PMID- 34771519 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240404 IS - 2072-6694 (Print) IS - 2072-6694 (Electronic) IS - 2072-6694 (Linking) VI - 13 IP - 21 DP - 2021 Oct 26 TI - CBFB Break-Apart FISH Testing: An Analysis of 1629 AML Cases with a Focus on Atypical Findings and Their Implications in Clinical Diagnosis and Management. LID - 10.3390/cancers13215354 [doi] LID - 5354 AB - Fluorescence in situ hybridization (FISH) is a confirmatory test to establish a diagnosis of inv(16)/t(16;16) AML. However, incidental findings and their clinical diagnostic implication have not been systemically studied. We studied 1629 CBFB FISH cases performed in our institution, 262 (16.1%), 1234 (75.7%), and 133 (8.2%) were reported as positive, normal, and abnormal, respectively. The last included CBFB copy number changes (n = 120) and atypical findings such as 3'CBFB deletion (n = 11), 5'CBFB deletion (n = 1), and 5'CBFB gain (n = 1). Correlating with CBFB-MYH11 RT-PCR results, totally 271 CBFB rearrangement cases were identified, including five with discrepancies between FISH and RT-PCR due to new partner genes (n = 3), insertion (n = 1), or rare CBFB-MYH11 variant (n = 1) and eight with 3'CBFB deletion. All cases with atypical findings and/or discrepancies presented clinical diagnostic challenges. Correlating FISH signal patterns and karyotypes, additional chromosome 16 aberrations (AC16As) show impacts on the re-definition of a complex karyotype and prognostic prediction. The CBFB rearrangement but not all AC16As will be detected by NGS-based methods. Therefore, FISH testing is currently still needed to provide a quick and straightforward confirmatory inv(16)/t(16;16) AML diagnosis and additional information related to clinical management. FAU - Yang, Richard K AU - Yang RK AUID- ORCID: 0000-0003-0433-8626 AD - Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA. FAU - Toruner, Gokce A AU - Toruner GA AUID- ORCID: 0000-0002-5305-6337 AD - Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA. FAU - Wang, Wei AU - Wang W AD - Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA. FAU - Fang, Hong AU - Fang H AD - Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA. FAU - Issa, Ghayas C AU - Issa GC AUID- ORCID: 0000-0002-4339-8683 AD - Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA. FAU - Wang, Lulu AU - Wang L AD - Department of Clinical Cancer Prevention, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA. FAU - Quesada, Andres E AU - Quesada AE AD - Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA. FAU - Thakral, Beenu AU - Thakral B AD - Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA. FAU - Patel, Keyur P AU - Patel KP AD - Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA. FAU - Peng, Guang AU - Peng G AD - Department of Clinical Cancer Prevention, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA. FAU - Liu, Shujuan AU - Liu S AD - Parkview Regional Medical Center, Allied Hospital Pathologists, Fort Wayne, IN 46845, USA. FAU - Yin, C Cameron AU - Yin CC AD - Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA. FAU - Borthakur, Gautam AU - Borthakur G AD - Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA. FAU - Tang, Zhenya AU - Tang Z AUID- ORCID: 0000-0002-8079-9945 AD - Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA. FAU - Wang, Sa A AU - Wang SA AD - Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA. FAU - Miranda, Roberto N AU - Miranda RN AD - Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA. FAU - Khoury, Joseph D AU - Khoury JD AUID- ORCID: 0000-0003-2621-3584 AD - Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA. FAU - Medeiros, L Jeffrey AU - Medeiros LJ AUID- ORCID: 0000-0001-6577-8006 AD - Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA. FAU - Tang, Guilin AU - Tang G AD - Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA. LA - eng PT - Journal Article DEP - 20211026 PL - Switzerland TA - Cancers (Basel) JT - Cancers JID - 101526829 PMC - PMC8582369 OTO - NOTNLM OT - CBFB rearrangement OT - CBFB-MYH11 OT - FISH OT - RT-PCR OT - additional chromosome16 aberrations (AC16As) OT - atypical findings OT - next-generation sequencing (NGS) COIS- The authors declare no conflict of interest. EDAT- 2021/11/14 06:00 MHDA- 2021/11/14 06:01 PMCR- 2021/10/26 CRDT- 2021/11/13 01:14 PHST- 2021/10/02 00:00 [received] PHST- 2021/10/20 00:00 [revised] PHST- 2021/10/23 00:00 [accepted] PHST- 2021/11/13 01:14 [entrez] PHST- 2021/11/14 06:00 [pubmed] PHST- 2021/11/14 06:01 [medline] PHST- 2021/10/26 00:00 [pmc-release] AID - cancers13215354 [pii] AID - cancers-13-05354 [pii] AID - 10.3390/cancers13215354 [doi] PST - epublish SO - Cancers (Basel). 2021 Oct 26;13(21):5354. doi: 10.3390/cancers13215354.