C) Also, the Caucasian origin HLA-C*12:03-B*18:01 block was more common in SSc patients (1.9%) than in controls (0.4%, pC = 0.03, OR = 5.27, 95%CI = 1.08–25.27), particularly in dcSSc (4.7%, dcSSc vs Ctls pC = 0.001, OR = 11.46, 95%CI = 2.28–57) patients. Here, HLA-C is linked to systemic sclerosis.