Treatment of Exertional Myopathie (PSSM2)
It is only possible to treat symptoms:
Stabling, with as much controlled movement as the horse’s condition will allow; avoidance of transport
Genetic defects cannot be cured, but in complex, multifactorial diseases such as Exertional Myopathy/Muscle Integrity Myopathy, it is possible to adjust the environmental conditions (feeding, training/exercise, handling) so that these can help mitigate the influence of the defective proteins.
You can find more detailed information in the Prevention section.