Polypharmacy Avoided
Another recent study retrospectively analyzed medical records of close to 40 adult patients with BPD I who were receiving treatment with aripiprazole for bipolar depression and then switched to cariprazine.
“We wanted to conduct a study in depressed patients who had gained weight on aripiprazole and then directly switched to cariprazine. It improved their mood and helped mitigate weight gain, thereby avoiding polypharmacy of additional antidepressants and weight loss agents,” said study investigator Maxwell Zachary Price, a medical student at Hackensack Meridian School of Medicine, Nutley, New Jersey.
“In our general outpatient psychiatry practice, we’ve treated many adult patients with oral aripiprazole for maintenance of BPD,” the study’s senior investigator, Richard Price, MD, clinical assistant professor of psychiatry at Weill Cornell Medical College, New York City, added.
Aripiprazole is associated with weight gain. Moreover, aripiprazole “hasn’t shown efficacy in managing BPD,” he said.
Most patients in Dr. Price’s practice are insured through Medicaid, which mandates treatment with aripiprazole before covering cariprazine. “We noticed their weight had been creeping up over the years, and they also were experiencing depressive symptoms,” he said.
The requirement to initiate treatment with aripiprazole before switching to cariprazine offered Dr. Price an opportunity to compare the two agents in this real-world setting by retrospectively reviewing the charts of 37 patients with BPD (23 females and 14 males who made the switch). The patients had been taking aripiprazole for a mean duration of 94.9 weeks and had experienced a mean increase in body weight of 16.1% ± 12.3% on aripiprazole before switching.
Patients who were taking 2 mg-10 mg of aripiprazole were switched to 1.5 mg of cariprazine, while those taking ≥ 15 mg of aripiprazole were switched to 3 mg of cariprazine.
“Patients tolerated the switch well and maintained stability during the transition,” and “no patients discontinued cariprazine during the study,” Dr. Price said.
After a mean duration of 36.7 weeks (range, 1-127 weeks), the patients showed a decrease in Clinical Global Impression-Bipolar Severity of Illness Scale score from a mean of 5.0 ± 0.9 to a mean of 2.8 ± 0.7 (t = −12.75, P < .00001).
The patients’ weight dropped from a mean of 90.3± 21.5 kg on aripiprazole to a mean of 83.9 ± 19.2 kg on cariprazine (t = −4.22, P < .001).
Two patients experienced initial nausea that resolved by taking the medication with food, and two experienced initial restlessness that resolved with dosage reduction.
“We found that the patients were lighter in mood, body habitus and weight, and less agitated and their mental alertness and concentration improved as well,” said Dr. Price. He hopes that further research in randomized blinded trials will corroborate the findings.
Hypothesis-Generating Research
Joseph Cerimele, MD, MPH, associate professor of psychiatry and behavioral sciences, University of Washington, Division of Population Health, UW Medicine, Seattle, Washington, said the research findings are “hypothesis-generating.”
Dr. Ciremele, who wasn’t involved with either study, said many clinicians and researchers are trying to tailor treatment options to match patient characteristics, and these studies and other similar research, “help us all ask questions related to concurrent symptoms in bipolar depression.”
However, the post hoc analysis was a secondary analysis of an efficacy trial where individuals with concurrent anxiety disorders were excluded. “So, a next step might be to evaluate this and other treatments in individuals with BPD and concurrent anxiety disorders,” he said.
The study by Jain et al was funded by AbbVie. Dr. McIntyre had received research grant support from CIHR/GACD/National Natural Science Foundation of China and the Milken Institute; speaker/consultation fees from Lundbeck, Janssen, Alkermes, Neumora Therapeutics Inc., Boehringer Ingelheim, Sage, Biogen, Mitsubishi Tanabe, Purdue, Pfizer, Otsuka, Takeda, Neurocrine, Sunovion, Bausch Health, Axsome Therapeutics, Novo Nordisk, Kris, Sanofi, Eisai, Intra-Cellular Therapies, NewBridge Pharmaceuticals, Viatris, Abbvie, and Atai Life Sciences. Dr. McIntyre is the CEO of Braxia Scientific Corp. His coauthors’ disclosures are listed in the original paper. Dr. Price had received honoraria from AbbVie, Alkermes, Allergan, Intra-Cellular Therapies, Janssen, Jazz, Lundbeck, Neuronetics, Otsuka, and Supernus. Mr. Price and Dr. Cerimele reported no relevant financial relationships.
A version of this article appeared on Medscape.com.