chr start stop reference nuc variant nuc depth genic status zygosity variant ID 7 142909867 142909868 T C 9 GENIC homozygous 877762199 7 142909958 142909959 G C 10 GENIC homozygous 877762200 7 142909991 142909992 T C 9 GENIC homozygous 877762201