PMID- 32442889 OWN - NLM STAT- MEDLINE DCOM- 20201231 LR - 20201231 IS - 2210-7762 (Print) VI - 244 DP - 2020 Jun TI - Myeloid neoplasm with a novel cryptic PDGFRB rearrangement detected by next-generation sequencing. PG - 55-59 LID - S2210-7762(20)30152-6 [pii] LID - 10.1016/j.cancergen.2020.03.002 [doi] AB - Rearrangements of PDGFRB are defining cytogenetic abnormalities seen in "Myeloid/lymphoid neoplasms with eosinophilia and rearrangement of PDGFRB" and are generally evident by common cytogenetic methods. Here we present an unique case in which karyotyping and fluorescence in situ hybridization (FISH) analysis were negative, and the PDGFRB rearrangement was detected by next-generation sequencing (NGS) analysis. The patient presented with approximately one-year history of leukocytosis including neutrophilia, eosinophilia, basophilia and granulocytic left shift. Bone marrow biopsy revealed a hypercellular marrow with panmyelosis, eosinophilia and mast cell hyperplasia. Blasts were not increased. Ancillary studies revealed a normal karyotype and absence of BCR-ABL1 fusion gene. NGS identified AFAP1L1-PDGFRB fusion, which was confirmed by polymerase chain reaction amplification followed by direct Sanger sequencing. The patient was treated with imatinib and showed normalization of peripheral blood leukocytosis, which lasted for at least six months. This case highlights that cytogenetics/FISH study alone may be insufficient to detect all PDGFRB rearrangement, which is critical for the patient's management. We suggest that molecular analysis capable of detecting fusion genes should be performed in all similar cases. CI - Copyright (c) 2020. Published by Elsevier Inc. FAU - Zimmermann, Nives AU - Zimmermann N AD - Division of Hematopathology, Department of Pathology and Laboratory Medicine, Indiana University School of Medicine, 350 W 11(th) St, Indianapolis, IN 46202, USA; Division of Allergy and Immunology, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave, and Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio 45229, USA. Electronic address: nives.zimmermann@UC.edu. FAU - Nassiri, Mehdi AU - Nassiri M AD - Division of Hematopathology, Department of Pathology and Laboratory Medicine, Indiana University School of Medicine, 350 W 11(th) St, Indianapolis, IN 46202, USA. Electronic address: mnassiri@iupui.edu. FAU - Zhou, Jiehao AU - Zhou J AD - Division of Hematopathology, Department of Pathology and Laboratory Medicine, Indiana University School of Medicine, 350 W 11(th) St, Indianapolis, IN 46202, USA. Electronic address: zhouji@iupui.edu. FAU - Miller, Adam M AU - Miller AM AD - Division of Hematopathology, Department of Pathology and Laboratory Medicine, Indiana University School of Medicine, 350 W 11(th) St, Indianapolis, IN 46202, USA. Electronic address: admmill@iupui.edu. FAU - Zhang, Shanxiang AU - Zhang S AD - Division of Hematopathology, Department of Pathology and Laboratory Medicine, Indiana University School of Medicine, 350 W 11(th) St, Indianapolis, IN 46202, USA. Electronic address: sz5@iupui.edu. LA - eng PT - Case Reports DEP - 20200503 PL - United States TA - Cancer Genet JT - Cancer genetics JID - 101539150 RN - 0 (Antineoplastic Agents) RN - 8A1O1M485B (Imatinib Mesylate) RN - EC 2.7.10.1 (PDGFRB protein, human) RN - EC 2.7.10.1 (Receptor, Platelet-Derived Growth Factor beta) SB - IM MH - Aged MH - Antineoplastic Agents/therapeutic use MH - *Gene Rearrangement MH - High-Throughput Nucleotide Sequencing/*methods MH - Humans MH - Imatinib Mesylate/therapeutic use MH - Male MH - Myeloproliferative Disorders/drug therapy/genetics/*pathology MH - Prognosis MH - Receptor, Platelet-Derived Growth Factor beta/*genetics OTO - NOTNLM OT - Cryptic rearrangement OT - Eosinophilia OT - Myeloproliferative neoplasm OT - Next-generation sequencing OT - PDGFRB rearrangement EDAT- 2020/05/23 06:00 MHDA- 2021/01/01 06:00 CRDT- 2020/05/23 06:00 PHST- 2019/06/19 00:00 [received] PHST- 2020/03/16 00:00 [revised] PHST- 2020/03/28 00:00 [accepted] PHST- 2020/05/23 06:00 [pubmed] PHST- 2021/01/01 06:00 [medline] PHST- 2020/05/23 06:00 [entrez] AID - S2210-7762(20)30152-6 [pii] AID - 10.1016/j.cancergen.2020.03.002 [doi] PST - ppublish SO - Cancer Genet. 2020 Jun;244:55-59. doi: 10.1016/j.cancergen.2020.03.002. Epub 2020 May 3.