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Completed Phase 2 Interventional

A Study of RG1662 in Adults and Adolescents With Down Syndrome (CLEMATIS)

ClinicalTrials.gov ID: NCT02024789

Public ClinicalTrials.gov record NCT02024789. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Nov 7, 2026, 4:17 AM EST

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Official title

A MULTI-CENTER, RANDOMIZED, DOUBLE-BLIND, PLACEBO-CONTROLLED PHASE 2 STUDY OF THE EFFICACY, SAFETY AND TOLERABILITY OF RG1662 IN ADULTS AND ADOLESCENTS WITH DOWN SYNDROME (CLEMATIS)

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

This multi-center, randomized, double-blind, 3-arm, parallel-group, placebo-controlled study will evaluate the efficacy and safety of RG1662 in adults and adolescents with Down syndrome. Subjects will be randomized to receive RG1662 either at low or high dose or placebo orally twice daily for 26 weeks.

Study identification

NCT ID
NCT02024789
Recruitment status
Completed
Study type
Interventional
Phase
Phase 2
Lead sponsor
Hoffmann-La Roche
Industry
Enrollment
173 participants

Conditions and interventions

Conditions

Interventions

Drug

Eligibility (public fields only)

Age range
12 Years to 30 Years
Sex
All
Healthy volunteers
Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
May 5, 2014 (Actual)
Primary completion
May 4, 2016 (Actual)
Completion
May 4, 2016 (Actual)
Last update posted
Oct 25, 2017

2014 – 2016

United States locations

U.S. sites
9
U.S. states
8
U.S. cities
9
Facility City State ZIP Site status
Univ of CA San Diego; Neurosciences Comp.Alzheimer's La Jolla California 92037 —
University of California DAVIS Medical Center; M.I.N.D. Institute, Section of Developmental Behavior Sacramento California 95817 —
Emory University School of Medicine; Department of Human Genetics & Pediatrics Decatur Georgia 30033 —
Rush University Medical Center Chicago Illinois 60612 —
Johns Hopkins Hospital. Baltimore Maryland 21287 —
Massachusette General Hospital; Medical Genetics Boston Massachusetts 02114 —
Duke Clin Rsch Institute Durham North Carolina 27710 —
University of Utah School of Medicine; Department of Pediatrics Salt Lake City Utah 84112 —
University of Wisconsin Madison, Waisman Center Madison Wisconsin 53705 —

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

Non-U.S. locations

This page focuses on the U.S. directory. The official record also lists 28 non-U.S. sites.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT02024789, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted Oct 25, 2017 · Synced Nov 7, 2026

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Open the official record

The complete public registry record, listed eligibility criteria, and available contact information for NCT02024789 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →