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Combined deficiency of factor V and factor VIII is an inherited bleeding disorder due to the reduction in activity and antigen levels of both factor V (FV) and factor VIII (FVIII) and characterized by mild-to-moderate bleeding symptoms.
Features include very common findings: Reduced factor VIII activity, Reduced coagulation factor V activity, Prolonged partial thromboplastin time, and Prolonged prothrombin time; and common findings: Gingival bleeding, Epistaxis, Bruising susceptibility, and Prolonged bleeding after dental extraction and others. 18 total HPO annotations.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Blood and immune system | 6 |
Phenotype severity distribution: 4 very common features, 6 common features.
Estimated prevalence: 1-9 in 1,000,000 (Rare).
No clinical trials have been registered for combined deficiency of factor V and factor VIII.
17 publications have been identified in PubMed for combined deficiency of factor V and factor VIII. Research spans Case Report / Case Series (35%), Epidemiology / Natural History (24%), and Review / Meta-Analysis (18%).
Research Type | Count | % of Total |
|---|---|---|
Patient case studies | 6 | 35% |
Data assembled from 4 of 12 sources · Last updated Sep 19, 2026, 11:59 PM UTC
European rare disease database
Genetic and Rare Diseases Info Center
Common questions about combined deficiency of factor V and factor VIII
Kidneys and urinary system | 1 | Blood in the urine (hematuria) |
Heart and blood vessels | 1 | Intracranial hemorrhage |
Digestive system | 1 | Gastrointestinal hemorrhage |
Bones and joints | 1 | Joint hemorrhage |
Metabolism | 1 | High blood fat levels (hyperlipidemia) |
Disease patterns and progression
4 |
24% |
Research summaries | 3 | 18% |
Laboratory research | 2 | 12% |
Clinical study results | 1 | 6% |
New treatment approaches | 1 | 6% |
Altug Inan M (2026). [PMID: 41789952](https://pubmed.ncbi.nlm.nih.gov/41789952/). *Haemophilia : the official journal of the World Federation of Hemophilia*. [Clinical Trial Publication]
Al Dawood R (2025). [PMID: 40796410](https://pubmed.ncbi.nlm.nih.gov/40796410/). *Pathology*. [Review / Meta-Analysis]
Luzarraga JL (2025). [PMID: 41040772](https://pubmed.ncbi.nlm.nih.gov/41040772/). *Cureus*. [Case Report / Case Series]
Farah R (2025). [PMID: 39545718](https://pubmed.ncbi.nlm.nih.gov/39545718/). *Haemophilia : the official journal of the World Federation of Hemophilia*. [Epidemiology / Natural History]
Alhamadeh Alswij M (2025). [PMID: 41377787](https://pubmed.ncbi.nlm.nih.gov/41377787/). *European journal of case reports in internal medicine*. [Case Report / Case Series]
Mohsenian S (2025). [PMID: 40505867](https://pubmed.ncbi.nlm.nih.gov/40505867/). *Journal of thrombosis and haemostasis : JTH*. [Basic Science / Preclinical]
Tavasoli B (2025). [PMID: 39638319](https://pubmed.ncbi.nlm.nih.gov/39638319/). *Seminars in thrombosis and hemostasis*. [Epidemiology / Natural History]
Terzi Ö (2025). [PMID: 39715304](https://pubmed.ncbi.nlm.nih.gov/39715304/). *Journal of pediatric hematology/oncology*. [Epidemiology / Natural History]
Terzi Ö (2025). [PMID: 41361303](https://pubmed.ncbi.nlm.nih.gov/41361303/). *Italian journal of pediatrics*. [Case Report / Case Series]
Yakovleva E (2025). [PMID: 39209292](https://pubmed.ncbi.nlm.nih.gov/39209292/). *Seminars in thrombosis and hemostasis*. [Review / Meta-Analysis]