Abstract: The present invention relates to a heteroaryl derivative, a stereoisomer thereof, a hydrate thereof, a solvate thereof, or a pharmaceutically acceptable salt thereof, a method for preparing the same, and a pharmaceutical composition for preventing or treating cancer comprising the same as an active ingredient. The heteroaryl derivative of the present invention exhibits high inhibitory activity against overexpressed HER2, and thus, a pharmaceutical composition containing the same as an active ingredient can be usefully used for preventing or treating HER-2 positive cancer.

Abstract: A function of cyclin-dependent kinase 12 (CDK12) as a biomarker for a human epidermal growth factor receptor 2 (HER2)-positive cancer and anti-HER2 therapy, and a use of the CDK12 are provided. The CDK12 may be used for companion diagnostics of a HER2-targeted therapeutic agent for a subject having HER2+ cancer as a prognostic factor and a predictive factor for response of the subject to the anti-HER2-targeted therapeutic agent in HER2+ cancer, or used to check the probability of expressing resistance to the HER2-targeted therapeutic agent. When the CDK12 is amplified or expressed at a level higher than a reference value, the CDK12 may be suppressed to overcome the resistance to the HER2 therapeutic agent and improve a therapeutic effect, thereby improving the therapeutic efficiency of HER2-positive cancer.

Abstract: The present invention provides MEL-18, which is a biomarker for human epidermal growth factor receptor2 (HER2)-positive cancer and anti-HER2 therapy, and a use thereof. According to the present invention, MEL-18 is a prognostic factor or predictor for a response of subjects to an anti-HER2-targeted drug in HER2-POSITIVE cancer and may be used in companion diagnostics for HER2-targeted drugs in subjects with HER2-positive cancer. Therefore, HER2-positive cancer may be more effectively treated by overcoming resistance to HER2 therapeutic agents and enhancing therapeutic efficacy by determining whether ADAM10/17 inhibitors are administered or co-administered with HER2-targeted drugs.

Abstract: The present invention provides MEL-18, which is a biomarker for human epidermal growth factor receptor2 (HER2)-positive cancer and anti-HER2 therapy, and a use thereof. According to the present invention, MEL-18 is a prognostic factor or predictor for a response of subjects to an anti-HER2-targeted drug in HER2-POSITIVE cancer and may be used in companion diagnostics for HER2-targeted drugs in subjects with HER2-positive cancer. Therefore, HER2-positive cancer may be more effectively treated by overcoming resistance to HER2 therapeutic agents and enhancing therapeutic efficacy by determining whether ADAM10/17 inhibitors are administered or co-administered with HER2-targeted drugs.

Abstract: The present invention provides MEL-18, which is a biomarker for human epidermal growth factor receptor2 (HER2)-positive cancer and anti-HER2 therapy, and a use thereof. According to the present invention, MEL-18 is a prognostic factor or predictor for a response of subjects to an anti-HER2-targeted drug in HER2-POSITIVE cancer and may be used in companion diagnostics for HER2-targeted drugs in subjects with HER2-positive cancer. Therefore, HER2-positive cancer may be more effectively treated by overcoming resistance to HER2 therapeutic agents and enhancing therapeutic efficacy by determining whether ADAM10/17 inhibitors are administered or co-administered with HER2-targeted drugs.

Abstract: A function of cyclin-dependent kinase 12 (CDK12) as a biomarker for a human epidermal growth factor receptor 2 (HER2)-positive cancer and anti-HER2 therapy, and a use of the CDK12 are provided. The CDK12 may be used for companion diagnostics of a HER2-targeted therapeutic agent for a subject having HER2+ cancer as a prognostic factor and a predictive factor for response of the subject to the anti-HER2-targeted therapeutic agent in HER2+ cancer, or used to check the probability of expressing resistance to the HER2-targeted therapeutic agent. When the CDK12 is amplified or expressed at a level higher than a reference value, the CDK12 may be suppressed to overcome the resistance to the HER2 therapeutic agent and improve a therapeutic effect, thereby improving the therapeutic efficiency of HER2-positive cancer.

Abstract: The present invention relates to a novel pyrimidine-4-carboxylic acid derivative having an anticancer activity, and the compound thereof is useful as a drug for treating and preventing tumor diseases, wherein the compound is represented by the Formula 1: or a pharmaceutically acceptable salt thereof, wherein: Q is a C6-C15 aryl group; or a C4-C13 heteroaryl group, wherein the heteroaryl contains 1, 2 or 3 heteroatoms substituted with 1-3 heteroatom(s) selected from the group consisting of nitrogen, oxygen or sulfur; R is a halogen; a C1-C10 haloalkyl substituted with 1-13 halogen atom(s); a C1-C10 alkoxy; a 5- or 6-membered heterocycloalkyl or (CH2)r-R1 wherein the heterocycloalkyl contains 1-2 heteroatom(s) selected from the group consisting of nitrogen and oxygen; R1 is a hydrogen; a C1-C10 alkoxy; amino; mono(C1-C10 alkyl)amino; di(C1-C10 alkyl)amino; or —NHC(O)-phenyl; n is 1, 2, 3, 4, 5, or 6; and r is 0, 1, 2, 3, 4, 5, or 6; and m is 0, 1, 2 or 3.

Abstract: The present invention relates to a novel pyrimidine-4-carboxylic acid derivative having an anticancer activity, and the compound of the present invention is useful as a drug for treating and preventing tumor diseases.