45 results about "EGFR Tyrosine Kinase Inhibitors" patented technology

The invention discloses an epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor, and the structural formula of the inhibitor is shown as in the formula (I). The invention further discloses an application of any compound shown as in the formula (I) and pharmacy-acceptable salt of the compound. The invention further provides a medicine compound for curing, and the medicine compound comprises the compound shown as in the formula (I) and an EGFR modifier.

Belonging to the technical field of medicine, the invention in particular relates to a zinc binding group-containing irreversible EGFR (epidermal growth factor receptor) tyrosine kinase inhibitor shown as general formula (I), its deuterated compounds, pharmaceutically acceptable salts or stereoisomers, wherein R1, R2, R3, R4, R5, R6, R7, W, X, L, T, and n are defined as the specification. The invention also relates to a preparation method of the compounds, pharmaceutical preparations containing the compounds, and application of the compounds in preparation of drugs treating and/or preventing tumors. (formula I).

The invention relates to a test method of KRAS gene mutation for screening and assessing therapeutic effects of molecular targeted agents, which is characterized by the following specific steps: acquiring serum or tumor tissue samples of testees, extracting genomic DNA, testing a No.2 exon of the KRAS gene, designing corresponding site-specific primers and adopting experimental schemes, reagents and report generation systems for sequence determination and assessing the effectiveness of EGFR tyrosine kinase inhibitors used for treating cancer individuals by simultaneously testing and analyzingwhether mutation exists on the No.2 exon of the individual KRAS gene. The method has the advantage of being used for application of the EGFR tyrosine kinase inhibitors used for treating cancer individuals.

Novel compounds and pharmaceutical compositions useful as EGFR tyrosine kinase inhibitors. Methods of the invention include administration of the EGFR TK inhibitors to treat diseases characterized by enhanced expression of EGF, including cancers, particularly breast cancer. Additionally, a homology model representing the structure of EGFR kinase domain is provided, which model is useful for the rationally design and screening of compounds predicted to bind favorably to EGFR and to inhibit EGFR TK.

The present invention provides methods for individualizing chemotherapy for cancer treatment, and particularly for evaluating a patient's responsiveness to one or more epidermal growth factor receptor (EGFR) inhibitors prior to treatment with such agents. Particularly, the invention provides an in vitro chemoresponse assay for predicting a patient's response to an EGFR inhibitor, such as an EGFR tyrosine kinase inhibitor or a molecule targeting the extracellular domain of EGFR. The method generally comprises culturing malignant cells from a patient's specimen (e.g., biopsy specimen), contacting the cultured cells with an EGFR inhibitor that is a candidate treatment for the patient, and evaluating the cultured cells for a response to the drug. In certain embodiments, monolayer(s) of malignant cells are cultured from explants prepared by mincing tumor tissue, and the cells of the monolayer are suspended and plated for chemosenstivity testing. The in vitro response to the drug as determined by the method of the invention is correlative with the patient's in vivo response upon receiving the EGFR inhibitor during chemotherapeutic treatment (e.g., in combination with other standardized or individualized chemotherapeutic regimen).

The invention relates to a medicament composition containing sorafenib, hepatocyte growth factor receptor (cMet) inhibitors and epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors and application thereof in preparing medicaments for treating lung cancer, colon cancer, liver cancer, kidney cancer, stomach cancer, encephaloma, sarcoma, pancreatic cancer, ovarian cancer, breast canceror prostatic cancer. The medicament composition has remarkable synergistic effect, improves the curative effect of the medicament, decreases the administration dosage and reduces the occurrence of side effects.

The invention belongs to the technical field of gene techniques and provides a gene combination for instructing the individualized treatment by medicines such as geftinat and Tarceva, which comprises epidermal growth factor receptor (EGFR)-Exon19, EGFR-exon21, Kras-codon12/13, and Kras-codon61. In the invention, instruction on medicine allergy is given to a patient to be treated by EGFR-tyrosine kinase inhibitors (TKI) such as geftinat and Tarceva by detecting the mutation condition of the gene loci, namely the EGFR-Exon19, EGFR-exon21, Kras-codon12/13, and Kras-codon61, in the tumor tissue of the patient, so that the treatment effect is maximized and the side effect is reduced to the lowest degree.

The present invention relates to a method and assay kit for BRAF gene mutations which relates to the effect of molecule-targeting anti-tumor drug. Particularly, the present invention relates to a fluorescent quantitative PCR method and kit for detecting mutations at hotspots of BRAF gene, together with the use thereof. The present invention detects the mutations at specific sites of BRAF gene, and can predict the therapeutic efficacy of anti-EGFR tyrosine kinase inhibitors, an anti-tumor drug. Therefore, the present invention can provide a guidance to individualized treatments for cancer patients.

The present invention is directed to an efficient process for the manufacture of (E)-4-N,N-dialkylamino crotonic acid in HX salt form of formula I

wherein R¹ and R² independently denote C_1-3-alkyl groups and X⁻ denotes an acid anion, such as the chloride, bromide, tosylate, mesylate or trifluoroacetate anion, with high quality, and a process for synthesis of EGFR tyrosine kinase inhibitors with heterocyclic quinazoline, quinoline or pyrimidopyrimidine core structure, using the acid addition salt I and activated derivatives thereof as intermediates.

The invention provides an aminopyrimidine derivative as shown in a formula I, and a pharmaceutically acceptable salt, an isomer, a solvate and a pharmaceutical composition thereof. The invention also provides a preparation method of the compound as shown in the formula I. The compound can be used as an EGFR high-selectivity ligand molecule of EGFRT790M/L858R and EGFRDel19 mutation, and is used for treating related cancers mediated by EGFR kinase.

The invention relates to a compound crystal form and a preparation method thereof, in particular to a crystal form I of a deuterated osimertinib pharmaceutical salt as well as a preparation method andapplication thereof. An X-ray powder diffraction pattern of the crystal form represented by a 2theta angle has characteristic diffraction peaks at positions of 5.49 +/-0.2 degrees, 6.42 +/-0.2 degrees, 11.01 +/-0.2 degrees, 11.61 +/-0.2 degrees, 12.46 +/-0.2 degrees, 13.42 +/-0.2 degrees, 14.22 +/-0.2 degrees and 15.58 +/-0.2 degrees. The crystal form is not easy to absorb moisture, has higher solubility, better stability, better fluidity and preparation processability, and has important significance in preparation of EGFR tyrosine kinase inhibitor drugs. The invention also discloses the preparation method of the crystal form I of the deuterated osimertinib pharmaceutical salt, and the crystal form I obtained by the preparation method has higher purity and higher yield.

The present invention relates to an assay kit for quantitatively detecting k-ras gene mutations. Particularly, the present invention relates to detection method and a detection kit for K-ras gene mutations, which relates to the therapeutic efficacy of targeted molecular anti-cancer drugs. More particularly, the present invention relates to a fluorescent quantitative PCR method and kit for detecting mutations at hotspots of K-ras gene, together with the use thereof. The present invention detects the mutations at specific sites of K-ras gene, and can predict the therapeutic efficacy of anti-EGFR tyrosine kinase inhibitors. Therefore, it can provide a guidance to individualized treatments for cancer patients.

The invention relates to a method for predicting the response to the treatment with an EGFR tyrosine kinase inhibitor of a patient suffering lung cancer an carrying a mutation in the EGFR gene based on the expression levels in a sample of said patient of the BRCA1 gene wherein low BRCA1 expression levels are indicative of a positive response of a patient. This positive response is also observed in patients showing the T790M mutation in the EGFR gene which is usually associated with resistance to EGFR tyrosine kinase inhibitors.

The invention belongs to the field of medicines and relates to a new application of total glucosides of paeony as an EGFR (epidermal growth factor receptor) tyrosine kinase inhibitor. The content of paeoniflorin (C23H28O11) in the total glucosides of paeony is not less than 34.6%. Compared with the traditional EGFR tyrosine kinase inhibitor gefitinib, the total glucosides of paeony have the advantages that the total glucosides of paeony have high safety, can obviously reduce the expression quantity and activation quantity of EGFR tyrosine kinase, are low in price and have abundant resources, thereby providing a new choice for medicine development.

The invention discloses a combined preparation and an application of the combined preparation in preparing a non-small-cell lung carcinoma drug. An EGFR (Epidermal Growth Factor Receptor) tyrosine kinase inhibitor and a preparation for increasing a concentration of glutathione (GSH) in lung carcinoma cells are administered simultaneously or successively. According to the combined preparation and the application, through a systemic research, the GSH plays an important role in resisting the EGFR tyrosine kinase inhibitor to an EGFR T790M mutation non-small-cell lung carcinoma, so that drug resisting cells are sensitive to treatment of the EGFR tyrosine kinase inhibitor again by utilizing a mode of increasing the concentration of the GSH in the lung carcinoma cells; and a cell experiment and an animal experiment prove that the method is safe and effective, can effectively kill the lung carcinoma cells, and can inhibit proliferation of the lung carcinoma cells.

The invention belongs to the technical field of medicin and specifically relates to a quinolyl EGFR tyrosine kinase inhibitor containing a zinc binding group and a deuterated material, a pharmaceutically acceptable salt or stereoisomer thereof. The inhibitor is represented by a general formula (I) which is described in the specification; and in the general formula (I), R1, R2, R2', R3, R4, R5, R6, R7, W, X, L, T and n are as defined in the specification. The invention further relates to a preparation method for the inhibitor, a medicinal preparation containing the inhibitor and application of the inhibitor in preparation of drugs used for treating and/or preventing tumors.

The invention provides a compound as shown in formula (I), a stereoisomer or pharmaceutically acceptable salt thereof, and an application of the compound in preparation of a medicine for preventing or treating related diseases caused by EGFR mutation.