# A Study to Compare the Efficacy, Safety, and Tolerability of JNJ-42847922 Versus Quetiapine Extended-Release as Adjunctive Therapy to Antidepressants in Adult Participants With Major Depressive Disorder Who Have Responded Inadequately to Antidepressant Therapy

> **NCT03321526** · PHASE2 · COMPLETED · sponsor: **Janssen Research & Development, LLC** · enrollment: 107 (actual)

## Conditions studied

- Depressive Disorder, Major

## Interventions

- **DRUG:** JNJ-42847922
- **DRUG:** Placebo Matching to JNJ-42847922
- **DRUG:** Quetiapine XR
- **DRUG:** Placebo Matching to Quetiapine XR
- **DRUG:** Selective Serotonin Reuptake Inhibitor (SSRI)
- **DRUG:** Serotonin-Norepinephrine Reuptake Inhibitor (SNRI)

## Key facts

- **NCT ID:** NCT03321526
- **Lead sponsor:** Janssen Research & Development, LLC
- **Sponsor class:** INDUSTRY
- **Phase:** PHASE2
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2017-12-12
- **Primary completion:** 2019-06-13
- **Final completion:** 2019-06-27
- **Target enrollment:** 107 (ACTUAL)
- **Last updated:** 2025-04-29


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT03321526

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT03321526, "A Study to Compare the Efficacy, Safety, and Tolerability of JNJ-42847922 Versus Quetiapine Extended-Release as Adjunctive Therapy to Antidepressants in Adult Participants With Major Depressive Disorder Who Have Responded Inadequately to Antidepressant Therapy". Retrieved via AI Analytics 2026-05-28 from https://api.ai-analytics.org/clinical/NCT03321526. Licensed CC0.

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