A Study to Evaluate the Efficacy, Safety and Tolerability of Fixed Doses of Intranasal Esketamine in Japanese Participants With Treatment Resistant Depression

Summary

The purpose of this study is to evaluate the efficacy of fixed dosed intranasal esketamine compared to intranasal placebo, as an add-on to an oral antidepressant in Japanese participants with treatment-resistant depression (TRD), in improving depressive symptoms.

Timeline

Start

2016-12-12

Primary completion

2019-08-19

Completion

2019-12-13

Publications

• Ohnishi T, Wakamatsu A, Kobayashi H. Different symptomatic improvement pattern revealed by factor analysis between placebo response and response to Esketamine in treatment resistant depression. Psychiatry Clin Neurosci. 2022 Aug;76(8):377-383. doi: 10.1111/pcn.13379. Epub 2022 Jun 9.
• Takahashi N, Yamada A, Shiraishi A, Shimizu H, Goto R, Tominaga Y. Efficacy and safety of fixed doses of intranasal Esketamine as an add-on therapy to Oral antidepressants in Japanese patients with treatment-resistant depression: a phase 2b randomized clinical study. BMC Psychiatry. 2021 Oct 25;21(1):526. doi: 10.1186/s12888-021-03538-y.

Drugs

Indications