Esketamine vs Midazolam for MDD with Fluctuating Antidepressant Response: A Double-Blind Pilot RCT (Xiao 2023, Beijing Anding Hospital)
Single-centre, double-blind, midazolam-controlled randomised clinical trial (JAMA Netw Open 2023; Xiao C, Zhou J, Li A, Zhang L; Beijing Anding Hospital, Capital Medical University, China; PMID 37578792). Participants: 30 adults with MDD and fluctuating antidepressant response (FAR), randomised 1:1. Intervention: single IV esketamine 0.2 mg/kg vs IV midazolam 0.045 mg/kg over 40 minutes, both in 50 mL normal saline; participants maintained on current oral antidepressant. Recruitment: August 2021–January 2022. Primary outcome: MADRS response (≥50% reduction) at 2 weeks. Secondary: MADRS remission, CGI-S, safety (CADSS, YMRS, C-SSRS). No formal sample size calculation; pilot study. CT.gov: 0 hits; PubMed DataBankList empty. Chinese RCTs post-2018 are typically ChiCTR-registered but number not recovered from available data.
Study Arms & Interventions
Esketamine-treated group
experimentalParticipants received a single subanesthetic intravenous dose of esketamine while maintaining their original oral antidepressant regimen.
Interventions
- Esketamine0.2 mg/kgvia IV• single dose• 1 doses total
Administered over 40 minutes via syringe pump; participants maintained ongoing adequate antidepressant treatment (ADT).
Midazolam-controlled group
active comparatorParticipants received a single intravenous dose of midazolam while maintaining their original oral antidepressant regimen.
Interventions
- Placebo0.045 mg/kgvia IV• single dose• 1 doses total
Administered over 40 minutes via syringe pump; participants maintained ongoing adequate antidepressant treatment (ADT).
Primary Results(1 publication)
Participants
Response Rates
≥50% reduction in Montgomery-Åsberg Depression Rating Scale (MADRS)
MADRS score of 10 or lower (remission)
Adverse Events (from all publications)
| Arm / Group | n | Any TEAE | Severe | Serious | Discont. |
|---|---|---|---|---|---|
| Esketamine-treated groupexperimental | 15 | — | — | 0(0.0%) | 1(6.7%) |
| Midazolam-controlled groupactive_comparator | 15 | — | — | 0(0.0%) | 0(0.0%) |
* 1 participant discontinued due to withdrawal of consent (job change). No serious adverse events were observed.
* No serious adverse events were observed.
Study Details
- StatusCompleted
- Typeinterventional
- DesignRandomizeddouble Blind
- Target Enrollment30 participants
- TimelineStart: 2021-08-01End: 2022-01-31
- Compounds