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Clinical data
Other namesTS-1211
Routes of
By mouth

TS-121 (THY1773) is an orally active, selective vasopressin V1B receptor antagonist which is under development by Taisho Pharmaceutical for the adjunctive treatment of major depressive disorder.[1][2][3] As of May 2017, it is in phase II clinical trials for this indication.[1][2][4]

See also[edit]


  1. ^ a b "TS 121 -". AdisInsight. Springer Nature Switzerland AG.
  2. ^ a b "New Drug Pipeline - Taisho Pharmaceutical Holdings".
  3. ^ Kamiya M, Sabia HD, Marella J, Fava M, Nemeroff CB, Umeuchi H, Iijima M, Chaki S, Nishino I (September 2020). "Efficacy and safety of TS-121, a novel vasopressin V1B receptor antagonist, as adjunctive treatment for patients with major depressive disorder: A randomized, double-blind, placebo-controlled study". Journal of Psychiatric Research. 128: 43–51. doi:10.1016/j.jpsychires.2020.05.017. PMID 32521250. S2CID 219587135.
  4. ^ Inatani S, Mizuno-Yasuhira A, Kamiya M, Nishino I, Sabia HD, Endo H (May 2021). "Prediction of a clinically effective dose of THY1773, a novel V1B receptor antagonist, based on preclinical data". Biopharmaceutics & Drug Disposition. 42 (5): 204–217. doi:10.1002/bdd.2273. PMC 8252455. PMID 33734452.

External links[edit]

  • Clinical trial number NCT03093025 for "A Study to Evaluate the Safety and Efficacy of TS-121 as an Adjunctive Treatment for Major Depressive Disorder" at ClinicalTrials.gov