Influence of Hypoxic Induced Factors in Patients With Hereditary Hemorrhagic Telangiectasia
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- The protocol lists: hypoxic induced factors.
- Who it may be relevant to
- Registry conditions: Hereditary Hemorrhagic Telangiectasia. Basic parameters: from 18 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- Germany
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
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Official title
Influence of Hypoxic Induced Factors in Patients With Hereditary Hemorrhagic Telangiectasia (HHT)
Overview
Patients with hereditary hemorrhagic telangiectasia (HHT) suffer from an inherited disorder leading to systemic vascular malformations. Mutations in several genes of the transforming growth factor (TGF)-β superfamily pathway influence angiogenesis in patients with HHT. The genetic loss of ALK1 or ENG alone are not sufficient to induce AVMs; environmental insults that could trigger angiogenesis (e.g. wounding) are also needed. In this study it will be analyzed if hypoxic induced factors could have an influence on the disease HHT.
Detailed description
Hereditary hemorrhagic telangiectasia (HHT) is characterized by systemic vascular malformations leading to recurrent bleedings and shunt formation especially in the liver, lungs and the brain. The underlying pathogenic HHT mechanism remains unclear. The wide variability in age of onset and severity of symptoms amongst patients, even within the same family, suggests several factors contribute to the complexity of this disease. Mutations in several genes of the transforming growth factor (TGF)-β superfamily pathway influence angiogenesis in patients with HHT. The genetic loss of ALK1 or ENG alone are not sufficient to induce AVMs; environmental insults that could trigger angiogenesis (e.g. wounding) are also needed. In this study it will be analyzed if hypoxic induced factors could have an influence on the disease HHT.
Interventions
- Other hypoxic induced factors
hypoxic induced factors analyzed in blood sample
Primary outcome measures
- Differences in hypoxic induced factors [Time frame: 12 months]
Secondary outcome measures (1)
- Correlation of level of hypoxic induced factors and disease severity [Time frame: 12 months]
Eligibility criteria
Inclusion criteria
- diagnosed HHT (genetic testing and/ or fulfill at least 3 Curacao Criteria)
- older than 17 years
- ability to consent
Exclusion criteria
- if inclusion Criteria are not met
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: Yes
Study design
- Observational model
- Case-control
Study locations
Germany · 1 center
- University Hospital Essen — Essen
Publications
- Kjeldsen AD, Vase P, Green A. [Hereditary hemorrhagic telangiectasia. A population-based study on prevalence and mortality among Danish HHT patients]. Ugeskr Laeger. 2000 Jun 19;162(25):3597-601. Danish. PMID 11016284
- Shovlin CL, Guttmacher AE, Buscarini E, Faughnan ME, Hyland RH, Westermann CJ, Kjeldsen AD, Plauchu H. Diagnostic criteria for hereditary hemorrhagic telangiectasia (Rendu-Osler-Weber syndrome). Am J Med Genet. 2000 Mar 6;91(1):66-7. doi: 10.1002/(sici)1096-8628(20000306)91:13.0.co;2-p. PMID 10751092
- Sanchez-Elsner T, Botella LM, Velasco B, Corbi A, Attisano L, Bernabeu C. Synergistic cooperation between hypoxia and transforming growth factor-beta pathways on human vascular endothelial growth factor gene expression. J Biol Chem. 2001 Oct 19;276(42):38527-35. doi: 10.1074/jbc.M104536200. Epub 2001 Aug 2. PMID 11486006
- Park SO, Wankhede M, Lee YJ, Choi EJ, Fliess N, Choe SW, Oh SH, Walter G, Raizada MK, Sorg BS, Oh SP. Real-time imaging of de novo arteriovenous malformation in a mouse model of hereditary hemorrhagic telangiectasia. J Clin Invest. 2009 Nov;119(11):3487-96. doi: 10.1172/JCI39482. Epub 2009 Oct 1. PMID 19805914
- Attisano L, Wrana JL. Smads as transcriptional co-modulators. Curr Opin Cell Biol. 2000 Apr;12(2):235-43. doi: 10.1016/s0955-0674(99)00081-2. PMID 10712925
Identifiers
NCT: NCT04469517 · HIF in HHT