FRI101 Marked Reduction In Severe Resistant Hypertriglyceridemia On PCSK9 Inhibitor

Disclosure: S. Kaul: None. A. Gupta: None. Introduction: PCKS9 inhibitors, such as evolocumab, have been shown to lower triglyceride levels by approximately 10-20% (1). However, there have not been any reports of PCSK9 inhibitors lowering triglyceride levels by more than 100%. Clinical Case: A 35-year-old white man presented with hypertriglyceridemia for more than eight years. Past medical history was significant for recurrent pancreatitis and diabetes mellitus type 2 with recent HbA1c of 7.6% (normal range <5.7%) on metformin 1 gram BID and insulin glargine 15 units daily. He had multiple hospitalizations for pancreatitis requiring insulin drip. His triglycerides remained elevated on fenofibrate, atorvastatin, and icosapent ethyl despite alcohol avoidance and changes in diet with progressive elevation to 5000 mg/dL (normal range 0-150 mg/dL) requiring four sessions of plasmapheresis and hospitalization requiring intravenous insulin drip. His family history also included hypertriglyceridemia in his mother. He was started on evolocumab 140 mg subcutaneously every 2 weeks and noted to have drastic improvement of triglycerides down to a normal level of 138 mg/dL. On recent labs, his triglyceride level was noted to be 921 mg/dL with HbA1c at 8.0%. He did admit non-compliance to diet but did not require any more hospitalizations for pancreatitis since starting evolocumab. Conclusions: This is the first reported case of an unexplored potential of evolocumab in patients with severe hypertriglyceridemia. Reference: (1) Warden BA, Fazio S, Shapiro MD. The PCSK9 revolution: Current status, controversies, and future directions. Trends Cardiovasc Med. 2020;30(3):179-185. doi:10.1016/j.tcm.2019.05.007 Presentation: Friday, June 16, 2023