US20110105521A1 - Combination of (a) a phosphoinositide 3-kinase inhibitor and (b) a modulator of ras/raf/mek pathway - Google Patents

Combination of (a) a phosphoinositide 3-kinase inhibitor and (b) a modulator of ras/raf/mek pathway Download PDF

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US20110105521A1
US20110105521A1 US13/003,581 US200913003581A US2011105521A1 US 20110105521 A1 US20110105521 A1 US 20110105521A1 US 200913003581 A US200913003581 A US 200913003581A US 2011105521 A1 US2011105521 A1 US 2011105521A1
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compound
combination
raf
modulates
ras
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Carlos Garcia-Echeverria
Sauveur-Michel Maira
Darrin Stuart
Susan Wee
Christine Fritsch
Tobi Nagel
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Novartis AG
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/33—Heterocyclic compounds
    • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
    • A61K31/47—Quinolines; Isoquinolines
    • A61K31/4738—Quinolines; Isoquinolines ortho- or peri-condensed with heterocyclic ring systems
    • A61K31/4745—Quinolines; Isoquinolines ortho- or peri-condensed with heterocyclic ring systems condensed with ring systems having nitrogen as a ring hetero atom, e.g. phenantrolines
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/16—Amides, e.g. hydroxamic acids
    • A61K31/165—Amides, e.g. hydroxamic acids having aromatic rings, e.g. colchicine, atenolol, progabide
    • A61K31/166—Amides, e.g. hydroxamic acids having aromatic rings, e.g. colchicine, atenolol, progabide having the carbon of a carboxamide group directly attached to the aromatic ring, e.g. procainamide, procarbazine, metoclopramide, labetalol
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/33—Heterocyclic compounds
    • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/41—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with two or more ring hetero atoms, at least one of which being nitrogen, e.g. tetrazole
    • A61K31/4164—1,3-Diazoles
    • A61K31/4188—1,3-Diazoles condensed with other heterocyclic ring systems, e.g. biotin, sorbinil
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/33—Heterocyclic compounds
    • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
    • A61K31/4353—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom ortho- or peri-condensed with heterocyclic ring systems
    • A61K31/437—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom ortho- or peri-condensed with heterocyclic ring systems the heterocyclic ring system containing a five-membered ring having nitrogen as a ring hetero atom, e.g. indolizine, beta-carboline
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/33—Heterocyclic compounds
    • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
    • A61K31/44—Non condensed pyridines; Hydrogenated derivatives thereof
    • A61K31/4427—Non condensed pyridines; Hydrogenated derivatives thereof containing further heterocyclic ring systems
    • A61K31/4439—Non condensed pyridines; Hydrogenated derivatives thereof containing further heterocyclic ring systems containing a five-membered ring with nitrogen as a ring hetero atom, e.g. omeprazole
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/33—Heterocyclic compounds
    • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/535—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with at least one nitrogen and one oxygen as the ring hetero atoms, e.g. 1,2-oxazines
    • A61K31/5375—1,4-Oxazines, e.g. morpholine
    • A61K31/5377—1,4-Oxazines, e.g. morpholine not condensed and containing further heterocyclic rings, e.g. timolol
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K45/00—Medicinal preparations containing active ingredients not provided for in groups A61K31/00 - A61K41/00
    • A61K45/06—Mixtures of active ingredients without chemical characterisation, e.g. antiphlogistics and cardiaca
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
    • A61P1/18—Drugs for disorders of the alimentary tract or the digestive system for pancreatic disorders, e.g. pancreatic enzymes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P35/00—Antineoplastic agents
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P35/00—Antineoplastic agents
    • A61P35/02—Antineoplastic agents specific for leukemia
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D487/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
    • C07D487/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00 in which the condensed system contains two hetero rings
    • C07D487/04—Ortho-condensed systems

Definitions

  • the invention relates to a pharmaceutical combination which comprises (a) a phosphoinositide 3-kinase (PI3K) inhibitor compound and (b) a compound which modulates the Ras/Raf/Mek pathway and optionally at least one pharmaceutically acceptable carrier for simultaneous, separate or sequential use, in particular for the treatment of a proliferative disease, especially a proliferative disease in which the Ras/Raf/MeK and PI3K/Akt pathways are concomitantly dysregulated; a pharmaceutical composition comprising such a combination; the use of such a combination for the preparation of a medicament for the treatment of a proliferative disease; a commercial package or product comprising such a combination as a combined preparation for simultaneous, separate or sequential use; and to a method of treatment of a warm-blooded animal, especially a human.
  • PI3K phosphoinositide 3-kinase
  • WO2006/122806 describes imidazoquinoline derivatives, which have been described to inhibit the activity of lipid kinases, such as PI3-kinases.
  • Specific imidazoquinoline derivatives which are suitable for the present invention, their preparation and suitable pharmaceutical formulations containing the same are described in WO2006/122806 and include compounds of formula I
  • R 1 is naphthyl or phenyl wherein said phenyl is substituted by one or two substituents independently selected from the group consisting of Halogen; lower alkyl unsubstituted or substituted by halogen, cyano, imidazolyl or triazolyl; cycloalkyl; amino substituted by one or two substituents independently selected from the group consisting of lower alkyl, lower alkyl sulfonyl, lower alkoxy and lower alkoxy lower alkylamino; piperazinyl unsubstituted or substituted by one or two substituents independently selected from the group consisting of lower alkyl and lower alkyl sulfonyl; 2-oxo-pyrrolidinyl; lower alkoxy lower alkyl; imidazolyl; pyrazolyl; and triazolyl;
  • R 2 is O or S
  • R 3 is lower alkyl
  • R 4 is pyridyl unsubstituted or substituted by halogen, cyano, lower alkyl, lower alkoxy or piperazinyl unsubstituted or substituted by lower alkyl; pyrimidinyl unsubstituted or substituted by lower alkoxy; quinolinyl unsubstituted or substituted by halogen; quinoxalinyl; or phenyl substituted with alkoxy
  • R 5 is hydrogen or halogen
  • n 0 or 1
  • R 6 is oxido
  • R 7 is hydrogen or amino
  • a preferred compound of the present invention is a compound which is specifically described in WO2006/122806.
  • a very preferred compound of the present invention is 2-methyl-2-[4-(3-methyl-2-oxo-8-quinolin-3-yl-2,3-dihydro-imidazo[4,5-c]quinolin-1-yl)-phenyl]-propionitrile and its monotosylate salt (COMPOUND A).
  • the synthesis of 2-methyl-2-[4-(3-methyl-2-oxo-8-quinolin-3-yl-2,3-dihydro-imidazo[4,5-c]quinolin-1-yl)-phenyl]-propionitrile is for instance described in WO2006/122806 as Example 1.
  • Another very preferred compound of the present invention is 8-(6-methoxy-pyridin-3-yl)-3-methyl-1-(4-piperazin-1-yl-3-trifluoromethyl-phenyl)-1,3-dihydro-imidazo[4,5-c]quinolin-2-one (COMPOUND B).
  • the synthesis of 8-(6-methoxy-pyridin-3-yl)-3-methyl-1-(4-piperazin-1-yl-3-trifluoromethyl-phenyl)-1,3-dihydro-imidazo[4,5-c]quinolin-2-one is for instance described in WO2006/122806 as Example 86.
  • WO07/084,786 describes pyrimidine derivatives, which have been found the activity of lipid kinases, such as PI3-kinases. Specific pyrimidine derivatives which are suitable for the present invention, their preparation and suitable pharmaceutical formulations containing the same are described in WO07/084,786 and include compounds of formula I
  • a preferred compound of the present invention is a compound which is specifically described in WO07/084,786.
  • a very preferred compound of the present invention is 5-(2,6-di-morpholin-4-yl-pyrimidin-4-yl)-4-trifluoromethyl-pyridin-2-ylamine (COMPOUND C).
  • the synthesis of 5-(2,6-di-morpholin-4-yl-pyrimidin-4-yl)-4-trifluoromethyl-pyridin-2-ylamine is described in WO07/084,786 as Example 10.
  • the Ras/Raf/Mek signal transduction pathway is activated through the initial extracellular binding and stimulation of RTKs by their respective cognate ligands.
  • the Grb2-Sos complex translocates to the plasma membrane, and converts the inactive Ras ⁇ GDP to active Ras ⁇ GTP.
  • the interaction between Grb2 and the activated kinases or the phosphorylated receptor associated proteins is mediated by the SH2 domain of the signalling protein that recognizes specific phosphotyrosine sequences.
  • Raf Ras undergoes a conformational changes upon GTP binding and causes the recruitment of Raf-1 to the cytoplasmic membrane where is phosphorylated by several kinases and simultaneous disphosphorylated at key residues by protein phosphatase-2B.
  • Activated Raf phosphorylates Mek on two serine residues in the activation loop, which results in the activation of this protein kinase.
  • Mek then phosphorylates and activates Erk, allowing its translocation to the nucleus where it phosphorylates transcriptional factors permitting the expression of a variety of genes.
  • several components of the Raf/Mek/Erk cascade represent unique opportunities for cancer treatment, e.g. genetic alterations such as HRAS, KRAS, NRAS or BRAF mutations or gene amplifications.
  • Sorafenib also known as NexavarTM or BAY 43-9006, has been the first Raf kinase modulator to receive marketing approval for treatment of advanced renal cell carcinoma (RCC).
  • Sorafenib is a bi-aryl urea derivative of the following structure:
  • Sorafenib and methods for its preparation have been described e.g. in U.S. Pat. No. 7,235,576 or U.S. Pat. No. 7,351,834.
  • RAF265 (previously known as CHIR-265) is another orally bioavailable Raf modulator of following structure:
  • RAF265 and methods for its preparation for are for instance described in WO07/030,377.
  • Raf kinase modulators include for instance SB590885, XL281, PLX4032.
  • Mek kinase modulators include compounds described in WO02/06213, in particular compound PD-0325901 which has following structure:
  • Mek kinase inhibitor is compound PD-181461.
  • Mek kinase modulators include compounds described in WO03/077914, in particular compound ARRY1428861/AZD6244 of structure
  • Mek kinase modulators include for instance XL518, JTP-74057, AS-701255, AS-701173.
  • the present invention also pertains to a combination such as a combined preparation or a pharmaceutical composition which comprises (a) a phosphoinositide 3-kinase (PI3K) inhibitor compound and (b) a compound which modulates the Ras/Raf/Mek pathway. More particularly, in a first embodiment, the present invention relates to a combination which comprises (a) a phosphoinositide 3-kinase (PI3K) inhibitor compound and (b) a Raf kinase modulator or Mek kinase modulator.
  • PI3K phosphoinositide 3-kinase
  • a combined preparation defines especially a “kit of parts” in the sense that the combination partners (a) and (b) as defined above can be dosed independently or by use of different fixed combinations with distinguished amounts of the combination partners (a) and (b), i.e. simultaneously or at different time points.
  • the parts of the kit of parts can then, e.g., be administered simultaneously or chronologically staggered, that is at different time points and with equal or different time intervals for any part of the kit of parts.
  • the ratio of the total amounts of the combination partner (a) to the combination partner (b) to be administered in the combined preparation can be varied, e.g. in order to cope with the needs of a patient sub-population to be treated or the needs of the single.
  • combination therapy with an PI3K inhibitor and a raf-kinase or mek-kinase inhibitor results in unexpected improvement in the treatment of tumor diseases.
  • the PI3K inhibitor and the raf-kinase or mek-kinase inhibitor interact in a synergistic manner to inhibit cell proliferation. This unexpected synergy allows a reduction in the dose required of each compound, leading to a reduction in the side effects and enhancement of the clinical effectiveness of the compounds and treatment.
  • the optimum range for the effect and absolute dose ranges of each component for the effect may be definitively measured by administration of the components over different w/w ratio ranges and doses to patients in need of treatment.
  • the complexity and cost of carrying out clinical studies on patients renders impractical the use of this form of testing as a primary model for synergy.
  • the observation of synergy in one species can be predictive of the effect in other species and animal models exist, as described herein, to measure a synergistic effect and the results of such studies can also be used to predict effective dose and plasma concentration ratio ranges and the absolute doses and plasma concentrations required in other species by the application of pharmacokinetic/pharmacodynamic methods.
  • Established correlations between tumor models and effects seen in man suggest that synergy in animals may e.g. be demonstrated in the BN472 tumor model or pancreatic PANC1 and MiaPaCa2 tumor models as described in the Examples below.
  • the present invention provides a synergistic combination for human administration comprising (a) PI3K inhibitor compound and (b) a compound which modulates the Ras/Raf/Mek pathway, or pharmaceutically acceptable salts or solvates thereof, in a combination range (w/w) which corresponds to the ranges observed in a tumor model, e.g. as described in the Examples below, used to identify a synergistic interaction.
  • the ratio range in humans corresponds to a non-human range selected from between 50:1 to 1:50 parts by weight, 50:1 to 1:20, 50:1 to 1:10, 50:1 to 1:1, 20:1 to 1:50, 20:1 to 1:20, 20:1 to 1:10, 20:1 to 1:1, 10:1 to 1:50, 10:1 to 1:20, 10:1 to 1:10, 10:1 to 1:1, 1:1 to 1:50, 1.1 to 1:20 and 1:1 to 1:10. More suitably, the human range corresponds to a non-human range of the order of 10:1 to 1:1 or 5:1 to 1:1 or 2:1 to 1:1 parts by weight.
  • the present invention provides a synergistic combination for administration to humans comprising an (a) a PI3K inhibitor compound and (b) a compound which modulates the Ras/Raf/Mek pathway or pharmaceutically acceptable salts thereof, where the dose range of each component corresponds to the synergistic ranges observed in a suitable tumor model, e.g. the tumor models described in the Examples below, primarily used to identify a synergistic interaction.
  • a suitable tumor model e.g. the tumor models described in the Examples below, primarily used to identify a synergistic interaction.
  • the dose range of the PI3K inhibitor compound in human corresponds to a dose range of 1-50 mg/kg, more suitably 1-30 mg/kg (e.g. 1-35 mg/kg or 1-10 mg/kg for Compound A, 1-25 mg/kg for Compound B) in a suitable tumor model, e.g. a rat or mouse model as described in the Examples below.
  • the dose range in the human suitably corresponds to a synergistic range of 1-50 mg/kg or 1-30 mg/kg (e.g. 1-25 mg/kg, 1-10 mg/kg or 1-2.5 mg/kg) in a suitable tumor model, e.g. a rat or mouse model as described in the Examples below.
  • a suitable tumor model e.g. a rat or mouse model as described in the Examples below.
  • the dose of PI3K inhibitor compound for use in a human is in a range selected from 1-1200 mg, 1-500 mg, 1-100 mg, 1-50 mg, 1-25 mg, 500-1200 mg, 100-1200 mg, 100-500 mg, 50-1200 mg, 50-500 mg, or 50-100 mg, suitably 50-100 mg, once daily or twice daily (b.i.d.) or three times per day (t.i.d.), and the dose of compound which modulates the Ras/Raf/Mek pathway is in a range selected from 1-1000 mg, 1-500 mg, 1-200 mg, 1-100 mg, 1-50 mg, 1-25 mg, 10-100 mg, 10-200 mg, 50-200 mg or 100-500 mg once daily, b.i.d or t.i.d.
  • the present invention provides a synergistic combination for administration to humans comprising an (a) a PI3K inhibitor compound at 10%-100%, preferably 50%-100% or more preferably 70%-100%, 80%-100% or 90%-100% of the maximal tolerable dose (MTD) and (b) a compound which modulates the Ras/Raf/Mek pathway at 10%-100%, preferably 50%-100% or more preferably 70%-100%, 80%-100% or 90%-100% of the MTD.
  • a PI3K inhibitor compound at 10%-100%, preferably 50%-100% or more preferably 70%-100%, 80%-100% or 90%-100% of the maximal tolerable dose (MTD)
  • MTD maximal tolerable dose
  • one of the compounds is dosed at the MTD and the other compound, preferably the compound which modulates the Ras/Raf/Mek pathway, is dosed at 50%-100% of the MTD, preferably at 60%-90% of the MTD.
  • the MTD corresponds to the highest dose of a medicine that can be given without unacceptable side effects. It is within the art to determine the MTD. For instance the MTD can suitably be determined in a Phase I study including a dose escalation to characterize dose limiting toxicities and determination of biologically active tolerated dose level.
  • the phosphoinositide 3-kinase (PI3K) inhibitor compound inhibitor is selected from the group consisting of COMPOUND A, COMPOUND B or COMPOUND C.
  • the Raf kinase modulator is selected from the group consisting of Sorafenib, Raf265, SB590885, XL281 and PLX4032.
  • the Mek kinase modulator is selected from the group consisting of PD325901, PD-181461, ARRY142886/AZD6244, ARRY-509, XL518, JTP-74057, AS-701255, AS-701173, AZD8330, ARRY162, ARRY300, RDEA436, E6201, RO4987655/R-7167, GSK1120212 and AS703026.
  • treating comprises the a treatment effecting a delay of progression of a disease.
  • delay of progression means administration of the combination to patients being in a pre-stage or in an early phase of the proliferative disease to be treated, in which patients for example a pre-form of the corresponding disease is diagnosed or which patients are in a condition, e.g. during a medical treatment or a condition resulting from an accident, under which it is likely that a corresponding disease will develop.
  • the proliferative disease is melanoma, lung cancer, colorectal cancer (CRC), breast cancer, kidney cancer such as e.g. renal cell carcinoma (RCC), liver cancer, acute myelogenous leukemia (AML), myelodysplastic Syndromes (MDS), non-small-cell lung cancer (NSCLC), thyroid cancer, pancreatic cancer, neurofibromatosis or hepatocellular carcinoma.
  • CRC renal cell carcinoma
  • AML acute myelogenous leukemia
  • MDS myelodysplastic Syndromes
  • NSCLC non-small-cell lung cancer
  • the proliferative disease is a solid tumor.
  • solid tumor especially means breast cancer, ovarian cancer, cancer of the colon and generally the GI (gastro-intestinal) tract, cervix cancer, lung cancer, in particular small-cell lung cancer, and non-small-cell lung cancer, head and neck cancer, bladder cancer, cancer of the prostate or Kaposi's sarcoma.
  • the present combination inhibits the growth of solid tumors, but also liquid tumors. Furthermore, depending on the tumor type and the particular combination used a decrease of the tumor volume can be obtained.
  • the combinations disclosed herein are also suited to prevent the metastatic spread of tumors and the growth or development of micrometastases.
  • the combinations disclosed herein are in particular suitable for the treatment of poor prognosis patients, especially such poor prognosis patients having metastatic melanome or pancreatic cancer.
  • the cancer to be treated can have a genetic alteration in the Ras/Raf/Mek signal transduction pathway such as e.g. a HRAS, KRAS, NRAS or BRAF mutation or gene amplification.
  • the cancer to be treated has a KRAS mutation, e.g. KRAS mutated pancreas cancer, colon cancer, lung cancer (e.g. NSCLC) or leukemias.
  • references to the combination partners (a) and (b) are meant to also include the pharmaceutically acceptable salts. If these combination partners (a) and (b) have, for example, at least one basic center, they can form acid addition salts. Corresponding acid addition salts can also be formed having, if desired, an additionally present basic center.
  • the combination partners (a) and (b) having an acid group (for example COOH) can also form salts with bases.
  • the combination partner (a) or (b) or a pharmaceutically acceptable salt thereof may also be used in form of a hydrate or include other solvents used for crystallization.
  • a combination which comprises (a) a phosphoinositide 3-kinase inhibitor compound and (b) a compound which modulates the Ras/Raf/Mek pathway, in which the active ingredients are present in each case in free form or in the form of a pharmaceutically acceptable salt and optionally at least one pharmaceutically acceptable carrier, will be referred to hereinafter as a COMBINATION OF THE INVENTION.
  • the pharmacological activity of a COMBINATION OF THE INVENTION may, for example, be demonstrated in a clinical study or in a test procedure as essentially described hereinafter.
  • Suitable clinical studies are, for example, open label non-randomized, dose escalation studies in patients with advanced solid tumors. Such studies can prove the additive or synergism of the active ingredients of the COMBINATIONS OF THE INVENTION.
  • the beneficial effects on proliferative diseases can be determined directly through the results of these studies or by changes in the study design which are known as such to a person skilled in the art.
  • Such studies are, in particular, suitable to compare the effects of a monotherapy using the active ingredients and a COMBINATION OF THE INVENTION.
  • the combination partner (a) is administered with a fixed dose and the dose of the combination partner (b) is escalated until the Maximum Tolerated Dosage is reached.
  • It is one objective of this invention to provide a pharmaceutical composition comprising a quantity, which is therapeutically effective against a proliferative disease comprising the COMBINATION OF THE INVENTION.
  • the combination partners (a) and (b) can be administered together, one after the other or separately in one combined unit dosage form or in two separate unit dosage forms.
  • the unit dosage form may also be a fixed combination.
  • compositions according to the invention can be prepared in a manner known per se and are those suitable for enteral, such as oral or rectal, and parenteral administration to mammals (warm-blooded animals), including man.
  • enteral such as oral or rectal
  • parenteral administration to mammals (warm-blooded animals), including man.
  • the agents when the agents are administered separately, one can be an enteral formulation and the other can be administered parenterally.
  • the novel pharmaceutical composition contain, for example, from about 10% to about 100%, preferably from about 20% to about 60%, of the active ingredients.
  • Pharmaceutical preparations for the combination therapy for enteral or parenteral administration are, for example, those in unit dosage forms, such as sugar-coated tablets, tablets, capsules or suppositories, and furthermore ampoules. If not indicated otherwise, these are prepared in a manner known per se, for example by means of conventional mixing, granulating, sugar-coating, dissolving or lyophilizing processes. It will be appreciated that the unit content of a combination partner contained in an individual dose of each dosage form need not in itself constitute an effective amount since the necessary effective amount can be reached by administration of a plurality of dosage units.
  • any of the usual pharmaceutical media may be employed, such as, for example, water, glycols, oils, alcohols, flavoring agents, preservatives, coloring agents; or carriers such as starches, sugars, microcrystalline cellulose, diluents, granulating agents, lubricants, binders, disintegrating agents and the like in the case of oral solid preparations such as, for example, powders, capsules and tablets, with the solid oral preparations being preferred over the liquid preparations. Because of their ease of administration, tablets and capsules represent the most advantageous oral dosage unit form in which case solid pharmaceutical carriers are obviously employed.
  • a therapeutically effective amount of each of the combination partner of the COMBINATION OF THE INVENTION may be administered simultaneously or sequentially and in any order, and the components may be administered separately or as a fixed combination.
  • the method of delay of progression or treatment of a proliferative disease according to the invention may comprise (i) administration of the first combination partner in free or pharmaceutically acceptable salt form and (ii) administration of the second combination partner in free or pharmaceutically acceptable salt form, simultaneously or sequentially in any order, in jointly therapeutically effective amounts, preferably in synergistically effective amounts.
  • the individual combination partners of the COMBINATION OF THE INVENTION can be administered separately at different times during the course of therapy or concurrently in divided or single combination forms.
  • administering also encompasses the use of a pro-drug of a combination partner that convert in vivo to the combination partner as such.
  • the instant invention is therefore to be understood as embracing all such regimes of simultaneous or alternating treatment and the term “administering” is to be interpreted accordingly.
  • the COMBINATION OF THE INVENTION can be a combined preparation or a pharmaceutical composition.
  • the present invention relates to a method of treating a warm-blooded animal having a proliferative disease comprising administering to the animal a COMBINATION OF THE INVENTION in a quantity which is therapeutically effective against said proliferative disease.
  • the present invention pertains to the use of a COMBINATION OF THE INVENTION for the treatment of a proliferative disease and for the preparation of a medicament for the treatment of a proliferative disease.
  • the present invention provides a commercial package comprising as active ingredients COMBINATION OF THE INVENTION, together with instructions for simultaneous, separate or sequential use thereof in the delay of progression or treatment of a proliferative disease.
  • the invention provides combinations comprising
  • the present invention relates to a combined preparation, which comprises (a) one or more unit dosage forms of a phosphoinositide 3-kinase inhibitor compound and (b) a compound which modulates the Ras/Raf/Mek pathway.
  • the present invention pertains to the use of a combination comprising (a) a phosphoinositide 3-kinase inhibitor compound and (b) a compound which modulates the Ras/Raf/Mek pathway for the preparation of a medicament for the treatment of a proliferative disease.
  • the effective dosage of each of the combination partners employed in the COMBINATION OF THE INVENTION may vary depending on the particular compound or pharmaceutical composition employed, the mode of administration, the condition being treated, the severity of the condition being treated.
  • the dosage regimen the COMBINATION OF THE INVENTION is selected in accordance with a variety of factors including the route of administration and the renal and hepatic function of the patient.
  • a physician, clinician or veterinarian of ordinary skill can readily determine and prescribe the effective amount of the single active ingredients required to prevent, counter or arrest the progress of the condition.
  • Optimal precision in achieving concentration of the active ingredients within the range that yields efficacy without toxicity requires a regimen based on the kinetics of the active ingredients' availability to target sites.
  • COMPOUND A may be administered to a human in a dosage range varying from about 50 to 800 mg/day.
  • COMPOUND B may be administered to a human in a dosage range varying from about 25 to 800 mg/day.
  • COMPOUND C may be administered to a human in a dosage range varying from about 25 to 800 mg/day.
  • Sorafenib may be administered to a human in a dosage range varying from about 75 to 800 mg/day, more preferable 400 mg taken twice daily.
  • FIG. 1 A549 cells were incubated either with compound A, PD03251901 (250 nM) alone or in combination for 30 min. Cells were then harvested and estimation of phosphorylated levels of either Akt; p70S6K or ERK done by regular Western-blotting.
  • FIG. 2 Rat bearing BN472 tumors were treated with the indicated compound at the indicated dose and schedule, either alone or in combination. Evolution of tumor growth were followed by callipering throughout the course of the study. *, P ⁇ 0.05 (Dunnett's).
  • FIG. 3 Rat bearing BN472 tumors were treated with the indicated compound at the indicated dose and schedule, either alone or in combination. Evolution of body weight were followed throughout the course of the study. *, P ⁇ 0.05 (Dunnett's).
  • FIG. 4 KRAS mutant PANC1 cells were grown subcutaneously on the flank of Harlan nude mice and treated with either compound A, AZD6244 alone or in combination for 12 days. Evolutions of Tumor volume (A) and body weight (B) were measured throughout the course of the study. *, p ⁇ 0.05 (Dunnett's).
  • FIG. 5 KRAS mutant MiaPaCa2 cells were grown subcutaneously on the flank of Harlan nude mice and treated with either compound A, AZD6244 alone or in combination for 12 days. Evolutions of Tumor volume (A) and body weight (B) were measured throughout the course of the study. *, p ⁇ 0.05 (Dunnett's).
  • FIG. 6 KRAS mutant MiaPaCa2 cells were grown subcutaneously on the flank of Harlan nude mice and treated with either 5-(2,6-di-morpholin-4-yl-pyrimidin-4-yl)-4-trifluoromethyl-pyridin-2-ylamine (COMPOUND C, termed here cpd B), AZD6244 alone or in combination for 12 days. Evolutions of Tumor volume (A) and body weight (B) were measured throughout the course of the study. *, p ⁇ 0.05 (Dunnett's).
  • the MEK inhibitor PD0325901 synergizes with compound A in an antiproliferative assay.
  • the KRAS mutant NSCLC cell line was used in a standard methylene blue proliferation assay.
  • compound A and PD0325901 inhibited the proliferation with a GI50 (that is the concentration for which 50% of growth inhibition is observed) of 9.41 and 36.8 nM respectively (Table 1).
  • a GI50 for BEZ235 decrease to 3.2 nM, that is to say to say that in presence of PD0325901, 3 times less BEZ235 is required to observe a similar decrease in proliferation.
  • the GI50 for PD0325901 decreased to 11.5 nM in presence of compound A.
  • the combination Index obtained is of 0.718, which correspond to a moderate synergism (Table 2).
  • A549 cells were incubated with increasing amount of either compound A or PD0325901 (NVP-LBW624) alone or in combination, for 72 h and proliferation assessed with a standard methylene blue assay.
  • the GI50 were determined and Cl quantified with the CalcuSyn software.
  • KRAS mutant PANC1 cells were grown subcutaneously on the flank of Harlan nude mice. Tumor bearing animals were then treated with the indicated compounds and dosage regimen in FIG. 4 . Evolutions of Tumor volume (A) and body weight (B) were measured throughout the course of the study, until day 12 at which time the animals were sacrificed. *, p ⁇ 0.05, One way ANOVA followed by Tukey post hoc test, showing that the antitumor activity obtained in the combo group is significantly different from the control and single agent treated groups (synergistic activity between the two compounds).
  • KRAS mutant MiaPaCa2 cells were grown subcutaneously on the flank of Harlan nude mice. Tumor bearing animals were then treated with the indicated compounds and dosage regimen in FIGS. 5 and 6 . Evolutions of Tumor volume (A) and body weight (B) were measured throughout the course of the study, until day 12 at which time the animals were sacrificed. *, p ⁇ 0.05, One way ANOVA followed by Tukey post hoc test, showing that the antitumor activity obtained in the combo group is significantly different from the control and single agent treated groups (synergistic activity between the two compounds).

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