En atypisk, mere langsomt progredierende form af Pompes sygdom med debut i spædbørnsalderen er beskrevet og kendetegnes ved mindre svær kardiomyopati og dermed længerevarende overlevelse.
A non-typical, more slowly progressive form of infantile-onset Pompe disease has been described which is characterised by a less severe cardiomyopathy and consequently a more prolonged survival.