An E321G MYH1 mutation is strongly associated with nonexertional rhabdomyolysis in Quarter Horses.
Stephanie J ValbergMarisa L HenrySudeep PerumbakkamKeri L GardnerCarrie J FinnoPublished in: Journal of veterinary internal medicine (2018)
Although not associated with ER, the MYH1 mutation is associated with atrophy after ER. The MYH1 mutation is highly associated with nonER regardless of whether muscle atrophy or lymphocytic infiltrates are present. Genetic testing will enhance the ability to diagnose MYH1 myopathies (MYHM) in QH.