International Phelan-McDermid Syndrome Awareness Day

International Phelan-McDermid Syndrome Awareness Day is observed annually on October 22nd.

Established in 2018 by the Phelan-McDermid Syndrome Foundation (PMSF).

The day aims to raise awareness about this rare genetic disorder, caused by a deletion on chromosome 22q13, and to highlight the importance of early detection.

Observances include wearing green to show support, illuminating landmarks in green light, and sharing information and personal stories to support affected families and promote research.
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