Autism irritability drug trial ends early: what happened?
NCT ID NCT05555615
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looked at the long-term safety of pimavanserin for treating irritability in children and teens (ages 5-17) with autism. It was an extension of an earlier 6-week study, lasting 52 weeks. The trial was terminated early, and results are not yet fully available.
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
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1st Allergy and Clinical Research Group, d/b/a IMUNOe Research Centers
Centennial, Colorado, 80112, United States
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AIM Trials, LLC
Plano, Texas, 75093, United States
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AMR Baber Research Incorporated
Naperville, Illinois, 60563, United States
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APG Research, LLC
Orlando, Florida, 32803-3809, United States
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Azienda Ospedaliera Universitaria "Federico II"
Naples, 80131, Italy
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Azienda Ospedaliera Universitaria Integrata di Verona (AOUI)
Verona, 37126, Italy
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Békés Megyei Központi Kórház
Gyula, H-5700, Hungary
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CHU de Nantes
Nantes, 44093, France
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Centre Hospitalier Charles Perrens
Bordeaux, 33076, France
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Centre de Ressources Autisme Rhône-Alpes - Center Hospitalier le Vinatier
Bron, 69678, France
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Centrum Badań Klinicznych PI-House Sp. z o.o.
Gdansk, 80-546, Poland
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Centrum Neuropsychiatrii Neuromed SP ZOZ
Wroclaw, 54-238, Poland
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Children's Health Queensland Hospital and Health Service
South Brisbane, Queensland, 4101, Australia
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Children's Research Institute
Washington D.C., District of Columbia, 20010, United States
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Cincinnati Children's Hospital Medical Center
Cincinnati, Ohio, 45229, United States
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Clinical Center of Vojvodina, Clinic for Psychiatry
Novi Sad, 21000, Serbia
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Clinical Research of Southern Nevada, LLC
Las Vegas, Nevada, 89128, United States
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Cortica Inc.
San Rafael, California, 94903, United States
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Cortica Inc. (Glendale)
Glendale, California, 91361, United States
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ERG Clinical Research - New York, PLLC DBA Richmond Behavioral Associates
Staten Island, New York, 10314, United States
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Eastside Therapeutic Resource, Inc. dba Core Clinical Research
Everett, Washington, 98201, United States
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Fondazione Istituto Neurologico Nazionale Casimiro Mondino - IRCCS
Pavia, 27100, Italy
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Fondazione PTV - Policlinico Tor Vergata
Rome, 00133, Italy
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Gdańskie Centrum Zdrowia Sp. z o.o.
Gdansk, 80-542, Poland
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Ginemedica Sp. Zoo, S. K.
Wroclaw, 50-414, Poland
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Hospital Clínic de Barcelona
Barcelona, 08036, Spain
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Hospital General de Alicante
Alicante, 03010, Spain
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Hospital Universitari Vall d'Hebron
Barcelona, 08035, Spain
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Institut Global d´Atenció Integral del Neurodesenvolupament (IGAIN)
Barcelona, 08007, Spain
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Institute of Mental Health
Belgrade, 11000, Serbia
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L'Assistance Publique - Hôpitaux de Paris, labélisé Institut Carnot
Paris, 75019, France
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La Nostra Famiglia - Scientifica IRCCS Eugenio Medea
Bosisio Parini, LC, 23842, Italy
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Magyarországi Református Egyház Bethesda Gyermekkórháza
Budapest, H-1146, Hungary
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MedicMental Indywidualna Specjalistyczna Praktyka Lekarska Monika Szewczuk-Boguslawska
Wroclaw, 54-617, Poland
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Medical University of South Carolina
Charleston, South Carolina, 29425, United States
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Monash Health
Clayton, Victoria, 3168, Australia
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Murdoch Children's Research Institute
Parkville, Victoria, 3052, Australia
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NAVICULA - Centrum Diagnozy i Terapii Autyzmu
Lodz, 91-129, Poland
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Policlinico Riuniti - Azienda Ospedaliero Universitaria
Foggia, 71122, Italy
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Quest Therapeutics of Avon Lake dba Haidar Almhana Nieding LLC
Avon Lake, Ohio, 44012, United States
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Red Oak Psychiatry Associates, PA
Houston, Texas, 77090, United States
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Relaro Medical Trials, LLC
Dallas, Texas, 75243, United States
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Southwest Autism Research and Resource Center
Phoenix, Arizona, 85006, United States
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Szegedi Tudományegyetem
Szeged, H-6725, Hungary
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The Children's Hospital of Philadelphia
Philadelphia, Pennsylvania, 19146, United States
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The EHS Medical Practice, PA, D/B/A Sarkis Clinical Trials
Gainesville, Florida, 32607, United States
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University Clinical Center Kragujevac, Clinic for Psychiatry
Kragujevac, 34000, Serbia
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University Clinical Center Nis, Center for Mental Health
Niš, 18000, Serbia
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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