Background: The genetic basis of hypertriglyceridemia (HTG) is complex and includes variants in Lipase Maturation Factor 1 (LMF1), an endoplasmic reticulum (ER)-chaperone involved in the post-translational activation of lipoprotein lipase (LPL).
Objective: The objective of this study was to identify and functionally characterize biallelic LMF1 variants in patients with HTG.
Methods: Genomic DNA sequencing was used to identify biallelic LMF1 variants in HTG patients without deleterious variants in LPL, apolipoprotein C-II (APOC2), glycosylphosphatidylinositol-anchored high-density lipoprotein binding protein 1 (GPIHBP1) or apolipoprotein A-V (APOA5).