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Aubin L, Vilas Boas R, Daltro De Oliveira R, Le Brun V, Divoux M, Rey J, Mansier O, Ianotto JC, Pastoret C, Desmares A, Murati A, de Mas V, Tavitian S, Girodon F, Soret Dulphy J, Maslah N, Goncalves Monteiro V, Boyer F, Orvain C, Ranta D, Cayssials É, Le Clech L, Nicol C, Rottier C, Botin Lopez T, Castel B, Rispal P, Beziat G, Bescond C, Laribi K, Benajiba L, Ugo V, Lippert E, Cottin L, Luque Paz D. CALR-mutated patients with low allele burden represent a specific subtype of essential thrombocythemia: A study on behalf of FIM and GBMHM. Am J Hematol 2024; 99:1001-1004. [PMID: 38404143 DOI: 10.1002/ajh.27265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 02/08/2024] [Accepted: 02/13/2024] [Indexed: 02/27/2024]
Abstract
A low allele burden (i.e., <20%) of the CALR driver mutation is found in 10.8% of CALR-mutated MPNs, mostly in essential thrombocythemia, and correlates with a milder phenotype and a more indolent evolution compared to patients with an allele burden ≥20%.
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Affiliation(s)
- Laura Aubin
- Univ Angers, Nantes Université, CHU Angers, Inserm, CNRS, CRCI2NA, Angers, France
- Laboratoire d'Hématologie, CH St Malo, St Malo, France
- Laboratoire d'Hématologie, CHU Rennes, Rennes, France
| | | | | | | | - Marion Divoux
- Hématologie Clinique, CHU Nancy, Nancy, France
- Laboratoire d'Hématologie, CHU Nancy, Nancy, France
| | - Jérôme Rey
- Centre de Recherche en Cancérologie de Marseille (CRCM), Département d'Hématologie, Institut Paoli-Calmettes, CRCM, Inserm, Marseille, France
| | - Olivier Mansier
- Laboratoire d'Hématologie, CHU Bordeaux, Bordeaux, France
- Inserm U1034, Université de Bordeaux, Bordeaux, France
| | | | | | - Anne Desmares
- Laboratoire d'Hématologie, CHU Rennes, Rennes, France
| | - Anne Murati
- Centre de Recherche en Cancérologie de Marseille (CRCM), Département de Biopathologie et Département d'Oncologie Prédictive, Institut Paoli-Calmettes, Inserm, Marseille, France
| | - Véronique de Mas
- Laboratoire d'Hématologie, Institut Universitaire du Cancer de Toulouse Oncopole, CHU Toulouse, Toulouse, France
| | - Suzanne Tavitian
- Service d'Hématologie, Institut Universitaire du Cancer de Toulouse Oncopole, CHU Toulouse, Toulouse, France
| | | | - Juliette Soret Dulphy
- INSERM U944/CNRS UMR7212, Hôpital Saint Louis APHP, Université de Paris, Paris, France
| | - Nabih Maslah
- Laboratoire de Biologie Cellulaire, Université Paris Cité, APHP, Hôpital Saint-Louis, Paris, France
| | | | | | | | - Dana Ranta
- Hématologie Clinique, CHU Nancy, Nancy, France
| | - Émilie Cayssials
- Service d'Oncologie Hématologique et Thérapie Cellulaire, CHU de Poitiers, Poitiers, France
| | | | | | - Camille Rottier
- Laboratoire d'oncobiologie moléculaire, CHU Amiens-Picardie, Amiens, France
| | | | - Brice Castel
- Service de Médecine Interne, CH de Bigorre, Tarbes, France
| | | | | | | | - Kamel Laribi
- Hématologie Clinique, CH Le Mans, Le Mans, France
| | - Lina Benajiba
- INSERM U944/CNRS UMR7212, Hôpital Saint Louis APHP, Université de Paris, Paris, France
| | - Valérie Ugo
- Univ Angers, Nantes Université, CHU Angers, Inserm, CNRS, CRCI2NA, Angers, France
| | - Eric Lippert
- Laboratoire d'Hématologie, CHRU Brest, Brest, France
- INSERM, U1078, Université de Brest, Brest, France
| | - Laurane Cottin
- Univ Angers, Nantes Université, CHU Angers, Inserm, CNRS, CRCI2NA, Angers, France
| | - Damien Luque Paz
- Univ Angers, Nantes Université, CHU Angers, Inserm, CNRS, CRCI2NA, Angers, France
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Desmares A, Bouzy S, Thonier F, Goustille J, Llamas-Gutierrez F, Genevieve F, Cottin L, Baseggio L, Lemaire P, Lafon CL, Cornillet-Lefebvre P, Galoisy AC, Brouzes C, Rault E, Dindinaud E, Fleury C, Blanc-Jouvan F, Wuilleme S, Bardet V, Fest T, Lamy T, Roussel M, Pannetier M, Pastoret C. Hepatosplenic T-cell lymphoma displays an original oyster-shell cytological pattern and a distinct genomic profile from that of gamma-delta T-cell large granular lymphocytic leukemia. Haematologica 2024. [PMID: 38268478 DOI: 10.3324/haematol.2023.283856] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Indexed: 01/26/2024] Open
Abstract
Not available.
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Affiliation(s)
- Anne Desmares
- Centre Hospitalier Universitaire de Rennes, Laboratoire d'Hématologie, Rennes, France; Groupe Francophone d'Hématologie Cellulaire, Bron
| | - Simon Bouzy
- Groupe Francophone d'Hématologie Cellulaire, Bron, France; Centre Hospitalier Universitaire de Nantes, Laboratoire d'Hématologie, Nantes
| | | | - Julien Goustille
- Groupe Francophone d'Hématologie Cellulaire, Bron, France; Centre Hospitalier de Saint-Malo, Laboratoire de Biologie, Saint-Malo
| | | | - Franck Genevieve
- Groupe Francophone d'Hématologie Cellulaire, Bron, France; Centre Hospitalier Universitaire d'Angers, Laboratoire d'Hématologie, Angers
| | - Laurane Cottin
- Groupe Francophone d'Hématologie Cellulaire, Bron, France; Centre Hospitalier Universitaire d'Angers, Laboratoire d'Hématologie, Angers
| | - Lucile Baseggio
- Groupe Francophone d'Hématologie Cellulaire, Bron, France; Hospices Civils de Lyon - HCL, Laboratoire d'Hématologie, Bron
| | - Pierre Lemaire
- Groupe Francophone d'Hématologie Cellulaire, Bron, France; Hôpital Saint-Louis AP-HP, Laboratoire d'hématologie, Paris
| | - Carinne Lecoq Lafon
- Groupe Francophone d'Hématologie Cellulaire, Bron, France; Centre Hospitalier Universitaire de Reims, Laboratoire d'hématologie, Reims France
| | | | - Anne-Cécile Galoisy
- Groupe Francophone d'Hématologie Cellulaire, Bron, France; Centre Hospitalier Universitaire de Strasbourg, Laboratoire d'Hématologie, Strasbourg
| | - Chantal Brouzes
- Groupe Francophone d'Hématologie Cellulaire, Bron, France; Hôpital Necker AP-HP, Laboratoire d'hématologie, Paris
| | - Emmanuelle Rault
- Groupe Francophone d'Hématologie Cellulaire, Bron, France; Centre Hospitalier Universitaire de Tours, Laboratoire d'Hématologie, Tours
| | - Elodie Dindinaud
- Groupe Francophone d'Hématologie Cellulaire, Bron, France; Centre Hospitalier Universitaire de Poitiers, Laboratoire d'hématologie, Poitiers
| | - Carole Fleury
- Groupe Francophone d'Hématologie Cellulaire, Bron, France; Hôpital Avicenne AP-HP, Laboratoire d'hématologie, Bobigny
| | - Florence Blanc-Jouvan
- Groupe Francophone d'Hématologie Cellulaire, Bron, France; Centre Hospitalier Annecy Genevois, Laboratoire de biologie, Epagny Metz-Tessy
| | - Soraya Wuilleme
- Groupe Francophone d'Hématologie Cellulaire, Bron, France; Centre Hospitalier Universitaire de Nantes, Laboratoire d'Hématologie, Nantes
| | - Valérie Bardet
- Groupe Francophone d'Hématologie Cellulaire, Bron, France; Centre Hospitalier Universitaire Ambroise Paré AP-HP, Service d'Hématologie-Immunologie-Transfusion, Paris
| | - Thierry Fest
- Centre Hospitalier Universitaire de Rennes, Laboratoire d'Hématologie, Rennes, France; Université de Rennes 1, INSERM UMR 1236, Rennes
| | - Thierry Lamy
- Université de Rennes 1, INSERM UMR 1236, Rennes, France; Centre Hospitalier Universitaire de Rennes, Hématologie clinique, Rennes
| | - Mikael Roussel
- Centre Hospitalier Universitaire de Rennes, Laboratoire d'Hématologie, Rennes, France; Université de Rennes 1, INSERM UMR 1236, Rennes
| | - Mélanie Pannetier
- Centre Hospitalier Universitaire de Rennes, Laboratoire d'Hématologie, Rennes, France; Groupe Francophone d'Hématologie Cellulaire, Bron
| | - Cédric Pastoret
- Centre Hospitalier Universitaire de Rennes, Laboratoire d'Hématologie, Rennes, France; Université de Rennes 1, INSERM UMR 1236, Rennes.
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Pastoret C, Aliouat A, Boulland ML, Denoual F, Desmares A, De Tayrac M, Fest T, Letellier C. Abstract 5791: Microfluidics-based library preparation strategies for targeted high-throughput sequencing and RNA sequencing in hematological malignancies in clinical samples. Cancer Res 2022. [DOI: 10.1158/1538-7445.am2022-5791] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Introduction We developed a unique panel of 54 target genes dedicated to hematological malignancies (HematoPanel) and screened 1,108 clinical samples. We also performed transcriptomic analysis and evaluated its relevance for patients with acute lymphoblastic leukemia (ALL).
Methods DNA and RNA were extracted from cell pellets with the Maxwell® RSC (Promega®). Libraries for targeted high-throughput DNA sequencing (HTS) were generated in duplicate from 100 ng with the Advanta™ NGS Library Prep Assay kit using the LP 48.48 IFC (integrated fluidic circuit) on a Juno™ and sequenced on the NextSeq™ 550 (Illumina®) to a median depth of coverage of approximately 1,200X per sample. Transcriptomic libraries were generated from 50 ng RNA with the Advanta RNA-Seq XT NGS Library Prep Kit using the LP 48.Atlas™ IFC on Juno and sequenced on the NextSeq 550. A bioinformatics pipeline was developed for fusion transcript detection. Differential gene expression was analyzed with the DESeq2 package after STAR alignment.
Results In 2020 we sequenced 1,108 consecutive samples in routine practice with HematoPanel. The main indications were the suspicion of myeloproliferative neoplasms (32%), the evaluation of chronic lymphocytic leukemia (23%), and the diagnostic workup of cytopenias (15%). We detected 1,306 mutations in 654 patients (59%) (1 to 8 mutations per sample). Eight genes (TET2, SF3B1, TP53, DNMT3A, ASXL1, JAK2, SRSF2 and MYD88) were reported as mutated for more than 50 patients. We sequenced 22 samples including the MOLT-4 cell line, healthy donor samples, and 16 ALL samples for transcriptomic evaluation. From ALL samples, we detected 5 fusion transcripts previously identified by specific PCR (1 BCR-ABL, 2 ETV6-RUNX1, 1 KMT2A-AFF1, 1 TCF3-PBX1). Moreover, we detected 4 other fusion transcripts for 3 patients (EBF1-PDGFRB, FGFR1-MYO18A, P2RY8-CRLF2, and PAX5-NOL4L). Interestingly, these patients clustered with the BCR-ABL positive sample based on their expression profile. It confirms the diagnosis of Phi-like ALL and thus offers a therapeutic target for these patients.
Conclusion Microfluidics-based library prep using Juno offers a cost-effective strategy and straightforward workflows for both targeted HTS and RNA sequencing. We validated its use for hematological malignancy evaluation in routine practice.
Citation Format: Cédric Pastoret, Amyra Aliouat, Marie-Laure Boulland, Florent Denoual, Anne Desmares, Marie De Tayrac, Thierry Fest, Celeste Letellier. Microfluidics-based library preparation strategies for targeted high-throughput sequencing and RNA sequencing in hematological malignancies in clinical samples [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2022; 2022 Apr 8-13. Philadelphia (PA): AACR; Cancer Res 2022;82(12_Suppl):Abstract nr 5791.
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