ArticleThe pharmacogenomics journal2021
Pharmacogenetics of ATP binding cassette transporter MDR1(1236C>T) gene polymorphism with glioma patients receiving Temozolomide-based chemoradiation therapy in Indian population.
Article in The pharmacogenomics journal, 2021. 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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Who cites it
4 citing papers in PubMed, 1 synthesis or guideline pooled it, 6 citations in OpenAlex.
- ABCB1 Polymorphisms Influence on Temozolomide Resistance and Overall Survival in Glioblastoma Patients: A Systematic Review of Clinical Evidence.Journal of cellular and molecular medicine · 2026Pooled it
- Computational Analysis of MDR1 Variants Predicts Effect on Cancer Cells via their Effect on mRNA Folding.PLoS computational biology · 2024Article
- Pharmacogenetic Study of the Impact ofPharmaceutics · 2022Article
- Temozolomide-induced myelotoxicity and single nucleotide polymorphisms in the MGMT gene in patients with adult diffuse glioma: a single-institutional pharmacogenetic study.Journal of neuro-oncology · 2022Article
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7 authors at 3 institutions in 1 country.
Funding
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Abstract
Temozolomide (TMZ), an alkylating agent with a broad-spectrum antitumor activity, ability to cross blood-brain barrier (BBB), shown to be effective against malignant glioma. This study aims to investigate the effect of 1236C>T (rs1128503) single-nucleotide gene polymorphisms of ABCB1 (MDR1) in north-Indian patients diagnosed with glioma undergoing TMZ-based chemoradiotherapy. Genotyping was performed in 100 patients diagnosed with malignant glioma (50 anaplastic astrocytoma (AA) patients and 50 glioblastoma multiforme (GBM) patients) and 150 age and sex-matched controls by polymerase chain reaction-restriction fragment length polymorphisms (PCR-RFLP) method, followed by sanger sequencing. TMZ plasma levels were analyzed by reverse phase HPLC method. Glioma patient's survival time was analyzed by Kaplan-Meier's curve. Results of MDR1 gene 1236C>T polymorphism showed significant allelic and genotypic frequency association between glioma patients and controls. The plasma TMZ levels between metabolizers group in Grade III and Grade IV were found to be statistically significant (p < 0.05). The mutant genotype (TT) has less survival benefit compared with other genotypes (CT/CC) and the survival difference between AA and GBM was found to be statistically significant (p < 0.05). Though CT and TT polymorphisms have significant association with lower TMZ levels in both Grade III (AA) and IV (GBM) tumors, the survival difference seems to be mainly among patients with Grade III tumors. Our findings suggest that the MDR1 gene polymorphism plays a role in plasma TMZ levels and in survival time of glioma patients and, hence, TMZ therapy in malignant glioma can be predicted by genotyping MDR1 (1236C>T) gene polymorphism.
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