PMID- 30005852 OWN - NLM STAT- MEDLINE DCOM- 20190312 LR - 20210122 IS - 2210-7762 (Print) VI - 226-227 DP - 2018 Oct TI - SH2B3 aberrations enriched in iAMP21 B lymphoblastic leukemia. PG - 30-35 LID - S2210-7762(18)30087-5 [pii] LID - 10.1016/j.cancergen.2018.05.004 [doi] AB - Acute lymphoblastic leukemia (ALL) represents the most common childhood malignancy. Although survival for pediatric B-ALL has approached 90%, variability in outcome among and within cytogenetically defined subgroups persists. While G-banding and fluorescence in situ hybridization (FISH) have been used to characterize leukemic clones, there is added value of chromosomal microarray and next generation sequencing in screening genome-wide for copy number aberrations, copy neutral loss of heterozygosity and nucleotide variations. Evaluation of novel genetic aberrations can provide information about the biologic mechanisms of cytogenetically defined subgroups associated with poor prognosis, explain heterogeneity in patient outcome and identify novel targets for therapeutic intervention. The high risk B-ALL intrachromosomal amplification of chromosome 21, (iAMP21), subtype is characterized by amplification of a region of chromosome 21 that typically encompasses the RUNX1 gene and is associated with poor prognosis. Analysis of chromosomal microarray and FISH data revealed that deletions of SH2B3, encoding a negative regulator of multiple tyrosine kinase and cytokine signaling pathways, are enriched among leukemias harboring iAMP21. Enrichment of SH2B3 aberrations in the iAMP21 subtype may indicate that loss of SH2B3 contributes to disease progression and raises the possibility that these leukemias may be sensitive to tyrosine kinase inhibitors. CI - Copyright (c) 2018. Published by Elsevier Inc. FAU - Baughn, L B AU - Baughn LB AD - Division of Laboratory Genetics and Genomics, Department of Laboratory Medicine and Pathology, Mayo Clinic, 200 First Street SW, Rochester, MN, United States. FAU - Meredith, M M AU - Meredith MM AD - Department of Laboratory Medicine and Pathology and Masonic Cancer Center, University of Minnesota, 420 Delaware Street SE, Minneapolis, MN, United States. FAU - Oseth, L AU - Oseth L AD - Department of Laboratory Medicine and Pathology and Masonic Cancer Center, University of Minnesota, 420 Delaware Street SE, Minneapolis, MN, United States. FAU - Smolarek, T A AU - Smolarek TA AD - Division of Human Genetics, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, TCHRF 1042, Cincinnati, OH, United States. FAU - Hirsch, B AU - Hirsch B AD - Department of Laboratory Medicine and Pathology and Masonic Cancer Center, University of Minnesota, 420 Delaware Street SE, Minneapolis, MN, United States. Electronic address: hirsc003@umn.edu. LA - eng GR - P30 CA077598/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20180608 PL - United States TA - Cancer Genet JT - Cancer genetics JID - 101539150 RN - 0 (Adaptor Proteins, Signal Transducing) RN - 0 (Intracellular Signaling Peptides and Proteins) RN - 0 (Proteins) RN - 0 (SH2B3 protein, human) SB - IM MH - Adaptor Proteins, Signal Transducing MH - Adolescent MH - Adult MH - Child MH - Child, Preschool MH - Chromosome Aberrations MH - Chromosome Banding/methods MH - Chromosomes, Human, Pair 21/*genetics MH - Comparative Genomic Hybridization MH - Cytogenetics MH - Female MH - *Gene Amplification MH - High-Throughput Nucleotide Sequencing MH - Humans MH - In Situ Hybridization, Fluorescence MH - Intracellular Signaling Peptides and Proteins MH - Male MH - *Mutation MH - Precursor B-Cell Lymphoblastic Leukemia-Lymphoma/*genetics/pathology MH - Proteins/*genetics OTO - NOTNLM OT - Acute lymphoblastic leukemia OT - Chromosomal microarray OT - SH2B3 OT - iAMP21 EDAT- 2018/07/15 06:00 MHDA- 2019/03/13 06:00 CRDT- 2018/07/15 06:00 PHST- 2018/03/24 00:00 [received] PHST- 2018/05/07 00:00 [revised] PHST- 2018/05/19 00:00 [accepted] PHST- 2018/07/15 06:00 [entrez] PHST- 2018/07/15 06:00 [pubmed] PHST- 2019/03/13 06:00 [medline] AID - S2210-7762(18)30087-5 [pii] AID - 10.1016/j.cancergen.2018.05.004 [doi] PST - ppublish SO - Cancer Genet. 2018 Oct;226-227:30-35. doi: 10.1016/j.cancergen.2018.05.004. Epub 2018 Jun 8.