Engasertib for moderate to severe HHT: see if daily 40 mg helps with nosebleeds
Official title: A Phase 3, Randomized, Double-blind, Placebo-Controlled Study to Assess the Efficacy and Safety of Engasertib in Subjects With Moderate to Severe Hereditary Hemorrhagic Telangiectasia (HHT)
Run by Vaderis Therapeutics AG · NCT07743671 · Data updated 2026-11-12
This trial tests whether taking engasertib once daily for 28 weeks reduces nosebleed frequency in adults with hereditary hemorrhagic telangiectasia compared with placebo.
Quick facts
| Phase | Phase 3 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 240 (estimated) |
| Sponsor | Vaderis Therapeutics AG Industry-sponsored |
| Drugs / interventions | bevacizumab |
| Locations | 4 sites (Chicago, Illinois and 3 other locations) |
| Status | Recruiting |
| Started | September 2026 |
| Main results expected | June 2028 |
| Study ends | June 2028 |
| Registry record updated | September 17, 2026 |
| Trial ID | NCT07743671 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults aged 18 and older with a confirmed diagnosis of HHT, frequent nosebleeds, and anemia or recent iron therapy are ideal candidates.
✕Probably not a fit
Individuals who do not experience a reduction in epistaxis or who have safety concerns with engasertib may not benefit.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This is a Phase 3, randomized, double-blind study evaluating the efficacy and safety of engasertib 40 mg once daily versus placebo in adults with moderate to severe hereditary hemorrhagic telangiectasia (HHT). Participants will be treated for 28 weeks to determine if engasertib can decrease epistaxis frequency. Eligibility requires confirmed HHT by Curaçao criteria, regular epistaxis, and anemia or recent iron therapy, among other criteria. Primary outcome focuses on reduction of nosebleed events; safety will also be monitored. The study is sponsored by Vaderis Therapeutics AG with sites at UCMC, Innovative Hematology, Mayo Clinic, and collaborating centers.
Why it matters
Potential benefit: If successful, participants may experience fewer nosebleeds and improved quality of life due to better disease control.
How similar studies have gone: Previous approaches in HHT have shown mixed results; this is a pivotal Phase 3 trial exploring engasertib's potential effect on epistaxis.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: 1. Participants are ≥18 years of age at the Screening Visit. 2. Participants have a definite diagnosis of HHT by the Curaçao criteria, defined as spontaneous and recurrent epistaxis and having at least 2 of the following criteria: 1. Multiple telangiectases at characteristic sites: lips, oral cavity, fingers, or nose; 2. Visceral lesions: gastrointestinal telangiectasia and/or pulmonary, hepatic, cerebral, or spinal arteriovenous malformations (AVMs); or 3. A first degree relative with HHT according to these criteria. 3. Participants must have an ESS \>4 at screening, and, in the judgement of the Investigator, participants are expected to have regular epistaxis that typically lasts for several minutes. This criterion is assessed at screening only and does not require reconfirmation prior to randomization on Day 1. 4. Participants have anemia OR in the prior 6 months have received a parenteral infusion of at least 250 mg of iron OR in the prior 6 months have received a red cell or whole blood transfusion. Exclusion Criteria: 1. History or current diagnosis of clinically significant electrocardiogram (ECG) abnormalities. 2. History of significant or uncontrolled skin disorders per Investigator's judgement. 3. Local ablative (eg, cauterization) or surgical procedures on nasal telangiectases \<6 weeks before the Screening Visit. 4. Use of drugs with anti-angiogenic properties, including, but not limited to, bevacizumab, pazopanib, thalidomide, lenalidomide, pomalidomide, tacrolimus, sirolimus, or selective estrogen response modulators (tamoxifen, raloxifene, or bazedoxifene) \< 6 weeks before the Screening Visit. 5. Use of oral tranexamic or epsilon-aminocaproic acid unless they are on a stable dose for at least 4 weeks before the Screening Visit, which will need to be continued during the entire duration of the double-blind Treatment Period.
Where it's running
-
The University of Chicago Medical Center (UCMC)
Chicago, Illinois, United States Recruiting -
Innovative Hematology, Inc.,
Indianapolis, Indiana, United States Recruiting -
Mayo Clinic
Rochester, Minnesota, United States Recruiting -
Washington University School of Medicine
St Louis, Missouri, United States Recruiting
Study contacts
- Study coordinator: Vaderis Therapeutics AG
- Email: info@vaderis.com
- Phone: 844-823-3747
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
-
Body donation in HHT
This study tests whether donated human tissue with and without vascular malformations from people with hereditary hemorrhagic telangiectasia can be analyzed to better understand the disease.
-
DIAG723 in Adults With HHT
A first-in-human study tests DIAG723 versus placebo in adults with hereditary hemorrhagic telangiectasia to see if it is safe and possibly helpful.
-
Registry for patients with Hereditary Hemorrhagic Telangiectasia
This study is collecting information from people with Hereditary Hemorrhagic Telangiectasia to better understand the condition and help improve treatments in the future.
-
Evaluating Antiplatelet and Anticoagulation Therapy in Hereditary Hemorrhagic Telangiectasia
This study is testing how well people with Hereditary Hemorrhagic Telangiectasia can handle new blood-thinning treatments compared to not using them, to find out which ones work best for them.
-
Examining the role of hypoxia in hereditary hemorrhagic telangiectasia
This study looks at how low oxygen levels might affect people with hereditary hemorrhagic telangiectasia (HHT) and how it could change the way the disease develops.
-
Using nintedanib to treat nosebleeds in patients with hereditary hemorrhagic telangiectasia
This study is testing if the medication nintedanib can help reduce the number and severity of nosebleeds in people with hereditary hemorrhagic telangiectasia.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.