Alternative titles and symbols : Hypertriglyceridemia, familial;
Description : Most individuals with familial hypertriglyceridemia have a hyperlipoproteinemia IV
(144600) phenotype. Relatives of affected persons (ascertained in a study of survivors
of coronary occlusion) were found to have normal cholesterol distribution and bimodal
triglyceride distribution (Goldstein et al., 1973). Hypertriglyceridemia is not completely
expressed in affected children. - Genetic Heterogeneity of Hypertriglyceridemia Hypertriglyceridemia
has many causes but, whatever its cause, there is evidence for its role as a coronary
heart disease risk factor. Hypertriglyceridemia is commonly found in individuals with
type II diabetes mellitus (125853). Several genetic bases for hypertriglyceridemia
have been identified. Familial combined hyperlipidemia (HYPLIP1; 602491) is due to
variation in the USF1 gene (191523) on chromosome 1q21-q23. Some mutations in the
ABCA1 gene (600046) caused Tangier disease (205400), whereas others caused a mild
disorder called type II familial high density lipoprotein deficiency, or hypoalphalipoproteinemia
(604091). Both disorders are associated with hypertriglyceridemia.;