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Polymorphisms in the human DNA repair gene XPF
1Program in Molecular Biology, University of Southern California, Los Angeles, CA, USA. fanfan@cmgm.stanford.edu
Mutation Research
|September 10, 1999
Summary
Researchers identified six DNA sequence polymorphisms in the human XPF gene, crucial for DNA repair. These genetic variations may influence cancer susceptibility and genetic stability.
Area of Science:
- Genetics
- Molecular Biology
- Cancer Research
Background:
- The XPF gene is vital for nucleotide excision repair, a key DNA repair pathway.
- Genetic variations in DNA repair genes can impact an individual's susceptibility to diseases like cancer.
Purpose of the Study:
- To identify DNA sequence polymorphisms within the human XPF gene.
- To investigate the potential functional significance of these polymorphisms in relation to cancer susceptibility and genetic stability.
Main Methods:
- DNA sequencing of the coding region and exon-intron boundaries of the human XPF gene.
- Analysis of genetic variation in a cohort of 38 individuals.
Main Results:
- Six single nucleotide polymorphisms (SNPs) were identified in the XPF gene.
- One SNP was in the 5' non-coding region, and five were in the coding region.
- Allele frequencies for the rarer allele ranged from 0.01 to 0.38; four polymorphisms were only found in heterozygotes.
Conclusions:
- The identified XPF gene polymorphisms, particularly those altering amino acid sequences, are potential candidates for influencing cancer susceptibility.
- XPF gene sequence diversity is comparable to other well-studied genes like lipoprotein lipase and beta-globin.