In the dominant genetic model (II × IT/TT), the IT/TT genotype of the I128T SNP in the MTTP gene combined with HCV genotype 3 infection presented an 8.51-fold higher risk of hepatic steatosis than that observed in carriers of the II genotype without HCV genotype 3 infections (95% CI 1.59‒45.54, p = 0.012). The gene discussed is MTTP; the disease is fatty liver disease.