Abstract: The present invention relates to a 6-(isooxazolidin-2-yl)-N-phenylpyrimidin-4-amine derivative, and a pharmaceutical composition for preventing or treating cancer comprising the compound as an effective component. The compound exhibits high inhibitory activity against an epidermal growth factor receptor (EGFR) variant, or wild-type or variants of one or more of ERBB2 and ERBB4, and thus may be usefully used in the treatment of cancers in which same are expressed. In particular, the compound exhibits excellent inhibitory activity on proliferation of lung cancer cell lines, and thus can be usefully used in the treatment of lung cancer.

Abstract: One aspect of the present disclosure is a pharmaceutical composition which includes (R)—N-[1-(3,5-difluoro-4-methansulfonylamino-phenyl)-ethyl]-3-(2-propyl-6-trifluoromethyl-pyridin-3-yl)-acrylamide as a first component and a cellulosic polymer as a second component, wherein the composition of one aspect of the present disclosure has a formulation characteristic in which crystal formation is delayed for a long time.

Abstract: The present invention relates to a biomarker for gastric cancer, CST1 (cysteine proteinase inhibitor, type 2 family), DCC1 (Defective in sister chromatid cohesion homolog 1), IFITM1 (interferon induced transmembrane protein 1) or MELK (maternal embryonic leucine zipper kinase). More particularly, the present invention relates to a diagnostic composition for gastric cancer comprising an agent measuring the expression level of CST1, DCC1, IFITM1 or MELK, a kit comprising the composition, a method for detecting the marker, and a method for screening a therapeutic agent for gastric cancer using the marker.

Abstract: The present invention provides a recombinant peptide vector comprising a leader peptide, linker DNAs and a DNA construct formed by operably linking expression control sequences with a therapeutic gene encoding a fusion protein where the extracellular domain of CTLA4 is bound to the Fc fragment of immunoglobulin, wherein the leader peptide is linked to both ends of the DNA construct by the linker DNAs. Also, the present invention provides a method for preparing the recombinant peptide vector, and a pharmaceutical composition for the treatment of autoimmune diseases, which comprises a pharmaceutically effective amount of the recombinant peptide vector, and a pharmaceutically acceptable carrier.