Changes

   GGT            :  the reference sequence that is replaced by the alternative sequence below.

   GGT            :  the reference sequence that is replaced by the alternative sequence below.

   G              :  so this is basically a deletion of GT

   G              :  so this is basically a deletion of GT

   .              : QUAL field which is left missing.

   455            : QUAL field denoting validity of this variant, higher the better.

   TPASS          :  a temporary passed variant.

   PASS          :  a passed variant.

   INFO          :  fields containing information about the variant.

   INFO          :  fields containing information about the variant.

   FORMAT        : format field labels for the genotype columns.

   FORMAT        : format field labels for the genotype columns.