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.

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Kronenberg G, Berger P, Tauber RF, Bandelow B, Henkel V, Heuser I

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.

Pharmacopsychiatry. 2005 Jan;38(1):24-9.

PubMed ID
15706463 [ View in PubMed
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Abstract

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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