancer comprises administering a dose of 10 mg/m 2 -20 mg/m 2 twice a week wherein the one-week period is a treatment cycle and the treatment cycle is repeated at least twice.
  • the dose is 10 mg/m 2 -15 mg/m 2 .
  • the dose is 15 mg/m 2 -20 mg/m 2 .
  • a method is provided supportive care to patients being treated with SNS-595.
  • the method comprises:
  • the supportive care agent is an antiemetic.
  • antiemetics include but are not limited to phenothiazines, butyrophenones, benzodiazapines, corticosteroids, serotonin antagonists, cannabinoids, and NK, receptor antagonists.
  • phenothiazine antiemetics include prochlorperazine and trimethobenzamide.
  • An example of a butyophenone antiemetic is haloperidol.
  • An example of a benzodiazapine antiemetic is lorazepam.
  • An example of a corticosteroid antiemetic is dexamethasone.
  • Examples of a serotonin antagonist antiemetic include ondansetron, granisetron, and dolasetron.
  • An example of a cannabinoid antiemetic is dronabinol.
  • An example of an NK1 receptor antagonist is aprepitant.
  • the antiemetic is prochlorperazine. In another embodiment, the antiemetic is prochlorperazine and the therapeutically effective amount is 10 mg. In another embodiment, the antiemetic is prochlorperazine and the therapeutically effective amount is an oral dose of 10 mg before the administration of SNS-595. In another embodiment, the antiemetic is prochlorperazine and the therapeutically effective amount is an oral dose of 10 mg every four to six hours as needed after the administration of SNS-595.
  • the antiemetic is dexamethazone. In another embodiment, the antiemetic is dexamethazone and the therapeutically effective amount is at least 4 mg. In another embodiment, the antiemetic is dexamethazone and the therapeutically effective amount is an oral dose of 4 mg before the administration of SNS-595. In another embodiment, the antiemetic is dexamethazone and the therapeutically effective amount is an oral dose of 8 mg before the administration of SNS-595. In another embodiment, the antiemetic is dexamethazone and the therapeutically effective amount is an intravenous dose of between about 10 mg and about 20 mg before the administration of SNS-595. In another embodiment, the antiemetic is dexamethazone and the therapeutically effective amount is an oral dose of 4 mg every six to twelve hours as needed after the administration of SNS-595.
  • the antiemetic is lorazepam. In another embodiment, the antiemetic is lorazepam and the therapeutically effective amount is 1 mg. In another embodiment, the antiemetic is lorazepam and the therapeutically effective amount is an oral dose of 1 mg before the administration of SNS-595. In another embodiment, the antiemetic is lorazepam and the therapeutically effective amount is an intravenous dose of 1 mg before the administration of SNS-595. In another embodiment, the antiemetic is lorazepam and the therapeutically effective amount is an oral dose of 1 mg every four to six hours as needed after the administration of SNS-595.
  • the antiemetic is dolasetron. In another embodiment, the antiemetic is dolasetron and the therapeutically effective amount is 100 mg. In another embodiment, the antiemetic is dolasetron and the therapeutically effective amount is an oral dose of 100 mg before the administration of SNS-595. In another embodiment, the antiemetic is dolasetron and the therapeutically effective amount is an intravenous dose of 100 mg before the administration of SNS-595.
  • the antiemetic is ondansetron. In another embodiment, the antiemetic is ondansetron and the therapeutically effective amount is at least 10 mg. In another embodiment, the antiemetic is ondansetron and the therapeutically effective amount is an intravenous dose of 10 mg before the administration of SNS-595. In another embodiment, the antiemetic is ondansetron and the therapeutically effective amount is an intravenous dose of 32 mg before the administration of SNS-595.
  • the antiemetic is granisetron. In another embodiment, the antiemetic is granisetron and the therapeutically effective amount is 10 ⁇ g/kg. In another embodiment, the antiemetic is granisetron and the therapeutically effective amount is an intravenous dose of 10 ⁇ g/kg before the administration of SNS-595. In another embodiment, the antiemetic is granisetron and the therapeutically effective amount is at least 1 mg. In another embodiment, the antiemetic is granisetron and the therapeutically effective amount is an oral dose of 1 mg before the administration of SNS-595. In another embodiment, the antiemetic is granisetron and the therapeutically effective amount is an oral dose of 2 mg before the administration of SNS-595.
  • the antiemetic is aprepitant. In another embodiment, the antiemetic is aprepitant and the therapeutically effective amount is at least 80 mg. In another embodiment, the antiemetic is aprepitant and the therapeutically effective amount is an oral dose of 125 mg before the administration of SNS-595. In another embodiment, the antiemetic is aprepitant and the therapeutically effective amount is a daily oral dose of 80 mg for at least two days after the administration of SNS-595.
  • the supportive care agent is a hematopoietic agent.
  • a hematopoietic agent is a molecule that stimulates hematopoiesis.
  • Illustrative examples of hematopoietic agents include but are not limited to granulocyte colony stimulating factor (G-CSF), granulocyte macrophage colony stimulating factor (GM-CSF), erythropoietin and erythropoiesis stimulating protein, and derivatives thereof.
  • G-CSF include but are not limited to filgrastim and its derivatives including pegfilgrastim.
  • An example of GM-CSF includes sargramostim.
  • An example of erythropoietin is epoetin alfa.
  • An example of erythropoiesis stimulating protein is darbepoetin alfa.
  • the hematopoietic agent is G-CSF. In another embodiment, the hematopoietic agent is filgrastim. In another embodiment, the hematopoietic agent is filgrastim and the therapeutically effective amount is at least 4 ⁇ g/kg. In another embodiment, the hematopoietic agent is filgrastim and the therapeutically effective amount of is a daily dose of at least 4 ⁇ g/kg for at least 7 days after the administration of SNS-595. In another embodiment, the hematopoietic agent is filgrastim and the therapeutically effective amount is a daily subcutaneous dose of between about 4 ⁇ g/kg and about 8 ⁇ g/kg for at least 7 days starting from the third day after the administration of SNS-595.
  • the hematopoietic agent is filgrastim and the therapeutically effective amount is a daily subcutaneous dose of between about 4 ⁇ g/kg and about 10 ⁇ g/kg for at least 14 days starting from the third day after the administration of SNS-595.
  • the hematopoietic agent is pegfilgrastim. In another embodiment, the hematopoietic agent is pegfilgrastim and the therapeutically effective amount is 6 mg. In another embodiment, the hematopoietic agent is pegfilgrastim and the therapeutically effective amount is a daily subcutaneous dose of 6 mg after the administration of SNS-595. In another embodiment, the hematopoietic agent is pegfilgrastim and the therapeutically effective amount is 100 ⁇ g/kg. In another embodiment, the hematopoietic agent is pegfilgrastim and the therapeutically effective amount is a daily dose of 100 ⁇ g/kg after the administration of SNS-595.
  • the hematopoietic agent is GM-CSF. In another embodiment, the hematopoietic agent is sargramostim. In another embodiment, the hematopoietic agent is sargramostim and the therapeutically effective amount is 250 ⁇ g/m 2 . In another embodiment, the hematopoietic agent is sargramostim and the therapeutically effective amount is a daily intravenous or subcutaneous dose of 250 ⁇ g/m 2 . In another embodiment, the hematopoietic agent is sargramostim and the therapeutically effective amount is a daily intravenous or subcutaneous dose of 250 ⁇ g/m 2 as needed starting from the third day after the administration of SNS-595. In another embodiment, the hematopoietic agent is sargramostim and the therapeutically effective amount is a daily intravenous or subcutaneous dose of 250 ⁇ g/m 2 as needed starting from the tenth day after the administration of SNS-595.
  • the hematopoietic agent is erythropoietin. In another embodiment, the hematopoietic agent is epoetin alfa. In another embodiment, the hematopoietic agent is epoetin alfa and the therapeutically effective amount is at least 150 units/kg. In another embodiment, the hematopoietic agent is epoetin alfa and the therapeutically effective amount is an intravenous or subcutaneous dose of 150 units/kg three times a week after the administration of SNS-595.
  • the hematopoietic agent is epoetin alfa and the therapeutically effective amount is an intravenous or subcutaneous dose of 300 units/kg three times a week after the administration of SNS-595. In another embodiment, the hematopoietic agent is epoetin alfa and the therapeutically effective amount is 40,000 units. In another embodiment, the hematopoietic agent is epoetin alfa and the therapeutically effective amount is a weekly dose of 40,000 units after the administration of SNS-595.
  • the hematopoietic agent is erythropoiesis stimulating protein. In another embodiment, the hematopoietic agent is darbepoetin alfa. In another embodiment, the hematopoietic agent is darbepoetin alfa and the therapeutically effective amount is between about 1.5 ⁇ g/kg and about 4.5 ⁇ g/kg. In another embodiment, the hematopoietic agent is darbepoetin alfa and the therapeutically effective amount is a weekly dose of between about 1.5 ⁇ g/kg and about 4.5 ⁇ g/kg
  • compositions Suitable for Injection or Intravenous Infusion are provided.
  • Acidic compositions provided the appropriate balance of increased solubility of SNS-595 and desirable pharmaceutical properties (e.g. increased patient comfort by causing less irritation at the delivery site).
  • An illustrative example of a suitable composition comprises: 10 mg SNS-595 per mL of aqueous solution of 4.5% sorbitol that is adjusted to pH 2.5 with methanesulfonic acid.
  • One protocol for making such a solution includes the following for making a 100 mg/10 mL presentation: 100 mg of SNS-595 and 450 mg D-sorbitol are added to distilled water; the volume is brought up to a volume of 10 mL; and the pH of the resulting solution is adjusted to 2.5 with methanesulfonic acid.
  • the resulting composition is also suitable for lyophilization. The lyophilized form is then reconstituted with sterile water to the appropriate concentration prior to use.
  • SNS-595 was administered to enrolled patients for up to six cycles.
  • a cycle is defined as a three-week period, with SNS-595 administered on the first day of each cycle (day 0), followed by at least 21 days of observation.
  • SNS-595 was administered to cohorts of at least 3 patients and dose escalation occurred by sequential cohort.
  • Doses of SNS-595 were linear with AUC ⁇ and its pharmacokinetic properties were remarkably consistent among patients in the same cohort.
  • FIG. 1 depicts the plasma concentrations of SNS-595 over time among the various patient cohorts and Table 1 shows the pharmacokinetic parameters derived there from.
  • Non-hematologic toxicities were generally mild (grade 1 ⁇ 2), without dose-limiting gastro-intestinal or neurotoxicity.
  • Pharmacokinetic parameters were evaluated in 36 patients (21 heavily pretreated and 15 minimally pretreated) after a single dose of 3 to 75 mg/m 2 .
  • Clearance (CL), volume of distribution, and terminal half-life (T1 ⁇ 2) remained unchanged across all patients up to 48 mg/m 2 .
  • PK parameters remained unchanged up to 75 mg/m 2 .
  • CL was 2.2 L/hr/m 2 (range of 1.0-3.8 L/hr/m 2 )
  • the volume of distribution was 53 L/m 2 (range of 31-76 L/m 2 )
  • the T1 ⁇ 2 was approximately 20 hr (range of 13-49 hr).

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Abstract

The present invention relates to SNS-595 and methods of treating cancer using the same.

Description

    RELATED APPLICATIONS
  • This application is a continuation-in-part of application Ser. No. 11/080,283, filed Mar. 14, 2005, which claims priority under 35 USC § 119, to U.S. Provisional Application Ser. No. 60/553,578 filed Mar. 15, 2004, the entire disclosures of which are hereby expressly incorporated by reference.
    • TECHNICAL FIELD
  • SNS-595 is novel naphthyridine cytotoxic agent that was previously known as AG-7352 (see e.g., Tsuzuki et al., Tetrahedron-Asymmetry 12: 1793-1799 (2001) and U.S. Pat. No. 5,817,669). The chemical name of SNS-595 is (+)-1,4-dihydro-7-[(3S,4S)-3-methoxy-4-(methylamino)-1-pyrrolidinyl]-4-oxo-1-(2-thiazoyl)-1,8-naphthyridine-3-carboxylic acid and has the structure shown below
    Figure US20060025437A1-20060202-C00001
  • The present invention relates to pharmaceutical compositions and methods of using SNS-595 to treat cancer.
    • DESCRIPTION OF THE FIGURES
  • FIG. 1 depicts the plasma concentrations of SNS-595 over time among the various patient cohorts.
    • DETAILED DESCRIPTION
  • In one aspect of the present invention, pharmaceutical composition is provided comprising:
      • a) SNS-595 and
      • b) an acid
        in an aqueous solution wherein the pH of the solution is 2-3.5. As used herein, a numerical range is intended to be inclusive. For example, the range of pH 2-3.5 includes both pH 2 and pH 3.5. In one embodiment, the pH of the composition is 2-3. In another embodiment, the pH of the composition is 2.3-2.7. As used herein, an aqueous solution is a liquid comprising water.
  • Suitable examples of acids include both organic and inorganic acids such as acetic acid, ascorbic acid, benzene-sulfonic acid, ethansulfonic acid, glycolic acid, hydrogen chloride, hydrogen bromide, hydroxyethanesulfonic acid, lactic acid, maleic acid, methanesulfonic acid, proprionic acid, succinic acid, sulfuric acid, trifluoroacetic acid, and toluenesulfonic acid. In one embodiment, the acid is hydrochloric acid, methanesulfonic acid or lactic acid. In another embodiment, the acid is methanesulfonic acid.
  • In another embodiment, the pharmaceutical composition further comprises a tonicity agent. Suitable examples of a tonicity agent include amino acids (e.g., alanine and glycine), electrolytes (e.g., sodium chloride and potassium chloride), monosaccharides (e.g. glucose or galactose), disaccharides (e.g. sucrose) and hexahydric alcohols (e.g., mannitol and sorbitol). In another embodiment, the tonicity agent is sodium chloride, glucose, mannitol, or sorbitol. In another embodiment, the tonicity agent is a hexahydric alcohol. In another embodiment, the tonicity agent is sorbitol.
  • SNS-595 is a cytotoxic agent for the treatment of cancer. The types of cancers that can be treated using the inventive methods include but are not limited to: bladder cancer, breast cancer, cervical cancer, colon cancer (including colorectal cancer), esophageal cancer, head and neck cancer, leukemia, liver cancer, lung cancer (both small cell and non-small cell), lymphoma, melanoma, myeloma, neuroblastoma, ovarian cancer, pancreatic cancer, prostate cancer, renal cancer, sarcoma (including osteosarcoma), skin cancer (including squamous cell carcinoma), stomach cancer, testicular cancer, thyroid cancer, and uterine cancer.
  • In another aspect of the invention, a method of using SNS-595 to treat a human cancer is provided. The method comprises administering to a patient on the basis of body surface area, a dose of 10 mg/m2-150 mg/m2 of SNS-595. Body surface area calculations can be calculated for example, with the Mosteller formula wherein:
    BSA(m2)=square root of [(height(cm)×weight(kg)/3600].
  • In another embodiment, the dose is 10 mg/m2-100 mg/m2. In another embodiment, the dose is 30 mg/m2-75 mg/m2. In another embodiment, the dose is 40 mg/m2-80 mg/m2. In another embodiment, the dose is 50 mg/m2-90 mg/m2. In another embodiment, the dose is 15 mg/m2-80 mg/m2.
  • In another embodiment the dose is 20 mg/m2-30 mg/m2. In another embodiment the dose is 25 mg/m2-35 mg/m2. In another embodiment the dose is 40 mg/m2-50 mg/m2. In another embodiment the dose is 45 mg/m2-55 mg/m2. In another embodiment the dose is 50 mg/m2-60 mg/m2. In another embodiment the dose is 55 mg/m2-65 mg/m2. In another embodiment the dose is 60 mg/m2-70 mg/m 2. In another embodiment the dose is 65 mg/m2-75 mg/m2. In another embodiment the dose is 70 mg/m2-80 mg/m2. In another embodiment the dose is 75 mg/m2-85 mg/m2. In another embodiment the dose is 80 mg/m2-90 mg/m2. In another embodiment the dose is 85 mg/m2-95 mg/m2. In another embodiment the dose is 90 mg/m2-100 mg/m2.
  • The administered dose of SNS-595 can be delivered simultaneously (e.g. a single bolus injection) or over a 24-hour period (e.g., continuous infusion over time or divided bolus doses over time) and is repeated until the patient experiences stable disease or regression, or until the patient experiences disease progression or unacceptable toxicity. For example, stable disease for solid tumors generally means that the perpendicular diameter of measurable lesions has not increased by 25% or more from the last measurement. See e.g., Response Evaluation Criteria in Solid Tumors (RECIST) Guidelines, Journal of the National Cancer Institute 92(3): 205-216 (2000). Stable disease or lack there of is determined by methods known in the art such as evaluation of patient symptoms, physical examination, visualization of the tumor that has been imaged using X-ray, CAT, PET, or MRI scan and other commonly accepted evaluation modalities.
  • The administered dose of SNS-595 can be expressed in units other than as mg/m2. For example, doses can be expressed as mg/kg. One of ordinary skill in the art would readily know how to convert doses from mg/m2 to mg/kg to given either the height or weight of a subject or both (see e.g., http:///www.fda.gov/cder/cancer/animalframe.htm). For example, a dose of 10 mg/m2-150 mg/m2 for a 65 kg human is approximately equal to 0.26 mg/kg-3.95 mg/kg. In another example, a dose of 15 mg/m2-80 mg/m2 for a 65 kg human is approximately equal to 0.39 mg/kg-2.11 mg/kg.
  • In another aspect of the present invention, SNS-595 is administered according to a dosing schedule. In one embodiment, the method comprises:
      • i) administering a dose of 10 mg/m2-150 mg/m2 of SNS-595 to a patient;
      • ii) waiting a period of at least one day where the subject is not administered any SNS-595;
      • iii) administering another dose of 10 mg/m2-150 mg/m2 of SNS-595 to the patient; and,
      • iv) repeating steps ii)-iii) a plurality of times.
  • In another embodiment, the method comprises administering a dose of 10 mg/m2-100 mg/m2 in steps i) and iii). In yet another embodiment, the method comprises administering a dose of 15 mg/m2-80 mg/m2 in steps i) and iii).
  • In the above methods, if the waiting period were 6 days, then the initial dose of SNS-595 is administered on Day 1 (step i); the waiting period is six days (step ii); and the following dose of SNS-595 is administered on Day 8 (step iii). Other exemplary time periods include 2 days, 3 days, 13 days, 20 days, and 27 days. In another embodiment, the waiting period is at least 2 days and steps ii) through iii) are repeated at least three times. In another embodiment, the waiting period is at least 3 days and steps ii) through iii) are repeated at least five times. In another embodiment, the waiting period is at least 3 days and steps ii) through iii) are repeated at least three times. In another embodiment, the waiting period is at least 3 days and steps ii) through iii) are repeated at least five times. In another embodiment, the waiting period is at least 6 days and steps ii) through iii) are repeated at least three times. In another embodiment, the waiting period is at least 6 days and steps ii) through iii) are repeated at least five times. In another embodiment, the waiting period is at least 20 days and steps ii) through iii) are repeated at least three times. In another embodiment, the waiting period is at least 20 days and steps ii) through iii) are repeated at least five times. In another embodiment, the waiting period is at least 27 days and steps ii) through iii) are repeated at least three times. In another embodiment, the waiting period is at least 27 days and steps ii) through iii) are repeated at least five times.
  • In another embodiment, the dosing method comprises administering a weekly dose of SNS-595 to a subject. In another embodiment, the dosing method comprises administering a dose of SNS-595 to a subject every two weeks. In another embodiment, the dosing method comprises administering a dose of SNS-595 to a subject every three weeks. In another embodiment, the dosing method comprises administering a dose of SNS-595 to a subject every four weeks.
  • In another embodiment, the dosing method comprises a cycle wherein the cycle comprises administering a dose of SNS-595 to a subject once a week for three weeks followed by a period of at least two weeks where no SNS-595 is administered to said subject and wherein the cycle is repeated a plurality of times. In another embodiment, the period where no SNS-595 is administered is two weeks. In another embodiment, the period where no SNS-595 is administered is three weeks.
  • In another aspect of the invention, a method of treating a solid tumor is provided. The method comprises:
      • i) administering a dose of 10 mg/m2-100 mg/m2 of SNS-595 to a patient;
      • ii) waiting a period of at least six days where the subject is not administered any SNS-595;
      • iii) administering another dose of 10 mg/m2-100 mg/m2 of SNS-595 to the patient; and,
      • iv) repeating steps ii)-iii) a plurality of times.
  • In another aspect of the invention, another method of treating solid tumors is provided. The method comprises administering a dose of 15 mg/m2-40 mg/m2 of SNS-595 to a patient once a week wherein the one-week period comprises a treatment cycle and the treatment cycle is repeated at least twice. In another embodiment, the dose is 15 mg/m2-35 mg/m2. In another embodiment, the dose is 20 mg/m2-30 mg/m2. In another embodiment, the dose is 20 mg/m2-25 mg/m2.
  • In another aspect of the invention, another method of treating solid tumors is provided. The method comprises method comprises administering a dose of 15 mg/m2-40 mg/m2 of SNS-595 to a patient once a week for three weeks followed by a period of at least two weeks where no SNS-595 is administered to said subject and wherein the cycle is repeated a plurality of times. In another embodiment, the dose is 15 mg/m2-35 mg/m2. In another embodiment, the dose is 20 mg/m2-30 mg/m2. In another embodiment, the dose is 20 mg/m2-25 mg/m2.
  • In another aspect of the invention, another method of treating solid tumors is provided. The method comprises administering a dose of 35 mg/m2-80 mg/m2 of SNS-595 to a patient once in a three-week period wherein the three week period comprises a treatment cycle and the treatment cycle is repeated at least twice.
  • In patients who are considered heavily pretreated (“heavily pretreated patients”), the method comprises administering a dose of 35 mg/m2-60 mg/m2 of SNS-595 to a patient once in a three week period wherein the three week period comprises a treatment cycle and the treatment cycle is repeated at least twice. In another embodiment, the method for treating a heavily pretreated patient comprises, administering a dose of 40 mg/m2-50 mg/m2. In another embodiment, the method for treating a heavily pretreated patient, comprises administering a dose of 45 mg/m2-50 mg/m2. A heavily pretreated patient is defined as described by Tolcher et al., J. Clin. Oncol. 19: 2937-2947 (2001) and is a patient who has been treated previously with more than six courses of an alkylating agent-containing chemotherapy regimen, more than two courses of carboplatin or mitomycin C, any prior nitrosourea-containing regimen, irradiation to 25% of the bone-marrow containing areas, high-dose chemotherapy requiring hematopoietic stem-cell reinfusions, or widespread metastases to bone.
  • Patients, who have not been treated previously for their solid tumors or have been treated but are not considered heavily pretreated, are minimally pretreated (“minimally pretreated patients”). For treating minimally pretreated patients, the method comprises administering a dose of 45 mg/m2-80 mg/m2 of SNS-595 to a patient once in a three week period wherein the three week period comprises a treatment cycle and the treatment cycle is repeated at least twice. In another embodiment, the method for treating a minimally pretreated patient comprises, administering a dose of 50 mg/m2-75 mg/m2. In another embodiment, the method for treating a minimally pretreated patient, comprises administering a dose of 55 mg/m2-70 mg/m2. In another embodiment, the method for treating a minimally pretreated patient, comprises administering a dose of 55 mg/m2-65 mg/m2.
  • In another aspect of the invention, a method of treating a hematologic cancer such as leukemias and lymphomas is provided. The method comprises:
      • i) administering a dose of 10 mg/m2-50 mg/m2 of SNS-595 to a patient;
      • ii) waiting a period of at least two days where the subject is not administered any SNS-595;
      • iii) administering another dose of 10 mg/m2-50 mg/m2 of SNS-595 to the patient; and,
      • iv) repeating steps ii)-iii) a plurality of times.
  • In one embodiment, the waiting period is six days. In another embodiment, the waiting period is two days. In another embodiment, the waiting period is three days.
  • In another aspect of the invention, another method of treating a hematologic cancer is provided. The method comprises administering a dose of 20 mg/m2-40 mg/m2. In another embodiment, the dose is 25 mg/m2-30 mg/m2. In another embodiment, the dose is 30 mg/m2-35 mg/m2. In another embodiment, the dose is 35 mg/m2-40 mg/m2.
  • In another aspect of the invention, another method of treating a hematologic cancer is provided. The method comprises administering a dose of 10 mg/m2-20 mg/m2 twice a week wherein the one-week period is a treatment cycle and the treatment cycle is repeated at least twice. In another embodiment, the dose is 10 mg/m2-15 mg/m2. In another embodiment, the dose is 15 mg/m2-20 mg/m2.
  • In another aspect of the present invention, a method is provided supportive care to patients being treated with SNS-595. The method comprises:
      • a) administering to a patient a dose of 10 mg/m2-150 mg/m2 of SNS-595 and
      • b) administering a therapeutically effective amount of a supportive care agent.
  • In another embodiment, the dose is 10 mg/m2-100 mg/m2. In yet another embodiment, the dose is 15 mg/m2-80 mg/m2. The supportive care agent is any substance that prevents or manages an adverse effect from SNS-595 treatment and is administered according to the appropriate dosing regimen for that substance. For example, different supportive care agents for treating nausea have different dosing regimen. While some are administered prophylactically, others are co-administered with SNS-595 while still others are administered after the administration of SNS-595. Illustrative examples of supportive care agents their doses and dosing regimens are found in The Physician's Desk Reference.
  • In one embodiment, the supportive care agent is an antiemetic. Illustrative examples of antiemetics include but are not limited to phenothiazines, butyrophenones, benzodiazapines, corticosteroids, serotonin antagonists, cannabinoids, and NK, receptor antagonists. Examples of phenothiazine antiemetics include prochlorperazine and trimethobenzamide. An example of a butyophenone antiemetic is haloperidol. An example of a benzodiazapine antiemetic is lorazepam. An example of a corticosteroid antiemetic is dexamethasone. Examples of a serotonin antagonist antiemetic include ondansetron, granisetron, and dolasetron. An example of a cannabinoid antiemetic is dronabinol. An example of an NK1 receptor antagonist is aprepitant.
  • In another embodiment, the antiemetic is prochlorperazine. In another embodiment, the antiemetic is prochlorperazine and the therapeutically effective amount is 10 mg. In another embodiment, the antiemetic is prochlorperazine and the therapeutically effective amount is an oral dose of 10 mg before the administration of SNS-595. In another embodiment, the antiemetic is prochlorperazine and the therapeutically effective amount is an oral dose of 10 mg every four to six hours as needed after the administration of SNS-595.
  • In another embodiment, the antiemetic is dexamethazone. In another embodiment, the antiemetic is dexamethazone and the therapeutically effective amount is at least 4 mg. In another embodiment, the antiemetic is dexamethazone and the therapeutically effective amount is an oral dose of 4 mg before the administration of SNS-595. In another embodiment, the antiemetic is dexamethazone and the therapeutically effective amount is an oral dose of 8 mg before the administration of SNS-595. In another embodiment, the antiemetic is dexamethazone and the therapeutically effective amount is an intravenous dose of between about 10 mg and about 20 mg before the administration of SNS-595. In another embodiment, the antiemetic is dexamethazone and the therapeutically effective amount is an oral dose of 4 mg every six to twelve hours as needed after the administration of SNS-595.
  • In another embodiment, the antiemetic is lorazepam. In another embodiment, the antiemetic is lorazepam and the therapeutically effective amount is 1 mg. In another embodiment, the antiemetic is lorazepam and the therapeutically effective amount is an oral dose of 1 mg before the administration of SNS-595. In another embodiment, the antiemetic is lorazepam and the therapeutically effective amount is an intravenous dose of 1 mg before the administration of SNS-595. In another embodiment, the antiemetic is lorazepam and the therapeutically effective amount is an oral dose of 1 mg every four to six hours as needed after the administration of SNS-595.
  • In another embodiment, the antiemetic is dolasetron. In another embodiment, the antiemetic is dolasetron and the therapeutically effective amount is 100 mg. In another embodiment, the antiemetic is dolasetron and the therapeutically effective amount is an oral dose of 100 mg before the administration of SNS-595. In another embodiment, the antiemetic is dolasetron and the therapeutically effective amount is an intravenous dose of 100 mg before the administration of SNS-595.
  • In another embodiment, the antiemetic is ondansetron. In another embodiment, the antiemetic is ondansetron and the therapeutically effective amount is at least 10 mg. In another embodiment, the antiemetic is ondansetron and the therapeutically effective amount is an intravenous dose of 10 mg before the administration of SNS-595. In another embodiment, the antiemetic is ondansetron and the therapeutically effective amount is an intravenous dose of 32 mg before the administration of SNS-595.
  • In another embodiment, the antiemetic is granisetron. In another embodiment, the antiemetic is granisetron and the therapeutically effective amount is 10 μg/kg. In another embodiment, the antiemetic is granisetron and the therapeutically effective amount is an intravenous dose of 10 μg/kg before the administration of SNS-595. In another embodiment, the antiemetic is granisetron and the therapeutically effective amount is at least 1 mg. In another embodiment, the antiemetic is granisetron and the therapeutically effective amount is an oral dose of 1 mg before the administration of SNS-595. In another embodiment, the antiemetic is granisetron and the therapeutically effective amount is an oral dose of 2 mg before the administration of SNS-595.
  • In another embodiment, the antiemetic is aprepitant. In another embodiment, the antiemetic is aprepitant and the therapeutically effective amount is at least 80 mg. In another embodiment, the antiemetic is aprepitant and the therapeutically effective amount is an oral dose of 125 mg before the administration of SNS-595. In another embodiment, the antiemetic is aprepitant and the therapeutically effective amount is a daily oral dose of 80 mg for at least two days after the administration of SNS-595.
  • In another embodiment, the supportive care agent is a hematopoietic agent. A hematopoietic agent is a molecule that stimulates hematopoiesis. Illustrative examples of hematopoietic agents include but are not limited to granulocyte colony stimulating factor (G-CSF), granulocyte macrophage colony stimulating factor (GM-CSF), erythropoietin and erythropoiesis stimulating protein, and derivatives thereof. Examples of G-CSF include but are not limited to filgrastim and its derivatives including pegfilgrastim. An example of GM-CSF includes sargramostim. An example of erythropoietin is epoetin alfa. An example of erythropoiesis stimulating protein is darbepoetin alfa.
  • In another embodiment, the hematopoietic agent is G-CSF. In another embodiment, the hematopoietic agent is filgrastim. In another embodiment, the hematopoietic agent is filgrastim and the therapeutically effective amount is at least 4 μg/kg. In another embodiment, the hematopoietic agent is filgrastim and the therapeutically effective amount of is a daily dose of at least 4 μg/kg for at least 7 days after the administration of SNS-595. In another embodiment, the hematopoietic agent is filgrastim and the therapeutically effective amount is a daily subcutaneous dose of between about 4 μg/kg and about 8 μg/kg for at least 7 days starting from the third day after the administration of SNS-595. In another embodiment, the hematopoietic agent is filgrastim and the therapeutically effective amount is a daily subcutaneous dose of between about 4 μg/kg and about 10 μg/kg for at least 14 days starting from the third day after the administration of SNS-595.
  • In another embodiment, the hematopoietic agent is pegfilgrastim. In another embodiment, the hematopoietic agent is pegfilgrastim and the therapeutically effective amount is 6 mg. In another embodiment, the hematopoietic agent is pegfilgrastim and the therapeutically effective amount is a daily subcutaneous dose of 6 mg after the administration of SNS-595. In another embodiment, the hematopoietic agent is pegfilgrastim and the therapeutically effective amount is 100 μg/kg. In another embodiment, the hematopoietic agent is pegfilgrastim and the therapeutically effective amount is a daily dose of 100 μg/kg after the administration of SNS-595.
  • In another embodiment, the hematopoietic agent is GM-CSF. In another embodiment, the hematopoietic agent is sargramostim. In another embodiment, the hematopoietic agent is sargramostim and the therapeutically effective amount is 250 μg/m2. In another embodiment, the hematopoietic agent is sargramostim and the therapeutically effective amount is a daily intravenous or subcutaneous dose of 250 μg/m2. In another embodiment, the hematopoietic agent is sargramostim and the therapeutically effective amount is a daily intravenous or subcutaneous dose of 250 μg/m2 as needed starting from the third day after the administration of SNS-595. In another embodiment, the hematopoietic agent is sargramostim and the therapeutically effective amount is a daily intravenous or subcutaneous dose of 250 μg/m2 as needed starting from the tenth day after the administration of SNS-595.
  • In another embodiment, the hematopoietic agent is erythropoietin. In another embodiment, the hematopoietic agent is epoetin alfa. In another embodiment, the hematopoietic agent is epoetin alfa and the therapeutically effective amount is at least 150 units/kg. In another embodiment, the hematopoietic agent is epoetin alfa and the therapeutically effective amount is an intravenous or subcutaneous dose of 150 units/kg three times a week after the administration of SNS-595. In another embodiment, the hematopoietic agent is epoetin alfa and the therapeutically effective amount is an intravenous or subcutaneous dose of 300 units/kg three times a week after the administration of SNS-595. In another embodiment, the hematopoietic agent is epoetin alfa and the therapeutically effective amount is 40,000 units. In another embodiment, the hematopoietic agent is epoetin alfa and the therapeutically effective amount is a weekly dose of 40,000 units after the administration of SNS-595.
  • In another embodiment, the hematopoietic agent is erythropoiesis stimulating protein. In another embodiment, the hematopoietic agent is darbepoetin alfa. In another embodiment, the hematopoietic agent is darbepoetin alfa and the therapeutically effective amount is between about 1.5 μg/kg and about 4.5 μg/kg. In another embodiment, the hematopoietic agent is darbepoetin alfa and the therapeutically effective amount is a weekly dose of between about 1.5 μg/kg and about 4.5 μg/kg
  • All cited references are incorporated herein by reference.
    • EXAMPLE 1
  • Pharmaceutical Composition Suitable for Injection or Intravenous Infusion
  • Acidic compositions (<pH 4) provided the appropriate balance of increased solubility of SNS-595 and desirable pharmaceutical properties (e.g. increased patient comfort by causing less irritation at the delivery site). An illustrative example of a suitable composition comprises: 10 mg SNS-595 per mL of aqueous solution of 4.5% sorbitol that is adjusted to pH 2.5 with methanesulfonic acid. One protocol for making such a solution includes the following for making a 100 mg/10 mL presentation: 100 mg of SNS-595 and 450 mg D-sorbitol are added to distilled water; the volume is brought up to a volume of 10 mL; and the pH of the resulting solution is adjusted to 2.5 with methanesulfonic acid. The resulting composition is also suitable for lyophilization. The lyophilized form is then reconstituted with sterile water to the appropriate concentration prior to use.
    • EXAMPLE 2
  • Pharmacokinetics of SNS-595 in Cancer Patients
  • SNS-595 was administered to enrolled patients for up to six cycles. A cycle is defined as a three-week period, with SNS-595 administered on the first day of each cycle (day 0), followed by at least 21 days of observation. SNS-595 was administered to cohorts of at least 3 patients and dose escalation occurred by sequential cohort. Doses of SNS-595 were linear with AUC ∞ and its pharmacokinetic properties were remarkably consistent among patients in the same cohort. FIG. 1 depicts the plasma concentrations of SNS-595 over time among the various patient cohorts and Table 1 shows the pharmacokinetic parameters derived there from.
    TABLE 1
    Dose Cmax AUClast AUCINF_obs Cl_obs Vz_obs Vss_obs MRTINF_obs
    (mg/m2) HL (hr) C0 (ng/mL) (ng/mL) (hr*ng/mL) (hr*ng/mL) (mL/min/kg) (L/kg) (L/kg) (hr)
    3 16.27 152.25 138.80 750.08 1139.55 1.14 1.55 1.44 21.96
    SD 4.871 82.282 80.568 87.622 263 0.318 0.297 0.277 6.836
    6 20.69 376.69 347.00 2400.00 2990.29 0.71 1.28 1.24 29.05
    SD 0.327 243.598 214.96 170.556 245.64 0.153 0.295 0.218 1.15
    12 17.81 2888.66 2246.67 5395.53 6329.15 0.76 1.17 1.07 23.67
    SD 3.896 1302.71 1065.145 292.281 181.804 0.126 0.258 0.184 5.021
    24 16.14 2924.46 2703.33 11133.03 12655.32 0.83 1.15 1.06 21.65
    SD 2.601 2884.702 2573.02 468.453 851.458 0.108 0.124 0.165 5.261
    48 21.32 1984.52 2868.00 21098.53 27347.36 0.99 1.57 1.46 28.90
    SD 6.32 189.677 2379.899 9405.346 14382.787 0.616 0.567 0.47 8.91
    60 17.63 4797.47 4537.50 28112.17 33616.18 0.83 1.20 1.08 23.71
    SD 4.15 2215.20 1947.89 9127.12 13081.44 0.352 0.37 0.218 6.93
    • EXAMPLE 3
  • Clinical Trial Data
  • SNS-595 was administered to patients with advanced solid cancers every 3 weeks as an IV fusion over 10 minutes without premedication. Cohorts of 3-6 patients were accrued to does based on a modified Fibonacci sequence. Forty patients (24 male and 16 female; median age=0.5 yrs, range 33-76) were treated in seven cohorts at doses starting at 3 mg/m2 and advancing to 75 mg/m2. Twenty five of these patients were heavily pretreated and five teen were minimally pretreated. Tumor types included ovarian (n=8), lung (n=7), colorectal (n=5), adenocarcinoma of unknown primary (n=4), renal (n=3), arcoma (n=3), pancreas (n=2), melanoma (n=2), breast (n=1), bladder (n=1), cholangiocarcinoma (n=1), Müllerian (n=1), neuroendocrine (n=1) and peritoneal (n=1).
  • Median ECOG (European Cooperative Oncology Group) performance status was 1 (range 0.2). For the heavily pretreated patients, the dose limiting toxicity (DLT) consisting of Grade 4 neutropenia for greater than 7 days was observed at 60 mg/m2. For minimally pretreated patients, one dose limiting toxicity has been seen at a dose of 75 mg/m2.
  • Non-hematologic toxicities were generally mild (grade ½), without dose-limiting gastro-intestinal or neurotoxicity. Pharmacokinetic parameters were evaluated in 36 patients (21 heavily pretreated and 15 minimally pretreated) after a single dose of 3 to 75 mg/m2. Clearance (CL), volume of distribution, and terminal half-life (T½) remained unchanged across all patients up to 48 mg/m2. In minimally pretreated patients, PK parameters remained unchanged up to 75 mg/m2. CL was 2.2 L/hr/m2 (range of 1.0-3.8 L/hr/m2), the volume of distribution was 53 L/m2 (range of 31-76 L/m2), and the T½ was approximately 20 hr (range of 13-49 hr). Exposure was similar for both heavily and minimally pretreated patients and increased linearly with doses up to 48 mg/m2. Exposure for minimally pretreated patients continued to increase linearly up to 75 Mg/m2, whereas heavily pretreated patients showed a greater than dose linear AUC (area under the curve) at the 60 mg/m2 dose level. Ten of 36 evaluable patients achieved stabilization of disease for greater than 4 cycles.

Claims (25)

1. A method for treating cancer comprising administering to a patient a dose of 10 mg/m2-100 mg/m2 of SNS-595.
2. The method of claim 1 wherein the dose is 15 mg/m2-80 mg/m2.
3. The method of claim 1 wherein the cancer being treated is selected from the group consisting of bladder cancer, breast cancer, cervical cancer, colon cancer, esophageal cancer, head and neck cancer, leukemia, liver cancer, lung cancer, lymphoma, melanoma, myeloma, neuroblastoma, ovarian cancer, pancreatic cancer, prostate cancer, renal cancer, sarcoma, skin cancer, stomach cancer, testicular cancer, thyroid cancer, and uterine cancer.
4. The method of claim 1 additionally comprising administering to a patient a therapeutically effective dose of a supportive care agent.
5. The method of claim 4 wherein the supportive care agent is an antiemetic.
6. The method of claim 4 wherein the supportive care agent is a hematopoietic agent.
7. A method of treating a solid tumor comprising:
i) administering a dose of 10 mg/m2-100 mg/m2 of SNS-595 to a patient;
ii) waiting a period of at least six days where the subject is not administered any SNS-595;
iii) administering another dose of 10 mg/m2-100 mg/m2 of SNS-595 to the patient; and,
iv) repeating steps ii)-iii) a plurality of times.
8. A method of treating a solid tumor comprising administering a dose of 15 mg/m2-40 mg/m2 of SNS-595 to a patient once a week wherein the one-week period comprises a treatment cycle and the treatment cycle is repeated at least twice.
9. A method of treating a solid tumor comprising administering a dose of 35 mg/m2-80 mg/m2 of SNS-595 to a patient once in a three week period wherein the three week period comprises a treatment cycle and the treatment cycle is repeated at least twice.
10. The method of claim 9 wherein the patient is a heavily pretreated patient and the dose is 35 mg/m2-60 mg/m2.
11. The method of claim 9 wherein the patient is a heavily pretreated patient and the dose is 40 mg/m2-50 mg/m2.
12. The method of claim 9 wherein the patient is a heavily pretreated patient and the dose is 45 mg/m2-50 mg/m2.
13. The method of claim 9 wherein the patient is a minimally pretreated patient and the dose is 45 mg/m2-80 mg/m2.
14. The method of claim 9 wherein the patient is a minimally pretreated patient and the dose is 50 mg/m2-75 mg/m2.
15. The method of claim 9 wherein the patient is a minimally pretreated patient and the dose is 55 mg/m2-65 mg/m2.
16. A method of treating a hematologic cancer comprising:
i) administering a dose of 10 mg/m2-50 mg/m2 of SNS-595 to a patient;
ii) waiting a period of at least two days where the subject is not administered any SNS-595;
iii) administering another dose of 10 mg/m2-50 mg/m2 of SNS-595 to the patient; and,
iv) repeating steps ii)-iii) a plurality of times.
17. The method of claim 16 wherein the dose 20 mg/m2-40 mg/m2 and the waiting period is six days.
18. The method of claim 16 wherein the dose is 10 mg/m2-20 mg/m2 and the waiting period is two or three days.
19. A method comprising a cycle wherein the cycle comprises administering a dose of SNS-595 to a subject once a week for three weeks followed by a period of at least two weeks where no SNS-595 is administered to said subject and wherein the cycle is repeated a plurality of times.
20. The method of claim 19 wherein the dose is 15 mg/m2-40 mg/m2.
21. A method for treating cancer comprising administering to a patient a dose of 10 mg/m2-100 mg/m2 of SNS-595 and administering a patient a therapeutically effective dose of a hematopoietic agent.
22. The method of claim 21 wherein the hematopoietic agent is G-CSF.
23. The method of claim 21 wherein the hematopoietic agent is GM-CSF.
24. The method of claim 21 wherein the hematopoietic agent is erythropoietin.
25. The method of claim 21 wherein the hematopoietic agent is erythropoiesis stimulating protein.
US11/218,387 2004-03-15 2005-09-02 SNS-595 and methods of using the same Pending US20060025437A1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
US11/218,387 US20060025437A1 (en) 2004-03-15 2005-09-02 SNS-595 and methods of using the same
BRPI0615446-8A BRPI0615446A2 (en) 2005-09-02 2006-09-05 use of (+) 1,4-dihydro-7 - [(3s, 4s) -3-methoxy-4- (methylamino) -1-pyrrolidinyl] -4-oxo-1- (2-thiazolyl) - Enantiomerically pure 1,8-naphthyridine-3-carboxylic e, (+) 1,4-dihydro-7- [3s, 4s) -3-methoxy-4- (methylamino) -1-pyrrolidinyl] -4-acid compound enantiomerically pure-oxo-1- (2-thiazolyl) -1,8-naphthyridine -3-carboxylic
PCT/US2006/034699 WO2007028171A1 (en) 2005-09-02 2006-09-05 Methods of using (+)-1,4-dihydro-7-[(3s,4s)-3-methoxy-4-(methylamino)-1-pyrrolidinyl]-4-oxo-1-(2-thiazolyl)-1,8-naphthyridine-3-carboxylic acid for treatment of cancer
MX2008002843A MX2008002843A (en) 2005-09-02 2006-09-05 Methods of using (+)-1,4-dihydro-7-[(3s,4s)-3-methoxy-4-(methylam ino)-1-pyrrolidinyl]-4-oxo-1-(2-thiazolyl)-1,8-naphthyridine-3-c arboxylic acid for treatment of cancer.
EP06814231.4A EP1931339B1 (en) 2005-09-02 2006-09-05 Methods of using (+)-1,4-dihydro-7-[(3s,4s)-3-methoxy-4-(methylamino)-1-pyrrolidinyl]-4-oxo-1-(2-thiazolyl)-1,8-naphthyridine-3-carboxylic acid for treatment of cancer
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