Excision repair cross-complementing group-1 (ERCC1) induction kinetics and polymorphism are markers of inferior outcome in patients with colorectal cancer treated with oxaliplatin.
Publication/Presentation Date
9-17-2019
Abstract
BACKGROUND: ERCC1, a component of nucleotide excision repair pathway, is known to repair DNA breaks induced by platinum drugs. We sought to ascertain if ERCC1 expression dynamics and a single nucleotide polymorphism (SNP) rs11615 are biomarkers of sensitivity to oxaliplatin therapy in patients with colorectal cancer (CRC).
METHODS: Western blot and qPCR for ERCC1 expression was performed from PBMCs isolated from patients receiving oxaliplatin-based therapy at specified timepoints. DNA was also isolated from 59 biorepository specimens for SNP analysis. Clinical benefit was determined using progression free survival (PFS) for metastatic CRC.
RESULTS: ERCC1 was induced in PBMC in response to oxaliplatin in 13/25 patients with mCRC (52%). Median PFS with ERCC1 induction was 190d compared to 237d in non-induced patients (HR 2.35, CI 1.005-5.479; p=0.0182).
CONCLUSIONS: ERCC1 was induced in a sub-population of patients undergoing oxaliplatin treatment, which was associated with poorer outcome, suggesting this could serve as a marker of oxaliplatin response. C/C or C/T genotype in
Volume
10
Issue
53
First Page
5510
Last Page
5522
ISSN
1949-2553
Published In/Presented At
Rao D, Mallick AB, Augustine T, Daroqui C, Jiffry J, Merla A, Chaudhary I, Seetharam R, Sood A, Gajavelli S, Aparo S, Rajdev L, Kaubisch A, Chuy J, Negassa A, Mariadason JM, Maitra R, Goel S. Excision repair cross-complementing group-1 (ERCC1) induction kinetics and polymorphism are markers of inferior outcome in patients with colorectal cancer treated with oxaliplatin. Oncotarget. 2019 Sep 17;10(53):5510-5522. doi: 10.18632/oncotarget.27140. PMID: 31565185; PMCID: PMC6756860.
Disciplines
Medicine and Health Sciences
PubMedID
31565185
Department(s)
Hematology-Medical Oncology Division
Document Type
Article