Hepatitis D virus infection
MONDO:0005789Inflammation of the liver in humans caused by hepatitis delta virus, a defective RNA virus that can only infect hepatitis B patients. For its viral coating, hepatitis delta virus requires the hepatitis B surface antigens produced by these patients. Hepatitis D can occur either concomitantly with (coinfection) or subsequent to (superinfection) hepatitis B infection. Similar to hepatitis B, it is primarily transmitted by parenteral exposure, such as transfusion of contaminated blood or blood products, but can also be transmitted via sexual or intimate personal contact.
Also known as: HDV, Hepatitis D, Hepatitis D virus, Hepatitis delta virus caused hepatitis, Hepatitis delta virus hepatitis, hepatitis delta, hepatitis type D
53 clinical trials for this condition and its sub-types, 47 tagged with Hepatitis D virus infection itself.
Follow this condition to get notified about new trialsWhere it sits in the disease tree
Browse by category →-
Can a new interferon tame hepatitis d?
Disease control CompletedThis phase 2 trial tests whether peginterferon lambda, an experimental interferon drug, can safely reduce hepatitis D virus levels in people with chronic infection. Participants receive one of two doses of the drug for 48 weeks, and researchers measure changes in viral load and l…
Phase 2 • Sponsor: EIT Pharma, Inc. • Aim: Disease control
Last updated Sep 10, 2026 00:00 UTC
-
Can a new shot help control hepatitis d in people with hepatitis b?
Disease control CompletedThis phase 2 trial is testing whether adding an experimental drug called JNJ-73763989 to standard oral antivirals can better suppress hepatitis D virus in people who are also infected with hepatitis B. About 52 adults with stable chronic co-infection will receive either the combi…
Phase 2 • Sponsor: Janssen Research & Development, LLC • Aim: Disease control
Last updated Jul 24, 2026 00:00 UTC
-
New combo therapy aims to clear hepatitis b and d in 20-patient trial
Disease control CompletedThis early-stage study tested a new treatment approach for adults with chronic hepatitis B or D. Twenty participants received two medications in sequence: P1101 (a type of interferon) followed by an anti-PD1 drug. The main goal was to check safety and tolerability, while also loo…
Phase 1 • Sponsor: PharmaEssentia • Aim: Disease control
Last updated Jun 27, 2026 13:07 UTC
-
New pill combo aims to tame hepatitis d in small trial
Disease control CompletedThis completed Phase 3 trial tested a once-daily combination of two drugs, lonafarnib and ritonavir, in 10 adults with chronic hepatitis D. The goal was to see if the regimen is safe and can lower the amount of virus in the blood over 48 weeks of treatment and 24 weeks of follow-…
Phase 3 • Sponsor: Soroka University Medical Center • Aim: Disease control
Last updated Jun 27, 2026 12:26 UTC
-
New antibody shows promise against rare liver infection
Disease control CompletedThis study tested an experimental drug called HH-003 in 101 adults with chronic hepatitis delta, a serious liver disease. HH-003 is an antibody that targets hepatitis B virus, which is needed for hepatitis delta to survive. Participants received either a low or high dose of HH-00…
Phase 2 • Sponsor: Huahui Health • Aim: Disease control
Last updated Jun 27, 2026 12:00 UTC
-
Kidney-Friendly? early study checks hepatitis d drug in patients with impaired kidneys
Disease control CompletedThis early-stage study looked at how the drug bulevirtide behaves in people with chronic hepatitis D who also have normal or impaired kidney function. Researchers measured drug levels in the blood, its effect on bile acids, and overall safety. The study enrolled 41 adults and gav…
Phase 1 • Sponsor: Gilead Sciences • Aim: Disease control
Last updated Jun 26, 2026 18:26 UTC
-
UV water treatment tested to keep kids healthy
Prevention CompletedThis study tested whether treating private well water with ultraviolet (UV) light can prevent stomach and respiratory infections in children under 5. Researchers gave 28 Pennsylvania households either a real UV device or a fake one and tracked illness symptoms via weekly texts. T…
Sponsor: Temple University • Aim: Prevention
Last updated Sep 21, 2026 20:00 UTC
-
Hidden hepatitis d: nationwide survey maps its reach in thailand
Knowledge-focused CompletedResearchers are surveying people in Thailand who have chronic hepatitis B to find out how many also carry hepatitis D, a virus that can make liver disease worse. The study focuses on groups at higher risk, including people who inject drugs, men who have sex with men, prisoners, a…
Sponsor: The HIV Netherlands Australia Thailand Research Collaboration • Aim: Knowledge-focused
Last updated Sep 19, 2026 00:00 UTC
-
Decade-Long study aims to unlock liver disease risks in HIV-Hepatitis b patients
Knowledge-focused CompletedThis study follows adults in Zambia who have both HIV and chronic hepatitis B to track liver health over up to 10 years. Researchers aim to understand how current HIV treatments affect hepatitis B and liver damage, and to identify factors that lead to serious outcomes like liver …
Sponsor: University of Alabama at Birmingham • Aim: Knowledge-focused
Last updated Jul 04, 2026 00:00 UTC
-
Zambia study tracks hepatitis b outcomes in hundreds of patients
Knowledge-focused CompletedThis study followed 326 adults in Zambia with chronic hepatitis B for up to 5 years. Researchers tracked how the virus behaves, how many patients need treatment, and how many develop serious liver problems like cirrhosis or liver cancer. The goal was to better understand the dise…
Sponsor: University of Alabama at Birmingham • Aim: Knowledge-focused
Last updated Jun 27, 2026 13:06 UTC
-
Liver disease Patients' vaccine response under the microscope
Knowledge-focused CompletedThis study looked at how people with chronic liver disease (like hepatitis B, C, or fatty liver) respond to COVID-19 vaccines. About 233 adults had three visits over a year to check their immune response and see if they got COVID-19. The goal was to understand if liver disease af…
Sponsor: National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:09 UTC
-
Liver drug bulevirtide tested in people with liver problems
Knowledge-focused CompletedThis completed Phase 1 study looked at how the drug bulevirtide (Hepcludex) behaves in the body of people with normal liver function and those with liver impairment. Researchers measured drug levels in the blood and how quickly it is cleared. The study involved 74 participants an…
Phase 1 • Sponsor: Gilead Sciences • Aim: Knowledge-focused
Last updated Jun 27, 2026 08:14 UTC
-
First human test of new hepatitis d drug begins
Knowledge-focused CompletedThis early-stage study tested the safety and how the body processes a new drug called ABI-6250 in 40 healthy adults. Participants received either the drug or a placebo, and researchers measured side effects and drug levels in the blood. The goal was to gather safety information b…
Phase 1 • Sponsor: Assembly Biosciences • Aim: Knowledge-focused
Last updated Jun 27, 2026 08:01 UTC