chr start stop reference nuc variant nuc depth genic status zygosity variant ID 20 29424846 29424847 T - 2 GENIC heterozygous 45701429 20 29426796 29426797 C CA 1 GENIC homozygous 45508975 20 29447425 29447427 TT -- 1 GENIC homozygous 45508996