ABCB1 Genetic Variants as Predictors of Irinotecan-Induced Severe Gastrointestinal Toxicity in Metastatic Colorectal Cancer Patients

Copyright © 2020 Riera, Artigas-Baleri, Salazar, Sebio, Virgili, Arranz and Páez..

Irinotecan is widely used in the treatment of metastatic colorectal cancer (mCRC) despite its severe toxicities. Toxicity is often associated with the UGT1A1*28/*28 genotype. An explanation for idiopathic toxicity beyond the UGT1A1 biomarker, however, remains a major concern for clinicians. One of the main irinotecan transporters is P-glycoprotein (P-gp), which is a hepatic efflux pump encoded by ABCB1. P-gp is involved in the biliary excretion of irinotecan and its active metabolite SN-38. We aimed to assess whether functional variants in ABCB1 also contribute to identifying patients at risk of toxicity. A cohort of 308 mCRC patients treated with irinotecan-based regimens were genotyped for polymorphisms in ABCB1 (rs1128503, rs2032582, and rs1045642). The effect of these variants and their haplotypes on irinotecan-induced severe toxicity (diarrhea, neutropenia, asthenia, nausea, and mucositis) was assessed. After adjusting for the relevant clinical and pathological parameters in the multivariate analysis, we found rs1128503 was significantly associated with severe diarrhea and mucositis (P=0.014 and P=0.002, respectively). Additionally, rs2032582 was associated with severe mucositis (P<0.001). Our results show that rs1128503 genotyping could help to predict severe gastrointestinal toxicity induced by irinotecan.

Medienart:

E-Artikel

Erscheinungsjahr:

2020

Erschienen:

2020

Enthalten in:

Zur Gesamtaufnahme - volume:11

Enthalten in:

Frontiers in pharmacology - 11(2020) vom: 21., Seite 973

Sprache:

Englisch

Beteiligte Personen:

Riera, Pau [VerfasserIn]
Artigas-Baleri, Alícia [VerfasserIn]
Salazar, Juliana [VerfasserIn]
Sebio, Ana [VerfasserIn]
Virgili, Anna C [VerfasserIn]
Arranz, María Jesús [VerfasserIn]
Páez, David [VerfasserIn]

Links:

Volltext

Themen:

ABCB1
Biomarker
Colorectal cancer
Diarrhea
Gastrointestinal toxicity
Irinotecan (CPT-11)
Journal Article
Mucositis
P-glycoprotein

Anmerkungen:

Date Revised 28.09.2020

published: Electronic-eCollection

Citation Status PubMed-not-MEDLINE

doi:

10.3389/fphar.2020.00973

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM312711905