A Study to Investigate the Efficacy and Safety of Balovaptan (RO5285119) in Participants With Autism Spectrum Disorder (ASD)
Autism Spectrum Disorder
About this trial
This is an interventional treatment trial for Autism Spectrum Disorder
Eligibility Criteria
Inclusion Criteria:
- Fluent in English
- Diagnostic and Statistical Manual of Mental Disorders, 5th Edition (DSM-5) criteria for ASD or International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD10) criteria for Autism diagnosis confirmed by Autism Diagnostic Observational Schedule (ADOS-2) criteria
- Social Responsiveness Scale, second edition (SRS-2) (T-score) >= 66
- Clinical Global Impressions of Severity (CGI-S) >= 4 (moderately ill) at screening
- IQ >= 70 as assessed by Wechsler Abbreviated Scale of Intelligence Scale: Second Edition (WASI-II) or Wechsler Preschool and Primary Scale of Intelligence: Fourth Edition (WPPSI-IV) intelligence test
- Language, hearing, and vision compatible with the study measurements as judged by the investigator
Inclusion Criteria for the OLE:
- Have completed the blinded treatment phase of the study OR were required to stop dosing at or before Week 8
- Have no adverse events that would prohibit starting the OLE
Exclusion Criteria:
- Initiation of a major change in psychosocial intervention (including investigational) within 4 weeks prior to screening
- Unstable or uncontrolled clinically significant psychiatric and/or neurological disorder that may interfere with the safety or efficacy endpoints
- Known personal or family history of cerebral aneurysm
- Risk of suicidal behavior
- Seizure within the past 6 months
- Medical history of alcohol or substance abuse/dependence
- Concurrent cardio-vascular disease not considered well controlled by the Investigator
- Clinically significant abnormality on electrocardiogram at screening
- Concomitant disease or condition (pulmonary, gastro-intestinal, hepatic, renal, metabolic, immunological system, or obesity that could interfere with the conduct of the study
- Evidence for current gastro-intestinal bleeding, e.g., active stomach ulcer disease
- History of coagulopathies, bleeding disorders, or blood dyscrasias
- Positive serology for hepatitis B (HBV), hepatitis C (HCV), human immunodeficiency virus (HIV) 1, or HIV 2
- Confirmed clinically significant abnormality in parameters of hematology, clinical chemistry, coagulation, or urinalysis
- Medical history of malignancy if not considered cured
- Participation in an investigational drug study within 90 days or 5 times the half-life of the investigational molecule (whichever is longer) prior to randomization
- Loss of blood over 250 milliliters within three months prior to screening
- Allowed medications have not been stable since 4 weeks before screening, and allowed medications for treatment of epilepsy have not been stable since 3 months before screening
- Use of prohibited medications within 2 weeks prior to screening visit or 5 times the half-life prior to randomization (whichever is longer)
Sites / Locations
- Harmonex Neuroscience Research
- Southwest Autism Research & Resource Center
- NRC Research Institute
- PCSD Feighner Research
- University of California at San Francisco
- Children's Hospital of Colorado
- DBA IMMUNOe Int'l Res Center
- Yale University / Yale-New Haven Hospital
- Sarkis Clinical Trials
- Segal trials
- Medical Research Group of Central Florida
- APG- Advanced Psychiatric Group
- USF Rothman Center
- Rush University Medical Center
- Capstone Clinical Research
- Kennedy Krieger Institute
- Massachusetts General Hospital
- Boston Childrens Hospital
- Massachusetts General Hospital; Lurie Center for Autism
- UMASS Medical School
- University of Minnesota; Clin. Neuro Research Unit
- St. Charles Psychiatric Associates
- Midwest Childrens Health Research Institute
- Albert Einstein College of Medicine
- Center for Autism and the Developing Brain
- Nathan S. Kline Institute for Psychiatric Research
- University of Rochester
- Richmond Behavioral Associates
- DUKE SCHOOL OF MEDICINE;Duke Center for Autism and Brain Development
- Cincinnati Children's Hospital Medical Center
- University Hospitals
- Ohio State University
- Cutting Edge Research Group
- Suburban Research Associates
- Children's Hospital of Philadelphia;Allergy/Immunology Department
- UPMC Western Psychiatric Institute and Clinic
- Vanderbilt University Medical Center
- BioBehavioral Research of Austin, PC
- Relaro Medical Trials
- Red Oak Psychiatry Associates, PA
- Road Runner Research
- Northwest Clinical Research Center
- Pacific Institute of Medical Sciences
- Core Clinical Research
- Seattle Children's Research Institute; Psychiatry and Behavioral Medicine
Arms of the Study
Arm 1
Arm 2
Arm 3
Placebo Comparator
Experimental
Experimental
Placebo
Balovaptan (RO5285119) 10 mg/d equivalent
Balovaptan (RO5285119) 4 mg/d equivalent
Participants received a matching placebo orally. Approximate treatment duration was up to 24 weeks.
Participants received age-adjusted total daily oral dose approximately equivalent to the adult dose of 10 milligrams per day (mg/d) of balovaptan (RO5285119). Approximate treatment duration was up to 24 weeks (up to 52 additional weeks for those enrolled in the OLE).
Participants received age-adjusted total daily oral dose approximately equivalent to the adult dose of 4 mg/d of balovaptan (RO5285119). Approximate treatment duration was up to 24 weeks. This arm is open only to those participants enrolled prior to Version 6 of the study protocol.