One previous study has looked at IL‐1α, IL‐1β and IL‐18 (as well as the IL‐1 family cytokine IL‐33) in a relatively modest‐sized Chinese cohort (56 patients and 56 HC) and found that only serum IL‐1β and IL‐33 were higher in SSc in multivariable analysis. Here, IL33 is linked to systemic sclerosis.