ERX9291698 E-MTAB-11760:Sample 2-ALL_DX_p ERP137693 PRJEB52940 STAG1 Mutations in Genetic Predisposition to Childhood hematological malignancies ERS12019259 SAMEA14414251 Sample 2-ALL_DX_p Targeted-Capture GENOMIC Hybrid Selection Mononuclear cell by ficoll density purification of Bone Marrow samples DNA was extracted from cell pellets using the Promega kit Wizard® SV Genomic DNA Purification Systems. For library preparation we used the Illumina Nextera Flex for Enrichment protocol using IDT probes (custom panel 39 genes) NextSeq 550 Experimental Factor: disease childhood B acute lymphoblastic leukemia ERX9291697 E-MTAB-11760:Sample 1-MDS_p ERP137693 PRJEB52940 STAG1 Mutations in Genetic Predisposition to Childhood hematological malignancies ERS12019258 SAMEA14414250 Sample 1-MDS_p Targeted-Capture GENOMIC Hybrid Selection Mononuclear cell by ficoll density purification of Bone Marrow samples DNA was extracted from cell pellets using the Promega kit Wizard® SV Genomic DNA Purification Systems. For library preparation we used the Illumina Nextera Flex for Enrichment protocol using IDT probes (custom panel 39 genes) NextSeq 550 Experimental Factor: disease myelodysplastic/myeloproliferative disease ERX9291699 E-MTAB-11760:Sample 3-ALL_REM_p ERP137693 PRJEB52940 STAG1 Mutations in Genetic Predisposition to Childhood hematological malignancies ERS12019260 SAMEA14414252 Sample 3-ALL_REM_p Targeted-Capture GENOMIC Hybrid Selection Mononuclear cell by ficoll density purification of Bone Marrow samples DNA was extracted from cell pellets using the Promega kit Wizard® SV Genomic DNA Purification Systems. For library preparation we used the Illumina Nextera Flex for Enrichment protocol using IDT probes (custom panel 39 genes) NextSeq 550 Experimental Factor: disease childhood B acute lymphoblastic leukemia