CD40LG and systemic sclerosis: No association between anti-CarP IgG levels and mRSS in the SSc patients was found (r = -0.130, p = 0.565), nor for anti-CarP IgM levels (r = -0.294, p = 0.183) or for anti-CarP IgA levels (r = -0.003, p = 0.990).