Fiza Javed, MD1 ∙ Robert A. Hegele, MD2 ∙ Abhimanyu Garg, MD3 ∙ Nivedita Patni, MD4 ∙ Daniel Gaudet, MD, PhD5 ∙ Lauren Williams, RDN6 ∙ Mohamed Khan, HBSc7 ∙ Qingyang Li, MSc7 ∙ Zahid Ahmad, MD8   Conclusions FCS is a rare inherited disorder characterized by severely elevated TG levels due to severe genetic compromise of intravascular LPL activity. Hypertriglyceridemia is refractory to fibrates and O3FAs, and many patients suffer from recurrent attacks of hypertriglyceridemic acute pancreatitis. Genetic testing and/or clinical algorithms distinguish FCS from MCS, which is…