title: TP53 Pro47Ser and Arg72Pro polymorphisms and colorectal cancer predisposition in an ethnic Kashmiri population.
abstract: Two TP53 gene polymorphisms at codon 47 (TP53 Pro47Ser) and at codon 72 (TP53 Arg72Pro) have been associated with susceptibility to various cancers. We carried out a case-control study and examined the genotype distribution of TP53 Pro47Ser and Arg72Pro single nucleotide polymorphisms (SNPs), using a PCR-RFLP approach, to determine if these two SNPs are risk factors for colorectal cancer (CRC) development and to look for a possible correlation of these two SNPs with clinicopathological variables of CRC. We investigated the genotype distribution of these SNPs in 86 CRC cases in comparison with 160 healthy subjects in an ethnic Kashmiri population. TP53 Arg72Pro SNP genotype frequencies differed significantly (P = 0.000001) between the groups; the frequency of the Pro/Pro mutant was almost 20% in the general population. We also found significant association of the Pro/Pro mutant with tumor location, nodal status/higher tumor grade and bleeding per rectum/constipation. We conclude that Arg72Pro SNP is associated with susceptibility to developing CRC in this ethnic Kashmiri population.
authors.affiliation: Department of Immunology and Molecular Medicine Sher-I-Kashmir Institute of Medical Sciences, Soura, Srinagar, Kashmir, India.
authors.forename: A S
authors.initials: AS
authors.lastname: Sameer
authors.forename: Z A
authors.initials: ZA
authors.lastname: Shah
authors.forename: N
authors.initials: N
authors.lastname: Syeed
authors.forename: M Z
authors.initials: MZ
authors.lastname: Banday
authors.forename: S M
authors.initials: SM
authors.lastname: Bashir
authors.forename: B A
authors.initials: BA
authors.lastname: Bhat
authors.forename: M A
authors.initials: MA
authors.lastname: Siddiqi
mesh_terms: D000328:Adult; D000368:Aged; D019943:Amino Acid Substitution / Q000235:genetics*; D016022:Case-Control Studies; D015179:Colorectal Neoplasms / Q000235:genetics*; D003710:Demography; D005006:Ethnicity / Q000235:genetics*; D005260:Female; D005787:Gene Frequency / Q000235:genetics; D020022:Genetic Predisposition to Disease; D006801:Humans; D007194:India; D008297:Male; D008875:Middle Aged; D012150:Polymorphism, Restriction Fragment Length; D020641:Polymorphism, Single Nucleotide / Q000235:genetics*; D016159:Tumor Suppressor Protein p53 / Q000235:genetics*
chemical_list: D016159:Tumor Suppressor Protein p53