Savoxepine versus haloperidol. Reasons for a failed controlled clinical trial in patients with an acute episode of schizophrenia.

Abstract:

:Savoxepine, an atypical neuroleptic compound developed in the 1980s, was believed to act via selective limbic dopamine D(2)-receptor blockade. The results of the presented double-blind, randomised, controlled clinical trial comparing savoxepine (n = 58) with haloperidol (n = 29) did not confirm the preclinical data suggesting that savoxepine would produce fewer extrapyramidal symptoms than the comparator. Animal data and PET-results obtained a posteriori suggested that this unfavourable outcome may have been due to the conventional, step-wise dose increase strategy used in the study leading to a high dopamine D(2)-receptor occupancy in the striatum thus eliciting EPS. Using either a slower dose-titration or a high, single loading dose followed by a low maintenance dosing may have offered the possibility to obtain a good antipsychotic effect together with low incidence of EPS. In future clinical trials with new neuroleptics, the preclinical data should be carefully evaluated, and drug brain kinetic parameters taken into consideration.

authors

Volz HP,Möller HJ,Gerebtzoff A,Bischoff S

doi

10.1007/s00406-002-0364-7

subject

Has Abstract

pub_date

2002-04-01 00:00:00

pages

76-80

issue

2

eissn

0940-1334

issn

1433-8491

journal_volume

252

pub_type

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