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A bleeding disorder characterized by mild to moderate mucocutaneous bleeding, which becomes more pronounced during pregnancy or following ingestion of drugs that have anti-platelet activity. PT-VWD is due to hyperresponsive platelets, resulting in thrombocytopenia.
Features include: Prolonged bleeding time and Intermittent thrombocytopenia.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Blood and immune system | 2 | Prolonged bleeding time, Intermittent thrombocytopenia |
GP1BA encodes glycoprotein Ib platelet subunit alpha (652 aa). GP-Ib, a surface membrane protein of platelets, participates in the formation of platelet plugs by binding to the A1 domain of vWF, which is already bound to the subendothelium Highest expression in Skin Sun Exposed Lower leg (4.2 TPM) and Skin Not Sun Exposed Suprapubic (4.0 TPM).
Platelet-type von Willebrand disease is caused by mutations in the GP1BA gene on chromosome 17.
The GP1BA protein participates in GP1BA variant:GP1BB:GP9, GP1BA variant:GP1BB:GP9:GP5, and RUNX1:CBFB:SIN3A,(SIN3B):PRMT6:HDAC1:GP1BA gene:H3K4me2-Nucleosome pathways.
GP1BA is classified as a druggable target (Cell Surface, Druggable Genome, and External Side Of Plasma Membrane categories) with score 4.7.
Genetic testing for GP1BA is available. Testing is considered confirmatory for diagnosis.
Estimated prevalence: <1 in 1,000,000 (VERY_RARE).
No clinical trials have been registered for platelet-type von Willebrand disease.
8 publications have been identified in PubMed for platelet-type von Willebrand disease. Research spans Review / Meta-Analysis (43%), Case Report / Case Series (29%), and Epidemiology / Natural History (14%).
Kazmirchuk TDD (2026). [PMID: 40938733](https://pubmed.ncbi.nlm.nih.gov/40938733/). *Blood Adv*. [Gene Therapy / Novel Therapeutics]
Huguenin Y (2026). [PMID: 41734779](https://pubmed.ncbi.nlm.nih.gov/41734779/). *Semin Thromb Hemost*. [Case Report / Case Series]
Fu A (2025). [PMID: 39191406](https://pubmed.ncbi.nlm.nih.gov/39191406/). *Semin Thromb Hemost*. [Review / Meta-Analysis]
Othman M (2025). [PMID: 40328428](https://pubmed.ncbi.nlm.nih.gov/40328428/). *J Thromb Haemost*. [Review / Meta-Analysis]
Seidizadeh O (2025). [PMID: 39975577](https://pubmed.ncbi.nlm.nih.gov/39975577/). *Res Pract Thromb Haemost*. [Epidemiology / Natural History]
Data assembled from 7 of 12 sources · Last updated Sep 19, 2026, 3:42 PM UTC
Online Mendelian Inheritance in Man
European rare disease database
Genetic and Rare Diseases Info Center
Jaouen S (2024). [PMID: 39228434](https://pubmed.ncbi.nlm.nih.gov/39228434/). *Res Pract Thromb Haemost*. [Case Report / Case Series]
AI-curated news mentioning platelet-type von Willebrand disease
Updated Sep 7, 2026
A case report details comprehensive dental management under general anesthesia for a pediatric patient with type 3 von Willebrand disease. This study highlights the challenges and considerations in treating dental issues in patients with bleeding disorders.
A recent publication discusses the diagnostic and therapeutic challenges associated with platelet type von Willebrand disease. The study highlights the complexities in managing this rare bleeding disorder, emphasizing the need for improved diagnostic strategies.
Recent publication details two clinical cases of Type 3 Von Willebrand disease, a rare bleeding disorder. The study contributes to the understanding of this condition and its clinical manifestations.