PEMT and fatty liver disease: However, the distribution of PEMT polymorphism was slightly different in the study by Romeo et al., who reported that the prevalence of the GG, GA, and AA genotypes was, respectively 29.4%, 34.7%, and 35.9% in patients with fatty liver disease (n = 170) and 24.8%, 45.9%, and 29.3% in the control group (n = 2052; p = 0.019) [47].