Applying the haplotype inference and phasing for short tandem repeats (HipSTR)23 algorithm on 38 pairs of germline and EwS tumor WGS data covering the MYBL2-associated GGAA-microsatellite6,12, we identified additional haplotypes with 6–17 consecutive GGAA-repeats (average 13.1 GGAA-repeats). Here, MYBL2 is linked to neoplasm.