The respective percentages of patients with elevated CRP (> 5 mg/L) were as follows: S 0%, E 0%, A 20%, SE 7%, SA 33%, EA 27%, and SEA 33%, indicating that only a subset of patients with arthritis, but not patients with skin or entheseal disease show elevated CRP (Fig. 2). The gene discussed is CRP; the disease is arthritic joint disease.