Haploinsufficiency of ATP1A2 encoding the Na+/K+ pump α2 subunit associated with familial hemiplegic migraine type 2

Migraine is a common and disabling disorder affecting 12% of the population. Many people with migraine, about 20%, experience aura before or during headaches. Genetic factors play a significant role, especially in migraine with aura. Familial hemiplegic migraine is a hereditary form marked by aura and hemiparesis. This study identifies mutations in the ATP1A2 gene. ATP1A2 encodes the alpha2 subunit of the Na+/K+ pump. These mutations are linked to familial hemiplegic migraine type 2, or FHM2. This condition is associated with chromosome 1q23. Functional data suggest a loss of function triggers the disorder. This research is groundbreaking, as it connects Na+/K+ pump subunit mutations to genetic diseases. Understanding these mutations enhances our knowledge of migraine mechanisms. This could potentially lead to new treatment options for affected individuals. Further research is needed to explore the implications of these findings. Clinical relevance: This study highlights genetic factors in familial hemiplegic migraine, which may inform future treatments.