The lead SNP was rs4012172 ( documentclass{aastex}usepackage{amsbsy}usepackage{amsfonts}usepackage{amssymb}usepackage{bm}usepackage{mathrsfs}usepackage{pifont}usepackage{stmaryrd}usepackage{textcomp}usepackage{portland, xspace}usepackage{amsmath, amsxtra}usepackage{upgreek}pagestyle{empty}DeclareMathSizes{10}{9}{7}{6}egin{document} $$p = 1.29 imes {10^{ - 10}}$$ end{document} ), which explained 3.19% of the variance in Tg levels.