To date, studies focusing on genes associated with sarcopenia itself are rare; only the influences of the genetic variants of Alpha-actinin-3 (Cho et al., 2017), Caveolin-1 (Lin et al., 2014) and vitamin D receptor (Roth et al., 2004) were investigated in connection with sarcopenia so far. The gene discussed is ACTN3; the disease is sarcopenia.