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Barozzi S, Pecci A, Marinoni M, Fontana G, Zanchetta ME, Noris P, Savoia A, Faleschini M. GP1BB c.179C > T is the most frequent cause of monoallelic Bernard-Soulier syndrome in the Italian population after the Bolzano variant: a report of two new families. Ann Hematol 2023; 102:677-679. [PMID: 36539614 DOI: 10.1007/s00277-022-05079-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 12/01/2022] [Indexed: 12/24/2022]
Affiliation(s)
- Serena Barozzi
- Medicina Generale 1, IRCCS Policlinico San Matteo Foundation, Pavia, Italy
| | - Alessandro Pecci
- Medicina Generale 1, IRCCS Policlinico San Matteo Foundation, Pavia, Italy.,Department of Internal Medicine, University of Pavia, Pavia, Italy
| | | | - Giorgia Fontana
- Institute for Maternal and Child Health, IRCCS Burlo Garofolo, Trieste, Italy
| | | | - Patrizia Noris
- Department of Internal Medicine, University of Pavia, Pavia, Italy
| | - Anna Savoia
- Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Verona, Italy.
| | - Michela Faleschini
- Institute for Maternal and Child Health, IRCCS Burlo Garofolo, Trieste, Italy
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Dib F, Quéméner A, Bayart S, Boisseau P, Babuty A, Trossaërt M, Sigaud M, Ternisien C, Drillaud N, Eveillard M, Guillet B, Béné MC, Fouassier M. Biological, clinical features and modelling of heterozygous variants of glycoprotein Ib platelet subunit alpha (GP1BA) and glycoprotein Ib platelet subunit beta (GP1BB) genes responsible for constitutional thrombocytopenia. Br J Haematol 2022; 199:744-753. [PMID: 36173017 DOI: 10.1111/bjh.18462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 08/29/2022] [Accepted: 08/31/2022] [Indexed: 11/28/2022]
Abstract
Constitutional thrombocytopenias are rare disorders, often difficult to discriminate from acquired thrombocytopenias. More than 80 genes have been described as being at the origin of these diseases. Among them, several variants of the glycoprotein Ib platelet subunit alpha (GP1BA) and glycoprotein Ib platelet subunit beta (GP1BB) genes, coding for the GpIb-IX-V glycoprotein complex, have been reported in the literature. The study reported here aimed at describing newly identified monoallelic anomalies affecting the GP1BA and GP1BB genes on a clinical, biological and molecular level. In a cohort of nine patients with macrothrombocytopenia, eight heterozygous variants of the GP1BA or GP1BB genes were identified. Five of them had never been described in the heterozygous state. Computer modelling disclosed structure/function relationships of these five variants.
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Affiliation(s)
- Fatema Dib
- Service d'Hématologie Biologique, CHU de Nantes, Nantes, France
| | - Agnès Quéméner
- Nantes Université, Inserm UMR 1307, CNRS UMR 6075, Université d'Angers, CRCI2NA, Nantes, France
| | | | - Pierre Boisseau
- Service de Génétique Médicale, CHU de Nantes, Nantes, France
| | - Antoine Babuty
- Service d'Hématologie Biologique, CHU de Nantes, Nantes, France.,CRC-MH, CHU de Nantes, Nantes, France
| | - Marc Trossaërt
- Service d'Hématologie Biologique, CHU de Nantes, Nantes, France.,CRC-MH, CHU de Nantes, Nantes, France
| | - Marianne Sigaud
- Service d'Hématologie Biologique, CHU de Nantes, Nantes, France.,CRC-MH, CHU de Nantes, Nantes, France
| | - Catherine Ternisien
- Service d'Hématologie Biologique, CHU de Nantes, Nantes, France.,CRC-MH, CHU de Nantes, Nantes, France
| | - Nicolas Drillaud
- Service d'Hématologie Biologique, CHU de Nantes, Nantes, France.,CRC-MH, CHU de Nantes, Nantes, France
| | - Marion Eveillard
- Service d'Hématologie Biologique, CHU de Nantes, Nantes, France.,Nantes Université, Inserm UMR 1307, CNRS UMR 6075, Université d'Angers, CRCI2NA, Nantes, France
| | - Benoit Guillet
- CRC-MH, CHU de Rennes, Rennes, France.,Univ Rennes, CHU Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, Rennes, France
| | - Marie C Béné
- Service d'Hématologie Biologique, CHU de Nantes, Nantes, France.,Nantes Université, Inserm UMR 1307, CNRS UMR 6075, Université d'Angers, CRCI2NA, Nantes, France
| | - Marc Fouassier
- Service d'Hématologie Biologique, CHU de Nantes, Nantes, France.,CRC-MH, CHU de Nantes, Nantes, France
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3
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Inherited Platelet Disorders: An Updated Overview. Int J Mol Sci 2021; 22:ijms22094521. [PMID: 33926054 PMCID: PMC8123627 DOI: 10.3390/ijms22094521] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 04/17/2021] [Accepted: 04/21/2021] [Indexed: 02/06/2023] Open
Abstract
Platelets play a major role in hemostasis as ppwell as in many other physiological and pathological processes. Accordingly, production of about 1011 platelet per day as well as appropriate survival and functions are life essential events. Inherited platelet disorders (IPDs), affecting either platelet count or platelet functions, comprise a heterogenous group of about sixty rare diseases caused by molecular anomalies in many culprit genes. Their clinical relevance is highly variable according to the specific disease and even within the same type, ranging from almost negligible to life-threatening. Mucocutaneous bleeding diathesis (epistaxis, gum bleeding, purpura, menorrhagia), but also multisystemic disorders and/or malignancy comprise the clinical spectrum of IPDs. The early and accurate diagnosis of IPDs and a close patient medical follow-up is of great importance. A genotype-phenotype relationship in many IPDs makes a molecular diagnosis especially relevant to proper clinical management. Genetic diagnosis of IPDs has been greatly facilitated by the introduction of high throughput sequencing (HTS) techniques into mainstream investigation practice in these diseases. However, there are still unsolved ethical concerns on general genetic investigations. Patients should be informed and comprehend the potential implications of their genetic analysis. Unlike the progress in diagnosis, there have been no major advances in the clinical management of IPDs. Educational and preventive measures, few hemostatic drugs, platelet transfusions, thrombopoietin receptor agonists, and in life-threatening IPDs, allogeneic hematopoietic stem cell transplantation are therapeutic possibilities. Gene therapy may be a future option. Regular follow-up by a specialized hematology service with multidisciplinary support especially for syndromic IPDs is mandatory.
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Dunstan-Harrison C, Morison IM, Ledgerwood EC. A novel frameshift GP1BB mutation causes autosomal dominant macrothrombocytopenia with decreased vWF receptor expression but normal platelet aggregation. Platelets 2021; 33:324-327. [PMID: 33813986 DOI: 10.1080/09537104.2021.1909716] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
GP1bβ is a component of the von Willebrand factor (vWF) receptor complex that is necessary for platelet formation and activation. A novel frameshift variant in GP1BB has been identified in a family with macrothrombocytopenia. The variant leads to a protein that is 101 amino acids longer than wild type with loss of the transmembrane domain. As there is no defect in platelet aggregation, the family are classified as heterozygous carriers of a Bernard-Soulier syndrome-related mutation. The levels of the vWF receptor on platelets are reduced to 50% of the controls, with the presence of large platelets but normal platelet aggregation demonstrating that decreased vWF receptor expression impacts proplatelet formation but not platelet function.
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Affiliation(s)
| | - Ian M Morison
- Departments of Pathology, University of Otago, Dunedin, New Zealand
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5
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Busonero F, Steri M, Orrù V, Sole G, Olla S, Marongiu M, Maschio A, Sidore C, Lai S, Mulas A, Zoledziewska M, Floris M, Pala M, Forabosco P, Asunis I, Pitzalis M, Deidda F, Masala M, Caria CA, Barella S, Abecasis GR, Schlessinger D, Sanna S, Fiorillo E, Cucca F. A Sardinian founder mutation in glycoprotein Ib platelet subunit beta (GP1BB) that impacts thrombocytopenia. Br J Haematol 2020; 191:e124-e128. [PMID: 33216977 DOI: 10.1111/bjh.17090] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Fabio Busonero
- Istituto di Ricerca Genetica e Biomedica, Consiglio Nazionale delle Ricerche (CNR), Monserrato (Cagliari), Italy
| | - Maristella Steri
- Istituto di Ricerca Genetica e Biomedica, Consiglio Nazionale delle Ricerche (CNR), Monserrato (Cagliari), Italy
| | - Valeria Orrù
- Istituto di Ricerca Genetica e Biomedica, Consiglio Nazionale delle Ricerche (CNR), Monserrato (Cagliari), Italy
| | - Gabriella Sole
- Istituto di Ricerca Genetica e Biomedica, Consiglio Nazionale delle Ricerche (CNR), Monserrato (Cagliari), Italy
| | - Stefania Olla
- Istituto di Ricerca Genetica e Biomedica, Consiglio Nazionale delle Ricerche (CNR), Monserrato (Cagliari), Italy
| | - Michele Marongiu
- Istituto di Ricerca Genetica e Biomedica, Consiglio Nazionale delle Ricerche (CNR), Monserrato (Cagliari), Italy
| | - Andrea Maschio
- Istituto di Ricerca Genetica e Biomedica, Consiglio Nazionale delle Ricerche (CNR), Monserrato (Cagliari), Italy
| | - Carlo Sidore
- Istituto di Ricerca Genetica e Biomedica, Consiglio Nazionale delle Ricerche (CNR), Monserrato (Cagliari), Italy
| | - Sandra Lai
- Istituto di Ricerca Genetica e Biomedica, Consiglio Nazionale delle Ricerche (CNR), Monserrato (Cagliari), Italy
| | - Antonella Mulas
- Istituto di Ricerca Genetica e Biomedica, Consiglio Nazionale delle Ricerche (CNR), Monserrato (Cagliari), Italy
| | - Magdalena Zoledziewska
- Istituto di Ricerca Genetica e Biomedica, Consiglio Nazionale delle Ricerche (CNR), Monserrato (Cagliari), Italy
| | - Matteo Floris
- Istituto di Ricerca Genetica e Biomedica, Consiglio Nazionale delle Ricerche (CNR), Monserrato (Cagliari), Italy.,Dipartimento di Scienze Biomediche, Università degli Studi di Sassari, Sassari, Italy
| | - Mauro Pala
- Istituto di Ricerca Genetica e Biomedica, Consiglio Nazionale delle Ricerche (CNR), Monserrato (Cagliari), Italy
| | - Paola Forabosco
- Istituto di Ricerca Genetica e Biomedica, Consiglio Nazionale delle Ricerche (CNR), Monserrato (Cagliari), Italy
| | - Isadora Asunis
- Istituto di Ricerca Genetica e Biomedica, Consiglio Nazionale delle Ricerche (CNR), Monserrato (Cagliari), Italy
| | - Maristella Pitzalis
- Istituto di Ricerca Genetica e Biomedica, Consiglio Nazionale delle Ricerche (CNR), Monserrato (Cagliari), Italy
| | - Francesca Deidda
- Istituto di Ricerca Genetica e Biomedica, Consiglio Nazionale delle Ricerche (CNR), Monserrato (Cagliari), Italy
| | - Marco Masala
- Istituto di Ricerca Genetica e Biomedica, Consiglio Nazionale delle Ricerche (CNR), Monserrato (Cagliari), Italy
| | - Cristian Antonio Caria
- Istituto di Ricerca Genetica e Biomedica, Consiglio Nazionale delle Ricerche (CNR), Monserrato (Cagliari), Italy
| | - Susanna Barella
- Ospedale Pediatrico Microcitemico 'Antonio Cao' (A.O.Brotzu), Cagliari, Italy
| | - Goncalo R Abecasis
- Center for Statistical Genetics, University of Michigan, Ann Arbor, MI, USA
| | - David Schlessinger
- Laboratory of Genetics and Genomics, National Institute on Aging, US National Institutes of Health, Baltimore, MD, USA
| | - Serena Sanna
- Istituto di Ricerca Genetica e Biomedica, Consiglio Nazionale delle Ricerche (CNR), Monserrato (Cagliari), Italy
| | - Edoardo Fiorillo
- Istituto di Ricerca Genetica e Biomedica, Consiglio Nazionale delle Ricerche (CNR), Monserrato (Cagliari), Italy
| | - Francesco Cucca
- Istituto di Ricerca Genetica e Biomedica, Consiglio Nazionale delle Ricerche (CNR), Monserrato (Cagliari), Italy.,Dipartimento di Scienze Biomediche, Università degli Studi di Sassari, Sassari, Italy
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