In the complex genome of a case (BNGOHM-0000191) with myelodysplastic syndromes (MDS), OGM detected a 392.8 kbp tandem duplication on chr7, resulting in the duplication of KMT2C, GALNTT11, and GALNT5 (Figure 3a). Here, GALNT5 is linked to myelodysplastic syndrome.