The percentage of inhibition of CD66b markers from high and low fMet levels SSc plasma by FcyR blocking antibody were 65.2% and 63.3% respectively, and for CD11b markers from high and low fMet levels SSc plasma by FcyR blocking antibody were 18.4% and 33.5% respectively. This evidence concerns the gene CEACAM8 and systemic sclerosis.