- SELECT
+SELECT
   vars.call_set_name AS sample_name,
   ref.chromosome AS chromosome,
   ref.start AS start,
   vars.var_end AS end,
   ref.reference_bases AS reference_bases,
+  vars.alternate_bases AS alternate_bases,
+  vars.is_variant_call AS is_variant_call,
 FROM (
   SELECT  
     CONCAT('chr', Chr) AS chromosome,

        end AS var_end,
        INTEGER(FLOOR(start / 5000)) AS bin,
        reference_bases,
      FROM ( FLATTEN((
        SELECT
          call.call_set_name,

          reference_bases,
          LENGTH(reference_bases) AS ref_len,
          MIN(LENGTH(alternate_bases)) WITHIN RECORD AS alt_len,
          alternate_bases,
          IF(alternate_bases IS NULL,
            FALSE,
            TRUE) AS is_variant_call,
