Genetic variation in platinating agent and taxane pathway genes as predictors of outcome and toxicity in advanced non-small-cell lung cancer.

Abstract

AIM:

Lung carcinoma is the most common malignancy and the leading cause of cancer deaths worldwide. Although clinical factors including age, performance status and stage influence the likelihood of benefit from and tolerability of chemotherapy, the genetic profile of individual patients may be an independent predictor of response and toxicity. The present study aimed to identify pharmacogenetic markers associated with clinical response and toxicity in patients with advanced non-small cell lung cancer (NSCLC) treated primarily with carboplatin and paclitaxel.

MATERIALS & METHODS:

Genomic DNA samples from 90 adult male patients diagnosed with stage IIIB/IV NSCLC were genotyped for SNPs in candidate genes of relevance to platinating agents and paclitaxel and analyzed for association with survival and toxicities in univariate and multivariate models.

RESULTS:

After adjusting for performance status and stage, SNPs in the drug transporters ABCB1 and ABCC1, as well as within NQO1 were associated with progression-free survival. With respect to hematological and nonhematological toxicities, SNPs in drug transporters (ABCB1 and ABCG2) were associated with thrombocytopenia, nausea and neutropenia, whereas SNPs in the DNA repair pathway genes ERCC4 and XPC were significantly associated with neutropenia and sensory neuropathy, respectively.

CONCLUSION:

Our study evaluated and identified SNPs in key candidate genes in platinating agent and taxane pathways associated with outcome and toxicity in advanced NSCLC. If validated in large prospective studies, these findings might provide opportunities to personalize therapeutic strategies.

• Authors: Jatinder Kaur Lamba, Brooke L Fridley, Taraswi M Ghosh, Qing Yu, Gaurav Mehta, Pankaj Gupta
• Journal: Pharmacogenomics (Pharmacogenomics) Vol. 15 Issue 12 Pg. 1565-74 ( 2014) ISSN: 1744-8042 [Electronic] England
• PMID: 25340731 (Publication Type: Journal Article)

Chemical References

• ABCB1 protein, human
• ATP Binding Cassette Transporter, Subfamily B
• Bridged-Ring Compounds
• DNA-Binding Proteins
• Multidrug Resistance-Associated Proteins
• Taxoids
• xeroderma pigmentosum group F protein
• XPC protein, human
• taxane
• Carboplatin
• NAD(P)H Dehydrogenase (Quinone)
• NQO1 protein, human
• Paclitaxel
• multidrug resistance-associated protein 1

Topics

• ATP Binding Cassette Transporter, Subfamily B (genetics)
• Aged
• Aged, 80 and over
• Bridged-Ring Compounds (administration & dosage, adverse effects)
• Carboplatin (administration & dosage, adverse effects)
• Carcinoma, Non-Small-Cell Lung (drug therapy, genetics, pathology)
• DNA-Binding Proteins (genetics)
• Disease-Free Survival
• Female
• Genetic Association Studies
• Humans
• Male
• Middle Aged
• Multidrug Resistance-Associated Proteins (genetics)
• NAD(P)H Dehydrogenase (Quinone) (genetics)
• Nausea (chemically induced, genetics, pathology)
• Neoplasm Staging
• Neutropenia (chemically induced, genetics, pathology)
• Paclitaxel (administration & dosage, adverse effects)
• Polymorphism, Single Nucleotide
• Taxoids (administration & dosage, adverse effects)
• Thrombocytopenia (chemically induced, genetics, pathology)