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Title: A prospective study of leukocyte telomere length and risk of renal cell carcinoma.
Authors: Hofmann JN,  Lan Q,  Cawthon R,  Hosgood HD 3rd,  Shuch B,  Moore LE,  Rothman N,  Chow WH,  Purdue MP
Journal: Cancer Epidemiol Biomarkers Prev
Date: 2013 May
Branches: OEEB
PubMed ID: 23513041
PMC ID: PMC3655903
Abstract: BACKGROUND: It has been hypothesized that genomic instability related to telomere dysfunction may contribute to carcinogenesis. There is some evidence from case-control studies suggesting that short leukocyte telomere length may be associated with an increased risk of renal cell carcinoma (RCC); however, this association has not been investigated prospectively. METHODS: We conducted a nested case-control study (209 cases, 410 controls) of RCC risk in relation to prediagnostic leukocyte telomere length in the Prostate, Lung, Colorectal and Ovarian Cancer Screening Trial. ORs and 95% confidence intervals (CI) were estimated using conditional logistic regression. RESULTS: Leukocyte telomere length was not significantly associated with future risk of RCC (highest quartile vs. lowest: OR, 0.8; 95% CI, 0.5-1.5; Ptrend = 0.6). Analyses stratified by sex, age, and time from blood collection to RCC diagnosis were similarly null. CONCLUSIONS: The results of this study, to our knowledge the first prospective investigation of its kind, do not support an association between prediagnostic leukocyte telomere length and risk of RCC. IMPACT: In contrast to some earlier reports, our findings add to the evidence that leukocyte telomere length is not a biomarker of risk related to the etiology of RCC.