title: Utility of gene promoter methylation in prediction of response to platinum-based chemotherapy in epithelial ovarian cancer (EOC).
abstract: The aim was to determine whether promoter methylation of BRCA1, MGMT, MLH1, RASSF1A, and p16 genes could predict response to platinum-based chemotherapy. Thirty-five subjects with epithelial ovarian cancer (EOC) treated by platinum-based chemotherapy were recruited. Methylation-specific polymerase chain reaction was carried out and the methylation index (MI) was also derived. Response to platinum-based chemotherapy was documented clinically, radiologically, and by serial CA125 levels. Methylated BRCA1 (p = .037) and a higher MI (p = .045) were associated with primary chemosensitivity. A better outcome was predicted by a higher MI (p = .032). In EOC, BRCA1 gene promoter methylation is useful in the prediction of response to chemotherapy.
authors: Departments of Radiotherapy, Postgraduate Institute of Medical Education and Research, Chandigarh, India.
authors: Parvesh
authors: P
authors: Chaudhry
authors: Radhika
authors: R
authors: Srinivasan
authors: Firuza D
authors: FD
authors: Patel
mesh_terms: D048868:Adaptor Proteins, Signal Transducing / Q000235:genetics; D000328:Adult; D000970:Antineoplastic Agents / Q000627:therapeutic use*; D019313:BRCA1 Protein / Q000235:genetics*; D018394:CA-125 Antigen / Q000097:blood; D002945:Cisplatin / Q000627:therapeutic use*; D018899:CpG Islands; D019941:Cyclin-Dependent Kinase Inhibitor p16 / Q000235:genetics; D019175:DNA Methylation; D015254:DNA Modification Methylases / Q000235:genetics; D045643:DNA Repair Enzymes / Q000235:genetics; D018572:Disease-Free Survival; D005260:Female; D006801:Humans; D008875:Middle Aged; D000070957:MutL Protein Homolog 1; D009687:Nuclear Proteins / Q000235:genetics; D010051:Ovarian Neoplasms / Q000188:drug therapy* / Q000235:genetics / Q000276:immunology; D010865:Pilot Projects; D011237:Predictive Value of Tests; D011401:Promoter Regions, Genetic; D013997:Time Factors; D016896:Treatment Outcome; D025521:Tumor Suppressor Proteins / Q000235:genetics
chemical_list: D048868:Adaptor Proteins, Signal Transducing; D000970:Antineoplastic Agents; D019313:BRCA1 Protein; C492913:BRCA1 protein, human; D018394:CA-125 Antigen; D019941:Cyclin-Dependent Kinase Inhibitor p16; C501486:MLH1 protein, human; D009687:Nuclear Proteins; C411762:RASSF1 protein, human; D025521:Tumor Suppressor Proteins; D015254:DNA Modification Methylases; C515491:MGMT protein, human; D000070957:MutL Protein Homolog 1; D045643:DNA Repair Enzymes; D002945:Cisplatin