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Not all IGHV3-21 chronic lymphocytic leukemias are equal: prognostic considerations

P. Baliakas, A. Agathangelidis, A. Hadzidimitriou, LA. Sutton, E. Minga, A. Tsanousa, L. Scarfò, Z. Davis, XJ. Yan, T. Shanafelt, K. Plevova, Y. Sandberg, FJ. Vojdeman, M. Boudjogra, T. Tzenou, M. Chatzouli, CC. Chu, S. Veronese, A. Gardiner, L....

. 2015 ; 125 (5) : 856-859.

Jazyk angličtina Země Spojené státy americké

Typ dokumentu časopisecké články, Research Support, N.I.H., Extramural, práce podpořená grantem

Perzistentní odkaz   https://www.medvik.cz/link/bmc15022842

Grantová podpora
NT13493 MZ0 CEP - Centrální evidence projektů

An unresolved issue in chronic lymphocytic leukemia (CLL) is whether IGHV3-21 gene usage, in general, or the expression of stereotyped B-cell receptor immunoglobulin defining subset #2 (IGHV3-21/IGLV3-21), in particular, determines outcome for IGHV3-21-utilizing cases. We reappraised this issue in 8593 CLL patients of whom 437 (5%) used the IGHV3-21 gene with 254/437 (58%) classified as subset #2. Within subset #2, immunoglobulin heavy variable (IGHV)-mutated cases predominated, whereas non-subset #2/IGHV3-21 was enriched for IGHV-unmutated cases (P = .002). Subset #2 exhibited significantly shorter time-to-first-treatment (TTFT) compared with non-subset #2/IGHV3-21 (22 vs 60 months, P = .001). No such difference was observed between non-subset #2/IGHV3-21 vs the remaining CLL with similar IGHV mutational status. In conclusion, IGHV3-21 CLL should not be axiomatically considered a homogeneous entity with adverse prognosis, given that only subset #2 emerges as uniformly aggressive, contrasting non-subset #2/IGVH3-21 patients whose prognosis depends on IGHV mutational status as the remaining CLL.

1st Department of Propaedeutic Medicine University of Athens Athens Greece

Central European Institute of Technology Masaryk University and University Hospital Brno Brno Czech Republic

Central European Institute of Technology Masaryk University Brno Czech Republic

Department of Haematology Royal Bournemouth Hospital Bournemouth United Kingdom

Department of Hemato Oncology Belfast City Hospital Belfast United Kingdom

Department of Hematology Erasmus Medical Center University Medical Center Rotterdam Rotterdam The Netherlands

Department of Hematology Rigshospitalet Copenhagen Denmark

Department of Immunology Erasmus Medical Center University Medical Center Rotterdam Rotterdam The Netherlands

Department of Immunology Genetics and Pathology Science for Life Laboratory Uppsala University Uppsala Sweden

Department of Immunology Mayo Clinic Rochester MN

Department of Informatics Aristotle University of Thessaloniki Thessaloniki Greece

Department of Medicine Hematology and Clinical Immunology Branch Padua University School of Medicine Italy

Department of Medicine Solna Clinical Epidemiology Unit Karolinska Institutet Stockholm Sweden

Division of Hematology Department of Medicine Mayo Clinic Rochester MN

Division of Molecular Oncology and Department of Onco Hematology Istituto di Ricovero e Cura a Carattere Scientifico San Raffaele Scientific Institute Milan Italy

Hematology Department and Hematopoietic Cell Transplantation Unit Georgios Papanicolaou Hospital Thessaloniki Greece

Hematology Department and University Pierre et Marie Curie Hopital Pitie Salpetriere Paris France

Hematology Department Nikea General Hospital Piraeus Greece

Hôpital Pitié Salpêtrière Service d'Hématologie Biologique Paris France

ImMunoGeneTics Université de Montpellier Laboratoire d'Informatique Gaspard Monge Institut de Génétique Humaine Montpellier France

Institute of Applied Biosciences Centre for Research and Technology Hellas Thessaloniki Greece

Lund University and Hospital Department of Hematology Lund Stem Cell Center Lund Sweden

Molecular Pathology Unit and Haematology Department Niguarda Cancer Center Niguarda Ca' Granda Hospital Milan Italy

The Feinstein Institute for Medical Research North Shore Long Island Jewish Health System Manhasset NY

Università Vita Salute San Raffaele Milan Italy

Venetian Institute of Molecular Medicine Padova Italy

Citace poskytuje Crossref.org

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$a An unresolved issue in chronic lymphocytic leukemia (CLL) is whether IGHV3-21 gene usage, in general, or the expression of stereotyped B-cell receptor immunoglobulin defining subset #2 (IGHV3-21/IGLV3-21), in particular, determines outcome for IGHV3-21-utilizing cases. We reappraised this issue in 8593 CLL patients of whom 437 (5%) used the IGHV3-21 gene with 254/437 (58%) classified as subset #2. Within subset #2, immunoglobulin heavy variable (IGHV)-mutated cases predominated, whereas non-subset #2/IGHV3-21 was enriched for IGHV-unmutated cases (P = .002). Subset #2 exhibited significantly shorter time-to-first-treatment (TTFT) compared with non-subset #2/IGHV3-21 (22 vs 60 months, P = .001). No such difference was observed between non-subset #2/IGHV3-21 vs the remaining CLL with similar IGHV mutational status. In conclusion, IGHV3-21 CLL should not be axiomatically considered a homogeneous entity with adverse prognosis, given that only subset #2 emerges as uniformly aggressive, contrasting non-subset #2/IGVH3-21 patients whose prognosis depends on IGHV mutational status as the remaining CLL.
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