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Insulin-like growth factor (IGF)-I has cancer promoting activities. However, the hypothesis that circulating IGF-I concentration is related to risk of lymphoma overall or its subtypes has not been examined prospectively. IGF-I concentration was measured in pre-diagnostic plasma samples from a nested case-control study of 1,072 cases of lymphoid malignancies and 1,072 individually matched controls from the European Prospective Investigation into Cancer and Nutrition. Odds ratios (ORs) and confidence intervals (CIs) for lymphoma were calculated using conditional logistic regression. IGF-I concentration was not associated with overall lymphoma risk (multivariable-adjusted OR for highest versus lowest third = 0.77 [95% CI = 0.57-1.03], ptrend  = 0.06). There was no statistical evidence of heterogeneity in this association with IGF-I by sex, age at blood collection, time between blood collection and diagnosis, age at diagnosis, or body mass index (pheterogeneity for all  ≥ 0.05). There were no associations between IGF-I concentration and risk for specific BCL subtypes, T-cell lymphoma or Hodgkin lymphoma, although number of cases were small. In this European population, IGF-I concentration was not associated with risk of overall lymphoma. This study provides the first prospective evidence on circulating IGF-I concentrations and risk of lymphoma. Further prospective data are required to examine associations of IGF-I concentrations with lymphoma subtypes.

Original publication

DOI

10.1002/ijc.30528

Type

Journal article

Journal

Int J Cancer

Publication Date

01/03/2017

Volume

140

Pages

1111 - 1118

Keywords

EPIC cohort, IGF-I, lymphoma, nested case-control, non-Hodgkin lymphoma, plasma, prospective, Adult, Aged, Aged, 80 and over, Case-Control Studies, Europe, Female, Follow-Up Studies, Humans, Insulin-Like Growth Factor I, Lymphoma, Male, Middle Aged, Nutrition Surveys, Odds Ratio, Risk, Risk Factors, Socioeconomic Factors