About Cohen Syndrome and COH1/VPS13B
Cohen Syndrome is an ultra rare genetic disease (approximately 1,000 people diagnosed worldwide). It is caused by mutations in chromosome 8 at gene COH1, or VPS13B.
PEOPLE WITH COHEN SYNDROME ROCK!
They generally love to smile, laugh, and be social. It is hard not to fall in love with these sweet individuals!
However they face many challenges due to the broad spectrum of symptoms of Cohen Syndrome, including:
failure to thrive, developmental delays, intellectual disability, small head size (microcephaly), weak muscle tone (hypotonia), and overly flexible joints, which often result in orthopedic issues. Many have behavior that falls within the autism spectrum. Speech delays are common with many affected individuals being nonverbal. Independence is impacted as well - individuals typically require lifelong caregiver support.
This condition includes progressive myopia (nearsightedness) and severe retinal degeneration (dystrophy) beginning at an early age. This leads to peripheral vision loss, night blindness and typically legal blindness by adulthood. This is one of several issues limiting the potential for future independence, and impacts more than 90% of individuals.
Many people who have Cohen Syndrome also suffer from moderate to severe autoimmune neutropenia, an abnormally low number of white blood cells to fight against bacterial infections. Having this condition makes them extremely susceptible to life threatening infections and requires that fevers be managed as medical emergencies.