New hope for Drug-Resistant herpes in vulnerable patients

NCT ID NCT03073967

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tested a new oral drug called pritelivir against standard treatments (foscarnet, cidofovir, or imiquimod) for herpes infections that no longer respond to acyclovir. It involved 158 immunocompromised participants, such as those with HIV or organ transplants. The goal was to see if pritelivir could heal lesions faster and more safely.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance
Pritelivir (oral tablet)
What this could lead to
If it works, this could provide a new treatment option for people with weakened immune systems who have herpes infections that don't respond to standard acyclovir therapy.
What could go wrong
This is a completed Phase 3 trial, but results are not yet widely available. The drug may not prove superior to existing treatments like foscarnet or cidofovir, which have their own side effects.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Locations

  • AP-HP Hopital Bichat - Claude Bernard

    Paris, 75018, France

  • AP-HP Hopital Necker-Enfants Malades

    Paris, 75015, France

  • ARENSIA Exploratory Medicine LLC

    Kyiv, 01135, Ukraine

  • AZ Delta

    Roeselare, 8800, Belgium

  • AZ Sint-Jan Brugge

    Bruges, 8000, Belgium

  • Alberta Health Services Cross Cancer Institute at the University of Alberta

    Edmonton, Alberta, T6G 1Z2, Canada

  • Arke SMO S.A. de C.V.

    Veracruz, 91910, Mexico

  • Atrium Health Wake Forest Baptist

    Winston-Salem, North Carolina, 27157, United States

  • Brigham and Women's Hospital

    Boston, Massachusetts, 02115, United States

  • CHU Limoges - Centre national de reference des Herpes virus

    Limoges, 87042, France

  • CHU de Nantes

    Nantes, 44093, France

  • Cedars-Sinai Medical Center

    Los Angeles, California, 90048, United States

  • Centre Hospitalier Universitaire Saint Pierre

    Brussels, B1000, Belgium

  • Centro de Investigacion Clinica GRAMEL S.C.

    Distrito Federal, 03720, Mexico

  • Centro de Investigacion Farmaceutica Especializado de Occidente S.C.

    Guadalajara, 44160, Mexico

  • Chaim Sheba Medical Center

    Tel Litwinsky, 5265601, Israel

  • Cincinnati Children's Hospital Medical Center

    Cincinnati, Ohio, 45229, United States

  • City of Hope

    Duarte, California, 91010, United States

  • David H. Koch Center at Memorial Sloan Kettering Cancer Center

    New York, New York, 10021, United States

  • Department of Medicine J. H. Stroger Hospital of Cook County

    Chicago, Illinois, 60612, United States

  • Duke University Medical Center - Division of Infectious Diseases

    Durham, North Carolina, 27710, United States

  • Emory Hospital Midtown Infectious Disease Clinic

    Atlanta, Georgia, 30308, United States

  • Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico di Milano

    Milan, 20122, Italy

  • Fondazione IRCCS Policlinico San Matteo

    Pavia, 27100, Italy

  • Fred Hutchinson Cancer Research Center

    Seattle, Washington, 98109, United States

  • Freeman Hospital

    Newcastle upon Tyne, NE7 7DN, United Kingdom

  • General Hospital of Athens - Laiko

    Athens, 11527, Greece

  • Grande Ospedale Metropolitano "Bianchi Melacrino Morelli"

    Calabria, 89133, Italy

  • Hopitaux universitaires de Geneve

    Geneva, 1205, Switzerland

  • Hospital Rawson

    Córdoba, 5000, Argentina

  • Hôpital Saint Louis - AP-HP

    Paris, 75010, France

  • Instituto FIDES

    La Plata, CP 1900, Argentina

  • Instituto de Investigaciones Aplicadas a la Neurociencia A.C

    Durango, 34000, Mexico

  • Johns Hopkins University School of Medicine

    Baltimore, Maryland, 21205, United States

  • Kings Country Hospital Center

    Brooklyn, New York, 11203, United States

  • LLC Diakor

    Tbilisi, 0159, Georgia

  • LSU Health Baton Rouge Pulmonary Clinic

    Baton Rouge, Louisiana, 70809, United States

  • Lee's Summit MO United States 64086

    Lee's Summit, Missouri, 64086, United States

  • Links Clinical Trials

    Miami, Florida, 33176, United States

  • MD Anderson Cancer Center

    Houston, Texas, 77030-4009, United States

  • Melbourne Health - Royal Melbourne Hospital

    Parkville, 3050, Australia

  • Metro Infectious Disease Consultants - Atlanta

    Decatur, Georgia, 30033, United States

  • Metro Infectious Disease Consultants, LLC

    Burr Ridge, Illinois, 60527, United States

  • Metro Infectious Disease Consultants, LLC - Huntsville

    Huntsville, Alabama, 35801, United States

  • Midland Florida Clinical Research Center, LLC

    DeLand, Florida, 32720, United States

  • Midway Immunology and Research Center (MIRC)

    Ft. Pierce, Florida, 34982, United States

  • Multiprofile Clinic Consilium Medulla LTD

    Tbilisi, 0186, Georgia

  • Nhs Lothian

    Edinburgh, EH4 2XU, United Kingdom

  • Penn State Health Milton S. Hershey Medical Center

    Hershey, Pennsylvania, 17033, United States

  • Regional University General Hospital of Heraklion

    Heraklion, 71110, Greece

  • Research Department of Haematology, UCL Cancer Institute

    London, WC1E 6BT, United Kingdom

  • Rutgers Robert Wood Johnson Medical School

    New Brunswick, New Jersey, 08901, United States

  • Sanatorio Mayo Privado S.A.

    Córdoba, 5000, Argentina

  • Tulane University - School of Medicine

    New Orleans, Louisiana, 70112, United States

  • Unidad de Investigacion CIMA SC

    Chihuahua City, 64718, Mexico

  • Universitaetsspital Basel

    Basel, 4031, Switzerland

  • Universitaetsspital Zuerich

    Zurich, 8091, Switzerland

  • University Arizona - Department of Medicine Arizona Health Sciences Center

    Tucson, Arizona, 85724, United States

  • University of Alabama at Birmingham

    Birmingham, Alabama, 35205, United States

  • University of California, Division of Infectious Diseases

    Sacramento, California, 95817, United States

  • University of Florida (UF) - Division of Infectious Disease

    Gainesville, Florida, 32610, United States

  • University of Minnesota

    Minneapolis, Minnesota, 55455, United States

  • University of Nebraska Medical Center

    Omaha, Nebraska, 68198, United States

  • University of Pittsburgh Medical Center

    Pittsburgh, Pennsylvania, 15232, United States

  • University of South Alabama

    Mobile, Alabama, 36604, United States

  • University of South Florida

    Tampa, Florida, 33606, United States

  • Universitätsklinikum Essen

    Essen, 45147, Germany

  • Universitätsklinikum Köln

    Cologne, 50937, Germany

  • Universitätsklinikum Würzburg

    Würzburg, 97080, Germany

  • Westmead Hospital, Centre for Infectious Disease and Microbiology

    Westmead, 2145, Australia