title: Pseudohypertriglyceridemia: two cases of probable glycerol kinase deficiency.
abstract: The National Cholesterol Educational Program Adult Treatment Panel's third report define borderline-high, high, and very high triglycerides as serum levels of 150-199 mg/dL, 200-499 mg/dL, and ≥500 mg/dL, respectively. Hypertriglyceridemia (HTG) is generally very responsive to both therapeutic lifestyle changes (TLC), and drug therapy, with niacin, omega-3 fatty acids, fibrates, and statins, each reducing levels by ~10-50%. This paper presents two cases of patients who were aggressively treated for significant HTG with little response to therapy. Although most measured triglyceride (TG) values in these patients were markedly elevated, periodic concentrations were reported as normal. When this occurs, the clinician must immediately think of the diagnosis 'pseudohypertriglyceridemia' or as it is more aptly termed 'glycerolemia' secondary to glycerol kinase deficiency (GKD).
authors.affiliation: Atherosclerosis and LDL-Apheresis Center, Kansas University Medical Center, Room B440 Mail Stop 4047, Kansas City, KS 66160, USA. jbackes@kumc.edu
authors.forename: James M
authors.initials: JM
authors.lastname: Backes
authors.forename: Thomas
authors.initials: T
authors.lastname: Dayspring
authors.forename: Thomas
authors.initials: T
authors.lastname: Mieras
authors.forename: Patrick M
authors.initials: PM
authors.lastname: Moriarty
mesh_terms: D002239:Carbohydrate Metabolism, Inborn Errors / Q000097:blood / Q000175:diagnosis*; D003937:Diagnosis, Differential; D005991:Glycerol Kinase / Q000097:blood / Q000172:deficiency / Q000187:drug effects; D006801:Humans; D015228:Hypertriglyceridemia / Q000175:diagnosis*; D000075262:Hypoadrenocorticism, Familial; D008297:Male; D008875:Middle Aged; D017211:Treatment Failure; D014280:Triglycerides / Q000097:blood
chemical_list: D014280:Triglycerides; D005991:Glycerol Kinase