Capillary malformation

This study tests a new medicine called ALN-6400 for people with hereditary hemorrhagic telangiectasia (HHT), a condition that causes abnormal blood vessels and frequent nosebleeds. First, healthy volunteers will receive a single dose to check safety. Then, HHT patients will recei…

This phase 2 trial tests whether bevacizumab, a drug that blocks blood vessel growth, can reduce chronic bleeding and iron-deficiency anemia in people with hereditary hemorrhagic telangiectasia (HHT). HHT causes abnormal blood vessels that bleed easily. The study involves 33 adul…

This was a planned early-stage study of a new drug called TER-1754 for people with hereditary hemorrhagic telangiectasia (HHT), a condition that causes frequent nosebleeds and abnormal blood vessels. The trial aimed to test safety and find the right dose, but it was withdrawn bef…

This study tests whether a low dose of pazopanib, a drug currently used for cancer, can reduce severe nosebleeds and improve anemia in people with hereditary hemorrhagic telangiectasia (HHT). About 70 participants will take either the drug or a placebo daily for 24 weeks. Researc…

This study tests a new drug called VAD044 in 75 adults with hereditary hemorrhagic telangiectasia (HHT), a condition that causes frequent nosebleeds and anemia. The first part compares two doses of VAD044 against a placebo to see if it safely reduces the number, length, and sever…

This study looks at whether the drug bevacizumab can help people with a rare condition called hereditary hemorrhagic telangiectasia (HHT) who have severe liver problems leading to high heart output and possible heart failure. Researchers will check heart function before and after…

This study uses a special imaging device called optical coherence tomography (OCT) to look at blood vessels in vascular stains (a type of birthmark). Researchers want to see if the size and depth of these vessels relate to the birthmark's genetics. About 73 people with vascular s…

This study is creating a registry of people with Hereditary Hemorrhagic Telangiectasia (HHT), a rare condition that causes abnormal blood vessels and frequent nosebleeds. Researchers will collect health information from about 1,000 adults over many years to see how the disease ch…