Pharmacopsychiatry 2005; 38(1): 24-29
DOI: 10.1055/s-2005-837768
Original Paper
© Georg Thieme Verlag KG Stuttgart · New York

Randomized, Double-Blind Study of SR142801 (Osanetant). A Novel Neurokinin-3 (NK3) Receptor Antagonist in Panic Disorder with Pre- and Posttreatment Cholecystokinin Tetrapeptide (CCK-4) Challenges

G. Kronenberg1 , P. Berger2 , R. F. Tauber3 , B. Bandelow4 , V. Henkel5 , I. Heuser1
  • 1Psychiatric Department, Charité-CBF, Free University of Berlin, Germany
  • 2Psychiatric Department, University of Vienna, Austria
  • 3Psychiatric Department, University of Jena, Germany
  • 4Psychiatric Department, University of Goettingen, Germany
  • 5Sanofi-Synthelabo Research, Germany
Further Information

Publication History

Received: 16.2.2004 Revised: 31.3.2004

Accepted: 2.7.2004

Publication Date:
11 February 2005 (online)

Objective: The present study was designed to examine the efficacy and tolerability of the non-peptide neurokinin-3 (NK3) receptor antagonist SR142801 in outpatients suffering from panic disorder. Methods: In a pilot study, 52 patients who were responders to a cholecystokinin tetrapeptide (CCK-4) challenge were randomized to four weeks of treatment with SR142801 (n = 36) or placebo (n = 16). Panic symptoms were assessed on weekly visits and a second CCK-4 challenge was performed at the end of the double-blind placebo controlled treatment period. Tolerability of SR142801 was generally good. Results: The proportion of patients who had at least one adverse event (AE) in the SR142801 group and the placebo group was similar (58.3 and 50 %, respectively). Independent of treatment group, patients’ overall panic symptomatology was substantially improved at the end of the treatment. Conclusion: With regard to efficacy of outcome, the compound was not significantly different from placebo. However, post-CCK-4 plasma prolactin concentrations showed a significant difference between placebo and SR142801.

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Isabella Heuser, MD, PhD

Department of Psychiatry

Charité-CBF

Free University Berlin

Eschenallee 3

14050 Berlin

Germany

Phone: +49 30 8445 8701

Fax: +49 30 8445 8726 ·

Email: isabella.heuser@charite.de

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