Abstract:
:The mannose-6-phosphate/insulin-like growth factor 2 receptor (M6P/IGF2R) encodes a protein that plays a critical role in tumor suppression, in part by modulating bioavailability of a potent mitogen, insulin-like growth factor-2 (IGF2). We tested the hypothesis that the common nonsynonymous genetic variants in M6P/IGF2R c.901C > G (Leu > Val) in exon 6 and c.5002G > A (Gly > Arg) in exon 34 are associated with risk of esophageal and gastric cancers. Study participants in this population-based study comprise 197 controls and 182 cases, including 105 with esophageal-gastric cardia adenocarcinoma (EGA), 57 with noncardia gastric adenocarcinoma and 20 with esophageal squamous (ES) cell carcinoma. Among white males, odds ratios (ORs) were elevated in relation to carrying at least 1 c.901C > G allele for EGA [OR = 1.9; 95% confidence intervals (CIs) = 1.0-3.6] and noncardia gastric cancer (OR = 2.5; 95% CI = 1.2-5.5), but not ES. Exploratory subgroup analyses suggested that associations between EGA and this variant were stronger among irregular or nonusers of nonsteroidal anti-inflammatory drugs (NSAIDs) (OR = 2.3; 95% CI = 1.2-4.2) and cigarette smokers (OR = 2.1; 95% CI = 1.0-4.2). An association between carrying the c.5002G > A genotype and EGA was not evident. These findings suggest that nonsynonymous polymorphisms in M6P/IGF2R may contribute to the risks of EGA and noncardia adenocarcinomas. Larger studies are required to confirm these findings.
journal_name
Int J Cancerjournal_title
International journal of cancerauthors
Hoyo C,Schildkraut JM,Murphy SK,Chow WH,Vaughan TL,Risch H,Marks JR,Jirtle RL,Calingaert B,Mayne S,Fraumeni J Jr,Gammon MDdoi
10.1002/ijc.24623subject
Has Abstractpub_date
2009-12-01 00:00:00pages
2673-8issue
11eissn
0020-7136issn
1097-0215journal_volume
125pub_type
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