Among SSc patients without SIBO diagnosis, a positive correlation between FC level and age (rho = 0.505; p = 0.0275), CRP value (rho = 0.564; p = 0.0120), neutrophils (rho = 0.781; p = 0.0001), and leukocyte level (rho = 0.580; p = 0.0093) was observed, whereas a negative correlation was observed between this marker and alanine transaminase (rho = −0.567; p = 0.0114). The gene discussed is GPT; the disease is systemic sclerosis.