Lurasidone: a new drug in development for schizophrenia.
BACKGROUND: Lurasidone is a novel psychotropic agent in development for the treatment of schizophrenia and bipolar disorder. OBJECTIVES: This paper describes the development of lurasidone, including its receptor binding affinities, pharmacokinetics, CNS activity in rodent models and results of early clinical efficacy and safety studies in humans. METHODS: The available literature on lurasidone was reviewed, including abstracts from medical congresses supplemented by data on file with the sponsor. RESULTS/CONCLUSIONS: Lurasidone has a high affinity for dopamine D(2) and serotonin 5-HT(2A) receptors as well as for receptors implicated in enhancement of cognitive function (e.g., 5-HT(7,) 5-HT(1A), alpha(2c)). Lurasidone has no affinity for muscarinic M(1) and histamine H(1) receptors and minimal affinity for alpha(1) adrenoceptors, dopamine D(1) and D(3) receptors, serotonin 5-HT(2C) receptors and alpha(2A) adrenoceptors. Phase II efficacy data indicate that lurasidone doses from 40 to 120 mg/day are effective in the treatment of schizophrenia, with positive symptom reduction exceeding that for negative symptoms, as seen with other antipsychotics. Preclinical data indicate that lurasidone reverses MK-801 induced learning and memory impairment in rodents, and active comparator data from a Phase Ib study of lurasidone 120 mg/day versus ziprasidone 160 mg/day also found a signal for effects on cognition. Phase II studies suggest that lurasidone has no significant QTc prolongation and a benign metabolic profile.[1]References
- Lurasidone: a new drug in development for schizophrenia. Meyer, J.M., Loebel, A.D., Schweizer, E. Expert. Opin. Investig. Drugs (2009) [Pubmed]
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