aCGH Analysis of Predictive Biomarkers for Response to Bevacizumab plus Oxaliplatin- or Irinotecan-Based Chemotherapy in Patients with Metastatic Colorectal Cancer.

CONCLUSION: Chromosome 8q24.1-q24.2 may contain genes that could potentially serve as predictive markers for selecting either FOLFOX or FOLFIRI in combination with bevacizumab for treatment of patients with mCRC.
IMPLICATIONS FOR PRACTICE: Bevacizumab has been used as a standard first-line treatment for patients with metastatic colorectal cancer (mCRC) in combination with either oxaliplatin-based or irinotecan-based chemotherapy. Until now, there has been no predictive marker to choose between the two combination chemotherapies. This array-based comparative genomic hybridization analysis revealed that the difference in therapeutic effect between the two combination chemotherapies is prominent in patients with mCRC with gene copy number gain in chromosome 8p24.1-p24.2. Such patients showed more favorable response and survival when treated with irinotecan-based combination chemotherapy. Overlapping genes commonly found in this region may be predictive biomarkers of the efficacy of the combination chemotherapy with bevacizumab.
PMID: 30425180 [PubMed - as supplied by publisher]

Source: The Oncologist - November 13, 2018 Category: Cancer & Oncology Authors: Fujita Y, Taguri M, Yamazaki K, Tsurutani J, Sakai K, Tsushima T, Nagase M, Tamagawa H, Ueda S, Tamura T, Tsuji Y, Murata K, Taira K, Denda T, Moriwaki T, Funai S, Nakajima TE, Muro K, Tsuji A, Yoshida M, Suyama K, Kurimoto T, Sugimoto N, Baba E, Seki N, Tags: Oncologist Source Type: research