Registry of the Spanish network for systemic sclerosis: clinical pattern according to cutaneous subsets and immunological status.

Objective: To investigate the incidence of clinical and immunological characteristics of a large cohort of Spanish patients with scleroderma (SSc) and identifying factors associated with particular organ manifestations assessed by a nationwide cross-sectional analysis.

Methods: We classified SSc patients in 4 subsets using a modification of LeRoy and Medsger classification that included: "prescleroderma" (pre-SSc), limited cutaneous SSc (lcSSc), diffuse cutaneous SSc (dcSSc), and SSc sine scleroderma (ssSSc). Fourteen Spanish centers participated in patient recruitment.