Clinical Research Directory

Effects of Pazopanib on Hereditary Hemorrhagic Telangiectasia Related Epistaxis and Anemia (Paz)

During the Efficacy Study (Part B), the investigators will study whether Pazopanib, taken daily for 24 weeks, will reduce the severity of nose bleeds in patients with hereditary hemorrhagic telangiectasia (HHT). Patients will either be provided active drug or a placebo \[sugar - inactive pill\], and be tested for nose bleed severity throughout the trial, including particularly nose bleed duration. Investigators will also test for blood loss, as well as for safety. This study is funded by the US Department of Defense USAMRAA and FDA/OOPD.

Bevacizumab in the Treatment of HHT

Clinical Study Abstract (Ethics Application) Hereditary hemorrhagic telangiectasia (HHT) is a rare autosomal dominant vascular disorder characterized by recurrent intractable epistaxis and multi-organ arteriovenous malformations. Moderate-to-severe patients often develop refractory anemia with severely impaired quality of life. Current stepwise therapeutic strategies have substantial limitations, including frequent adverse reactions of thalidomide, high recurrence rates after electrocoagulation, and severe surgical trauma, resulting in a lack of safe and individualized treatment options. Our preliminary clinical practice has verified the promising efficacy and long-term benefits of bevacizumab in severe HHT-related epistaxis. However, obvious interindividual variability and occasional adverse events exist, and the underlying mechanism remains unclear. This study aims to systematically evaluate the efficacy and safety of bevacizumab for severe HHT-associated epistaxis, explore the influences of baseline clinical and genetic factors on prognosis, and investigate the mechanism of treatment heterogeneity, so as to optimize individualized therapeutic strategies and provide clinical evidence for precise management of HHT in China.

CHORUS - Comprehensive HHT Outcomes Registry of the United States (Formerly OUR HHT Registry)

The goal of this study is to better understand HHT, the symptoms and complications it causes ("outcomes") and how the disease impacts people's lives. The investigators are aiming to recruit and gather information together in the Registry from 1,000 HHT patients from four HHT Centres of Excellence in North America. The Investigators will collect long-term information about the people in the Registry, allowing the investigators to understand how the disease changes over time, and what factors can influence those changes. Ultimately, this should help improve treatments for the disease.

Institutional Registry of Rare Diseases

The goal of this observational study is to create a single macro registry system with data collection on common clinical features, grouping the different rare diseases (RD). Moreover, the specific goals are to generate an alert system for possible cases of RD with data from the electronic medical record, to describe the occurrence of RD in the evaluated population, to characterize the population, to describe patterns of diagnosis and treatment of RD present at the time, and to explore patient-reported outcomes.

Tourniquet-Test in HHT

The Tourniquet test is used as a diagnostic procedure for thrombocytopathies and vascular diseases. Currently, there is no evidence whether this test is also positive in hereditary haemorrhagic telangiectasia (HHT), a vasculopathy. The aim of this study was to investigate whether this non-invasive test could also be used as an additional diagnostic criterion in patients with HHT.