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Pramipexole/ondansetron

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Pramipexole/ondansetron
Combination of
Pramipexole Dopamine D2-like receptor agonist
Ondansetron Serotonin 5-HT3 receptor antagonist
Clinical data
Other namesOndansetron/pramipexole; ALTO-207; ALTO207; CTC-501; CTC501

Pramipexole/ondansetron, also known by its developmental code name ALTO-207 and formerly as CTC-501, is a combination of pramipexole, a dopamine D2-like receptor agonist, and ondansetron, a serotonin 5-HT3 receptor antagonist, which is under development for treatment-resistant major depressive disorder (TRD or MDD). [1] [2] The inclusion of ondansetron is to reduce the side effects of pramipexole like nausea and vomiting in order to allow for higher doses of pramipexole that may be more effective for treatment of depression as well as more rapid upward titration of pramipexole dosage. [2] The drug was originated by Chase Therapeutics and is being developed by Alto Neuroscience. [1] [2] As of March 2026, it is in phase 2 clinical trials for MDD. [1]

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References

  1. 1 2 3 "Ondansetron/Pramipexole". AdisInsight. 26 March 2026. Retrieved 6 April 2026.
  2. 1 2 3 "Alto Neuroscience receives US patent for ALTO-207; strengthens IP portfolio for patients with treatment-resistant depression". www.pharmabiz.com. 17 January 2026. Retrieved 6 April 2026.
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