Phelan-McDermid Syndrome Study

Thanks to all families who participated in the study. Your time, energy & commitment are greatly appreciated by the team at Neuren.


The purpose of the study was to look at the safety, tolerability, and efficacy of NNZ-2591 in the treatment of children with Phelan-McDermid syndrome…

Info For Caregivers

You will be responsible for ensuring that the participant attends the study visits to meet with your study doctor and other study staff…

Does someone you know have Phelan-McDermid syndrome?

Phelan-McDermid syndrome is a genetically determined neurological disorder, characterized by intellectual disability, absence of speech or severe speech impediments, low muscle tone, developmental delays (including motor delays), symptoms of Autism Spectrum Disorder (ASD). This is a spectrum disorder which means not all people display the same behaviors and symptoms. People with Phelan-McDermid syndrome need continuous care and are unable to live independently.

There is currently no treatment for Phelan-McDermid syndrome.

Contact Us To Learn More

PMS Study Recruitment is now Closed.
Thank you to all the families who participated!