PMID- 35511691 OWN - NLM STAT- MEDLINE DCOM- 20220908 LR - 20221206 IS - 1943-7722 (Electronic) IS - 0002-9173 (Linking) VI - 158 IP - 3 DP - 2022 Sep 2 TI - A Combined Biomarker of Bright CD38 and MYC >/=55% Is Highly Predictive of Double-/Triple-Hit High-Grade B-Cell Lymphoma. PG - 338-344 LID - 10.1093/ajcp/aqac047 [doi] AB - OBJECTIVES: Diagnosis of high-grade B-cell lymphoma with MYC and BCL2 or BCL6 rearrangements (double-/triple-hit lymphoma [DTHL]) appears to mandate fluorescence in situ hybridization (FISH) testing for all large B-cell lymphoma (LBCL). Given the low incidence of DTHL, we aimed to identify flow cytometry (FC) and immunohistochemistry (IHC) features of DTHL that could be used to develop an optimal screening strategy. This combined FC-IHC approach has not yet been studied. METHODS: We compared features of 40 cases of DTHL and 39 cases of diffuse LBCL (DLBCL) without MYC rearrangement. RESULTS: Bright CD38 expression (CD38bright) by FC, high MYC expression (>/=55%), and double-expressor phenotype by IHC were significantly associated with DTHL. The biomarker combining FC and IHC, CD38bright and/or MYC >/=55%, was superior to FC and IHC markers alone in predicting DTHL. Restricting FISH testing to approximately 25% of LBCL based on CD38brightand/or MYC >/=55% would detect approximately 95% of DTHL-BCL2 and approximately 75% of DHL-BCL6. CONCLUSIONS: Our study demonstrated that the novel biomarker of CD38bright and/or MYC >/=55% is highly predictive of DTHL. Awareness of the advantages and limitations of this screening strategy would facilitate development of a rational diagnostic workflow to provide high-quality patient care. CI - (c) The Author(s) 2022. Published by Oxford University Press on behalf of American Society for Clinical Pathology. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com. FAU - Alsuwaidan, Abdullah AU - Alsuwaidan A AD - Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX, USA. FAU - Koduru, Prasad AU - Koduru P AD - Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX, USA. FAU - Fuda, Franklin AU - Fuda F AD - Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX, USA. FAU - Manuel Jaso, Jesse AU - Manuel Jaso J AD - Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX, USA. FAU - Chen, Mingyi AU - Chen M AD - Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX, USA. FAU - Rosado, Flavia AU - Rosado F AD - Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX, USA. FAU - Luu, Hung S AU - Luu HS AD - Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX, USA. FAU - Sweed, Nathan AU - Sweed N AD - Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX, USA. FAU - Garcia, Rolando AU - Garcia R AD - Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX, USA. FAU - Doucet, Meggie AU - Doucet M AD - Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX, USA. FAU - Desai, Neil B AU - Desai NB AD - Department of Radiation Oncology, University of Texas Southwestern Medical Center, Dallas, TX, USA. FAU - Kumar, Kiran A AU - Kumar KA AD - Department of Radiation Oncology, University of Texas Southwestern Medical Center, Dallas, TX, USA. FAU - Awan, Farrukh T AU - Awan FT AD - Internal Medicine/Division of Hematologic Malignancies and Stem Cell Transplantation, University of Texas Southwestern Medical Center, Dallas, TX, USA. FAU - Ramakrishnan Geethakumari, Praveen AU - Ramakrishnan Geethakumari P AD - Internal Medicine/Division of Hematologic Malignancies and Stem Cell Transplantation, University of Texas Southwestern Medical Center, Dallas, TX, USA. FAU - Chen, Weina AU - Chen W AUID- ORCID: 0000-0001-5638-4371 AD - Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX, USA. LA - eng PT - Journal Article PL - England TA - Am J Clin Pathol JT - American journal of clinical pathology JID - 0370470 RN - 0 (Biomarkers, Tumor) RN - 0 (MYC protein, human) RN - 0 (Membrane Glycoproteins) RN - 0 (Proto-Oncogene Proteins c-bcl-2) RN - 0 (Proto-Oncogene Proteins c-bcl-6) RN - 0 (Proto-Oncogene Proteins c-myc) RN - EC 3.2.2.5 (CD38 protein, human) RN - EC 3.2.2.6 (ADP-ribosyl Cyclase 1) SB - IM MH - ADP-ribosyl Cyclase 1/*blood MH - Biomarkers, Tumor/genetics MH - Gene Rearrangement MH - Humans MH - In Situ Hybridization, Fluorescence MH - *Lymphoma, Large B-Cell, Diffuse/diagnosis/genetics/pathology MH - Membrane Glycoproteins/*blood MH - Proto-Oncogene Proteins c-bcl-2/genetics MH - Proto-Oncogene Proteins c-bcl-6/genetics MH - Proto-Oncogene Proteins c-myc/*blood/genetics OTO - NOTNLM OT - CD38 OT - Double-/triple-hit lymphoma OT - Flow cytometry OT - High-grade B-cell lymphoma OT - Immunohistochemistry OT - MYC EDAT- 2022/05/06 06:00 MHDA- 2022/09/09 06:00 CRDT- 2022/05/05 13:13 PHST- 2021/11/29 00:00 [received] PHST- 2022/03/24 00:00 [accepted] PHST- 2022/05/06 06:00 [pubmed] PHST- 2022/09/09 06:00 [medline] PHST- 2022/05/05 13:13 [entrez] AID - 6577222 [pii] AID - 10.1093/ajcp/aqac047 [doi] PST - ppublish SO - Am J Clin Pathol. 2022 Sep 2;158(3):338-344. doi: 10.1093/ajcp/aqac047.