Lipid Trait Variants and the Risk of Non-Hodgkin Lymphoma Subtypes: A Mendelian Randomization Study.
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Kleinstern Geffen, Camp Nicola J, Berndt Sonja I, Birmann Brenda M, Nieters Alexandra, Bracci Paige M, McKay James D, Ghesquières Hervé, Lan Qing, Hjalgrim Henrik, Benavente Yolanda, Monnereau Alain, Wang Sophia S, Zhang Yawei, Purdue Mark P, Zeleniuch-Jacquotte Anne, Giles Graham G, Vermeulen Roel, Cocco Pierluigi, Albanes Demetrius, Teras Lauren R, Brooks-Wilson Angela R, Vajdic Claire M, Kane Eleanor, Caporaso Neil E, Smedby Karin E, Salles Gilles, Vijai Joseph, Chanock Stephen J, Skibola Christine F, Rothman Nathaniel, Slager Susan L, Cerhan James R
Аннотация
METHODS: Genome-wide association study data from the InterLymph Consortium were available for 2,661 DLBCLs, 2,179 CLLs, 2,142 FLs, 824 MZLs, and 6,221 controls. SNPs associated (P < 5 × 10-8) with high-density lipoprotein (HDL, n = 164), low-density lipoprotein (LDL, n = 137), total cholesterol (TC, n = 161), and triglycerides (TG, n = 123) were used as instrumental variables (IV), explaining 14.6%, 27.7%, 16.8%, and 12.8% of phenotypic variation, respectively. Associations between each lipid trait and NHL subtype were calculated using the MR inverse variance-weighted method, estimating odds ratios (OR) per standard deviation and 95% confidence intervals (CI).
RESULTS: HDL was positively associated with DLBCL (OR = 1.14; 95% CI, 1.00-1.30) and MZL (OR = 1.09; 95% CI, 1.01-1.18), while TG was inversely associated with MZL risk (OR = 0.90; 95% CI, 0.83-0.99), all at nominal significance (P < 0.05). A positive trend was observed for HDL with FL risk (OR = 1.08; 95% CI, 0.99-1.19; P = 0.087). No associations were noteworthy after adjusting for multiple testing.
CONCLUSIONS: We did not find evidence of a clear or strong association of these lipid traits with the most common NHL subtypes. While these IVs have been previously linked to other cancers, our findings do not support any causal associations with these NHL subtypes.
IMPACT: Our results suggest that prior reported inverse associations of lipid traits are not likely to be causal and could represent reverse causality or confounding.