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Nomani L, Cotta CV, Hsi ED, Ferry JA, Cook JR. Extranodal Marginal Zone Lymphoma of the Central Nervous System Includes Parenchymal-Based Cases With Characteristic Features. Am J Clin Pathol 2020; 154:124-132. [PMID: 32318699 DOI: 10.1093/ajcp/aqaa032] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
OBJECTIVES To define the clinicopathologic features of extranodal marginal zone lymphoma (EMZL) of the central nervous system (CNS), including cases arising in CNS parenchyma, which have been reported only rarely. METHODS Twelve cases of CNS EMZL were identified, including 5 based in CNS parenchyma and 7 nonparenchymal cases arising in dura or choroid plexus. RESULTS Histologically, parenchymal cases were perivascular infiltrates without a dominant lymphoid mass, whereas nonparenchymal cases were masses of small lymphocytes. Plasma cells were a larger component of the infiltrate in parenchymal cases (median, 30%; range, 20%-50%) than nonparenchymal cases (median, 0%; range, 0%-5%; P < .001), and plasma cells were clonal by immunohistochemistry in 4 of 5 parenchymal vs 1 of 7 nonparenchymal cases (P = .07). Fluorescence in situ hybridization for MALT1 rearrangement was positive in 1 of 3 parenchymal and none of 3 nonparenchymal cases. Chromosomal microarray was abnormal in 5 of 7 cases (71%), with chromosome 6/6q alterations identified in 3 cases. No patients with parenchymal disease but all 6 (100%) with nonparenchymal disease achieved complete remission. CONCLUSIONS This case series, the first to include multiple parenchymal cases, clarifies the spectrum of clinical, pathologic, and genetic findings in CNS EMZL and suggests that parenchymal-based lesions may show less favorable prognosis than dural-based disease.
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Affiliation(s)
- Laila Nomani
- Department of Laboratory Medicine, Robert J. Tomisch Pathology and Laboratory Medicine Institute, Cleveland Clinic, Cleveland, OH
| | - Claudiu V Cotta
- Department of Laboratory Medicine, Robert J. Tomisch Pathology and Laboratory Medicine Institute, Cleveland Clinic, Cleveland, OH
| | - Eric D Hsi
- Department of Laboratory Medicine, Robert J. Tomisch Pathology and Laboratory Medicine Institute, Cleveland Clinic, Cleveland, OH
| | - Judith A Ferry
- Department of Pathology, Massachusetts General Hospital, Boston
| | - James R Cook
- Department of Laboratory Medicine, Robert J. Tomisch Pathology and Laboratory Medicine Institute, Cleveland Clinic, Cleveland, OH
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Jallades L, Baseggio L, Sujobert P, Huet S, Chabane K, Callet-Bauchu E, Verney A, Hayette S, Desvignes JP, Salgado D, Levy N, Béroud C, Felman P, Berger F, Magaud JP, Genestier L, Salles G, Traverse-Glehen A. Exome sequencing identifies recurrent BCOR alterations and the absence of KLF2, TNFAIP3 and MYD88 mutations in splenic diffuse red pulp small B-cell lymphoma. Haematologica 2017; 102:1758-1766. [PMID: 28751561 PMCID: PMC5622860 DOI: 10.3324/haematol.2016.160192] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Accepted: 07/12/2017] [Indexed: 01/04/2023] Open
Abstract
Splenic diffuse red pulp lymphoma is an indolent small B-cell lymphoma recognized as a provisional entity in the World Health Organization 2008 classification. Its precise relationship to other related splenic B-cell lymphomas with frequent leukemic involvement or other lymphoproliferative disorders remains undetermined. We performed whole-exome sequencing to explore the genetic landscape of ten cases of splenic diffuse red pulp lymphoma using paired tumor and normal samples. A selection of 109 somatic mutations was then evaluated in a cohort including 42 samples of splenic diffuse red pulp lymphoma and compared to those identified in 46 samples of splenic marginal zone lymphoma and eight samples of hairy-cell leukemia. Recurrent mutations or losses in BCOR (the gene encoding the BCL6 corepressor) – frameshift (n=3), nonsense (n=2), splicing site (n=1), and copy number loss (n=4) – were identified in 10/42 samples of splenic diffuse red pulp lymphoma (24%), whereas only one frameshift mutation was identified in 46 cases of splenic marginal zone lymphoma (2%). Inversely, KLF2, TNFAIP3 and MYD88, common mutations in splenic marginal zone lymphoma, were rare (one KLF2 mutant in 42 samples; 2%) or absent (TNFAIP3 and MYD88) in splenic diffuse red pulp lymphoma. These findings define an original genetic profile of splenic diffuse red pulp lymphoma and suggest that the mechanisms of pathogenesis of this lymphoma are distinct from those of splenic marginal zone lymphoma and hairy-cell leukemia.
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Affiliation(s)
- Laurent Jallades
- Hospices Civils de Lyon, Centre Hospitalier Lyon Sud, Laboratoire d'Hématologie, Pierre-Bénite, France.,Cancer Research Center of Lyon, INSERM 1052 CNRS 5286, Team "Clinical and Experimental Models of Lymphomagenesis", Faculté de Médecine et de Maïeutique Lyon-Sud Charles Mérieux, Oulins, France
| | - Lucile Baseggio
- Hospices Civils de Lyon, Centre Hospitalier Lyon Sud, Laboratoire d'Hématologie, Pierre-Bénite, France.,Cancer Research Center of Lyon, INSERM 1052 CNRS 5286, Team "Clinical and Experimental Models of Lymphomagenesis", Faculté de Médecine et de Maïeutique Lyon-Sud Charles Mérieux, Oulins, France
| | - Pierre Sujobert
- Hospices Civils de Lyon, Centre Hospitalier Lyon Sud, Laboratoire d'Hématologie, Pierre-Bénite, France.,Cancer Research Center of Lyon, INSERM 1052 CNRS 5286, Team "Clinical and Experimental Models of Lymphomagenesis", Faculté de Médecine et de Maïeutique Lyon-Sud Charles Mérieux, Oulins, France.,Université Claude Bernard Lyon-1, Marseillee, France
| | - Sarah Huet
- Hospices Civils de Lyon, Centre Hospitalier Lyon Sud, Laboratoire d'Hématologie, Pierre-Bénite, France.,Cancer Research Center of Lyon, INSERM 1052 CNRS 5286, Team "Clinical and Experimental Models of Lymphomagenesis", Faculté de Médecine et de Maïeutique Lyon-Sud Charles Mérieux, Oulins, France.,Université Claude Bernard Lyon-1, Marseillee, France
| | - Kaddour Chabane
- Hospices Civils de Lyon, Centre Hospitalier Lyon Sud, Laboratoire d'Hématologie, Pierre-Bénite, France.,Cancer Research Center of Lyon, INSERM 1052 CNRS 5286, Team "Clinical and Experimental Models of Lymphomagenesis", Faculté de Médecine et de Maïeutique Lyon-Sud Charles Mérieux, Oulins, France
| | - Evelyne Callet-Bauchu
- Hospices Civils de Lyon, Centre Hospitalier Lyon Sud, Laboratoire d'Hématologie, Pierre-Bénite, France.,Cancer Research Center of Lyon, INSERM 1052 CNRS 5286, Team "Clinical and Experimental Models of Lymphomagenesis", Faculté de Médecine et de Maïeutique Lyon-Sud Charles Mérieux, Oulins, France.,Université Claude Bernard Lyon-1, Marseillee, France
| | - Aurélie Verney
- Cancer Research Center of Lyon, INSERM 1052 CNRS 5286, Team "Clinical and Experimental Models of Lymphomagenesis", Faculté de Médecine et de Maïeutique Lyon-Sud Charles Mérieux, Oulins, France.,Université Claude Bernard Lyon-1, Marseillee, France
| | - Sandrine Hayette
- Hospices Civils de Lyon, Centre Hospitalier Lyon Sud, Laboratoire d'Hématologie, Pierre-Bénite, France.,Cancer Research Center of Lyon, INSERM 1052 CNRS 5286, Team "Clinical and Experimental Models of Lymphomagenesis", Faculté de Médecine et de Maïeutique Lyon-Sud Charles Mérieux, Oulins, France
| | - Jean-Pierre Desvignes
- Aix-Marseille Université, GMGF, 13385, Marseillee, France.,INSERM, UMR_S 910, 13385, Marseille, France
| | - David Salgado
- Aix-Marseille Université, GMGF, 13385, Marseillee, France.,INSERM, UMR_S 910, 13385, Marseille, France
| | - Nicolas Levy
- Aix-Marseille Université, GMGF, 13385, Marseillee, France.,INSERM, UMR_S 910, 13385, Marseille, France.,APHM, Hôpital TIMONE Enfants, Laboratoire de Génétique Moléculaire, 13385, Marseille, France
| | - Christophe Béroud
- Aix-Marseille Université, GMGF, 13385, Marseillee, France.,INSERM, UMR_S 910, 13385, Marseille, France.,APHM, Hôpital TIMONE Enfants, Laboratoire de Génétique Moléculaire, 13385, Marseille, France
| | - Pascale Felman
- Hospices Civils de Lyon, Centre Hospitalier Lyon Sud, Laboratoire d'Hématologie, Pierre-Bénite, France.,Cancer Research Center of Lyon, INSERM 1052 CNRS 5286, Team "Clinical and Experimental Models of Lymphomagenesis", Faculté de Médecine et de Maïeutique Lyon-Sud Charles Mérieux, Oulins, France
| | - Françoise Berger
- Cancer Research Center of Lyon, INSERM 1052 CNRS 5286, Team "Clinical and Experimental Models of Lymphomagenesis", Faculté de Médecine et de Maïeutique Lyon-Sud Charles Mérieux, Oulins, France.,Université Claude Bernard Lyon-1, Marseillee, France.,Hospices Civils de Lyon, Centre Hospitalier Lyon Sud, Laboratoire d'Anatomie Pathologique, Pierre-Bénite, France
| | - Jean-Pierre Magaud
- Hospices Civils de Lyon, Centre Hospitalier Lyon Sud, Laboratoire d'Hématologie, Pierre-Bénite, France.,Cancer Research Center of Lyon, INSERM 1052 CNRS 5286, Team "Clinical and Experimental Models of Lymphomagenesis", Faculté de Médecine et de Maïeutique Lyon-Sud Charles Mérieux, Oulins, France.,Université Claude Bernard Lyon-1, Marseillee, France
| | - Laurent Genestier
- Cancer Research Center of Lyon, INSERM 1052 CNRS 5286, Team "Clinical and Experimental Models of Lymphomagenesis", Faculté de Médecine et de Maïeutique Lyon-Sud Charles Mérieux, Oulins, France
| | - Gilles Salles
- Cancer Research Center of Lyon, INSERM 1052 CNRS 5286, Team "Clinical and Experimental Models of Lymphomagenesis", Faculté de Médecine et de Maïeutique Lyon-Sud Charles Mérieux, Oulins, France .,Université Claude Bernard Lyon-1, Marseillee, France.,Hospices Civils de Lyon, Centre Hospitalier Lyon Sud, Service d'Hématologie, Pierre-Bénite, France
| | - Alexandra Traverse-Glehen
- Cancer Research Center of Lyon, INSERM 1052 CNRS 5286, Team "Clinical and Experimental Models of Lymphomagenesis", Faculté de Médecine et de Maïeutique Lyon-Sud Charles Mérieux, Oulins, France.,Université Claude Bernard Lyon-1, Marseillee, France.,Hospices Civils de Lyon, Centre Hospitalier Lyon Sud, Laboratoire d'Anatomie Pathologique, Pierre-Bénite, France
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