PMID- 34781094 OWN - NLM STAT- MEDLINE DCOM- 20220216 LR - 20231213 IS - 2210-7762 (Print) VI - 260-261 DP - 2022 Jan TI - Utilizing next-generation sequencing to characterize a case of acute myeloid leukemia with t(4;12)(q12;p13) in the absence of ETV6/CHIC2 and ETV6/PDGFRA gene fusions. PG - 1-5 LID - S2210-7762(21)00221-0 [pii] LID - 10.1016/j.cancergen.2021.11.002 [doi] AB - The t(4;12)(q12;p13) has been rarely reported in both myeloid/lymphoid neoplasms with eosinophilia (ETV6/PDGFRA gene fusion) and acute myeloid leukemia (AML) (ETV6/CHIC2 gene fusion). The ability to accurately characterize t(4;12) is critical as myeloid neoplasms with PDGFRA rearrangements may be amenable to tyrosine kinase inhibitor (TKI) therapy. Herein, we describe a 60-year-old male with newly diagnosed AML and t(4;12)(q12;p13) by conventional chromosome studies. While the ETV6 break-apart fluorescence in situ hybridization (FISH) probe set demonstrated a balanced ETV6 gene rearrangement, the FIP1L1/CHIC2/PDGFRA tri-color and PDGFRA break-apart FISH probe sets could not resolve the ETV6 gene fusion partner. Mate-pair sequencing (MPseq), a next-generation sequencing assay, was subsequently performed and identified an ETV6 gene rearrangement (at 12p13) that involved an intergenic chromosomal region at 4q12, located between the CHIC2 and PDGFRA gene regions. Having excluded involvement by the PDGFRA gene region, the patient will not be considered for TKI therapy at any point during his medical management. The accurate characterization of structural rearrangements by NGS-based technologies, as demonstrated in this case, highlights the clinical relevance and potential impact on patient medical management of modern cytogenetic techniques. CI - Copyright (c) 2021 Elsevier Inc. All rights reserved. FAU - Koleilat, Alaa AU - Koleilat A AD - Division of Laboratory Genetics and Genomics, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA. FAU - McGarrah, Patrick W AU - McGarrah PW AD - Division of Hematology, Department of Internal Medicine, Mayo Clinic, Rochester, MN, USA. FAU - Olteanu, Horatiu AU - Olteanu H AD - Division of Hematopathology, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA. FAU - Van Dyke, Daniel L AU - Van Dyke DL AD - Division of Hematopathology, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA. FAU - Smadbeck, James B AU - Smadbeck JB AD - Center for Individualized Medicine-Biomarker Discovery, Mayo Clinic, Rochester, MN, USA. FAU - Johnson, Sarah H AU - Johnson SH AD - Center for Individualized Medicine-Biomarker Discovery, Mayo Clinic, Rochester, MN, USA. FAU - Vasmatzis, George AU - Vasmatzis G AD - Center for Individualized Medicine-Biomarker Discovery, Mayo Clinic, Rochester, MN, USA. FAU - Hoppman, Nicole L AU - Hoppman NL AD - Division of Laboratory Genetics and Genomics, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA. FAU - Xu, Xinjie AU - Xu X AD - Division of Hematopathology, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA. FAU - Ketterling, Rhett P AU - Ketterling RP AD - Division of Hematopathology, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA. FAU - Greipp, Patricia T AU - Greipp PT AD - Division of Hematopathology, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA. FAU - Baughn, Linda B AU - Baughn LB AD - Division of Hematopathology, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA. FAU - Patnaik, Mrinal S AU - Patnaik MS AD - Division of Hematology, Department of Internal Medicine, Mayo Clinic, Rochester, MN, USA. FAU - Peterson, Jess F AU - Peterson JF AD - Division of Hematopathology, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA. Electronic address: peterson.jess@mayo.edu. LA - eng PT - Case Reports PT - Journal Article DEP - 20211106 PL - United States TA - Cancer Genet JT - Cancer genetics JID - 101539150 RN - 0 (CHIC2 protein, human) RN - 0 (DNA-Binding Proteins) RN - 0 (Oncogene Proteins, Fusion) RN - 0 (Proto-Oncogene Proteins c-ets) RN - 0 (Repressor Proteins) RN - 0 (Transcription Factors) RN - EC 2.7.10.1 (Receptor, Platelet-Derived Growth Factor alpha) SB - IM MH - Chromosomes, Human, Pair 12/*genetics MH - Chromosomes, Human, Pair 4/*genetics MH - DNA-Binding Proteins/genetics MH - High-Throughput Nucleotide Sequencing MH - Humans MH - In Situ Hybridization, Fluorescence MH - Leukemia, Myeloid, Acute/*genetics MH - Male MH - Middle Aged MH - Oncogene Proteins, Fusion/*genetics MH - Proto-Oncogene Proteins c-ets/genetics MH - Receptor, Platelet-Derived Growth Factor alpha/genetics MH - Repressor Proteins/genetics MH - Sequence Analysis, DNA/*methods MH - Transcription Factors/genetics MH - Translocation, Genetic MH - ETS Translocation Variant 6 Protein OTO - NOTNLM OT - Acute myeloid leukemia (AML) OT - CHIC2 OT - ETV6 OT - Mate-pair sequencing (MPseq) OT - PDGFRA COIS- Declaration of Competing Interest AK, PWM, HO, DLV, JBS, SHJ, NLH, XX, RPK, PTG, LBB, MSP, JFP: no financial disclosures. GV: Algorithms described in this manuscript for mate-pair sequencing are licensed to WholeGenome LLC owned by GV. EDAT- 2021/11/16 06:00 MHDA- 2022/02/17 06:00 CRDT- 2021/11/15 20:19 PHST- 2021/07/26 00:00 [received] PHST- 2021/10/26 00:00 [revised] PHST- 2021/11/03 00:00 [accepted] PHST- 2021/11/16 06:00 [pubmed] PHST- 2022/02/17 06:00 [medline] PHST- 2021/11/15 20:19 [entrez] AID - S2210-7762(21)00221-0 [pii] AID - 10.1016/j.cancergen.2021.11.002 [doi] PST - ppublish SO - Cancer Genet. 2022 Jan;260-261:1-5. doi: 10.1016/j.cancergen.2021.11.002. Epub 2021 Nov 6.