APOC1 and Alzheimer disease: The \documentclass[12pt]{minimal}\usepackage{amsmath}\usepackage{wasysym}\usepackage{amsfonts}\usepackage{amssymb}\usepackage{amsbsy}\usepackage{upgreek}\usepackage{mathrsfs}\setlength{\oddsidemargin}{-69pt}\begin{document}}{}$rs4420638$\end{document} polymorphism on APOC1 can increase the accumulation of homocysteine and thus influences the risk of AD [44].