Abstract: An acetic acid ester compound represented by the following formula (I) or a salt thereof, wherein R represents optionally substituted deuterated lower alkyl, is disclosed.

Abstract: A method for inhibiting androgen activity, including administering an effective amount of a tetrahydropyridopyrimidine compound of formula (I) or a pharmaceutically acceptable salt thereof to a subject in need thereof, and a method for treating tumor, including administering an effective amount of a tetrahydropyridopyrimidine compound of formula (I) or a pharmaceutically acceptable salt thereof to a subject in need thereof

Abstract: An object to be solved by the present invention is to identify patients resistant to known HSP90 inhibitors, and to provide a novel therapeutic agent for treating the patients who have become resistant to known HSP90 inhibitors. As a means for solving the above problems, the present invention provides identification of the patients based on a protein, which is an HSP90 family protein having a mutation in the site corresponding to F138 of HSP90? class A consisting of the amino acid sequence of SEQ ID NO: 1, and use of a substance that inhibits the protein as an active ingredient of a therapeutic agent.

Abstract: To provide a compound having an inhibitory activity for an androgen receptor. A tetrahydropyridopyrimidine compound represented by the following general formula (I) or a pharmaceutically acceptable thereof (in the formula, X and R are as defined in the specification).

Abstract: This invention provides a cancer antigen peptide that can be administered to a wide range of cancer patients in the form of a peptide vaccine for cancer without the need for HLA typing and regardless of the HLA types of patients. Such peptide having 4 linked CTL epitopes is obtained by linking 4 CTL epitope peptides selected from among CTL epitope peptides derived from tumor antigen molecules that are reported to have the capacity for CTL induction via linkers.

Abstract: This invention provides an HLA class I-expressing non-human animal that can be prepared efficiently in a simple manner within a short period of time, in which the transgene copy number to be introduced thereinto and the integration site of transgene are regulated, and in which the expression level of the transgene and the site of expression thereof are regulated. The invention also provides a method for preparing such non-human animal. In such HLA class I gene knock-in non-human animal, an artificial chimeric gene encoding an artificial chimeric protein comprising a protein composed of ?2 microglobulin, HLA class I ?1 and ?2 regions, and an MHC class I ?3 region of a non-human animal ligated in such order from the N terminus is expressed under the control of a transcription regulatory region of ?2 microglobulin gene of the non-human animal.

Abstract: A novel compound which has an excellent aurora A-selective inhibitory action and is useful as an orally administrable anticancer agent is provided. Also, a novel agent for potentiation of anti-tumor effect of microtubule agonists, which include a taxane anticancer agent, and a combination therapy are provided.

Abstract: Provided is a novel method for treating cancer using an HSP90 inhibitor which exhibits a markedly superior antitumor effect and has a reduced side effect. An antitumor agent is characterized in that an azabicyclo compound of the following Formula (1) or a salt thereof is administered in combination with other antitumor agent(s).

Abstract: An object to be achieved by the present invention is to provide a novel compound having EGFR inhibitory effects and cell growth inhibitory effects, as well as a medication useful for the prevention and/or treatment of cancer based on the EGFR inhibitory effects. The present invention provides a compound represented by Formula (I) below, or a salt thereof.

Abstract: Provided is a novel method for treating a cancer using an FTD/TPI combination drug, which shows remarkably excellent antitumor effect and small adverse effects. An antitumor agent, in which a combination drug containing trifluridine and tipiracil hydrochloride at a molar ratio of 1:0.5 and an anti-VEGF antibody or anti-EGFR antibody are administered in combination.

Abstract: The problem to be solved by the present invention is to provide a potent and highly selective novel FGFR inhibitor, and an antitumor agent having reduced side effects, such as increased blood phosphorus levels, while maintaining the antitumor effect of the FGFR inhibitor. The present invention provides an antitumor agent comprising a 3,5-disubstituted benzene alkynyl compound represented by Formula (I) or a salt thereof that is used so that the 3,5-disubstituted benzene alkynyl compound or a salt thereof is administered on an administration schedule of at least twice a week and a dosing interval of at least one day.

Abstract: An antitumor effect potentiator for potentiating one or more other antitumor agents, comprising, as an active ingredient, an imidazooxazine compound represented by Formula (I), or a pharmaceutically acceptable salt thereof, wherein A, B, C, and D represent C—R1a, C—R1b, C—R1c, and C—R1d, respectively, or one or two of A, B, C, and D represent an N atom; at least two of R1a, R1b, R1c, and R1d represent hydrogen, and the other(s) represent(s) halogen; cyano; C1-6 alkyl that may have hydroxyl group(s) as substituent(s); C1-6 alkoxy; carbonyl having, as a substituent, hydroxyl, amino, optionally substituted mono- or di-(C1-6 alkyl)amino, or mono- or di-(C1-6 alkoxy)amino; or an unsaturated heterocyclic group; R2 represents phenyl, pyridyl, or thienyl; R3 represents hydrogen, methyl, ethyl, or cyclopropyl; and R4 represents hydrogen or hydroxy.

Abstract: This invention provides a method for predicting a therapeutic effect of chemotherapy that uses an antitumor agent comprising ?,?,?-trifluorothymidine and 5-chloro-6-(1-(2-iminopyrrolidinyl)methyl)uracil hydrochloride at a molar ratio of 1:0.5 on a colorectal cancer patient, the method comprising: (1) detecting the presence or absence of KRAS gene mutation in a biological sample obtained from the patient; and (2) predicting that the patient is likely to sufficiently respond to the chemotherapy, when KRAS gene mutation is detected in Step (1).

Abstract: An oral particulate antitumor preparation, which allows safe intake of antitumor agents, handling of which could be in many cases dangerous due to their high. pharmacological activity, and has a stability equivalent to that of capsules or tablets, is provided. An oral particulate antitumor preparation, in which a particulate composition containing an antitumor agent is coated with a saccharide other than a cellulose derivative.

Abstract: An objective of the present invention is to obtain a stable crystal form of 5-chloro-6-(2-iminopyrrolidin-1-yl)methyl-2,4(1H,3H)-pyrimidinedione hydrochloride. The present invention provides a crystal of 5-chloro-6-(2-iminopyrrolidin-1-yl)methyl-2,4(1H,3H)-pyrimidinedione hydrochloride exhibiting characteristic peaks at angles of 11.6°, 17.2°, 17.8°, 23.3°, 27.1°, and 29.3° as a diffraction angle (2?±0.1°) in powder X-ray diffraction.

Abstract: A novel compound which has an excellent aurora A-selective inhibitory action and is useful as an orally administrable anticancer agent is provided. Also, a novel agent for potentiation of anti-tumor effect of microtubule agonists, which include a taxane anticancer agent, and a combination therapy are provided.

Abstract: A method for predicting a therapeutic effect of chemotherapy with a combination drug containing tegafur, gimeracil, and oteracil potassium in a gastric cancer patient by: (1) measuring an expression level of epidermal growth factor receptor (EGFR) in a biological sample obtained from the patient; (2) comparing the expression level of EGFR obtained in step (1) with a corresponding predetermined cut-off point; and (3) predicting that the patient is likely to sufficiently respond to chemotherapy when a tegafur, gimeracil, and oteracil potassium combination drug is used with an EGFR inhibitor, when the step (2) comparison reveals that the expression level of EGFR is greater than the cut-off point, or predicting that the patient is likely to sufficiently respond to chemotherapy when a tegafur, gimeracil, and oteracil potassium combination drug is used alone, when the step (2) comparison reveals that the expression level of EGFR is not greater than the cut-off point.

Abstract: The problem to be solved by the present invention is to provide an anticancer agent for treating tumors resistant to other antitumor agents that inhibit FGFR, and a method for treating such tumors. The present invention provides an antitumor agent for administration to a tumor patient resistant to an FGFR inhibitor, the antitumor agent comprising a 3,5-disubstituted benzene alkynyl compound represented by Formula (I) below or a salt thereof. The present invention also provides a therapeutic method using the anticancer agent.

Abstract: A benzilic acid ester compound represented by the following formula (I) or a salt thereof, wherein R represents optionally substituted fluorinated lower alkyl, is disclosed.

Abstract: Provided is a novel compound having BTK inhibitory action and a cell proliferation suppressing effect. Also provided is a medicine useful for the prevention and/or treatment of a disease associated with BTK, particularly cancer, based on BTK inhibitory action. A compound represented by formula (I) [wherein R1 to R3, W, A, Y and Z respectively have the meanings as defined in the specification], or a salt thereof is disclosed.