Rare variants in GP1BB are responsible for autosomal dominant macrothrombocytopenia
© 2017 by The American Society of Hematology..
The von Willebrand receptor complex, which is composed of the glycoproteins Ibα, Ibβ, GPV, and GPIX, plays an essential role in the earliest steps in hemostasis. During the last 4 decades, it has become apparent that loss of function of any 1 of 3 of the genes encoding these glycoproteins (namely, GP1BA, GP1BB, and GP9) leads to autosomal recessive macrothrombocytopenia complicated by bleeding. A small number of variants in GP1BA have been reported to cause a milder and dominant form of macrothrombocytopenia, but only 2 tentative reports exist of such a variant in GP1BB By analyzing data from a collection of more than 1000 genome-sequenced patients with a rare bleeding and/or platelet disorder, we have identified a significant association between rare monoallelic variants in GP1BB and macrothrombocytopenia. To strengthen our findings, we sought further cases in 2 additional collections in the United Kingdom and Japan. Across 18 families exhibiting phenotypes consistent with autosomal dominant inheritance of macrothrombocytopenia, we report on 27 affected cases carrying 1 of 9 rare variants in GP1BB.
| Errataetall: |
CommentIn: Blood. 2017 Jan 26;129(4):403-404. - PMID 28126957 |
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| Medienart: |
E-Artikel |
| Erscheinungsjahr: |
2017 |
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| Erschienen: |
2017 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:129 |
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| Enthalten in: |
Blood - 129(2017), 4 vom: 26. Jan., Seite 520-524 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Sivapalaratnam, Suthesh [VerfasserIn] |
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| Links: |
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| Themen: |
Adhesion receptor |
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| Anmerkungen: |
Date Completed 14.08.2017 Date Revised 28.03.2024 published: Print-Electronic CommentIn: Blood. 2017 Jan 26;129(4):403-404. - PMID 28126957 Citation Status MEDLINE |
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| doi: |
10.1182/blood-2016-08-732248 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| 500 | |a CommentIn: Blood. 2017 Jan 26;129(4):403-404. - PMID 28126957 | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a © 2017 by The American Society of Hematology. | ||
| 520 | |a The von Willebrand receptor complex, which is composed of the glycoproteins Ibα, Ibβ, GPV, and GPIX, plays an essential role in the earliest steps in hemostasis. During the last 4 decades, it has become apparent that loss of function of any 1 of 3 of the genes encoding these glycoproteins (namely, GP1BA, GP1BB, and GP9) leads to autosomal recessive macrothrombocytopenia complicated by bleeding. A small number of variants in GP1BA have been reported to cause a milder and dominant form of macrothrombocytopenia, but only 2 tentative reports exist of such a variant in GP1BB By analyzing data from a collection of more than 1000 genome-sequenced patients with a rare bleeding and/or platelet disorder, we have identified a significant association between rare monoallelic variants in GP1BB and macrothrombocytopenia. To strengthen our findings, we sought further cases in 2 additional collections in the United Kingdom and Japan. Across 18 families exhibiting phenotypes consistent with autosomal dominant inheritance of macrothrombocytopenia, we report on 27 affected cases carrying 1 of 9 rare variants in GP1BB | ||
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