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Xuling Chang et al. study whether low frequency variants are associated with leukocyte telomere length and whether these variants predispose to incident cancers and mortalities among East Asians. They find that three East Asian specific variants at POT1, TERF1 and STN1 loci are associated with leukocyte telomere length and report a mechanistic pathway linking TERF1, leukocyte telomere length and incident colon cancer.

Shortening of leukocyte telomere length (LTL) is associated with age and increased risk for various chronic diseases. Here, the authors report genome-wide association studies for LTL in Singaporean Chinese populations and find that longer LTL associates with less severe outcomes of respiratory disease phenotypes.