Apolipoprotein C-Ii Deficiency, also known as familial apolipoprotein c-ii deficiency, is related to familial apolipoprotein c-ii deficiency and hyperlipoproteinemia, type i. An important gene associated with Apolipoprotein C-Ii Deficiency is APOC2 (Apolipoprotein C2), and among its related pathways/superpathways are Metabolism of water-soluble vitamins and cofactors and Visual phototransduction. Affiliated tissues include smooth muscle and heart, and related phenotypes are splenomegaly and hypertriglyceridemia