👉 Mackinnon's disease is a rare genetic disorder that affects the nervous system, causing seizures, loss of vision, and difficulty breathing. It is caused by mutations in the MCK1 gene, which codes for the protein CKI3, and can be inherited in families where both parents have the condition or are carriers of the mutation. The exact cause of Mackinnon's disease is not yet fully understood but has been suggested to involve abnormal immune responses that trigger seizures.