Pimavanserin (Nuplazid), an atypical antipsychotic approved to treat hallucinations and delusions in Parkinson’s disease, shows promise as a treatment for patients with refractory schizophrenia who fail to respond to clozapine, a retrospective study suggests.
“Within a month, sometimes 2 months, hallucinations and delusions that have persisted for years were completely gone,” said lead author Henry A. Nasrallah, MD, in an interview. The study was published in Schizophrenia Research (https://www.sciencedirect.com/science/article/pii/S0920996419300787).
Dr. Nasrallah and his colleagues launched the study in a bid to help “the most desperate group of patients” with schizophrenia – the 60% of those with refractory psychosis who do not respond to clozapine. “This group of patients is so desperate that psychiatrists have used everything in our pharmacopeia,” said Dr. Nasrallah
The results, Dr. Nasrallah said, were remarkable. “Not only did they get relief from their delusions and hallucinations, but nursing staff reported they were much more sociable and affable, getting out of their rooms, and mixing and mingling. It seems to help them beyond suppressing delusions and hallucinations. It made them more sociable and pleasant.”
Patients were able to avoid blood tests and the “sometimes life-threatening side effects of clozapine,” he said. According to the study, no patients needed to discontinue treatment because of safety or tolerability.