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Rengifo LY, Smits S, Boeckx N, Michaux L, Vandenberghe P, Dewaele B. Shallow whole-genome sequencing of bone marrow aspirates in myelodysplastic neoplasms: A retrospective comparison with cytogenetics. Genes Chromosomes Cancer 2023; 62:663-671. [PMID: 37293982 DOI: 10.1002/gcc.23183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 05/30/2023] [Accepted: 05/30/2023] [Indexed: 06/10/2023] Open
Abstract
Copy number alterations (CNA) are powerful prognostic markers in myelodysplastic neoplasms (MDS) and are routinely analyzed by conventional cytogenetic analysis (CCA) on bone marrow (BM). Although CCA is still the gold standard, it requires extensive hands-on time and highly trained staff for the analysis, making it a laborious technique. To reduce turn-around-time per case, shallow whole genome sequencing (sWGS) technologies offer new perspectives for the diagnostic work-up of this disorder. We compared sWGS with CCA for the detection of CNAs in 33 retrospective BM samples of patients with MDS. Using sWGS, CNAs were detected in all cases and additionally allowed the analysis of three cases for which CCA failed. The prognostic stratification (IPSS-R score) of 27 out of 30 patients was the same with both techniques. In the remaining cases, discrepancies were caused by the presence of balanced translocations escaping sWGS detection in two cases, a subclonal aberration reported with CCA that could not be confirmed by FISH or sWGS, and the presence of an isodicentric chromosome idic(17)(p11) missed by CCA. Since sWGS can almost entirely be automated, our findings indicate that sWGS is valuable in a routine setting validating it as a cost-efficient tool.
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Affiliation(s)
| | - Sanne Smits
- Center for Human Genetics, KU Leuven, Leuven, Belgium
| | - Nancy Boeckx
- Laboratory Medicine, University Hospitals Leuven, Leuven, Belgium
- Department of Oncology, KU Leuven, Leuven, Belgium
| | - Lucienne Michaux
- Center for Human Genetics, KU Leuven, Leuven, Belgium
- Center for Human Genetics, University Hospitals Leuven, Leuven, Belgium
| | - Peter Vandenberghe
- Center for Human Genetics, KU Leuven, Leuven, Belgium
- Department of Hematology, University Hospitals Leuven, Leuven, Belgium
| | - Barbara Dewaele
- Center for Human Genetics, KU Leuven, Leuven, Belgium
- Center for Human Genetics, University Hospitals Leuven, Leuven, Belgium
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De Bie J, Quessada J, Tueur G, Lefebvre C, Luquet I, Toujani S, Cuccuini W, Lafage-Pochitaloff M, Michaux L. Cytogenetics in the management of T-cell acute lymphoblastic leukemia (T-ALL): Guidelines from the Groupe Francophone de Cytogénétique Hématologique (GFCH). Curr Res Transl Med 2023; 71:103431. [PMID: 38016418 DOI: 10.1016/j.retram.2023.103431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 11/13/2023] [Accepted: 11/17/2023] [Indexed: 11/30/2023]
Abstract
Molecular analysis is the hallmark of T-cell acute lymphoblastic leukemia (T-ALL) categorization. Several T-ALL sub-groups are well recognized based on the aberrant expression of specific transcription factors. This recently resulted in the implementation of eight provisional T-ALL entities into the novel 2022 International Consensus Classification, albeit not into the updated World Health Organization classification system. Despite this extensive molecular characterization, cytogenetic analysis remains the backbone of T-ALL diagnosis in many countries as chromosome banding analysis and fluorescence in situ hybridization are relatively inexpensive techniques to obtain results of diagnostic, prognostic and therapeutic interest. Here, we provide an overview of recurrent chromosomal abnormalities detectable in T-ALL patients and propose guidelines regarding their detection. By referring in parallel to the more general molecular classification approach, we hope to offer a diagnostic framework useful in a broad clinical genetic setting.
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Affiliation(s)
- Jolien De Bie
- Center for Human Genetics, University Hospitals Leuven, Herestraat 49, Leuven 3000, Belgium
| | - Julie Quessada
- Laboratoire de Cytogénétique Hématologique, Département d'Hématologie, CHU Timone, APHM, Aix Marseille Université, Marseille 13005, France; CRCM, Inserm UMR1068, CNRS UMR7258, Aix Marseille Université U105, Institut Paoli Calmettes, Marseille 13009, France
| | - Giulia Tueur
- Laboratoire d'hématologie, Hôpital Avicenne, AP-HP, Bobigny 93000, France
| | - Christine Lefebvre
- Unité de Génétique des Hémopathies, Service d'Hématologie Biologique, CHU Grenoble Alpes, Grenoble 38000, France
| | - Isabelle Luquet
- Laboratoire d'Hématologie, CHU Toulouse (IUCT-O), Toulouse 31000, France
| | - Saloua Toujani
- Service de Cytogénétique et Biologie Cellulaire, CHU de Rennes, Rennes 35033, France
| | - Wendy Cuccuini
- Laboratoire d'Hématologie, Unité de Cytogénétique, Hôpital Saint-Louis, AP-HP, Paris 75010, France
| | - Marina Lafage-Pochitaloff
- Laboratoire de Cytogénétique Hématologique, Département d'Hématologie, CHU Timone, APHM, Aix Marseille Université, Marseille 13005, France
| | - Lucienne Michaux
- Center for Human Genetics, University Hospitals Leuven, Herestraat 49, Leuven 3000, Belgium; Katholieke Universiteit Leuven, Leuven 3000, Belgium.
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Tueur G, Quessada J, De Bie J, Cuccuini W, Toujani S, Lefebvre C, Luquet I, Michaux L, Lafage-Pochitaloff M. Cytogenetics in the management of B-cell acute lymphoblastic leukemia: Guidelines from the Groupe Francophone de Cytogénétique Hématologique (GFCH). Curr Res Transl Med 2023; 71:103434. [PMID: 38064905 DOI: 10.1016/j.retram.2023.103434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Revised: 10/20/2023] [Accepted: 11/22/2023] [Indexed: 12/26/2023]
Abstract
Cytogenetic analysis is mandatory at initial assessment of B-cell acute lymphoblastic leukemia (B-ALL) due to its diagnostic and prognostic value. Results from chromosome banding analysis and complementary FISH are taken into account in therapeutic protocols and further completed by other techniques (RT-PCR, SNP-array, MLPA, NGS, OGM). Indeed, new genomic entities have been identified by NGS, mostly RNA sequencing, such as Ph-like ALL that can benefit from targeted therapy. Here, we have attempted to establish cytogenetic guidelines by reviewing the most recent published data including the novel 5th World Health Organization and International Consensus Classifications. We also focused on newly described cytogenomic entities and indicate alternative diagnostic tools such as NGS technology, as its importance is vastly increasing in the diagnostic setting.
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Affiliation(s)
- Giulia Tueur
- Laboratoire d'hématologie, Hôpital Avicenne, AP-HP, Bobigny 93000, France
| | - Julie Quessada
- Laboratoire de Cytogénétique Hématologique, Département d'Hématologie, CHU Timone, APHM, Aix Marseille Université, Marseille 13005, France; CRCM, Inserm UMR1068, CNRS UMR7258, Aix Marseille Université U105, Institut Paoli Calmettes, Marseille 13009, France
| | - Jolien De Bie
- Center for Human Genetics, University Hospitals Leuven, Herestraat 49, Leuven 3000, Belgium
| | - Wendy Cuccuini
- Laboratoire d'Hématologie, Unité de Cytogénétique, Hôpital Saint-Louis, AP-HP, Paris 75010, France
| | - Saloua Toujani
- Service de cytogénétique et biologie cellulaire, CHU de Rennes, Rennes 35033, France
| | - Christine Lefebvre
- Unité de Génétique des Hémopathies, Service d'Hématologie Biologique, CHU Grenoble Alpes, Grenoble 38000, France
| | - Isabelle Luquet
- Laboratoire d'Hématologie, CHU Toulouse (IUCT-O), Toulouse 31000, France
| | - Lucienne Michaux
- Center for Human Genetics, University Hospitals Leuven, Herestraat 49, Leuven 3000, Belgium; Katholieke Universiteit Leuven, Leuven 3000, Belgium
| | - Marina Lafage-Pochitaloff
- Laboratoire de Cytogénétique Hématologique, Département d'Hématologie, CHU Timone, APHM, Aix Marseille Université, Marseille 13005, France.
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Nguyen-Khac F, Bidet A, Chapiro E, Lefebvre C, Michaux L, Troadec MB. Cytogenetics in the management of hematological malignancies: Guidelines from the Groupe Francophone de Cytogénétique Hématologique. Curr Res Transl Med 2023; 71:103411. [PMID: 37984195 DOI: 10.1016/j.retram.2023.103411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 08/29/2023] [Accepted: 09/16/2023] [Indexed: 11/22/2023]
Affiliation(s)
- Florence Nguyen-Khac
- Centre de Recherche des Cordeliers, Sorbonne Université, Université Paris Cité, Inserm UMRS 1138, Drug Resistance in Hematological Malignancies Team, F-75006 Paris, France; Sorbonne Université, Service d'Hématologie Biologique, Hôpital Pitié-Salpêtrière, APHP, Paris, France.
| | - Audrey Bidet
- Service d'Hématologie Biologique, CHU Bordeaux, Bordeaux, France
| | - Elise Chapiro
- Centre de Recherche des Cordeliers, Sorbonne Université, Université Paris Cité, Inserm UMRS 1138, Drug Resistance in Hematological Malignancies Team, F-75006 Paris, France; Sorbonne Université, Service d'Hématologie Biologique, Hôpital Pitié-Salpêtrière, APHP, Paris, France
| | - Christine Lefebvre
- Unité de Génétique des Hémopathies, Service d'Hématologie Biologique, CHU Grenoble Alpes, Grenoble, France
| | - Lucienne Michaux
- Center for Human Genetics, University Hospitals Leuven, and KU Leuven, Leuven, Belgium
| | - Marie-Bérengère Troadec
- Univ Brest, Inserm, EFS, UMR 1078, GGB, F-29200 Brest, France; CHRU Brest, Service de génétique, Laboratoire de génétique chromosomique, Brest, France
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Van Thillo Q, Dewaele B, De Bie J, Michaux L, Devos T, Vandenberghe P. Revisiting a case of idiopathic hypereosinophilic syndrome with novel molecular techniques identifies a second case of a myeloid/lymphoid neoplasm with a SART3::PDGFRB fusion. Br J Haematol 2023. [PMID: 37129059 DOI: 10.1111/bjh.18849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 04/23/2023] [Accepted: 04/25/2023] [Indexed: 05/03/2023]
Affiliation(s)
| | | | - Jolien De Bie
- Department of Human Genetics, KU Leuven, Leuven, Belgium
| | | | - Timothy Devos
- Department of Haematology, University Hospitals Leuven, Leuven, Belgium
- Department of Microbiology and Immunology, Laboratory of Molecular Immunology (Rega Institute), KU Leuven, Leuven, Belgium
| | - Peter Vandenberghe
- Department of Haematology, University Hospitals Leuven, Leuven, Belgium
- Department of Human Genetics, KU Leuven, Leuven, Belgium
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Lierman E, Smits S, Debackere K, André M, Michaux L, Vandenberghe P. t(9;12)(q22;p13) ETV6::SYK: A new recurrent cytogenetic aberration and tyrosine kinase gene fusion in myeloid or lymphoid neoplasms associated with eosinophilia. Br J Haematol 2023; 200:665-668. [PMID: 36385372 DOI: 10.1111/bjh.18569] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 11/04/2022] [Accepted: 11/07/2022] [Indexed: 11/18/2022]
Affiliation(s)
- Els Lierman
- Center for Human Genetics, University Hospitals Leuven, Leuven, Belgium
| | - Sanne Smits
- Department of Human Genetics, KU Leuven, Leuven, Belgium
| | - Koen Debackere
- Department of Human Genetics, KU Leuven, Leuven, Belgium.,Center for Cancer Biology, Vlaams Instituut voor Biotechnologie, Leuven, Belgium.,Department of Hematology, University Hospitals Leuven, Leuven, Belgium
| | - Marc André
- Department of Hematology, CHU UCL-Namur, Yvoir, Belgium
| | - Lucienne Michaux
- Center for Human Genetics, University Hospitals Leuven, Leuven, Belgium.,Department of Human Genetics, KU Leuven, Leuven, Belgium
| | - Peter Vandenberghe
- Department of Human Genetics, KU Leuven, Leuven, Belgium.,Department of Hematology, University Hospitals Leuven, Leuven, Belgium
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Messiaen J, Uyttebroeck A, Michaux L, Vandenberghe P, Boeckx N, Jacobs SA. t(1;7;22)(p13;q21;q13) is a novel 3-way variant of t(1;22)(p13;q13) neonatal acute megakaryoblastic leukemia: A case report. Mol Clin Oncol 2023; 18:18. [PMID: 36798463 PMCID: PMC9926329 DOI: 10.3892/mco.2023.2614] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Accepted: 06/01/2021] [Indexed: 02/01/2023] Open
Abstract
Acute megakaryoblastic leukemia (AMKL) is a rare disease, occurring mostly in infants and young children. The chromosomal translocation t(1;22)(p13;q13), resulting in the RBM15-MKL1 fusion gene, is a recurrent and diagnostic translocation in infants with AMKL. The present case report describes a case of a newborn girl, without Down's syndrome, with congenital AMKL. At birth, the infant had hepatosplenomegaly and the peripheral blood count revealed anemia, thrombopenia and leukocytosis, with 28% blasts. Immunophenotyping demonstrated blasts positive for CD34, CD61 and CD42b. Karyotyping of these blasts (R-banding) showed a hitherto unreported chromosomal translocation, t(1;7;22)(p13;q21;q13), a 3-way variant of the t(1;22)(p13;q13) variant. Fluorescent in situ hybridization analysis confirmed the presence of the RBM15-MKL1 fusion gene.
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Affiliation(s)
- Julie Messiaen
- Translational Cell and Tissue Research, Department of Imaging and Pathology, KU Leuven, 3000 Leuven, Belgium,Department of Pediatric Hematology and Oncology, University Hospitals Leuven, 3000 Leuven, Belgium
| | - Anne Uyttebroeck
- Department of Pediatric Hematology and Oncology, University Hospitals Leuven, 3000 Leuven, Belgium,Pediatric Oncology, Department of Oncology, KU Leuven, 3000 Leuven, Belgium
| | - Lucienne Michaux
- Department of Human Genetics, KU Leuven, 3000 Leuven, Belgium,Department of Human Genetics, University Hospitals Leuven, 3000 Leuven, Belgium
| | - Peter Vandenberghe
- Department of Human Genetics, KU Leuven, 3000 Leuven, Belgium,Department of Hematology, University Hospitals Leuven, 3000 Leuven, Belgium
| | - Nancy Boeckx
- Laboratory of Clinical Bacteriology and Mycology, Department of Oncology, KU Leuven, 3000 Leuven, Belgium,Department of Laboratory Medicine, University Hospitals Leuven, 3000 Leuven, Belgium
| | - Sandra A. Jacobs
- Department of Pediatric Hematology and Oncology, University Hospitals Leuven, 3000 Leuven, Belgium,Pediatric Oncology, Department of Oncology, KU Leuven, 3000 Leuven, Belgium,Correspondence to: Professor Sandra A. Jacobs, Department of Pediatric Hematology and Oncology, University Hospitals Leuven, Herestraat 49, 3000 Leuven, Belgium
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Nguyen-Khac F, Bidet A, Troadec MB, Veronese L, Auger N, Daudignon A, Nadal N, Penther D, Michaux L, Lafage-Pochitaloff M, Lefebvre C. The 5th edition of the WHO classification of haematolymphoid tumors: comments from the Groupe Francophone de Cytogénétique Hématologique (GFCH). Leukemia 2023; 37:946-947. [PMID: 36707618 DOI: 10.1038/s41375-023-01821-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 01/10/2023] [Accepted: 01/13/2023] [Indexed: 01/28/2023]
Affiliation(s)
- Florence Nguyen-Khac
- Cell Death and Drug Resistance in Lymphoproliferative Disorders Team, Centre de Recherche des Cordeliers, INSERM UMRS, 1138, Paris, France. .,Sorbonne Université, Paris, France. .,Service d'Hématologie Biologique, Hôpital Pitié-Salpêtrière, AP-HP, Paris, France.
| | - Audrey Bidet
- CHU Bordeaux, Laboratoire d'Hématologie Biologique, F-33000, Bordeaux, France
| | - Marie-Bérengère Troadec
- Univ Brest, Inserm, EFS, UMR 1078, GGB, F-29200, Brest, France.,CHRU Brest, Service de génétique, Unité de génétique chromosomique, Brest, France
| | - Lauren Veronese
- Service de Cytogénétique Médicale, CHU Estaing, 1 place Lucie et Raymond Aubrac, 63003, Clermont-Ferrand, France
| | - Nathalie Auger
- Gustave Roussy, Génétique des tumeurs, 144 rue Edouard Vaillant, 94805, Villejuif, France
| | - Agnes Daudignon
- Institut de Génétique Médicale - Hôpital Jeanne de Flandre - CHRU de Lille, Av. Eugène Avinée, 59037, Lille Cedex, France
| | - Nathalie Nadal
- Service de génétique chromosomique et moléculaire - C.H.U. Dijon - Plateau Technique de Biologie, 2 rue Angélique Ducoudray, 21070, Dijon Cedex, France
| | - Dominique Penther
- Laboratoire de Génétique Oncologique, Centre Henri Becquerel, rue d'Amiens, 76038, Rouen, France
| | - Lucienne Michaux
- Center for Human Genetics, University Hospitals Leuven, and KU Leuven, Leuven, Belgium
| | | | - Christine Lefebvre
- Laboratoire de Génétique des Hémopathies - CHU GRENOBLE, 38043, Grenoble Cedex 09, France
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Vermeersch G, Delforge M, Havelange V, Graux C, Michaux L, Devos T. Case report: Chronic neutrophilic leukemia associated with monoclonal gammopathies. A case series and review of genetic characteristics and practical management. Front Oncol 2022; 12:1014671. [PMID: 36568246 PMCID: PMC9768602 DOI: 10.3389/fonc.2022.1014671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 11/04/2022] [Indexed: 12/12/2022] Open
Abstract
Chronic neutrophilic leukemia (CNL) is a rare but potentially aggressive BCR::ABL1 negative myeloproliferative neoplasm, characterized by sustained mature, neutrophilic leukocytosis. The discovery of key driver mutations in the colony-stimulating-factor-3 receptor (CSF3R) gene resulted in the updated World Health Organization (WHO) diagnostic criteria in 2016. A significant number of CNL cases have been associated with plasma cell dyscrasias, predominantly multiple myeloma (MM) and monoclonal gammopathy of unknown significance (MGUS). Compared to pure CNL, mutated CSF3R is infrequently reported in CNL cases associated with monoclonal gammopathies (MG). Until now it remains unclear whether CNL and occurring plasma cell neoplasms are clonally related or CNL is developing secondary to the underlying dyscrasia. Owing to its rarity, currently no standard of care management exists for CNL and MG-associated CNL. In this case series we report the multi-center experience of five MG-associated CNL cases with a median age of diagnosis of 69 years. Three patients (66%) showed predominance of lambda light chain expression. Four (80%) eventually evolved to MM, and one CNL-MGUS patient developed secondary acute myeloid leukemia (AML). Mutated CSF3R was present in the patient who developed AML but was absent in other cases. To assess possible associated genetic aberrations we performed recurrent analysis with next-generation sequencing (NGS). Two patients (40%) deceased with a median time of survival of 8 years after CNL diagnosis. Three (60%) are currently in follow-up with no reoccurring leukocytosis. This case series, followed by a short review, provides a long-term clinical and genetic overview of five CNL cases associated with MG.
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Affiliation(s)
- Gaël Vermeersch
- Department of Hematology, University Hospitals Leuven, KU Leuven, Leuven, Belgium
| | - Michel Delforge
- Department of Hematology, University Hospitals Leuven, KU Leuven, Leuven, Belgium
| | - Violaine Havelange
- Department of Hematology, Université Catholique de Louvain Saint-Luc, Woluwe-Saint-Lambert, Belgium
| | - Carlos Graux
- Department of Hematology, Université Catholique de Louvain, CHU UCL Namur - site Godinne, Yvoir, Belgium
| | | | - Timothy Devos
- Department of Hematology, University Hospitals Leuven, KU Leuven, Leuven, Belgium
- Department of Microbiology and Immunology, Laboratory of Molecular Immunology (Rega Institute), KU Leuven, Leuven, Belgium
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Claerhout H, Vranckx H, Lierman E, Michaux L, Boeckx N. Next generation sequencing in therapy-related myeloid neoplasms compared to de novo myeloid neoplasms. Acta Clin Belg 2022; 77:658-663. [PMID: 34197279 DOI: 10.1080/17843286.2021.1943232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
INTRODUCTION Therapy-related myeloid neoplasms (t-MN) are frequently categorized according to previous therapy or pattern of cytogenetic abnormalities. Our objective was to evaluate and compare the mutational profile of de novo and t-MN by next generation sequencing. METHODS Sixty-four samples from patients with t-MN, previously treated for a solid tumor (mainly breast), or de novo AML, MDS, MDS/MPN were selected for our study. The library was prepared using diagnostic samples and the TruSight Myeloid sequencing panel targeting 54 genes. Samples were sequenced on a MiSeq. The classification system of the Belgian ComPerMed Expert Panel was used for the biological variant classification. RESULTS Taking only pathogenic, probably pathogenic variants and variants of unknown significance into account 141 variants in 33 genes were found in 52 of 64 samples (81%; mean number of variants per patient = 2; range = [1-11]; 67 variants in 25 genes in t-MN and 74 variants in 25 genes in de novo MN). Overall, the most frequently detected variants included TET2 (n = 22), TP53 (n = 12), DNMT3A (n = 10) and FLT3, NPM1, RUNX1 (n = 8 each). CONCLUSION Our study revealed a high variety of variants both in t-MN and de novo MN patients. There was a higher incidence of FLT3 and TP53 variants in t-MN compared to de novo MN.
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Affiliation(s)
- Helena Claerhout
- Department of Laboratory Medicine, University Hospitals Leuven, Leuven, Belgium
| | - Hilde Vranckx
- Center for Human Genetics, University Hospitals Leuven and KU Leuven, Leuven, Belgium
| | - Els Lierman
- Center for Human Genetics, University Hospitals Leuven and KU Leuven, Leuven, Belgium
| | - Lucienne Michaux
- Center for Human Genetics, University Hospitals Leuven and KU Leuven, Leuven, Belgium
| | - Nancy Boeckx
- Department of Laboratory Medicine, University Hospitals Leuven, Leuven, Belgium
- Department of Oncology, KU Leuven, Leuven, Belgium
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11
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Tuveri S, Debackere K, Marcelis L, Dierckxsens N, Demeulemeester J, Dimitriadou E, Dierickx D, Lefesvre P, Deraedt K, Graux C, Michaux L, Cools J, Tousseyn T, Vermeesch JR, Wlodarska I. Primary mediastinal large B-cell lymphoma is characterized by large-scale copy-neutral loss of heterozygosity. Genes Chromosomes Cancer 2022; 61:603-615. [PMID: 35611992 DOI: 10.1002/gcc.23069] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 05/17/2022] [Accepted: 05/20/2022] [Indexed: 11/07/2022] Open
Abstract
Development of primary mediastinal B-cell lymphoma (PMBL) is driven by cumulative genomic aberrations. We discovered a unique copy-neutral loss of heterozygosity (CN-LOH) landscape of PMBL which distinguishes this tumour from other B-cell malignancies, including the biologically related diffuse large B-cell lymphoma. Using single nucleotide polymorphism array analysis we identified large-scale CN-LOH lesions in 91% (30/33) of diagnostic PMBLs and both investigated PMBL-derived cell lines. Altogether, the cohort showed 157 extra-large (25.3-248.4 Mb) CN-LOH lesions affecting up to 14 chromosomes per case (mean of 4.4) and resulting in a reduction of heterozygosity an average of 9.9% (range 1.3-51%) of the genome. Predominant involvement of terminal chromosomal segments suggests the implication of B-cell specific crossover events in the pathogenesis of PMBL. Notably, CN-LOH stretches non-randomly clustered on 6p (60%), 15 (37.2%) and 17q (40%), and frequently co-occurred with homozygous mutations in the MHC I (6p21), B2M (15q15) and GNA13 (17q23) genes, respectively, as shown by preliminary whole-exome/genome sequencing data. Altogether, our findings implicate CN-LOH as a novel and distinct mutational process contributing to the molecular pathogenesis of PMBL. The aberration acting as 'second hit' in the Knudson hypothesis, ranks as the major mechanism converting to homozygosity the PMBL-related driver genes. Screening of the cohort of 199 B cell leukamia/lymphoma whole-genomes revealed significant differences in the CN-LOH landscape of PMBL and other B-cell malignancies, including the biologically related diffuse large B-cell lymphoma.
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Affiliation(s)
| | - Koen Debackere
- Laboratory for Experimental Hematology, KU Leuven, Leuven, Belgium
- Center for Cancer Biology, VIB, Leuven, Belgium
| | - Lukas Marcelis
- Translational Cell and Tissue Research, KU Leuven, Leuven, Belgium
- Department of Pathology, University Hospitals Leuven, Leuven, Belgium
| | | | - Jonas Demeulemeester
- Center for Human Genetics, KU Leuven, Leuven, Belgium
- Cancer Genomics Laboratory, The Francis Crick Institute, London, UK
| | | | - Daan Dierickx
- Department of Hematology, University Hospitals Leuven, Leuven, Belgium
| | - Pierre Lefesvre
- Department of Pathology, Free University Hospital, Brussels, Belgium
| | - Karen Deraedt
- Anatomo-Pathology, Hospital East Limburg, Genk, Belgium
| | - Carlos Graux
- Department of Hematology, Mont-Godinne University Hospital, Yvoir, Belgium
| | | | - Jan Cools
- Center for Human Genetics, KU Leuven, Leuven, Belgium
- Center for Cancer Biology, VIB, Leuven, Belgium
| | - Thomas Tousseyn
- Translational Cell and Tissue Research, KU Leuven, Leuven, Belgium
- Department of Pathology, University Hospitals Leuven, Leuven, Belgium
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12
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Rack K, Bie J, Ameye G, Gielen O, Demeyer S, Cools J, Keersmaecker K, Vermeesch JR, Maertens J, Segers H, Michaux L, Dewaele B. Optimizing the diagnostic workflow for acute lymphoblastic leukemia by optical genome mapping. Am J Hematol 2022; 97:548-561. [PMID: 35119131 PMCID: PMC9314940 DOI: 10.1002/ajh.26487] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 01/28/2022] [Accepted: 02/01/2022] [Indexed: 12/11/2022]
Abstract
Acute lymphoblastic leukemia (ALL) is a malignancy that can be subdivided into distinct entities based on clinical, immunophenotypic and genomic features, including mutations, structural variants (SVs), and copy number alterations (CNA). Chromosome banding analysis (CBA) and Fluorescent In‐Situ Hybridization (FISH) together with Multiple Ligation‐dependent Probe Amplification (MLPA), array and PCR‐based methods form the backbone of routine diagnostics. This approach is labor‐intensive, time‐consuming and costly. New molecular technologies now exist that can detect SVs and CNAs in one test. Here we apply one such technology, optical genome mapping (OGM), to the diagnostic work‐up of 41 ALL cases. Compared to our standard testing pathway, OGM identified all recurrent CNAs and SVs as well as additional recurrent SVs and the resulting fusion genes. Based on the genomic profile obtained by OGM, 32 patients could be assigned to one of the major cytogenetic risk groups compared to 23 with the standard approach. The latter identified 24/34 recurrent chromosomal abnormalities, while OGM identified 33/34, misinterpreting only 1 case with low hypodiploidy. The results of MLPA were concordant in 100% of cases. Overall, there was excellent concordance between the results. OGM increased the detection rate and cytogenetic resolution, and abrogated the need for cascade testing, resulting in reduced turnaround times. OGM also provided opportunities for better patient stratification and accurate treatment options. However, for comprehensive cytogenomic testing, OGM still needs to be complemented with CBA or SNP‐array to detect ploidy changes and with BCR::ABL1 FISH to assign patients as soon as possible to targeted therapy.
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Affiliation(s)
- Katrina Rack
- Laboratory for the Cytogenetic and Molecular Diagnosis of Hematological Malignancies, Centre for Human Genetics University Hospitals Leuven Leuven Belgium
| | - Jolien Bie
- Laboratory for the Cytogenetic and Molecular Diagnosis of Hematological Malignancies, Centre for Human Genetics University Hospitals Leuven Leuven Belgium
- Laboratory for the Molecular Biology of Leukemia KU Leuven Leuven Belgium
| | - Geneviève Ameye
- Laboratory for the Cytogenetic and Molecular Diagnosis of Hematological Malignancies, Centre for Human Genetics University Hospitals Leuven Leuven Belgium
| | - Olga Gielen
- Laboratory for the Molecular Biology of Leukemia KU Leuven Leuven Belgium
- Centre for Cancer Biology Flemish Institute for Biotechnology (VIB) Leuven Belgium
| | - Sofie Demeyer
- Laboratory for the Molecular Biology of Leukemia KU Leuven Leuven Belgium
- Centre for Cancer Biology Flemish Institute for Biotechnology (VIB) Leuven Belgium
| | - Jan Cools
- Laboratory for the Molecular Biology of Leukemia KU Leuven Leuven Belgium
- Centre for Cancer Biology Flemish Institute for Biotechnology (VIB) Leuven Belgium
- Leuvens Kanker Instituut (LKI) KU Leuven – University Hospitals Leuven Leuven Belgium
| | - Kim Keersmaecker
- Leuvens Kanker Instituut (LKI) KU Leuven – University Hospitals Leuven Leuven Belgium
- Department of Oncology KU Leuven Leuven Belgium
| | - Joris R. Vermeesch
- Department of Human Genetics KU Leuven Leuven Belgium
- Centre for Human Genetics University Hospitals Leuven Leuven Belgium
| | - Johan Maertens
- Department of Hematology University Hospitals Leuven Leuven Belgium
| | - Heidi Segers
- Leuvens Kanker Instituut (LKI) KU Leuven – University Hospitals Leuven Leuven Belgium
- Department of Pediatric Oncology‐Hematology University Hospitals Leuven Leuven Belgium
| | - Lucienne Michaux
- Laboratory for the Cytogenetic and Molecular Diagnosis of Hematological Malignancies, Centre for Human Genetics University Hospitals Leuven Leuven Belgium
| | - Barbara Dewaele
- Laboratory for the Cytogenetic and Molecular Diagnosis of Hematological Malignancies, Centre for Human Genetics University Hospitals Leuven Leuven Belgium
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13
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Nguyen-Khac F, Bidet A, Daudignon A, Lafage-Pochitaloff M, Ameye G, Bilhou-Nabéra C, Chapiro E, Collonge-Rame MA, Cuccuini W, Douet-Guilbert N, Eclache V, Luquet I, Michaux L, Nadal N, Penther D, Quilichini B, Terre C, Lefebvre C, Troadec MB, Véronèse L. The complex karyotype in hematological malignancies: a comprehensive overview by the Francophone Group of Hematological Cytogenetics (GFCH). Leukemia 2022; 36:1451-1466. [DOI: 10.1038/s41375-022-01561-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 03/24/2022] [Accepted: 03/28/2022] [Indexed: 12/16/2022]
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14
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Vekemans MC, Doyen C, Caers J, Wu K, Kentos A, Mineur P, Michaux L, Delforge M, Meuleman N. Recommendations on the management of multiple myeloma in 2020. Acta Clin Belg 2022; 77:445-461. [PMID: 33355041 DOI: 10.1080/17843286.2020.1860411] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
With the introduction of immunomodulatory drugs, proteasome inhibitors, and anti-CD38 monoclonal antibodies, major improvements have been achieved in the treatment of multiple myeloma (MM), with a significant impact on the outcome of this disease. Different treatment combinations are now in use and other therapies are being developed. Based on an extensive review of the recent literature, we propose practical recommendations on myeloma management, to be used by hematologists as a reference for daily practice.
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Affiliation(s)
| | - Chantal Doyen
- Centre Hospitalier Universitaire de Namur, UCL, Yvoir, Belgium
| | - Jo Caers
- Centre Hospitalier Universitaire de Liège, Ulg, Liège, Belgium
| | - Kalung Wu
- Zienkenhuis Netwerk Antwerpen, Antwerp, Belgium
| | | | | | - Lucienne Michaux
- Universitair Ziekenhuis Leuven Gasthuisberg, KUL, Leuven, Belgium
| | - Michel Delforge
- Universitair Ziekenhuis Leuven Gasthuisberg, KUL, Leuven, Belgium
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15
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Bos S, Daniëls L, Michaux L, Vanden Bempt I, Vermeer S, Woei-A-Jin FSH, Schöffski P, Weynand B, Sciot R, Declercq S, Ceulemans LJ, Godinas L, Verleden GM, Van Raemdonck DE, Dupont LJ, Vos R. Case Report: An Unusual Course of Angiosarcoma After Lung Transplantation. Front Immunol 2022; 12:789851. [PMID: 35046948 PMCID: PMC8761760 DOI: 10.3389/fimmu.2021.789851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 12/07/2021] [Indexed: 11/25/2022] Open
Abstract
A 35-year-old woman underwent bilateral lung transplantation for primary ciliary dyskinesia and developed vascular tumors over a slow time course. Initial presentation of non-specific vascular tumors in the lungs and liver for up to 6 years after transplantation evolved toward bilateral ovarian angiosarcoma. Tumor analysis by haplotyping and human leukocyte antigen typing showed mixed donor chimerism, proving donor origin of the tumoral lesions. In retrospect, the donor became brain dead following neurosurgical complications for a previously biopsy-proven cerebral hemangioma, which is believed to have been a precursor lesion of the vascular malignancy in the recipient. Donor-transmitted tumors should always be suspected in solid organ transplant recipients in case of uncommon disease course or histology, and proper tissue-based diagnosis using sensitive techniques should be pursued.
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Affiliation(s)
- Saskia Bos
- Department of Respiratory Diseases, University Hospitals Leuven, Leuven, Belgium.,Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Liesbeth Daniëls
- Histocompatibility and Immunogenetics Laboratory (HILA), Red Cross-Flanders, Mechelen, Belgium
| | - Lucienne Michaux
- Center for Human Genetics, University Hospitals Leuven, Leuven, Belgium
| | | | - Sascha Vermeer
- Center for Human Genetics, University Hospitals Leuven, Leuven, Belgium
| | - Fj Sherida H Woei-A-Jin
- Department of General Medical Oncology, University Hospitals Leuven, Leuven Cancer Institute, KU Leuven, Leuven, Belgium
| | - Patrick Schöffski
- Department of General Medical Oncology, University Hospitals Leuven, Leuven Cancer Institute, KU Leuven, Leuven, Belgium
| | - Birgit Weynand
- Department of Pathology, University Hospitals Leuven, Leuven, Belgium
| | - Raf Sciot
- Department of Pathology, University Hospitals Leuven, Leuven, Belgium
| | - Sabine Declercq
- Department of Pathology, ZNA Middelheim Hospital, Antwerp, Belgium
| | - Laurens J Ceulemans
- Department of Thoracic Surgery, University Hospitals Leuven, Leuven, Belgium.,Department of CHROMETA, Laboratory of Respiratory Diseases and Thoracic Surgery (BREATHE), KU Leuven, Leuven, Belgium
| | - Laurent Godinas
- Department of Respiratory Diseases, University Hospitals Leuven, Leuven, Belgium.,Department of CHROMETA, Laboratory of Respiratory Diseases and Thoracic Surgery (BREATHE), KU Leuven, Leuven, Belgium
| | - Geert M Verleden
- Department of Respiratory Diseases, University Hospitals Leuven, Leuven, Belgium.,Department of CHROMETA, Laboratory of Respiratory Diseases and Thoracic Surgery (BREATHE), KU Leuven, Leuven, Belgium
| | - Dirk E Van Raemdonck
- Department of Thoracic Surgery, University Hospitals Leuven, Leuven, Belgium.,Department of CHROMETA, Laboratory of Respiratory Diseases and Thoracic Surgery (BREATHE), KU Leuven, Leuven, Belgium
| | - Lieven J Dupont
- Department of Respiratory Diseases, University Hospitals Leuven, Leuven, Belgium.,Department of CHROMETA, Laboratory of Respiratory Diseases and Thoracic Surgery (BREATHE), KU Leuven, Leuven, Belgium
| | - Robin Vos
- Department of Respiratory Diseases, University Hospitals Leuven, Leuven, Belgium.,Department of CHROMETA, Laboratory of Respiratory Diseases and Thoracic Surgery (BREATHE), KU Leuven, Leuven, Belgium
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16
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Cappuyns S, Verbesselt M, Van De Bruaene A, Bogaert J, Michaux L, Delforge M. Case report: Two sisters with light-chain cardiac amyloidosis, a mere coincidence? Eur Heart J Case Rep 2022; 6:ytac084. [PMID: 35299705 PMCID: PMC8922710 DOI: 10.1093/ehjcr/ytac084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 07/27/2021] [Accepted: 02/07/2022] [Indexed: 11/22/2022]
Abstract
Background Light-chain amyloidosis has always been described as a sporadic disease caused by plasma cell dyscrasia. Cardiac amyloidosis refers to cardiac involvement with infiltration of amyloid fibrils in the myocardium. The degree of cardiac involvement is the greatest predictor of prognosis. To our knowledge, AL cardiac amyloidosis has only been reported once before in first-degree relatives. Case summary In this report, we describe the unusual cases of two sisters with light-chain cardiac amyloidosis. The first patient underwent autologous stem cell transplantation and remained in remission for 10 years until the disease relapsed and she died of end-stage heart failure. The second patient was promptly started on a chemotherapy regimen but died shortly after her initial diagnosis due to rapid progression of cardiac dysfunction. Conclusion Cardiac amyloidosis is a severe life-threatening condition which requires a multidisciplinary diagnostic and therapeutic approach. Based on this case report, a genetic cause for AL amyloidosis might be suspected or is this a purely coincidental finding? Counselling, screening, and follow-up of other family members are very challenging. As is often the case with rare diseases, many unsolved questions remain, representing important challenges for clinicians.
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Affiliation(s)
- Sarah Cappuyns
- Department of Internal Medicine, Katholieke Universiteit Leuven (KUL)/University Hospital Leuven (UZ Leuven), Herestraat 49, 3000 Leuven, Belgium
| | - Matthias Verbesselt
- Department of Internal Medicine, Katholieke Universiteit Leuven (KUL)/University Hospital Leuven (UZ Leuven), Herestraat 49, 3000 Leuven, Belgium
| | - Alexander Van De Bruaene
- Department of Cardiology, Katholieke Universiteit Leuven (KUL)/University Hospital Leuven (UZ Leuven), Herestraat 49, 3000 Leuven, Belgium
| | - Jan Bogaert
- Department of Radiology, Katholieke Universiteit Leuven (KUL)/University Hospital Leuven (UZ Leuven), Herestraat 49, 3000 Leuven, Belgium
| | - Lucienne Michaux
- Centrum voor Menselijke Erfelijkheid, Katholieke Universiteit Leuven (KUL)/University Hospital Leuven (UZ Leuven), Herestraat 49, 3000 Leuven, Belgium
| | - Michel Delforge
- Department of Hematology, Katholieke Universiteit Leuven (KUL)/University Hospital Leuven (UZ Leuven), Herestraat 49, 3000 Leuven, Belgium
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17
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Lafage-Pochitaloff M, Gerby B, Baccini V, Largeaud L, Fregona V, Prade N, Juvin PY, Jamrog L, Bories P, Hébrard S, Lagarde S, Mansat-De Mas V, Dovey OM, Yusa K, Vassiliou GS, Jansen JH, Tekath T, Rombaut D, Ameye G, Barin C, Bidet A, Boudjarane J, Collonge-Rame MA, Gervais C, Ittel A, Lefebvre C, Luquet I, Michaux L, Nadal N, Poirel HA, Radford-Weiss I, Ribourtout B, Richebourg S, Struski S, Terré C, Tigaud I, Penther D, Eclache V, Fontenay M, Broccardo C, Delabesse, E. The CADM1 tumor suppressor gene is a major candidate gene in MDS with deletion of the long arm of chromosome 11. Blood Adv 2022; 6:386-398. [PMID: 34638130 PMCID: PMC8791575 DOI: 10.1182/bloodadvances.2021005311] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 08/10/2021] [Indexed: 11/24/2022] Open
Abstract
Myelodysplastic syndromes (MDS) represent a heterogeneous group of clonal hematopoietic stem cell disorders characterized by ineffective hematopoiesis leading to peripheral cytopenias and in a substantial proportion of cases to acute myeloid leukemia. The deletion of the long arm of chromosome 11, del(11q), is a rare but recurrent clonal event in MDS. Here, we detail the largest series of 113 cases of MDS and myelodysplastic syndromes/myeloproliferative neoplasms (MDS/MPN) harboring a del(11q) analyzed at clinical, cytological, cytogenetic, and molecular levels. Female predominance, a survival prognosis similar to other MDS, a low monocyte count, and dysmegakaryopoiesis were the specific clinical and cytological features of del(11q) MDS. In most cases, del(11q) was isolated, primary and interstitial encompassing the 11q22-23 region containing ATM, KMT2A, and CBL genes. The common deleted region at 11q23.2 is centered on an intergenic region between CADM1 (also known as Tumor Suppressor in Lung Cancer 1) and NXPE2. CADM1 was expressed in all myeloid cells analyzed in contrast to NXPE2. At the functional level, the deletion of Cadm1 in murine Lineage-Sca1+Kit+ cells modifies the lymphoid-to-myeloid ratio in bone marrow, although not altering their multilineage hematopoietic reconstitution potential after syngenic transplantation. Together with the frequent simultaneous deletions of KMT2A, ATM, and CBL and mutations of ASXL1, SF3B1, and CBL, we show that CADM1 may be important in the physiopathology of the del(11q) MDS, extending its role as tumor-suppressor gene from solid tumors to hematopoietic malignancies.
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Affiliation(s)
- Marina Lafage-Pochitaloff
- Groupe Francophone de Cytogénétique Hématologique (GFCH)
- Laboratoire de Cytogénétique Hématologique, Centre Hospitalier Universitaire (CHU) de Marseille, Aix-Marseille University, Marseille, France
| | - Bastien Gerby
- Centre de Recherches en Cancérologie de Toulouse (CRCT), Team 16, Institut National de la Santé et de la Recherche Médicale (INSERM), Toulouse, France
| | - Véronique Baccini
- Groupe Francophone d’Hématologie Cellulaire (GFHC) and
- Laboratoire d’hématologie, CHU de Guadeloupe, Inserm Unité Mixte de Recherche 1134, Pointe à Pitre, France
| | - Laetitia Largeaud
- Centre de Recherches en Cancérologie de Toulouse (CRCT), Team 16, Institut National de la Santé et de la Recherche Médicale (INSERM), Toulouse, France
- Laboratoire d’Hématologie, Institut Universitaire de Cancérologie de Toulouse, CHU Toulouse, France
- Department of Hematology, University Toulouse III, Toulouse, France
| | - Vincent Fregona
- Centre de Recherches en Cancérologie de Toulouse (CRCT), Team 16, Institut National de la Santé et de la Recherche Médicale (INSERM), Toulouse, France
| | - Naïs Prade
- Centre de Recherches en Cancérologie de Toulouse (CRCT), Team 16, Institut National de la Santé et de la Recherche Médicale (INSERM), Toulouse, France
- Laboratoire d’Hématologie, Institut Universitaire de Cancérologie de Toulouse, CHU Toulouse, France
| | - Pierre-Yves Juvin
- Centre de Recherches en Cancérologie de Toulouse (CRCT), Team 16, Institut National de la Santé et de la Recherche Médicale (INSERM), Toulouse, France
| | - Laura Jamrog
- Centre de Recherches en Cancérologie de Toulouse (CRCT), Team 16, Institut National de la Santé et de la Recherche Médicale (INSERM), Toulouse, France
| | - Pierre Bories
- Centre de Recherches en Cancérologie de Toulouse (CRCT), Team 16, Institut National de la Santé et de la Recherche Médicale (INSERM), Toulouse, France
| | - Sylvie Hébrard
- Centre de Recherches en Cancérologie de Toulouse (CRCT), Team 16, Institut National de la Santé et de la Recherche Médicale (INSERM), Toulouse, France
| | - Stéphanie Lagarde
- Centre de Recherches en Cancérologie de Toulouse (CRCT), Team 16, Institut National de la Santé et de la Recherche Médicale (INSERM), Toulouse, France
- Laboratoire d’Hématologie, Institut Universitaire de Cancérologie de Toulouse, CHU Toulouse, France
| | - Véronique Mansat-De Mas
- Laboratoire d’Hématologie, Institut Universitaire de Cancérologie de Toulouse, CHU Toulouse, France
- Centre de Recherches en Cancérologie de Toulouse (CRCT), Team 8, Institut National de la Santé et de la Recherche Médicale (INSERM), Toulouse, France
| | - Oliver M. Dovey
- Gene Editing, Wellcome Sanger Institute, Hinxton, Cambridge, UK
| | - Kosuke Yusa
- Stem Cell Genetics, Wellcome Sanger Institute, Hinxton, Cambridge, UK
| | - George S. Vassiliou
- Wellcome Sanger Institute, Hinxton, UK
- Department of Haematology, Cambridge University Hospitals National Health Service Trust, Cambridge, UK
- Wellcome-Medical Research Council Stem Cell Institute, Cambridge Biomedical Campus, University of Cambridge, Cambridge, UK
| | - Joop H. Jansen
- Department of Laboratory Medicine, Laboratory of Hematology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Tobias Tekath
- Institute of Medical Informatics, University of Münster, Münster, Germany
| | - David Rombaut
- Institut Cochin, Université de Paris, Inserm U1016, Centre National de la Recherche Scientifique UMR8104, Paris, France
| | - Geneviève Ameye
- Groupe Francophone de Cytogénétique Hématologique (GFCH)
- Belgium Cancer Registry, Brussels, Belgium
- Department of Human Genetics, Katholieke Universiteit Leuven and Universitair Ziekenhuis, Leuven, Belgium
| | - Carole Barin
- Groupe Francophone de Cytogénétique Hématologique (GFCH)
- Laboratoire de Cytogénétique, CHU de Tours, France
| | - Audrey Bidet
- Groupe Francophone de Cytogénétique Hématologique (GFCH)
- Laboratoire d’Hématologie, CHU de Bordeaux, Bordeaux, France
| | - John Boudjarane
- Laboratoire de Cytogénétique Hématologique, Centre Hospitalier Universitaire (CHU) de Marseille, Aix-Marseille University, Marseille, France
| | - Marie-Agnès Collonge-Rame
- Groupe Francophone de Cytogénétique Hématologique (GFCH)
- Laboratoire de Cytogénétique, CHU de Besançon, Besançon, France
| | - Carine Gervais
- Groupe Francophone de Cytogénétique Hématologique (GFCH)
- Laboratoire de Cytogénétique, CHU de Strasbourg, Strasbourg, France
| | - Antoine Ittel
- Groupe Francophone de Cytogénétique Hématologique (GFCH)
- Département de Biopathologie, Institut Paoli-Calmettes, Marseille, France
| | - Christine Lefebvre
- Groupe Francophone de Cytogénétique Hématologique (GFCH)
- Laboratoire de Cytogénétique, CHU de Grenoble, Grenoble, France
| | - Isabelle Luquet
- Groupe Francophone de Cytogénétique Hématologique (GFCH)
- Laboratoire d’Hématologie, Institut Universitaire de Cancérologie de Toulouse, CHU Toulouse, France
- Laboratoire de Cytogénétique, CHU de Reims, Reims, France
| | - Lucienne Michaux
- Groupe Francophone de Cytogénétique Hématologique (GFCH)
- Department of Human Genetics, Katholieke Universiteit Leuven and Universitair Ziekenhuis, Leuven, Belgium
| | - Nathalie Nadal
- Groupe Francophone de Cytogénétique Hématologique (GFCH)
- Laboratoire de Cytogénétique, CHU de Saint-Etienne, Saint-Etienne, France
| | - Hélène A. Poirel
- Groupe Francophone de Cytogénétique Hématologique (GFCH)
- Belgium Cancer Registry, Brussels, Belgium
| | - Isabelle Radford-Weiss
- Groupe Francophone de Cytogénétique Hématologique (GFCH)
- Laboratoire de Cytogénétique, CHU de Paris-Necker, Paris, France
| | - Bénédicte Ribourtout
- Groupe Francophone de Cytogénétique Hématologique (GFCH)
- Laboratoire d'Hématologie, CHU d'Angers, Angers, France
| | - Steven Richebourg
- Groupe Francophone de Cytogénétique Hématologique (GFCH)
- Laboratoire de Cytogénétique, CHU de Nantes, Nantes, France
| | - Stéphanie Struski
- Groupe Francophone de Cytogénétique Hématologique (GFCH)
- Laboratoire d’Hématologie, Institut Universitaire de Cancérologie de Toulouse, CHU Toulouse, France
| | - Christine Terré
- Groupe Francophone de Cytogénétique Hématologique (GFCH)
- Laboratoire de Cytogénétique, CH de Versailles, Le Chesnay, France
| | - Isabelle Tigaud
- Groupe Francophone de Cytogénétique Hématologique (GFCH)
- Laboratoire de Cytogénétique, CHU de Lyon, Lyon, France
| | - Dominique Penther
- Groupe Francophone de Cytogénétique Hématologique (GFCH)
- Laboratoire de Cytogénétique, Centre Henri-Becquerel, Rouen, France
| | - Virginie Eclache
- Groupe Francophone de Cytogénétique Hématologique (GFCH)
- Laboratoire d’Hématologie, CHU Avicenne, Bobigny, France
- Groupe Francophone des Myélodysplasies (GFM); and
| | - Michaela Fontenay
- Institut Cochin, Université de Paris, Inserm U1016, Centre National de la Recherche Scientifique UMR8104, Paris, France
- Groupe Francophone des Myélodysplasies (GFM); and
- Laboratoire d’hématologie, Hôpital Cochin, Assistance Publique-Hôpitaux de Paris, Centre-Université de Paris, Paris, France
| | - Cyril Broccardo
- Centre de Recherches en Cancérologie de Toulouse (CRCT), Team 16, Institut National de la Santé et de la Recherche Médicale (INSERM), Toulouse, France
| | - Eric Delabesse,
- Centre de Recherches en Cancérologie de Toulouse (CRCT), Team 16, Institut National de la Santé et de la Recherche Médicale (INSERM), Toulouse, France
- Laboratoire d’Hématologie, Institut Universitaire de Cancérologie de Toulouse, CHU Toulouse, France
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18
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Debackere K, Marcelis L, Demeyer S, Vanden Bempt M, Mentens N, Gielen O, Jacobs K, Broux M, Verhoef G, Michaux L, Graux C, Wlodarska I, Gaulard P, de Leval L, Tousseyn T, Cools J, Dierickx D. Fusion transcripts FYN-TRAF3IP2 and KHDRBS1-LCK hijack T cell receptor signaling in peripheral T-cell lymphoma, not otherwise specified. Nat Commun 2021; 12:3705. [PMID: 34140493 PMCID: PMC8211700 DOI: 10.1038/s41467-021-24037-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 05/28/2021] [Indexed: 02/07/2023] Open
Abstract
Peripheral T-cell lymphoma (PTCL) is a heterogeneous group of non-Hodgkin lymphomas with poor prognosis. Up to 30% of PTCL lack distinctive features and are classified as PTCL, not otherwise specified (PTCL-NOS). To further improve our understanding of the genetic landscape and biology of PTCL-NOS, we perform RNA-sequencing of 18 cases and validate results in an independent cohort of 37 PTCL cases. We identify FYN-TRAF3IP2, KHDRBS1-LCK and SIN3A-FOXO1 as new in-frame fusion transcripts, with FYN-TRAF3IP2 as a recurrent fusion detected in 8 of 55 cases. Using ex vivo and in vivo experiments, we demonstrate that FYN-TRAF3IP2 and KHDRBS1-LCK activate signaling pathways downstream of the T cell receptor (TCR) complex and confer therapeutic vulnerability to clinically available drugs.
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MESH Headings
- Adaptor Proteins, Signal Transducing/genetics
- Adaptor Proteins, Signal Transducing/metabolism
- Animals
- Cell Line, Tumor
- Cell Membrane/metabolism
- Cohort Studies
- DNA-Binding Proteins/genetics
- DNA-Binding Proteins/metabolism
- Forkhead Box Protein O1/genetics
- Forkhead Box Protein O1/metabolism
- Gene Expression Regulation, Neoplastic/genetics
- Humans
- Intracellular Signaling Peptides and Proteins/metabolism
- Kaplan-Meier Estimate
- Lymphocyte Specific Protein Tyrosine Kinase p56(lck)/genetics
- Lymphocyte Specific Protein Tyrosine Kinase p56(lck)/metabolism
- Lymphoma, T-Cell, Peripheral/genetics
- Lymphoma, T-Cell, Peripheral/metabolism
- Lymphoma, T-Cell, Peripheral/pathology
- Mice
- Mice, Inbred C57BL
- NF-kappa B/metabolism
- Oncogene Proteins, Fusion/genetics
- Oncogene Proteins, Fusion/metabolism
- Proto-Oncogene Proteins c-fyn/genetics
- Proto-Oncogene Proteins c-fyn/metabolism
- RNA-Binding Proteins/genetics
- RNA-Binding Proteins/metabolism
- RNA-Seq
- Receptors, Antigen, T-Cell/metabolism
- Signal Transduction/genetics
- Sin3 Histone Deacetylase and Corepressor Complex/genetics
- Sin3 Histone Deacetylase and Corepressor Complex/metabolism
- bcl-X Protein/antagonists & inhibitors
- bcl-X Protein/metabolism
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Affiliation(s)
- Koen Debackere
- Laboratory for Experimental Hematology, KU Leuven, Leuven, Belgium
- Center for Cancer Biology, VIB, Leuven, Belgium
| | - Lukas Marcelis
- Translational Cell & Tissue Research, KU Leuven, Leuven, Belgium
| | - Sofie Demeyer
- Center for Cancer Biology, VIB, Leuven, Belgium
- Center for Human Genetics, KU Leuven, Leuven, Belgium
| | - Marlies Vanden Bempt
- Laboratory for Experimental Hematology, KU Leuven, Leuven, Belgium
- Center for Cancer Biology, VIB, Leuven, Belgium
- Center for Human Genetics, KU Leuven, Leuven, Belgium
| | - Nicole Mentens
- Center for Cancer Biology, VIB, Leuven, Belgium
- Center for Human Genetics, KU Leuven, Leuven, Belgium
| | - Olga Gielen
- Center for Cancer Biology, VIB, Leuven, Belgium
- Center for Human Genetics, KU Leuven, Leuven, Belgium
| | - Kris Jacobs
- Center for Cancer Biology, VIB, Leuven, Belgium
- Center for Human Genetics, KU Leuven, Leuven, Belgium
| | - Michael Broux
- Center for Cancer Biology, VIB, Leuven, Belgium
- Center for Human Genetics, KU Leuven, Leuven, Belgium
| | - Gregor Verhoef
- Laboratory for Experimental Hematology, KU Leuven, Leuven, Belgium
- Department of Hematology, University Hospitals Leuven, Leuven, Belgium
| | - Lucienne Michaux
- Center for Human Genetics, KU Leuven, Leuven, Belgium
- Center for Human Genetics, University Hospitals Leuven, Leuven, Belgium
| | - Carlos Graux
- Mont-Godinne University Hospital, Yvoir, Belgium
| | - Iwona Wlodarska
- Center for Human Genetics, KU Leuven, Leuven, Belgium
- Center for Human Genetics, University Hospitals Leuven, Leuven, Belgium
| | - Philippe Gaulard
- Département de Pathologie, Groupe Hospitalier Henri Mondor, AP-HP, Créteil, France
- INSERM U955 and Université Paris-Est, Créteil, France
| | - Laurence de Leval
- Institute of Pathology, Department of Laboratory Medicine and Pathology, Lausanne University Hospital and Lausanne University, Lausanne, Switzerland
| | - Thomas Tousseyn
- Translational Cell & Tissue Research, KU Leuven, Leuven, Belgium
- Department of Pathology, University Hospitals Leuven, Leuven, Belgium
| | - Jan Cools
- Center for Cancer Biology, VIB, Leuven, Belgium.
- Center for Human Genetics, KU Leuven, Leuven, Belgium.
| | - Daan Dierickx
- Laboratory for Experimental Hematology, KU Leuven, Leuven, Belgium.
- Department of Hematology, University Hospitals Leuven, Leuven, Belgium.
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19
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Lenaerts L, Brison N, Maggen C, Vancoillie L, Che H, Vandenberghe P, Dierickx D, Michaux L, Dewaele B, Neven P, Floris G, Tousseyn T, Lannoo L, Jatsenko T, Bempt IV, Van Calsteren K, Vandecaveye V, Dehaspe L, Devriendt K, Legius E, Bogaert KVD, Vermeesch JR, Amant F. Comprehensive genome-wide analysis of routine non-invasive test data allows cancer prediction: A single-center retrospective analysis of over 85,000 pregnancies. EClinicalMedicine 2021; 35:100856. [PMID: 34036251 PMCID: PMC8138727 DOI: 10.1016/j.eclinm.2021.100856] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 03/19/2021] [Accepted: 04/01/2021] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Implausible false positive results in non-invasive prenatal testing (NIPT) have been occasionally associated with the detection of occult maternal malignancies. Hence, there is a need for approaches allowing accurate prediction of whether the NIPT result is pointing to an underlying malignancy, as well as for organized programs ensuring efficient downstream clinical management of these cases. METHODS Using a data set of 88,294 NIPT performed at University Hospital Leuven (Belgium) between November 2013 and March 2020, we retrospectively evaluated the positive predictive value (PPV) of our NIPT approach for cancer detection. In this approach, whole-genome cell-free DNA (cfDNA) data from NIPT were scrutinized for the presence of (sub)chromosomal copy number alterations (CNAs) predictive for a malignancy, using an unbiased NIPT analysis pipeline coined GIPSeq. For suspected cases, the presence of a maternal cancer was evaluated via subsequent multidisciplinary clinical follow-up examinations. The cancer-specificity of the identified CNAs in cfDNA was assessed through genetic analyses of a tumor biopsy. FINDINGS Fifteen women without a cancer history were identified with a GIPSeq result suggestive of a malignant process. Their cfDNA profiles showed either genome-wide aberrations or a single trisomy 8. Upon clinical examinations, a solid or hematological cancer was identified in 4 and 7 cases, respectively. Three women were identified as having a clonal mosaicism. For one case no underlying condition was found. These numbers add to a PPV of 73%. Based on this experience, we presented a multidisciplinary care path for efficient clinical management of these cases. INTERPRETATION The presented approach for analysing NIPT results has a high PPV, yet unknown sensitivity, for detecting asymptomatic malignancies upon routine NIPT. Given the complexity of diagnosing a pregnant woman with cancer, clinical follow-up should occur in a well-designed multidisciplinary setting, such as via the care model that we presented here. FUNDING This work was supported by Research Foundation Flanders and KU Leuven funding.
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Affiliation(s)
| | - Nathalie Brison
- Center for Human Genetics, University Hospitals Leuven, Herestraat 49, Leuven, Belgium
| | - Charlotte Maggen
- Department of Oncology, KU Leuven, Herestraat 49, Leuven, Belgium
| | - Leen Vancoillie
- Center for Human Genetics, University Hospitals Leuven, Herestraat 49, Leuven, Belgium
| | - Huiwen Che
- Department of Human Genetics, KU Leuven, Herestraat 49, Leuven, Belgium
| | - Peter Vandenberghe
- Department of Human Genetics, KU Leuven, Herestraat 49, Leuven, Belgium
- Hematology, University Hospitals Leuven, Herestraat 49, Leuven, Belgium
| | - Daan Dierickx
- Department of Oncology, KU Leuven, Herestraat 49, Leuven, Belgium
- Hematology, University Hospitals Leuven, Herestraat 49, Leuven, Belgium
| | - Lucienne Michaux
- Center for Human Genetics, University Hospitals Leuven, Herestraat 49, Leuven, Belgium
- Department of Human Genetics, KU Leuven, Herestraat 49, Leuven, Belgium
| | - Barbara Dewaele
- Center for Human Genetics, University Hospitals Leuven, Herestraat 49, Leuven, Belgium
| | - Patrick Neven
- Department of Oncology, KU Leuven, Herestraat 49, Leuven, Belgium
- Gynaecology and Obstetrics, University Hospitals Leuven, Herestraat 49, Leuven, Belgium
| | - Giuseppe Floris
- Pathology, University Hospitals Leuven, Herestraat 49, Leuven, Belgium
- Department of Imaging & Pathology, KU Leuven, Herestraat 49, Leuven, Belgium
| | - Thomas Tousseyn
- Pathology, University Hospitals Leuven, Herestraat 49, Leuven, Belgium
- Department of Imaging & Pathology, KU Leuven, Herestraat 49, Leuven, Belgium
| | - Lore Lannoo
- Gynaecology and Obstetrics, University Hospitals Leuven, Herestraat 49, Leuven, Belgium
- Department of Department of Development and Regeneration, KU Leuven, Herestraat 49, Leuven, Belgium
| | - Tatjana Jatsenko
- Department of Human Genetics, KU Leuven, Herestraat 49, Leuven, Belgium
| | - Isabelle Vanden Bempt
- Center for Human Genetics, University Hospitals Leuven, Herestraat 49, Leuven, Belgium
- Department of Human Genetics, KU Leuven, Herestraat 49, Leuven, Belgium
| | - Kristel Van Calsteren
- Gynaecology and Obstetrics, University Hospitals Leuven, Herestraat 49, Leuven, Belgium
- Department of Department of Development and Regeneration, KU Leuven, Herestraat 49, Leuven, Belgium
| | - Vincent Vandecaveye
- Radiology, University Hospitals Leuven, Herestraat 49, Leuven, Belgium
- Department of Imaging & Pathology, KU Leuven, Herestraat 49, Leuven, Belgium
| | - Luc Dehaspe
- Genomics Core facility, KU Leuven, Herestraat 49, Leuven, Belgium
| | - Koenraad Devriendt
- Center for Human Genetics, University Hospitals Leuven, Herestraat 49, Leuven, Belgium
- Department of Human Genetics, KU Leuven, Herestraat 49, Leuven, Belgium
| | - Eric Legius
- Center for Human Genetics, University Hospitals Leuven, Herestraat 49, Leuven, Belgium
- Department of Human Genetics, KU Leuven, Herestraat 49, Leuven, Belgium
| | - Kris Van Den Bogaert
- Center for Human Genetics, University Hospitals Leuven, Herestraat 49, Leuven, Belgium
- Department of Human Genetics, KU Leuven, Herestraat 49, Leuven, Belgium
| | - Joris Robert Vermeesch
- Center for Human Genetics, University Hospitals Leuven, Herestraat 49, Leuven, Belgium
- Department of Human Genetics, KU Leuven, Herestraat 49, Leuven, Belgium
- Genomics Core facility, KU Leuven, Herestraat 49, Leuven, Belgium
- Corresponding authors.
| | - Frédéric Amant
- Department of Oncology, KU Leuven, Herestraat 49, Leuven, Belgium
- Gynaecology and Obstetrics, University Hospitals Leuven, Herestraat 49, Leuven, Belgium
- Academic Medical Centers Amsterdam-University of Amsterdam and The Netherlands Cancer Institute-Antoni van Leeuwenhoek, Amsterdam, Netherlands
- Corresponding authors.
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20
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Rengifo LY, Smits S, Buedts L, Delforge M, Dehaspe L, Tousseyn T, Boeckx N, Lehnert S, Michaux L, Vermeesch JR, Vandenberghe P, Dewaele B. Ultra-low coverage whole genome sequencing of ccfDNA in multiple myeloma: A tool for laboratory routine? Cancer Treat Res Commun 2021; 28:100380. [PMID: 33962213 DOI: 10.1016/j.ctarc.2021.100380] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 02/15/2021] [Accepted: 04/19/2021] [Indexed: 10/21/2022]
Abstract
Multiple myeloma (MM), is a heterogeneous disease in which chromosomal abnormalities are important for prognostic risk stratification. Cytogenetic profiling with FISH on plasma cells from bone marrow samples (BM-PCs) is the current gold standard, but variable infiltration of plasma cells or failed aspiration can hamper this process. Ultra-low coverage sequencing (ULCS) of circulating cell-free DNA (ccfDNA) may offer a minimally invasive alternative for the work-up of these cases. We compared ULCS, aCGH and FISH on selected BM-PCs in a routine setting with ULCS of ccfDNA for the detection of somatic copy number aberrations (CNAs) in MM. METHODS Purified CD138+ BM-PCs of 23 MM patients at initiation of their treatment were subjected to aCGH, FISH and ULCS. Paired samples of peripheral blood-ccfDNA obtained at diagnosis were analyzed by ULCS and compared to the results found in BM-PCs. RESULTS Using ULCS of ccfDNA, cytogenetic markers were identified in 18 out of 23 patients; five cases could not be analyzed due to low (≤3%) tumor fraction (TF). High similarity between CNA profiles of BM-PCs and ccfDNA was found. Moreover, 78% of the ccfDNA profiles resulted in the same risk classification as the routine FISH and/or BM-PCs ULCS and aCGH. Chromothripsis was detected in five patients; these had the highest TF values (range 7.1% to 42%) in our series and their profiles showed other high-risk anomalies. CONCLUSION This proof-of-principle study indicates that ULCS of ccfDNA can reveal CNAs in MM and should be explored further as a cost-efficient alternative, especially in cases where BM-PC purification fails.
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Affiliation(s)
| | - Sanne Smits
- Department of Human Genetics, KU Leuven, Leuven, Belgium
| | | | - Michel Delforge
- Department of Hematology, University Hospitals Leuven, Leuven, Belgium
| | - Luc Dehaspe
- Center for Human Genetics, University Hospitals Leuven, Leuven, Belgium
| | - Thomas Tousseyn
- Laboratory for Translational Cell and Tissue Research, Department of Imaging and Pathology, KU Leuven, Leuven, Belgium
| | - Nancy Boeckx
- Laboratory Medicine, University Hospitals Leuven, Leuven, Belgium; Department of Oncology, KU Leuven, Leuven, Belgium
| | | | - Lucienne Michaux
- Center for Human Genetics, University Hospitals Leuven, Leuven, Belgium
| | | | - Peter Vandenberghe
- Department of Human Genetics, KU Leuven, Leuven, Belgium; Department of Hematology, University Hospitals Leuven, Leuven, Belgium
| | - Barbara Dewaele
- Center for Human Genetics, University Hospitals Leuven, Leuven, Belgium.
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21
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Peeters M, Geusens J, Van der Cruyssen F, Michaux L, de Leval L, Tousseyn T, Vandenberghe P, Politis C. Case Report: Spontaneous Remission of an Infraorbital Follicular B-Cell Lymphoma: Case Report and Review of the Literature. Pathol Oncol Res 2021; 27:642433. [PMID: 34257608 PMCID: PMC8262163 DOI: 10.3389/pore.2021.642433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 03/01/2021] [Indexed: 11/21/2022]
Abstract
Non-Hodgkin lymphomas comprise a heterogeneous group of malignancies, with a wide scope of clinical, radiological and histological presentations. In this paper, a case is presented of a 59-year-old white male with an infraorbital follicular B-cell lymphoma, which appeared as a painless mass in the left cheek. The lymphoma achieved spontaneous remission five and a half months after his diagnostic incision biopsy. The literature is reviewed, focusing on this rare site of presentation and spontaneous remission. In literature, only four cases have been reported with a follicular B-cell lymphoma of the cheek or infraorbital region, and only 26 cases of spontaneous remission of an extracranial non-Hodgkin lymphoma in the head and neck region have been described. To the authors’ best knowledge, this is the first time spontaneous remission of an infraorbital follicular lymphoma could be observed. The nature of the processes inducing spontaneous remission remains obscure. It is important to recognize this phenomenon as this might prevent unnecessary treatment.
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Affiliation(s)
- Maxime Peeters
- Department of Oral and Maxillofacial Surgery, University Hospitals Leuven, Leuven, Belgium
| | - Joris Geusens
- Department of Oral and Maxillofacial Surgery, University Hospitals Leuven, Leuven, Belgium
| | - Fréderic Van der Cruyssen
- Department of Oral and Maxillofacial Surgery, University Hospitals Leuven, Leuven, Belgium.,OMFS-IMPATH Research Group, Department of Imaging and Pathology, Faculty of Medicine, Catholic University Leuven, Leuven, Belgium
| | - Lucienne Michaux
- Department of Human Genetics, University Hospitals Leuven, Leuven, Belgium
| | - Laurence de Leval
- Department of Pathology, Lausanne University Hospital (CHUV) and Lausanne University, Lausanne, Switzerland
| | - Thomas Tousseyn
- Department of Pathology, University Hospitals Leuven, Leuven, Belgium
| | | | - Constantinus Politis
- Department of Oral and Maxillofacial Surgery, University Hospitals Leuven, Leuven, Belgium.,OMFS-IMPATH Research Group, Department of Imaging and Pathology, Faculty of Medicine, Catholic University Leuven, Leuven, Belgium
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22
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Bos S, Daniëls L, Michaux L, Bempt IV, Vermeer S, Woei-A-Jin S, Schöffski P, Weynand B, Sciot R, Declercq S, Van Raemdonck D, Ceulemans L, Dupont L, Verleden G, Vos R. An Unusual Course of Donor-Transmitted Angiosarcoma after Lung Transplantation. J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.2044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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23
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Wouters Y, Nevejan L, Louwagie A, Devos H, Dewaele B, Selleslag D, Michaux L. Efficacy of ruxolitinib in B-lymphoblastic leukaemia with the PCM1-JAK2 fusion gene. Br J Haematol 2021; 192:e112-e115. [PMID: 33502001 DOI: 10.1111/bjh.17340] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 12/29/2020] [Indexed: 12/20/2022]
Affiliation(s)
- Yannick Wouters
- Department of Laboratory Medicine, Sint-Franciscus Hospital, Heusden-Zolder, Belgium.,Department of Laboratory Medicine, University Hospitals Leuven, Leuven, Belgium
| | - Louis Nevejan
- Department of Laboratory Medicine, AZ Sint-Jan Hospital Brugge-Oostende, Bruges, Belgium
| | - Annelies Louwagie
- Department of Laboratory Medicine, University Hospitals Leuven, Leuven, Belgium
| | - Helena Devos
- Department of Laboratory Medicine, AZ Sint-Jan Hospital Brugge-Oostende, Bruges, Belgium
| | - Barbara Dewaele
- Center for Human Genetics, University Hospitals Leuven and KU Leuven, Leuven, Belgium
| | - Dominik Selleslag
- Department of Hematology, AZ Sint-Jan Hospital Brugge-Oostende, Bruges, Belgium
| | - Lucienne Michaux
- Center for Human Genetics, University Hospitals Leuven and KU Leuven, Leuven, Belgium
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24
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Gailllard B, Cornillet-Lefebvre P, Le QH, Maloum K, Pannetier M, Lecoq-Lafon C, Grange B, Jondreville L, Michaux L, Nadal N, Ittel A, Luquet I, Struski S, Lefebvre C, Gaillard JB, Lafage-Pochitaloff M, Balducci E, Penther D, Barin C, Collonge-Rame MA, Jimenez-Poquet M, Richebourg S, Lemaire P, Defasque S, Radford-Weiss I, Bidet A, Susin SA, Nguyen-Khac F, Chapiro E. Clinical and biological features of B-cell neoplasms with CDK6 translocations: an association with a subgroup of splenic marginal zone lymphomas displaying frequent CD5 expression, prolymphocytic cells, and TP53 abnormalities. Br J Haematol 2020; 193:72-82. [PMID: 33314017 DOI: 10.1111/bjh.17141] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 09/04/2020] [Accepted: 09/09/2020] [Indexed: 01/16/2023]
Abstract
A translocation involving the cyclin-dependent kinase 6 (CDK6) gene [t(CDK6)] is a rare but recurrent abnormality in B-cell neoplasms. To further characterise this aberration, we studied 57 cases; the largest series reported to date. Fluorescence in situ hybridisation analysis confirmed the involvement of CDK6 in all cases, including t(2;7)(p11;q21) immunoglobulin kappa locus (IGK)/CDK6 (n = 51), t(7;14)(q21;q32) CDK6/immunoglobulin heavy locus (IGH) (n = 2) and the previously undescribed t(7;14)(q21;q11) CDK6/T-cell receptor alpha locus (TRA)/T-cell receptor delta locus (TRD) (n = 4). In total, 10 patients were diagnosed with chronic lymphocytic leukaemia, monoclonal B-cell lymphocytosis or small lymphocytic lymphoma, and 47 had small B-cell lymphoma (SmBL) including 36 cases of marginal zone lymphoma (MZL; 34 splenic MZLs, one nodal MZL and one bronchus-associated lymphoid tissue lymphoma). In all, 18 of the 26 cytologically reviewed cases of MZL (69%) had an atypical aspect with prolymphocytic cells. Among the 47 patients with MZL/SmBL, CD5 expression was found in 26 (55%) and the tumour protein p53 (TP53) deletion in 22 (47%). The TP53 gene was mutated in 10/30 (33%); the 7q deletion was detected in only one case, and no Notch receptor 2 (NOTCH2) mutations were found. Immunoglobulin heavy-chain variable-region (IGHV) locus sequencing revealed that none harboured an IGHV1-02*04 gene. Overall survival was 82% at 10 years and not influenced by TP53 aberration. Our present findings suggest that most t(CDK6)+ neoplasms correspond to a particular subgroup of indolent marginal zone B-cell lymphomas with distinctive features.
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Affiliation(s)
| | | | - Quoc-Hung Le
- Service d'Hématologie Clinique, Hôpital Robert Debré, Reims, France
| | - Karim Maloum
- Service d'Hématologie Biologique, Hôpital Pitié-Salpêtrière, Assistance Publique - Hôpitaux de Paris (APHP), Paris, France
| | - Mélanie Pannetier
- Laboratoire d'Hématologie, Centre Hospitalo-Universitaire, Rennes, France
| | | | - Béatrice Grange
- Service d'Hématologie Biologique, Hospices Civils de Lyon, Lyon, France
| | - Ludovic Jondreville
- Centre de Recherche des Cordeliers, INSERM UMRS_1138, Cell Death and Drug Resistance in Lymphoproliferative Disorders Team, Paris, France
| | - Lucienne Michaux
- Center for Human Genetics, University Hospitals Leuven, Leuven, Belgium
| | - Nathalie Nadal
- Service de génétique chromosomique et moléculaire, CHU Dijon, France
| | - Antoine Ittel
- Laboratoire de Cytogénétique Hématologique, CHU de Strasbourg, Strasbourg, France
| | - Isabelle Luquet
- Laboratoire d'Hématologie, Institut Universitaire du Cancer de Toulouse, Toulouse, France
| | - Stéphanie Struski
- Laboratoire d'Hématologie, Institut Universitaire du Cancer de Toulouse, Toulouse, France
| | | | | | - Marina Lafage-Pochitaloff
- Laboratoire de Cytogénétique Onco-Hématologique, Hôpital de la Timone, AP-HM, Aix-Marseille Université, Marseille, France
| | - Estelle Balducci
- Laboratoire d'Hématologie, Hôpital Paul Brousse, APHP, Villejuif, France
| | - Dominique Penther
- Laboratoire de Génétique Oncologique, CLCC Henri Becquerel and INSERM U1245, Rouen, France
| | - Carole Barin
- Laboratoire de Cytogénétique hématologique, Service de Génétique, CHRU Bretonneau, Tours, France
| | | | | | - Steven Richebourg
- Laboratoire de Cytogénétique Onco-Hématologique, CHU de Québec - Université Laval, Québec, Canada
| | - Pierre Lemaire
- Laboratoire d'Hématologie, Hôpital Saint-Louis, APHP, Paris, France
| | - Sabine Defasque
- Secteur cytogénétique hématologique, Laboratoire CERBA, Saint-Ouen l'Aumône, France
| | | | - Audrey Bidet
- Laboratoire d'Hématologie, CHU Bordeaux-Haut Lévêque, Bordeaux, France
| | - Santos A Susin
- Centre de Recherche des Cordeliers, INSERM UMRS_1138, Cell Death and Drug Resistance in Lymphoproliferative Disorders Team, Paris, France.,Sorbonne Université, Paris, France
| | - Florence Nguyen-Khac
- Service d'Hématologie Biologique, Hôpital Pitié-Salpêtrière, Assistance Publique - Hôpitaux de Paris (APHP), Paris, France.,Centre de Recherche des Cordeliers, INSERM UMRS_1138, Cell Death and Drug Resistance in Lymphoproliferative Disorders Team, Paris, France.,Sorbonne Université, Paris, France
| | - Elise Chapiro
- Service d'Hématologie Biologique, Hôpital Pitié-Salpêtrière, Assistance Publique - Hôpitaux de Paris (APHP), Paris, France.,Centre de Recherche des Cordeliers, INSERM UMRS_1138, Cell Death and Drug Resistance in Lymphoproliferative Disorders Team, Paris, France.,Sorbonne Université, Paris, France
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25
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Vandewalle V, Essaghir A, Bollaert E, Lenglez S, Graux C, Schoemans H, Saussoy P, Michaux L, Valk PJM, Demoulin JB, Havelange V. miR-15a-5p and miR-21-5p contribute to chemoresistance in cytogenetically normal acute myeloid leukaemia by targeting PDCD4, ARL2 and BTG2. J Cell Mol Med 2020; 25:575-585. [PMID: 33270982 PMCID: PMC7810923 DOI: 10.1111/jcmm.16110] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 10/23/2020] [Accepted: 10/26/2020] [Indexed: 12/15/2022] Open
Abstract
Cytarabine and daunorubicin are old drugs commonly used in the treatment of acute myeloid leukaemia (AML). Refractory or relapsed disease because of chemotherapy resistance is a major issue. microRNAs (miRNAs) were incriminated in resistance. This study aimed to identify miRNAs involved in chemoresistance in AML patients and to define their target genes. We focused on cytogenetically normal AML patients with wild‐type NPM1 without FLT3‐ITD as the treatment of this subset of patients with intermediate‐risk cytogenetics is not well established. We analysed baseline AML samples by small RNA sequencing and compared the profile of chemoresistant to chemosensitive AML patients. Among the miRNAs significantly overexpressed in chemoresistant patients, we revealed miR‐15a‐5p and miR‐21‐5p as miRNAs with a major role in chemoresistance in AML. We showed that miR‐15a‐5p and miR‐21‐5p overexpression decreased apoptosis induced by cytarabine and/or daunorubicin. PDCD4, ARL2 and BTG2 genes were found to be targeted by miR‐15a‐5p, as well as PDCD4 and BTG2 by miR‐21‐5p. Inhibition experiments of the three target genes reproduced the functional effect of both miRNAs on chemosensitivity. Our study demonstrates that miR‐15a‐5p and miR‐21‐5p are overexpressed in a subgroup of chemoresistant AML patients. Both miRNAs induce chemoresistance by targeting three pro‐apoptotic genes PDCD4, ARL2 and BTG2.
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Affiliation(s)
- Virginie Vandewalle
- Department of Hematology, Cliniques Universitaires Saint-Luc, Brussels, Belgium.,Experimental Medicine Unit, de Duve Institute, Université Catholique de Louvain, Brussels, Belgium
| | - Ahmed Essaghir
- Experimental Medicine Unit, de Duve Institute, Université Catholique de Louvain, Brussels, Belgium
| | - Emeline Bollaert
- Experimental Medicine Unit, de Duve Institute, Université Catholique de Louvain, Brussels, Belgium
| | - Sandrine Lenglez
- Experimental Medicine Unit, de Duve Institute, Université Catholique de Louvain, Brussels, Belgium
| | - Carlos Graux
- Department of Hematology, CHU UCL Namur (Godinne site), Yvoir, Belgium
| | - Hélène Schoemans
- Department of Hematology, University Hospitals Leuven and KU Leuven, Leuven, Belgium
| | - Pascale Saussoy
- Laboratory of Hematology, Cliniques Universitaires Saint Luc, Brussels, Belgium
| | - Lucienne Michaux
- Center for Human Genetics, University Hospitals Leuven and KU Leuven, Leuven, Belgium
| | - Peter J M Valk
- Department of Hematology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Jean-Baptiste Demoulin
- Experimental Medicine Unit, de Duve Institute, Université Catholique de Louvain, Brussels, Belgium
| | - Violaine Havelange
- Department of Hematology, Cliniques Universitaires Saint-Luc, Brussels, Belgium.,Experimental Medicine Unit, de Duve Institute, Université Catholique de Louvain, Brussels, Belgium
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Delire B, Komuta M, Michaux L, Lanthier N. A rare cause of high liver stiffness. Acta Gastroenterol Belg 2020; 83:675-676. [PMID: 33321033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Affiliation(s)
- B Delire
- Service d'Hépato-gastroentérologie, Cliniques universitaires Saint-Luc, UCLouvain, Brussels, Belgium
| | - M Komuta
- Service d'Anatomie Pathologique, Cliniques universitaires Saint-Luc, UCLouvain, Brussels, Belgium
| | - L Michaux
- Service d'Hématologie, Cliniques universitaires Saint-Luc, UCLouvain, Brussels, Belgium
| | - N Lanthier
- Service d'Hépato-gastroentérologie, Cliniques universitaires Saint-Luc, UCLouvain, Brussels, Belgium
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27
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Rengifo LY, Michaux L, Maertens J, Tousseyn T, Lenaerts L, Vermeesch JR, Vandenberghe P, Dewaele B. Noninvasive prenatal testing detected acute myeloid leukemia in paucisymptomatic pregnant patient. Clin Case Rep 2020; 8:1924-1927. [PMID: 33088520 PMCID: PMC7562837 DOI: 10.1002/ccr3.3027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 05/18/2020] [Accepted: 05/23/2020] [Indexed: 12/03/2022] Open
Abstract
To the authors' best knowledge, this is the first report of acute myeloid leukemia (AML) detected by noninvasive prenatal testing. This was an aggressive case that otherwise would have been difficult to characterize due to disadvantages of "gold‐standard" techniques.
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Affiliation(s)
| | - Lucienne Michaux
- Center for Human Genetics University Hospitals Leuven Leuven Belgium
| | - Johan Maertens
- Department of Microbiology and Immunology KU Leuven Leuven Belgium.,Department of Hematology University Hospitals Leuven Leuven Belgium
| | - Thomas Tousseyn
- Department of Pathology University Hospitals Leuven Leuven Belgium
| | | | | | - Peter Vandenberghe
- Center for Human Genetics University Hospitals Leuven Leuven Belgium.,Department of Hematology University Hospitals Leuven Leuven Belgium
| | - Barbara Dewaele
- Center for Human Genetics University Hospitals Leuven Leuven Belgium
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28
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Buedts L, Smits S, Ameye G, Lehnert S, Ding J, Delforge M, Vermeesch J, Boeckx N, Tousseyn T, Michaux L, Vandenberghe P, Dewaele B. Ultra-low depth sequencing of plasma cell DNA for the detection of copy number aberrations in multiple myeloma. Genes Chromosomes Cancer 2020; 59:465-471. [PMID: 32259320 DOI: 10.1002/gcc.22848] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2019] [Revised: 03/22/2020] [Accepted: 04/01/2020] [Indexed: 12/31/2022] Open
Abstract
Cytogenetic abnormalities are powerful prognostic factors in multiple myeloma (MM) and are routinely analyzed by FISH on bone marrow (BM) plasma cells (PC). Although considered the gold standard, FISH experiments can be laborious and expensive. Therefore, array-CGH (aCGH) has been introduced as an alternative approach for detecting copy number aberrations (CNA), reducing the number of FISH experiments per case and yielding genome-wide information. Currently, next generation sequencing (NGS) technologies offer new perspectives for the diagnostic workup of malignant disorders. In this study, we examined ultra-low depth whole genome sequencing (LDS) as a valid alternative for aCGH for the detection of CNA in BM PC in MM. To this end, BM aspirates obtained in a diagnostic setting from 20 MM cases were analyzed. CD138+ cell-sorted samples were subjected to FISH analysis. DNA was extracted for subsequent aCGH and LDS analysis. CNA were detected by aCGH and LDS in all but one case. Importantly, all CNA identified by parallel first generation aCGH analysis were also detected by LDS, along with six additional CNA in five cases. One of these additional aberrations was in a region of prognostic importance in MM and was confirmed using FISH. However, risk stratification in these particular cases was unaffected. Thus, a perfectly concordant prognostication between array-CGH and LDS was observed. This validates LDS as a novel and cost-efficient tool for the detection of CNA in MM.
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Affiliation(s)
| | - Sanne Smits
- Center for Human Genetics, KU Leuven, Leuven, Belgium
| | - Geneviève Ameye
- Center for Human Genetics, University Hospitals Leuven, Leuven, Belgium
| | | | - Jia Ding
- Genomics Core, KU Leuven, Leuven, Belgium
| | - Michel Delforge
- Department of Hematology, University Hospitals Leuven, Leuven, Belgium
| | - Joris Vermeesch
- Center for Human Genetics, University Hospitals Leuven, Leuven, Belgium.,Genomics Core, KU Leuven, Leuven, Belgium
| | - Nancy Boeckx
- Laboratory Medicine, University Hospitals Leuven, Leuven, Belgium.,Department of Oncology, KU Leuven, Leuven, Belgium
| | - Thomas Tousseyn
- Department of Pathology, University Hospitals Leuven, Leuven, Belgium
| | - Lucienne Michaux
- Center for Human Genetics, KU Leuven, Leuven, Belgium.,Center for Human Genetics, University Hospitals Leuven, Leuven, Belgium
| | - Peter Vandenberghe
- Center for Human Genetics, KU Leuven, Leuven, Belgium.,Department of Hematology, University Hospitals Leuven, Leuven, Belgium
| | - Barbara Dewaele
- Center for Human Genetics, KU Leuven, Leuven, Belgium.,Center for Human Genetics, University Hospitals Leuven, Leuven, Belgium
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29
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Ossenkoppele GJ, Breems DA, Stuessi G, van Norden Y, Bargetzi M, Biemond BJ, A von dem Borne P, Chalandon Y, Cloos J, Deeren D, Fehr M, Gjertsen B, Graux C, Huls G, Janssen JJJW, Jaspers A, Jongen-Lavrencic M, de Jongh E, Klein SK, van der Klift M, van Marwijk Kooy M, Maertens J, Michaux L, van der Poel MWM, van Rhenen A, Tick L, Valk P, Vekemans MC, van der Velden WJFM, de Weerdt O, Pabst T, Manz M, Löwenberg B. Lenalidomide added to standard intensive treatment for older patients with AML and high-risk MDS. Leukemia 2020; 34:1751-1759. [PMID: 32020044 DOI: 10.1038/s41375-020-0725-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 12/24/2019] [Accepted: 01/22/2020] [Indexed: 11/09/2022]
Abstract
More effective treatment modalities are urgently needed in patients with acute myeloid leukemia (AML) of older age. We hypothesized that adding lenalidomide to intensive standard chemotherapy might improve their outcome. After establishing a safe lenalidomide, dose elderly patients with AML were randomly assigned in this randomized Phase 2 study (n = 222) to receive standard chemotherapy ("3 + 7") with or without lenalidomide at a dose of 20 mg/day 1-21. In the second cycle, patients received cytarabine 1000 mg/m2 twice daily on days 1-6 with or without lenalidomide (20 mg/day 1-21). The CR/CRi rates in the two arms were not different (69 vs. 66%). Event-free survival (EFS) at 36 months was 19% for the standard arm versus 21% for the lenalidomide arm and overall survival (OS) 35% vs. 30%, respectively. The frequencies and grade of adverse events were not significantly different between the treatment arms. Cardiovascular toxicities were rare and equally distributed between the arms. The results of the present study show that the addition of lenalidomide to standard remission induction chemotherapy does not improve the therapeutic outcome of older AML patients. This trial is registered as number NTR2294 in The NederlandsTrial Register (www.trialregister.nl).
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Affiliation(s)
- G J Ossenkoppele
- Amsterdam University Medical Cente, location VUMC, Amsterdam, Netherlands.
| | | | - G Stuessi
- Bellinzona-IOSI, Bellinzona, Switzerland
| | - Y van Norden
- HOVON Data Center, Erasmus MC- Department of Hematology, Rotterdam, The Netherlands
| | - M Bargetzi
- Aarau- Kantonsspital, Aarau, Switzerland
| | - B J Biemond
- Amsterdam University Medical Center, location AMC, Amsterdam, Netherlands
| | | | - Y Chalandon
- University Hospital and University of Geneva, Genève, Switzerland
| | - J Cloos
- Amsterdam University Medical Cente, location VUMC, Amsterdam, Netherlands
| | - D Deeren
- Roeselare-AZ Delta, Roeselare, Belgium
| | - M Fehr
- St Gallen-Kantonnsspital, St. Gallen, Switzerland
| | - B Gjertsen
- Haukeland University Hospital, Bergen (N), Norway
| | - C Graux
- Yvoir-MontGodinne, Yvoir, Belgium
| | - G Huls
- University Medical Center, Groningen, Netherlands
| | - J J J W Janssen
- Amsterdam University Medical Cente, location VUMC, Amsterdam, Netherlands
| | - A Jaspers
- Hôpital Citadelle, Liège (B), Belgium
| | | | | | - S K Klein
- Meander Medical Center, Amersfoort, Netherlands
| | | | | | - J Maertens
- Hospital Gasthuisberg, Leuven (B), Belgium
| | - L Michaux
- Center for Human Genetics, KU Leuven and University Hospitals Leuven, Leuven, Belgium
| | | | | | - L Tick
- MaximaMC Eindhoven, Eindhoven, Netherlands
| | - P Valk
- Hôpital Citadelle, Liège (B), Belgium
| | | | | | - O de Weerdt
- St Antonius Hospital, Nieuwegein, Netherlands
| | - T Pabst
- Department of Oncology, University Hospital, Inselspital and University of Bern, Bern, Switzerland
| | - M Manz
- University Hospital, Zurich, Switzerland
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30
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Naesens L, Devos H, Nollet F, Michaux L, Selleslag D. Mediastinal Myeloid Sarcoma with TP53 Mutation Preceding Acute Myeloid Leukemia with a PICALM-MLLT10 Fusion Gene. Acta Haematol 2018; 140:97-104. [PMID: 30227397 DOI: 10.1159/000491596] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 06/22/2018] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Myeloid sarcoma (MS), previously known as granulocytic sarcoma or chloroma, is a rare neoplastic condition defined as a tumor mass consisting of myeloblasts or immature myeloid cells occurring at an extramedullary site. Clinical presentation is diverse and determined by a tumor mass effect or local organ dysfunction. CASE REPORT We report the case of a 25-year-old previously healthy male with rapidly progressive shortness of breath. A chest CT scan demonstrated a heterogenous anterosuperior mediastinal mass with pleural and pericardial invasion. A diagnosis of MS with both myeloid and lymphoid characteristics was made by pathologic, morphologic, and immunophenotypic investigation. Next generation analysis revealed a pathogenic TP53 mutation (c.1035_1036insCT, p.Glu346Leufs*25). After 4 cycles of chemotherapy only a partial metabolic response and tumor size reduction was obtained. A pretransplant bone marrow biopsy revealed the progression of disease to acute myeloid leukemia. Cytogenetic analysis demonstrated a t(10; 11)(p12;q21). Fluorescence in situ hybridization confirmed the presence of a PICALM-MLLT10 fusion gene. CONCLUSION MS with a mediastinal localization is rare and often misdiagnosed as malignant lymphoma. Acute leukemia harboring a PICALM-MLLT10 fusion gene is characterized by a mixed T cell and myeloid phenotype. The rearrangement is a rare recurrent translocation associated with specific clinical features, as illustrated in this case report.
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MESH Headings
- Adult
- Bone Marrow/pathology
- Cytogenetic Analysis
- Humans
- In Situ Hybridization, Fluorescence
- Karyotyping
- Leukemia, Myeloid, Acute/diagnosis
- Leukemia, Myeloid, Acute/etiology
- Leukemia, Myeloid, Acute/genetics
- Male
- Mutation
- Oncogene Proteins, Fusion/genetics
- Positron Emission Tomography Computed Tomography
- Sarcoma, Myeloid/complications
- Sarcoma, Myeloid/diagnosis
- Sarcoma, Myeloid/genetics
- Translocation, Genetic
- Tumor Suppressor Protein p53/genetics
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Affiliation(s)
- Leslie Naesens
- Department of Internal Medicine, University Hospital Ghent, Ghent, Belgium
| | - Helena Devos
- Department of Laboratory Medicine, AZ Sint-Jan Brugge-Oostende, Bruges, Belgium
| | - Friedel Nollet
- Department of Laboratory Medicine, AZ Sint-Jan Brugge-Oostende, Bruges, Belgium
| | - Lucienne Michaux
- Centre for Human Genetics, University Hospital Leuven, Leuven, Belgium
| | - Dominik Selleslag
- Department of Hematology, AZ Sint-Jan Brugge-Oostende, Bruges, Belgium
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31
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Claerhout H, Lierman E, Michaux L, Verhoef G, Boeckx N. A monocentric retrospective study of 138 therapy-related myeloid neoplasms. Ann Hematol 2018; 97:2319-2324. [DOI: 10.1007/s00277-018-3462-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Accepted: 07/25/2018] [Indexed: 01/08/2023]
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32
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De Roeck L, Michaux L, Debackere K, Lierman E, Vandenberghe P, Devos T. Coexisting driver mutations in MPN: clinical and molecular characteristics of a series of 11 patients. ACTA ACUST UNITED AC 2018; 23:785-792. [PMID: 29993347 DOI: 10.1080/10245332.2018.1498182] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
OBJECTIVES CML, PV, ET and PMF are so called classical MPN with distinct clinical phenotypes. The discovery of the BCR-ABL1 translocation and mutations in driver genes JAK2, MPL and CALR has provided novel insights in their pathogenesis. While these mutations are thought to be mutually exclusive, rare cases of MPN with coexisting driver mutations have been reported. However, little is known about the clinical, biological and molecular characteristics of these patients and the interaction of the neoplastic clones. METHODS We retrospectively studied 11 MPN patients with coexisting driver mutations (JAK2 V617F + BCR-ABL1: n = 8; CALR type 2 + BCR-ABL1: n = 1; JAK2 V617F + MPL W515: n = 1; JAK2 V617F + CALR type 1: n = 1). To assess possible associated molecular aberrations, we analysed DNA of six patients using NGS. RESULTS In four CML patients, decreasing BCR-ABL1 transcript levels with increasing JAK2 V617F allele burden under TKI were observed. This strongly suggests that the coexistence of driver mutations originates from two different clones growing independently. Additional somatic mutations were detected in 5 out of 6 (83%) patients affecting 4 different genes, confirming the heterogeneity of this study cohort. Suboptimal response to TKI was observed with a higher frequency (4/8 patients) than reported in conventional series of CML and the overall tolerance of treatment with hydroxyurea and/or imatinib in our series was poor. CONCLUSION Given the emergence of NGS in clinical practice, more similar cases will be identified in the coming years. The optimal treatment strategy for this rare group of patients is uncertain and toxicity of combination treatment may have to be considered.
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Affiliation(s)
- L De Roeck
- a Department of Radiotherapy-Oncology , University Hospitals Leuven , Leuven , Belgium
| | - L Michaux
- b Center for Human Genetics , University Hospitals Leuven , Leuven , Belgium
| | - K Debackere
- c Department of Internal Medicine , University Hospitals Leuven , Leuven , Belgium
| | - E Lierman
- b Center for Human Genetics , University Hospitals Leuven , Leuven , Belgium
| | - P Vandenberghe
- b Center for Human Genetics , University Hospitals Leuven , Leuven , Belgium.,d Department of Hematology , University Hospitals Leuven , Leuven , Belgium
| | - T Devos
- d Department of Hematology , University Hospitals Leuven , Leuven , Belgium.,e Laboratory of Experimental Transplantation, Department of Microbiology and Immunology, KU Leuven , University Hospitals Leuven , Leuven , Belgium
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33
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Chapiro E, Lesty C, Gabillaud C, Durot E, Bouzy S, Armand M, Le Garff-Tavernier M, Bougacha N, Struski S, Bidet A, Laharanne E, Barin C, Veronese L, Prié N, Eclache V, Gaillard B, Michaux L, Lefebvre C, Gaillard JB, Terré C, Penther D, Bastard C, Nadal N, Fert-Ferrer S, Auger N, Godon C, Sutton L, Tournilhac O, Susin SA, Nguyen-Khac F. "Double-hit" chronic lymphocytic leukemia: An aggressive subgroup with 17p deletion and 8q24 gain. Am J Hematol 2018; 93:375-382. [PMID: 29194741 DOI: 10.1002/ajh.24990] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Revised: 11/21/2017] [Accepted: 11/27/2017] [Indexed: 01/21/2023]
Abstract
Chronic lymphocytic leukemia (CLL) with 17p deletion (17p-) is associated with a lack of response to standard treatment and thus the worst possible clinical outcome. Various chromosomal abnormalities (including unbalanced translocations, deletions, ring chromosomes and isochromosomes) result in the loss of 17p and one copy of the TP53 gene. The objective of the present study was to determine whether the type of chromosomal abnormality leading to 17p- and the additional aberrations influenced the prognosis in a series of 195 patients with 17p-CLL. Loss of 17p resulted primarily from an unbalanced translocation (70%) with several chromosome partners (the most frequent being chromosome 18q), followed by deletion 17p (23%), monosomy 17 (8%), isochromosome 17q [i(17q)] (5%) and a ring chromosome 17 (2%). In a univariate analysis, monosomy 17, a highly complex karyotype (≥5 abnormalities), and 8q24 gain were associated with poor treatment-free survival, and i(17q) (P = .04), unbalanced translocations (P = .03) and 8q24 gain (P = .001) were significantly associated with poor overall survival. In a multivariate analysis, 8q24 gain remained a significant predictor of poor overall survival. We conclude that 17p deletion and 8q24 gain have a synergistic impact on outcome, and so patients with this "double-hit" CLL have a particularly poor prognosis. Systematic, targeting screening for 8q24 gain should therefore be considered in cases of 17p- CLL.
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Affiliation(s)
- Elise Chapiro
- INSERM UMR_S 1138, Centre de Recherche des Cordeliers; Paris France
- Sorbonne Universités, UPMC Paris 6; Paris France
- Service d'Hématologie Biologique, Hôpital Pitié-Salpêtrière, AP-HP; Paris France
| | - Claude Lesty
- Sorbonne Universités, UPMC Paris 6; Paris France
- Service d'Hématologie Biologique, Hôpital Pitié-Salpêtrière, AP-HP; Paris France
| | - Clémentine Gabillaud
- Service d'Hématologie Biologique, Hôpital Pitié-Salpêtrière, AP-HP; Paris France
| | - Eric Durot
- Service d'Hématologie Clinique, CHU Reims; Reims France
| | - Simon Bouzy
- Service d'Hématologie Biologique, Hôpital Pitié-Salpêtrière, AP-HP; Paris France
| | - Marine Armand
- INSERM UMR_S 1138, Centre de Recherche des Cordeliers; Paris France
- Sorbonne Universités, UPMC Paris 6; Paris France
- Service d'Hématologie Biologique, Hôpital Pitié-Salpêtrière, AP-HP; Paris France
| | - Magali Le Garff-Tavernier
- INSERM UMR_S 1138, Centre de Recherche des Cordeliers; Paris France
- Service d'Hématologie Biologique, Hôpital Pitié-Salpêtrière, AP-HP; Paris France
| | - Nadia Bougacha
- INSERM UMR_S 1138, Centre de Recherche des Cordeliers; Paris France
- Sorbonne Universités, UPMC Paris 6; Paris France
| | - Stéphanie Struski
- Laboratoire de Cytogénétique, Institut Universitaire du Cancer de Toulouse; Toulouse France
| | - Audrey Bidet
- CHU Bordeaux, Service d'Hématologie biologique, F-33000; Bordeaux France
| | - Elodie Laharanne
- CHU Bordeaux, Service d'Hématologie biologique, F-33000; Bordeaux France
| | - Carole Barin
- Unité de Génétique, CHU Bretonneau; Tours France
| | - Lauren Veronese
- Laboratoire de Cytogénétique, CHU Estaing; Clermont-Ferrand France
| | - Nolwen Prié
- Laboratoire de Cytogénétique, CHU Estaing; Clermont-Ferrand France
| | - Virginie Eclache
- Laboratoire d'Hématologie, Hôpital Avicenne, AP-HP; Bobigny France
| | | | | | - Christine Lefebvre
- Laboratoire de Cytogénétique Onco-hématologique, CHU Grenoble; Grenoble France
| | | | - Christine Terré
- Centre Hospitalier de Versailles; Laboratoire de Cytogénétique; Versailles France
| | - Dominique Penther
- Laboratoire de Génétique Oncologique, centre de lutte contre le cancer Henri Becquerel; Rouen France
| | - Christian Bastard
- Laboratoire de Génétique Oncologique, centre de lutte contre le cancer Henri Becquerel; Rouen France
| | - Nathalie Nadal
- Service de génétique chromosomique et moléculaire, CHU Dijon; Dijon France
| | - Sandra Fert-Ferrer
- Centre Hospitalier Métropole Savoie; Laboratoire de Génétique Chromosomique; France, Chambéry
| | - Nathalie Auger
- Laboratoire de Cytogénétique, Institut Gustave Roussy; Villejuif France
| | - Catherine Godon
- Laboratoire de Cytogénétique Hématologique, CHU Nantes; Nantes France
| | - Laurent Sutton
- Centre Hospitalier Métropole Savoie; Service d'Hématologie Clinique; Chambéry France
| | | | - Santos A. Susin
- INSERM UMR_S 1138, Centre de Recherche des Cordeliers; Paris France
- Sorbonne Universités, UPMC Paris 6; Paris France
| | - Florence Nguyen-Khac
- INSERM UMR_S 1138, Centre de Recherche des Cordeliers; Paris France
- Sorbonne Universités, UPMC Paris 6; Paris France
- Service d'Hématologie Biologique, Hôpital Pitié-Salpêtrière, AP-HP; Paris France
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34
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van der Krogt JA, Bempt MV, Ferreiro JF, Mentens N, Jacobs K, Pluys U, Doms K, Geerdens E, Uyttebroeck A, Pierre P, Michaux L, Devos T, Vandenberghe P, Tousseyn T, Cools J, Wlodarska I. Anaplastic lymphoma kinase-positive anaplastic large cell lymphoma with the variant RNF213-, ATIC- and TPM3-ALK fusions is characterized by copy number gain of the rearranged ALK gene. Haematologica 2017; 102:1605-1616. [PMID: 28659337 PMCID: PMC5685221 DOI: 10.3324/haematol.2016.146571] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Accepted: 06/26/2017] [Indexed: 12/11/2022] Open
Abstract
Anaplastic lymphoma kinase (ALK)-positive anaplastic large cell lymphoma is characterized by 2p23/ALK aberrations, including the classic t(2;5)(p23;q35)/NPM1-ALK rearrangement present in ~80% of cases and several variant t(2p23/ALK) occurring in the remaining cases. The ALK fusion partners play a key role in the constitutive activation of the chimeric protein and its subcellular localization. Using various molecular technologies, we have characterized ALK fusions in eight recently diagnosed anaplastic large cell lymphoma cases with cytoplasmic-only ALK expression. The identified partner genes included EEF1G (one case), RNF213/ALO17 (one case), ATIC (four cases) and TPM3 (two cases). Notably, all cases showed copy number gain of the rearranged ALK gene, which is never observed in NPM1-ALK-positive lymphomas. We hypothesized that this could be due to lower expression levels and/or lower oncogenic potential of the variant ALK fusions. Indeed, all partner genes, except EEF1G, showed lower expression in normal and malignant T cells, in comparison with NPM1. In addition, we investigated the transformation potential of endogenous Npm1-Alk and Atic-Alk fusions generated by clustered regularly interspaced short palindromic repeats/Cas9 genome editing in Ba/F3 cells. We found that Npm1-Alk has a stronger transformation potential than Atic-Alk, and we observed a subclonal gain of Atic-Alk after a longer culture period, which was not observed for Npm1-Alk. Taken together, our data illustrate that lymphomas driven by the variant ATIC-ALK fusion (and likely by RNF213-ALK and TPM3-ALK), but not the classic NPM1-ALK, require an increased dosage of the ALK hybrid gene to compensate for the relatively low and insufficient expression and signaling properties of the chimeric gene.
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Affiliation(s)
| | - Marlies Vanden Bempt
- Center for Human Genetics, KU Leuven, Belgium.,Center for Cancer Biology, VIB, Leuven, Belgium
| | | | - Nicole Mentens
- Center for Human Genetics, KU Leuven, Belgium.,Center for Cancer Biology, VIB, Leuven, Belgium
| | - Kris Jacobs
- Center for Human Genetics, KU Leuven, Belgium.,Center for Cancer Biology, VIB, Leuven, Belgium
| | | | | | - Ellen Geerdens
- Center for Human Genetics, KU Leuven, Belgium.,Center for Cancer Biology, VIB, Leuven, Belgium
| | | | - Pascal Pierre
- Department of Hematology, Cliniques Sud Luxembourg, Arlon, Belgium
| | | | - Timothy Devos
- Department of Hematology, University Hospitals Leuven, Belgium
| | - Peter Vandenberghe
- Center for Human Genetics, KU Leuven, Belgium.,Department of Hematology, University Hospitals Leuven, Belgium
| | - Thomas Tousseyn
- Translational Cell and Tissue Research KU Leuven, Belgium.,Department of Pathology, University Hospitals Leuven, Belgium
| | - Jan Cools
- Center for Human Genetics, KU Leuven, Belgium.,Center for Cancer Biology, VIB, Leuven, Belgium
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35
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Hofman IJF, Patchett S, van Duin M, Geerdens E, Verbeeck J, Michaux L, Delforge M, Sonneveld P, Johnson AW, De Keersmaecker K. Low frequency mutations in ribosomal proteins RPL10 and RPL5 in multiple myeloma. Haematologica 2017; 102:e317-e320. [PMID: 28428269 DOI: 10.3324/haematol.2016.162198] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Isabel J F Hofman
- Department of Oncology, KU Leuven - University of Leuven, LKI - Leuven Cancer Institute, Belgium
| | - Stephanie Patchett
- Department of Molecular Biosciences, The University of Texas at Austin, TX, USA
| | - Mark van Duin
- Department of Hematology, Erasmus MC Cancer Institute, Rotterdam, the Netherlands
| | - Ellen Geerdens
- Center for Cancer Biology, VIB, Leuven, Belgium.,Center for Human Genetics, KU Leuven - University of Leuven, LKI - Leuven Cancer Institute, Belgium
| | - Jelle Verbeeck
- Department of Oncology, KU Leuven - University of Leuven, LKI - Leuven Cancer Institute, Belgium
| | - Lucienne Michaux
- Center for Human Genetics, KU Leuven - University Hospitals Leuven, Belgium
| | - Michel Delforge
- LKI - Leuven Cancer Institute, Department of Development and Regeneration, KU Leuven - University Hospitals Leuven, Belgium
| | - Pieter Sonneveld
- Department of Hematology, Erasmus MC Cancer Institute, Rotterdam, the Netherlands
| | - Arlen W Johnson
- Department of Molecular Biosciences, The University of Texas at Austin, TX, USA
| | - Kim De Keersmaecker
- Department of Oncology, KU Leuven - University of Leuven, LKI - Leuven Cancer Institute, Belgium
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36
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Poiré X, Labopin M, Maertens J, Yakoub-Agha I, Blaise D, Ifrah N, Socié G, Gedde-Dhal T, Schaap N, Cornelissen JJ, Vigouroux S, Sanz J, Michaux L, Esteve J, Mohty M, Nagler A. Allogeneic stem cell transplantation in adult patients with acute myeloid leukaemia and 17p abnormalities in first complete remission: a study from the Acute Leukemia Working Party (ALWP) of the European Society for Blood and Marrow Transplantation (EBMT). J Hematol Oncol 2017; 10:20. [PMID: 28100265 PMCID: PMC5241968 DOI: 10.1186/s13045-017-0393-3] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2016] [Accepted: 01/03/2017] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Acute myeloid leukaemia (AML) with 17p abnormalities (abn(17p)) carries a very poor prognosis due to high refractoriness to conventional chemotherapy, and allogeneic stem cell transplantation (allo-SCT) appears as the only potential curative option. METHODS To address outcomes after allo-SCT in patients with abn(17p), we retrospectively analysed de novo or secondary AML undergoing SCT between 2000 and 2013 from the EBMT registry. RESULTS One hundred thirty-nine patients with confirmed abn(17p) have been selected. At the time of transplant, one hundred twenty-five were in first remission (CR1). Median age was 54 years old. Abn(17p) was associated with a monosomal karyotype in 83% of patients, complex karyotype in 91%, monosomy 5 or 5q deletion (-5/5q-) in 55%, monosomy 7 (-7) in 39% and both -5/5q and -7 in 27%. Seventy-three patients (59%) had a reduced-intensity conditioning regimen. The 2-year overall survival (OS) and leukaemia-free survival (LFS) were 28 and 24%, respectively. The 2-year non-relapse mortality (NRM) was 15%, and 2-year relapse incidence (RI) was 61%. The cumulative incidence of grade II to IV acute graft-versus-host disease (GvHD) was 24% and that of chronic GvHD was 21%. In multivariate analysis, the presence of a -5/5q- in addition to abn(17p) was significantly and independently associated with worse OS, LFS and higher RI. Age and donor types did not correlate with outcome. Conditioning intensity was not statistically associated with OS, LFS and NRM when adjusted for patients' age. CONCLUSIONS In contrast to the dismal prognosis reported for AML patients harbouring abn(17p) undergoing conventional chemotherapy, allogeneic SCT provides responses in about 25% of those patients transplanted in CR1.
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Affiliation(s)
- Xavier Poiré
- Section of Hematology, Department of Medicine, Cliniques Universitaires Saint-Luc, 10, avenue Hippocrate, 1200, Brussels, Belgium.
| | - Myriam Labopin
- Acute Leukemia Working Party of the EBMT office, Paris, France.,Service d'Hématologie clinique, Hôpital Saint-Antoine, AP-HP, Université Pierre et Marie Curie, INSERM UMRs U938, Paris, France
| | - Johan Maertens
- Department of Hematology, University Hospital Gasthuisberg, Leuven, Belgium
| | | | - Didier Blaise
- Programme de Transplantation et Thérapie Cellulaire, Centre de Recherche en Cancérologie de Marseille, Institut Paoli Calmettes, Marseille, France
| | | | - Gérard Socié
- Department of Hematology, Hôpital Saint-Louis, Paris, France
| | | | - Nicolaas Schaap
- Department of Hematology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Jan J Cornelissen
- Daniel den Hoed Cancer Centre, Erasmus Medical Center, Rotterdam, The Netherlands
| | | | - Jaime Sanz
- Servicio de Hematologia, Hospital Universitario La Fe, Valencia, Spain
| | - Lucienne Michaux
- Center for Human Genetics, KU Leuven and University Hospitals, Leuven, Belgium
| | - Jordi Esteve
- Hematology department, IDIBAPS, Hospital Clinic, Barcelona, Spain
| | - Mohamad Mohty
- Acute Leukemia Working Party of the EBMT office, Paris, France.,Service d'Hématologie clinique, Hôpital Saint-Antoine, AP-HP, Université Pierre et Marie Curie, INSERM UMRs U938, Paris, France
| | - Arnon Nagler
- Acute Leukemia Working Party of the EBMT office, Paris, France.,Chaim Sheba Medical Center, Tel-Hashomer, Israel
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37
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Hofman IJF, van Duin M, De Bruyne E, Fancello L, Mulligan G, Geerdens E, Garelli E, Mancini C, Lemmens H, Delforge M, Vandenberghe P, Wlodarska I, Aspesi A, Michaux L, Vanderkerken K, Sonneveld P, De Keersmaecker K. RPL5 on 1p22.1 is recurrently deleted in multiple myeloma and its expression is linked to bortezomib response. Leukemia 2016; 31:1706-1714. [PMID: 27909306 PMCID: PMC5380219 DOI: 10.1038/leu.2016.370] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Revised: 11/03/2016] [Accepted: 11/28/2016] [Indexed: 12/31/2022]
Abstract
Chromosomal region 1p22 is deleted in ≥20% of multiple myeloma (MM) patients, suggesting the presence of an unidentified tumor suppressor. Using high-resolution genomic profiling, we delimit a 58 kb minimal deleted region (MDR) on 1p22.1 encompassing two genes: ectopic viral integration site 5 (EVI5) and ribosomal protein L5 (RPL5). Low mRNA expression of EVI5 and RPL5 was associated with worse survival in diagnostic cases. Patients with 1p22 deletion had lower mRNA expression of EVI5 and RPL5, however, 1p22 deletion status is a bad predictor of RPL5 expression in some cases, suggesting that other mechanisms downregulate RPL5 expression. Interestingly, RPL5 but not EVI5 mRNA levels were significantly lower in relapsed patients responding to bortezomib and; both in newly diagnosed and relapsed patients, bortezomib treatment could overcome their bad prognosis by raising their progression-free survival to equal that of patients with high RPL5 expression. In conclusion, our genetic data restrict the MDR on 1p22 to EVI5 and RPL5 and although the role of these genes in promoting MM progression remains to be determined, we identify RPL5 mRNA expression as a biomarker for initial response to bortezomib in relapsed patients and subsequent survival benefit after long-term treatment in newly diagnosed and relapsed patients.
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Affiliation(s)
- I J F Hofman
- KU Leuven - University of Leuven, Department of Oncology, LKI - Leuven Cancer Institute, Leuven, Belgium
| | - M van Duin
- Department of Hematology, Erasmus Medical Center, Rotterdam, The Netherlands
| | - E De Bruyne
- Department of Hematology and Immunology, Myeloma Center Brussels, Vrije Universiteit Brussels (VUB), Brussels, Belgium
| | - L Fancello
- KU Leuven - University of Leuven, Department of Oncology, LKI - Leuven Cancer Institute, Leuven, Belgium
| | - G Mulligan
- Takeda Pharmaceuticals International Co., Cambridge, MA, USA
| | - E Geerdens
- Center for Human Genetics, KU Leuven - University of Leuven, Center for Human Genetics, LKI - Leuven Cancer Institute, Leuven, Belgium.,Center for the Biology of Disease, VIB Center for the Biology of Disease, Leuven, Belgium
| | - E Garelli
- Dipartimento Scienze della Sanità Pubblica e Pediatriche, Univ.Torino, Torino, Italy
| | - C Mancini
- Dipartimento di Scienze Mediche, Univ.Torino, Torino, Italy
| | - H Lemmens
- Center for Human Genetics, University Hospitals Leuven, Leuven, Belgium
| | - M Delforge
- Department of Hematology, University Hospital Leuven, Leuven, Belgium
| | - P Vandenberghe
- Center for Human Genetics, University Hospitals Leuven, Leuven, Belgium
| | - I Wlodarska
- Center for Human Genetics, KU Leuven - University of Leuven, Center for Human Genetics, LKI - Leuven Cancer Institute, Leuven, Belgium
| | - A Aspesi
- Department of Health Sciences, Universita' del Piemonte Orientale, Novara, Italy
| | - L Michaux
- Center for Human Genetics, University Hospitals Leuven, Leuven, Belgium
| | - K Vanderkerken
- Department of Hematology and Immunology, Myeloma Center Brussels, Vrije Universiteit Brussels (VUB), Brussels, Belgium
| | - P Sonneveld
- Department of Hematology, Erasmus Medical Center, Rotterdam, The Netherlands
| | - K De Keersmaecker
- KU Leuven - University of Leuven, Department of Oncology, LKI - Leuven Cancer Institute, Leuven, Belgium
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38
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Havelange V, Pepermans X, Ameye G, Théate I, Callet-Bauchu E, Barin C, Penther D, Lippert E, Michaux L, Mugneret F, Dastugue N, Raphaël M, Vikkula M, Poirel HA. Genetic differences between paediatric and adult Burkitt lymphomas. Br J Haematol 2016; 173:137-44. [DOI: 10.1111/bjh.13925] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Accepted: 12/09/2015] [Indexed: 01/31/2023]
Affiliation(s)
- Violaine Havelange
- Department of Haematology; Cliniques universitaires Saint-Luc - Université catholique de Louvain; Brussels Belgium
| | - Xavier Pepermans
- Centre for Human Genetics; Cliniques universitaires Saint-Luc - Université catholique de Louvain; Brussels Belgium
| | - Geneviève Ameye
- Centre for Human Genetics; Cliniques universitaires Saint-Luc - Université catholique de Louvain; Brussels Belgium
| | - Ivan Théate
- Department of Pathology; Cliniques universitaires Saint-Luc, Université catholique de Louvain; Brussels Belgium
| | | | - Carole Barin
- Laboratoire de Cytogénétique; CHU Bretonneau; Tours France
| | - Dominique Penther
- Laboratoire de génétique oncologique; Centre Henri Becquerel; Rouen France
| | - Eric Lippert
- Laboratoire d'hématologie; CHU Bordeaux; Pessac France
| | - Lucienne Michaux
- Centrum voor menselijke erfelijkheid; Katholieke Universiteit Leuven; Leuven Belgium
| | | | | | - Martine Raphaël
- Anatomie et cytologie pathologiques; CHU Bicêtre -Assistance Publique-Hôpitaux de Paris; INSERM U802; Université Paris-Sud 11; Le Kremlin-Bicêtre France
| | - Miikka Vikkula
- Human Molecular Genetics (GEHU); de Duve Institute - Université catholique de Louvain; Brussels Belgium
| | - Hélène A. Poirel
- Department of Haematology; Cliniques universitaires Saint-Luc - Université catholique de Louvain; Brussels Belgium
- Human Molecular Genetics (GEHU); de Duve Institute - Université catholique de Louvain; Brussels Belgium
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39
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Van Roosbroeck K, Ferreiro JF, Tousseyn T, van der Krogt JA, Michaux L, Pienkowska-Grela B, Theate I, De Paepe P, Dierickx D, Doyen C, Put N, Cools J, Vandenberghe P, Wlodarska I. Genomic alterations of the JAK2 and PDL loci occur in a broad spectrum of lymphoid malignancies. Genes Chromosomes Cancer 2016; 55:428-41. [PMID: 26850007 DOI: 10.1002/gcc.22345] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Revised: 12/22/2015] [Accepted: 12/22/2015] [Indexed: 12/18/2022] Open
Abstract
The recurrent 9p24.1 aberrations in lymphoid malignancies potentially involving four cancer-related and druggable genes (JAK2, CD274/PDL1, PDCD1LG2/PDL2, and KDM4C/JMJD2Cl) are incompletely characterized. To gain more insight into the anatomy of these abnormalities, at first we studied 9p24.1 alterations in 18 leukemia/lymphoma cases using cytogenetic and molecular techniques. The aberrations comprised structural (nine cases) and numerical (nine cases) alterations. The former lesions were heterogeneous but shared a common breakpoint region of 200 kb downstream of JAK2. The rearrangements predominantly targeted the PDL locus. We have identified five potential partner genes of PDL1/2: PHACTR4 (1p34), N4BP2 (4p14), EEF1A1 (6q13), JAK2 (9p24.1), and IGL (22q11). Interestingly, the cryptic JAK2-PDL1 rearrangement was generated by a microdeletion spanning the 3'JAK2-5'PDL1 region. JAK2 was additionally involved in a cytogenetically cryptic IGH-mediated t(9;14)(p24.1;q32) found in two patients. This rare but likely underestimated rearrangement highlights the essential role of JAK2 in B-cell neoplasms. Cases with amplification of 9p24.1 were diagnosed as primary mediastinal B-cell lymphoma (five cases) and T-cell lymphoma (four cases). The smallest amplified 9p24.1 region was restricted to the JAK2-PDL1/2-RANBP6 interval. In the next step, we screened 200 cases of classical Hodgkin lymphoma by interphase FISH and identified PDL1/2 rearrangement (CIITA- and IGH-negative) in four cases (2%), what is a novel finding. Forty (25%) cases revealed high level amplification of 9p24.1, including four cases with a selective amplification of PDL1/2. Altogether, the majority of 9p24.1 rearrangements occurring in lymphoid malignancies seem to target the programmed death-1 ligands, what potentiates the therapeutic activity of PD-1 blockade in these tumors. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Katrien Van Roosbroeck
- Center for Human Genetics, KU Leuven, Leuven, Belgium.,Center for the Biology of Disease, VIB, Leuven, Belgium
| | | | - Thomas Tousseyn
- Department of Pathology UZ Leuven, Translational Cell and Tissue Research, K.U. Leuven, Leuven, Belgium
| | | | | | - Barbara Pienkowska-Grela
- Department of Pathology and Laboratory Diagnostic, Maria Sklodowska-Curie Memorial Cancer Centre and Institute, Warsaw, Poland
| | - Ivan Theate
- Department of Pathology, Cliniques Universitaires Saint-Luc, Université Catholique De Louvain, Brussels, Belgium
| | | | - Daan Dierickx
- Department of Hematology, UZ Leuven, Leuven, Belgium
| | - Chantal Doyen
- Department of Hematology, Mont-Godinne University Hospital, Yvoir, Belgium
| | - Natalie Put
- Center for Human Genetics, KU Leuven, Leuven, Belgium
| | - Jan Cools
- Center for Human Genetics, KU Leuven, Leuven, Belgium.,Center for the Biology of Disease, VIB, Leuven, Belgium
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Poiré X, Labopin M, Cornelissen JJ, Volin L, Richard Espiga C, Veelken JH, Milpied N, Cahn JY, Yacoub-Agha I, van Imhoff GW, Michallet M, Michaux L, Nagler A, Mohty M. Outcome of conditioning intensity in acute myeloid leukemia with monosomal karyotype in patients over 45 year-old: A study from the acute leukemia working party (ALWP) of the European group of blood and marrow transplantation (EBMT). Am J Hematol 2015; 90:719-24. [PMID: 26010466 DOI: 10.1002/ajh.24069] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2015] [Revised: 05/08/2015] [Accepted: 05/15/2015] [Indexed: 11/10/2022]
Abstract
Acute myeloid leukemia with monosomal karyotype (MK AML) carries a very poor prognosis, even after allogeneic stem cell transplantation (SCT). However, SCT remains the only curative option in this high-risk population. Because myeloablative conditioning regimen (MAC) is associated with less relapse, we hypothesized that more intensive conditioning regimen might be beneficial for MK AML patients. We reviewed 303 patients over age 45 diagnosed with either de novo or secondary MK AML. One hundred and five patients received a MAC and 198 a reduced-intensity conditioning (RIC). The median age at SCT was 57-year-old, significantly lower in the MAC (53-year-old) than in the RIC group (59-year-old). The median follow-up was 42 months (range, 3 - 156 months). The 3-year overall survival (OS), leukemia-free survival (LFS), and relapse rate (RR) were not significantly different between both groups with overall values of 34%, 29%, and 51%, respectively. On the contrary, the 3-year nonrelapse mortality (NRM) was significantly higher in MAC recipients (28%) compared with RIC patients (16%, P = 0.004). The incidence of Grades II to IV acute graft-versus-host disease (GvHD) was significantly higher after a MAC (30.5%) than after a RIC (19.3%, P = 0.02). That of chronic GvHD was comparable between both groups (35%) and did not impact on LFS. Interestingly, within our MK AML cohort, hypodiploidy was significantly associated with worse outcomes. Due to reduced toxicity and comparable OS, LFS, and RR, RIC appears as a good transplant option in the very high-risk population, including older patients, diagnosed with MK AML.
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Affiliation(s)
- Xavier Poiré
- Section of Hematology, Cliniques Universitaires Saint-Luc; Brussels Belgium
| | | | - Jan J. Cornelissen
- Section of Hematology, Erasmus MC-Daniel Den Hoed Cancer Centre; Rotterdam The Netherlands
| | - Liisa Volin
- Section of Hematology, Helsinki University Central Hospital; Helsinki Sweden
| | | | - J. Hendrik Veelken
- Section of Hematology, Leiden University Hospital; Leiden The Netherlands
| | - Noël Milpied
- Section of Hematology, CHU Bordeaux; Pessac France
| | - Jean-Yves Cahn
- Section of Hematology, Hôpital a Michallon; Grenoble France
| | | | - Gustaaf W. van Imhoff
- Section of Hematology, University Medical Center Groningen; Groningen The Netherlands
| | | | - Lucienne Michaux
- Section of Hematology, Cliniques Universitaires Saint-Luc; Brussels Belgium
| | - Arnon Nagler
- Hematology Division, Chaim Sheba Medical Center; Tel Hashomer Israel
| | - Mohamad Mohty
- Section of Hematology, Hôpital Saint-Antoine; Paris France
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Biller P, Michaux L, Pauw LD, Camboni A, Mourad M, Kanaan N. Post-transplant lymphoproliferative disorder after kidney transplantation: time to adopt monitoring of Epstein-Barr virus? Acta Clin Belg 2015; 70:218-22. [PMID: 25541210 DOI: 10.1179/2295333714y.0000000112] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Although post-transplant lymphoproliferative disorder is a classical complication encountered after kidney transplantation, its diagnosis can still be challenging and its outcome life-threatening. Most cases are related to Epstein-Barr virus (EBV) infection and occur mainly in the first year post-transplant, favoured by the seronegative EBV status of the recipient transplanted with a kidney from a seropositive donor, and strong immunosuppression. We report the case of a young kidney-pancreas transplant recipient who developed post-transplant lymphoproliferative disorder (PTLD) early after transplantation, with a rapid fatal issue. We review the pathogenesis, clinical presentation, and management of PTLD with a focus on prevention.
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42
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Al Assaf C, Van Obbergh F, Billiet J, Lierman E, Devos T, Graux C, Hervent AS, Emmerechts J, Tousseyn T, De Paepe P, Papadopoulos P, Michaux L, Vandenberghe P. Analysis of phenotype and outcome in essential thrombocythemia with CALR or JAK2 mutations. Haematologica 2015; 100:893-7. [PMID: 25934766 DOI: 10.3324/haematol.2014.118299] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Accepted: 04/27/2015] [Indexed: 11/09/2022] Open
Abstract
The JAK2 V617F mutation, the thrombopoietin receptor MPL W515K/L mutation and calreticulin (CALR) mutations are mutually exclusive in essential thrombocythemia and support a novel molecular categorization of essential thrombocythemia. CALR mutations account for approximately 30% of cases of essential thrombocythemia. In a retrospective study, we examined the frequency of MPL and CALR mutations in JAK2 V617F-negative cases of essential thrombocythemia (n=103). In addition, we compared the clinical phenotype and outcome of CALR mutant cases of essential thrombocythemia with a cohort of JAK2 V617F-positive essential thrombocythemia (n=57). CALR-positive cases represented 63.7% of double-negative cases of essential thrombocythemia, and most carried CALR type 1 or type 2 indels. However, we also identified one patient who was positive for both the JAK2 V617F and the CALR mutations. This study revealed that CALR mutant essential thrombocythemia is associated with younger age, higher platelet counts, lower erythrocyte counts, leukocyte counts, hemoglobin, and hematocrit, and increased risk of progression to myelofibrosis in comparison with JAK2 V617F-positive essential thrombocythemia. Analysis of the CALR mutant group according to indel type showed that CALR type 1 deletion is strongly associated with male gender. CALR mutant patients had a better overall survival than JAK2 V617F-positive patients, in particular patients of age 60 years or younger. In conclusion, this study in a Belgian cohort of patients supports and extends the growing body of evidence that CALR mutant cases of essential thrombocythemia are phenotypically distinct from JAK2 V617F-positive cases, with regards to clinical and hematologic presentation as well as overall survival.
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Affiliation(s)
- Carla Al Assaf
- Center for Human Genetics, KU Leuven and University Hospitals Leuven, Belgium
| | | | | | - Els Lierman
- Center for Human Genetics, KU Leuven and University Hospitals Leuven, Belgium
| | - Timothy Devos
- Department of Hematology, University Hospitals Leuven, Belgium
| | - Carlos Graux
- Department of Hematology, Mont-Godinne University Hospital, Yvoir, Belgium
| | | | | | - Thomas Tousseyn
- Department of Pathology, University Hospitals Leuven, Belgium
| | | | - Petros Papadopoulos
- Center for Human Genetics, KU Leuven and University Hospitals Leuven, Belgium
| | - Lucienne Michaux
- Center for Human Genetics, KU Leuven and University Hospitals Leuven, Belgium
| | - Peter Vandenberghe
- Center for Human Genetics, KU Leuven and University Hospitals Leuven, Belgium Department of Hematology, University Hospitals Leuven, Belgium
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43
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Vekemans MC, Michaux L, Saussoy P, Van Den Neste E, Théate I, Ferrant A. Hepatosplenic γδ T-cell lymphoma after allogeneic bone marrow transplantation. Ann Hematol 2015; 94:1077-8. [PMID: 25634495 DOI: 10.1007/s00277-015-2299-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Accepted: 01/03/2015] [Indexed: 11/25/2022]
Affiliation(s)
- Marie-Christiane Vekemans
- Department of Hematology, Cliniques universitaires Saint-Luc, Université catholique de Louvain, 10 Avenue Hippocrate, 1200, Brussels, Belgium,
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44
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Katrincsakova B, Takeda H, Urbankova H, Michaux L, Jarosova M, Vandenberghe P, Georges M, Charlier C, Wlodarska I. Methylation analysis of the imprintedDLK1-GTL2domain supports the random parental origin of theIGH-involving del(14q) in B-cell malignancies. Epigenetics 2014; 4:469-75. [DOI: 10.4161/epi.4.7.9924] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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45
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Abstract
We report on a 75-year-old woman who presented with recurrent episodes of hypotension, anasarca, renal failure, hypoalbuminaemia without proteinuria, suggestive of systemic capillary leak syndrome (SCLS). Further investigations led to a diagnosis of diffuse large B-cell lymphoma. Secondary SCLS associated with non-Hodgkin lymphoma is reviewed.
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46
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Cosson A, Chapiro E, Belhouachi N, Cung HA, Keren B, Damm F, Algrin C, Lefebvre C, Fert-Ferrer S, Luquet I, Gachard N, Mugneret F, Terre C, Collonge-Rame MA, Michaux L, Rafdord-Weiss I, Talmant P, Veronese L, Nadal N, Struski S, Barin C, Helias C, Lafage M, Lippert E, Auger N, Eclache V, Roos-Weil D, Leblond V, Settegrana C, Maloum K, Davi F, Merle-Beral H, Lesty C, Nguyen-Khac F. 14q deletions are associated with trisomy 12, NOTCH1 mutations and unmutated IGHV genes in chronic lymphocytic leukemia and small lymphocytic lymphoma. Genes Chromosomes Cancer 2014; 53:657-66. [PMID: 24729385 DOI: 10.1002/gcc.22176] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Accepted: 04/01/2014] [Indexed: 01/21/2023] Open
Abstract
Deletions of the long arm of chromosome 14 [del(14q)] are rare but recurrently observed in mature B-cell neoplasms, particularly in chronic lymphocytic leukemia (CLL). To further characterize this aberration, we studied 81 cases with del(14q): 54 of CLL and 27 of small lymphocytic lymphoma (SLL), the largest reported series to date. Using karyotype and fluorescence in situ hybridization (FISH), the most frequent additional abnormality was trisomy 12 (tri12), observed in 28/79 (35%) cases, followed by del13q14 (12/79, 15%), delTP53 (11/80, 14%) delATM (5/79, 6%), and del6q21 (3/76, 4%). IGHV genes were unmutated in 41/53 (77%) patients, with a high frequency of IGHV1-69 (21/52, 40%). NOTCH1 gene was mutated in 14/45 (31%) patients. There was no significant difference in cytogenetic and molecular abnormalities between CLL and SLL. Investigations using FISH and SNP-array demonstrated the heterogeneous size of the 14q deletions. However, a group with the same del(14)(q24.1q32.33) was identified in 48% of cases. In this group, tri12 (P = 0.004) and NOTCH1 mutations (P = 0.02) were significantly more frequent than in the other patients. In CLL patients with del(14q), median treatment-free survival (TFS) was 27 months. In conclusion, del(14q) is associated with tri12 and with pejorative prognostic factors: unmutated IGHV genes (with over-representation of the IGHV1-69 repertoire), NOTCH1 mutations, and a short TFS.
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Affiliation(s)
- Adrien Cosson
- INSERM U872, Centre de Recherche des Cordeliers, Paris 6, France
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Vekemans MC, Michaux L, Van Den Neste E, Ferrant A. Long-term survival after allogeneic stem cell transplantation for advanced stage multiple myeloma. Br J Haematol 2014; 166:616-8. [PMID: 24697308 DOI: 10.1111/bjh.12881] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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48
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Nols N, Mounier N, Bouazza S, Lhommel R, Costantini S, Vander Borght T, Vekemans MC, Sonet A, Bosly A, Michaux L, André M, Van Den Neste E. Quantitative and qualitative analysis of metabolic response at interim positron emission tomography scan combined with International Prognostic Index is highly predictive of outcome in diffuse large B-cell lymphoma. Leuk Lymphoma 2013; 55:773-80. [PMID: 23927393 DOI: 10.3109/10428194.2013.831848] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The prognostic value of interim (18)fluorodeoxyglucose positron emission tomography (i-PET) was investigated in 73 patients (median age 60 years) with diffuse large B-cell lymphoma (DLBCL). i-PET was analyzed using the Deauville score (DS) and change in maximum standardized uptake value (ΔSUV(max)). Patients with a DS of 1-3 demonstrated a significantly (p < 0.0001) better outcome (median follow-up 2.4 years) than patients with a score of 4 or 5 in terms of event-free survival (EFS) (79% vs. 36%), progression-free survival (PFS) (84% vs. 47%) and overall survival (OS) (91% vs. 51%). EFS (73% vs. 42%), PFS (78% vs. 50%) and OS (88% vs. 56%) were also significantly (p = 0.023) different between patients with ΔSUV(max) > 66% or ≤ 66%. Patients (n = 33) combining a favorable age-adjusted International Prognostic Index (IPI) (0 or 1) and a negative i-PET either by DS or ΔSUV(max) criteria showed a particularly good outcome (EFS: 85%, PFS: 88%, OS: 94%). Overall, i-PET was highly and independently predictive of any outcome, and its negative predictive value was improved by combination with IPI.
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Affiliation(s)
- Nathalie Nols
- Services de Médecine Nucléaire et d'Hématologie , CHU Mont-Godinne, Yvoir , Belgium
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Rouhigharabaei L, Ferreiro JF, Put N, Michaux L, Tousseyn T, Lefebvre C, Gardiner A, De Kelver W, Demuynck H, Verschuere J, Théate I, Vicente C, Vandenberghe P, Cools J, Wlodarska I. BMI1, the polycomb-group gene, is recurrently targeted by genomic rearrangements in progressive B-cell leukemia/lymphoma. Genes Chromosomes Cancer 2013; 52:928-44. [PMID: 23873701 DOI: 10.1002/gcc.22088] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Accepted: 06/13/2013] [Indexed: 01/10/2023] Open
Abstract
BMI1, a Polycomb-group gene located at 10p12.2, is implicated in the pathogenesis of a variety of tumors. However, the genetic molecular mechanisms underlying its aberrant expression in cancer cells remain largely unknown. In this study, we show that BMI1 is recurrently targeted by chromosomal aberrations in B-cell leukemia/lymphoma. We identified a novel t(10;14)(p12;q32)/IGH-BMI1 rearrangement and its IGL variant in six cases of chronic lymphocytic leukemia (CLL) and found that these aberrations were consistently acquired at time of disease progression and high grade transformation of leukemia (Richter syndrome). The IG-BMI1 translocations were not associated with any particular molecular subtype of CLL and the leukemias were negative for common mutations of NOTCH1 and TP53, known to increase a risk of progression and transformation in CLL. In addition, using FISH and SNP array analysis, we identified a wide range of BMI1-involving 10p12 lesions in 17 cases of mantle cell lymphoma (MCL). These aberrations included various balanced and unbalanced structural abnormalities and very frequently but not exclusively, were associated with gain of the BMI1 locus and loss of the 10p terminal sequences. These findings point to genomic instability at the 10p region in MCL which likely promotes rearrangements and deregulation of BMI1. Our findings are in line with previously published observations correlating overexpression of BMI1 with tumor progression and chemoresistance. In summary, our study provides new insights into genetic molecular mechanisms underlying aberrant expression of BMI1 in lymphoma and documents its contribution in the pathogenesis of Richter syndrome and MCL.
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Havelange V, Ameye G, Théate I, Callet-Bauchu E, Mugneret F, Michaux L, Dastugue N, Penther D, Barin C, Collonge-Rame MA, Baranger L, Terré C, Nadal N, Lippert E, Laï JL, Cabrol C, Tigaud I, Herens C, Hagemeijer A, Raphael M, Libouton JM, Poirel HA. Patterns of genomic aberrations suggest that Burkitt lymphomas with complex karyotype are distinct from other aggressive B-cell lymphomas withMYCrearrangement. Genes Chromosomes Cancer 2012; 52:81-92. [DOI: 10.1002/gcc.22008] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2011] [Revised: 08/13/2012] [Accepted: 08/15/2012] [Indexed: 01/17/2023] Open
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