ArticleJournal of cancer research and clinical oncology2012
Predictive value of ABCB1 polymorphisms G2677T/A, C3435T, and their haplotype in small cell lung cancer patients treated with chemotherapy.
Article in Journal of cancer research and clinical oncology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers, 1 of them a synthesis that pooled it.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
4 citing papers in PubMed, 1 synthesis or guideline pooled it, 9 citations in OpenAlex.
- Associations between genetic polymorphisms of membrane transporter genes and prognosis after chemotherapy: meta-analysis and finding from Seoul Breast Cancer Study (SEBCS).The pharmacogenomics journal · 2018Pooled it
- Computational Analysis of MDR1 Variants Predicts Effect on Cancer Cells via their Effect on mRNA Folding.PLoS computational biology · 2024Article
- The Interaction between Four Polymorphisms and Haplotype ofJournal of oncology · 2023Article
- Lung cancer stem cells: a biological and clinical perspective.Cellular oncology (Dordrecht, Netherlands) · 2013Review
Corrections and comments
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Authors and funding
7 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeMultiple drug resistance limits the efficacy of numerous cytotoxic drugs used in the treatment of small cell lung cancer (SCLC). The drug efflux protein ATP-binding cassette transporter B1 (ABCB1) has an important role in this process, and its gene variability may affect chemotherapy outcomes. PATIENTS AND
methodsThis study aimed to evaluate the associations between ABCB1 polymorphisms G2677T/A, C3435T, and their haplotype with progression-free survival (PFS) and overall survival (OS) in 177 SCLC patients treated with cisplatin-etoposide or cyclophosphamide-epirubicin-vincristine chemotherapy. To determine the ABCB1 genotype, allelic specific TaqMan(®) probes were used in a RT-PCR .
resultsPatients carrying the G2677T/A TT + TA + AA genotypes (24 %) or the C3435T CT + TT genotypes (72 %) or the 2677T/A-3435T haplotype (40 %) had a longer PFS (Cox regression, P = 0.052, 0.037 and 0.037, respectively); these associations persisted also in multivariate analyses (Cox regression, P = 0.028, 0.037 and 0.030, respectively). Moreover, patients with the C3435T CT + TT genotypes had a longer OS both in univariate and multivariate analysis (Cox regression, P = 0.022 and 0.028, respectively). A trend toward longer OS was noted for the 2677T/A-3435T haplotype (Cox regression, P = 0.051), but its independent value was not confirmed (Cox regression, P = 0.071).
conclusionsOur study reported a possible predictive value of ABCB1 polymorphisms G2677T/A, C3435T, and their haplotype for longer PFS and OS in Caucasian SCLC patients treated with chemotherapy. However, to be implemented into routine clinical practice, ABCB1 polymorphisms require further validation.
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