Related Experiment Video
Updated: May 18, 2026

Magnetic Resonance Imaging Assessment of Carcinogen-induced Murine Bladder Tumors
Published on: March 29, 2019
N-Acetyltransferase 1 (NAT1) Genotype: A Risk Factor for Urinary Bladder Cancer in a Lebanese Population
Ibrahim A Yassine1, Loulou Kobeissi, Michel E Jabbour
1Faculty of Health Sciences, University of Balamand, Beirut 1100-2807, Lebanon.
Abstract:
In Lebanon, bladder cancer is the second most incident cancer among men. This study investigates a possible association between N-acetyltransferase 1 (NAT1) genotype, a drug-metabolizing enzyme coding gene, and bladder cancer in Lebanese men. A case-control study (54 cases and 105 hospital-based controls) was conducted in two major hospitals in Beirut. Cases were randomly selected from patients diagnosed in the period of 2002-2008. Controls were conveniently identified and selected from the same settings. Data was collected using interview questionnaire and blood analysis. NAT1 genotypes were determined by PCR-RFLP. Statistical analysis revolved around univariate, bivariate, and multivariate logistic regression models, along with checks for effect modification. Results showed NAT1(∗)14A allele, smoking, occupational exposure to combustion fumes, and prostate-related symptoms, to be risk factors for bladder cancer. The odds of carrying at least one NAT1(∗)14A allele are 7 times higher in cases compared to controls (OR = 7.86, 95% CI: 1.53-40.39). A gene-environment interaction was identified for NAT1(∗)14A allele with occupational exposure to combustion fumes. Among carriers of NAT1(∗)14A allele, the odds of bladder cancer dropped to 2.03 from 3.72. Our study suggests NAT1(∗)14A allele as a possible biomarker for bladder cancer. Further research is recommended to confirm this association.
More Related Videos
11:02Induction of Invasive Transitional Cell Bladder Carcinoma in Immune Intact Human MUC1 Transgenic Mice: A Model for Immunotherapy Development
Published on: October 30, 2013
09:34Targeted Next-generation Sequencing and Bioinformatics Pipeline to Evaluate Genetic Determinants of Constitutional Disease
Published on: April 4, 2018
Related Concept Videos
Pharmacogenetics of Phase II Enzymes: N-acetyltransferase, Thiopurine S-methyltransferase, UDP-glucuronosyltransferase
Pharmacogenetics of Drug Targets: β₂-Adrenergic Receptors, Apo E, Thymidylate Synthase
Non-LTR Retrotransposons
lncRNA - Long Non-coding RNAs
The Ras Gene
Ras is a superfamily...
Pharmacogenetics of Drug Transporters: P-Glycoprotein and Solute Carrier Transporters