CI

At a glance

ClinicalIndex Comparison Record
Phase 4Completed· 76 enrolled
Drug / intervention
Welbutrin XL +1 moredrug
Likely dose
Not stated in record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT02562430
NCT02562430Phase 4Completed

Neurobiological Underpinnings of Placebo Response in Depression

Massachusetts General Hospital·interventional·Posted Sep 29, 2015·Updated May 14, 2026

In Brief

A Phase 4 clinical trial evaluating Welbutrin XL and Placebo for Depression. Completed, enrolled 76 participants across 1 site.

Detailed Summary

In summary, the proposed research is novel with respect to design, technology, and its multi-level integration probing psychological and neurobiological constructs assumed to be crucially implicated in placebo response and has significant clinical and research implications for the future. Specifically, the future implications include: 1) identification of biomarkers and biosignatures of placebo responders, 2) new possibilities to understanding and manipulating the system, 3) possibly decreasing or eliminating a major confounder in clinical trials and drug development, and 4) refining treatments with novel drugs that decrease (in clinical trial) or increase (in clinical practice) the placebo response.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
ConditionsDepression
CountriesUnited States
Collaborators--

Timeline

Phase 4CompletedFinished
20162017201820192020202120222023202420252026
First PostedSep 29, 2015
Enrollment StartAug 1, 2016
Primary CompletionAug 1, 2022
TodayJul 2, 2026
Enrollment to primary: 6 yearsPosted 10.8 years ago

Interventions

Welbutrin XLdrug

12.5% of participants will receive Welbutrin XL in phase 1 of the study.

Placebodrug

87.5% of subjects will be randomized to placebo in phase 1 of the study.