PMID- 35167894 OWN - NLM STAT- MEDLINE DCOM- 20220427 LR - 20220531 IS - 1532-8392 (Electronic) IS - 0046-8177 (Linking) VI - 123 DP - 2022 May TI - Distinct pathologic feature of myeloid neoplasm with t(v;11p15); NUP98 rearrangement. PG - 11-19 LID - S0046-8177(22)00032-6 [pii] LID - 10.1016/j.humpath.2022.02.004 [doi] AB - Chromosome rearrangements involving NUP98 at 11p15 are rare but recurring abnormalities in acute myeloid leukemia (AML). Here we described 12 cases of myeloid neoplasms with t(v; 11p15); NUP98 rearrangement and characterized their pathologic features. Our patient cohort included 10 adults and 2 children with a median age of 51 years. They were predominantly AML (n = 10) including de novo AML, therapy-related AML, chronic myeloid leukemia with myeloid blast crisis, and mixed phenotype acute leukemia, as well as therapy-related myelodysplastic syndrome (MDS) and MDS/myeloproliferative neoplasm with increased blasts. The blasts shared some common features including pink/red cytoplasmic granules, presence of a perinuclear hof, Auer rods, and occasional bilobed nuclei, mimicking acute promyelocytic leukemia (APML). Flow cytometric studies showed blasts positive for MPO, CD117, CD13 and CD33, with a subset of cases negative for CD34 and/or HLA-DR and a subset of cases expressing monocytic markers. The translocations of 11p15 included t(7; 11) (p15; p15), t(2; 11) (q31; p15), t(9; 11) (p22; p15), t(5; 11) (q32; p15), and t(11; 12) (p15; q13). Three cases showed cryptic NUP98 rearrangement. These patients showed incomplete response to therapy with median overall survival of 17.5 months, a complete remission rate of 25% following chemotherapy induction and primary refractory disease of 58%. It is clinically important to recognize this group of diseases because the blasts can be misclassified as promyelocytes, and NUP98 rearrangement may be cryptic requiring fluorescence in situ hybridization (FISH) study. This case series highlights that NUP98-rearranged myeloid neoplasms are clinically, morphologically, and cytogenetically distinct and could be considered as a separate entity in the WHO classification defined by cytogenetic abnormality. CI - Copyright (c) 2022 Elsevier Inc. All rights reserved. FAU - Lauw, Marietya I S AU - Lauw MIS AD - Department of Pathology and Laboratory Medicine, University of California, San Francisco, CA, 94143, USA. FAU - Qi, Zhongxia AU - Qi Z AD - Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA, 94143, USA. FAU - Eversmeyer, Lauren AU - Eversmeyer L AD - Department of Pathology and Laboratory Medicine, University of California, San Francisco, CA, 94143, USA. FAU - Prakash, Sonam AU - Prakash S AD - Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA, 94143, USA. FAU - Wen, Kwun Wah AU - Wen KW AD - Department of Pathology and Laboratory Medicine, University of California, San Francisco, CA, 94143, USA. FAU - Yu, Jingwei AU - Yu J AD - Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA, 94143, USA. FAU - Monaghan, Sara A AU - Monaghan SA AD - Department of Pathology, University of Pittsburgh, School of Medicine, Pittsburgh, PA, 15213, USA. FAU - Aggarwal, Nidhi AU - Aggarwal N AD - Department of Pathology, University of Pittsburgh, School of Medicine, Pittsburgh, PA, 15213, USA. FAU - Wang, Linlin AU - Wang L AD - Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA, 94143, USA. Electronic address: Linlin.Wang@ucsf.edu. LA - eng PT - Journal Article DEP - 20220212 PL - United States TA - Hum Pathol JT - Human pathology JID - 9421547 RN - 0 (Nuclear Pore Complex Proteins) RN - 0 (Nup98 protein, human) RN - 0 (nuclear pore complex protein 98) SB - IM MH - Chromosome Aberrations MH - Humans MH - In Situ Hybridization, Fluorescence MH - *Leukemia, Myeloid, Acute/genetics MH - Middle Aged MH - *Myeloproliferative Disorders/genetics MH - Nuclear Pore Complex Proteins/genetics MH - Translocation, Genetic OTO - NOTNLM OT - Morphology OT - Myeloid neoplasm OT - NUP98 FISH OT - NUP98 rearrangement OT - t(v;11p15) EDAT- 2022/02/16 06:00 MHDA- 2022/04/28 06:00 CRDT- 2022/02/15 20:12 PHST- 2021/11/23 00:00 [received] PHST- 2022/01/30 00:00 [revised] PHST- 2022/02/07 00:00 [accepted] PHST- 2022/02/16 06:00 [pubmed] PHST- 2022/04/28 06:00 [medline] PHST- 2022/02/15 20:12 [entrez] AID - S0046-8177(22)00032-6 [pii] AID - 10.1016/j.humpath.2022.02.004 [doi] PST - ppublish SO - Hum Pathol. 2022 May;123:11-19. doi: 10.1016/j.humpath.2022.02.004. Epub 2022 Feb 12.