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. 2007 Nov;16(11):2455-8.
doi: 10.1158/1055-9965.EPI-07-0502.

Sequence variation in proprotein convertase subtilisin/kexin type 9 serine protease gene, low LDL cholesterol, and cancer incidence

Aaron R Folsom  1 , James M Peacock, Eric Boerwinkle
Affiliations

Sequence variation in proprotein convertase subtilisin/kexin type 9 serine protease gene, low LDL cholesterol, and cancer incidence

Aaron R Folsom et al. Cancer Epidemiol Biomarkers Prev. 2007 Nov.

Abstract

Some prospective epidemiologic studies have suggested that a low plasma cholesterol level may be associated with increased risk of cancer. Certain sequence variants in the proprotein convertase subtilisin/kexin type 9 serine protease gene (PCSK9) are associated with lifelong low total and LDL cholesterol. We therefore analyzed the association of PCSK9 variation with incidence of cancer between 1987 and 2000 in a prospective study (n=13,250). The frequency of the PCSK9 variants studied was 2.4% in blacks and 3.2% in whites. Neither was associated with increased cancer incidence: age- and sex-adjusted hazard ratios were 0.66 [95% confidence interval (95% CI), 0.31-1.39] in blacks and 0.77 (95% CI, 0.54-1.09) in whites. Low baseline total or LDL cholesterol levels in 1987 to 1989 were also not statistically significantly associated with incident cancer: multivariable-adjusted hazard ratios for the lowest compared with the highest quartiles of LDL cholesterol were 1.05 (95% CI, 0.78-1.40) in blacks and 1.16 (95% CI, 0.99-1.36) in whites. These data suggest that a lifelong low cholesterol concentration, as reflected by these PCSK9 variants, does not increase risk of cancer.

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