Calcinosis is associated with digital ulcers and osteoporosis in patients with Systemic Sclerosis: A Scleroderma Clinical Trials Consortium Study

Antonia Valenzuela, Murray Baron, Canadian Scleroderma Research Group, Ariane L. Herrick, Susanna M Proudman, Wendy Stevens, Australian Scleroderma Interest Group, Tatiana S. Rodriguez-Reyna, Alessandra Vacca, Thomas S. Medsger Jr., Monique Hinchcliff, Vivien Hsu, Joy Y. Wu, David Fiorentino, Lorinda Chung

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Abstract

Objectives We sought to identify the clinical factors associated with calcinosis in an international multicenter collaborative effort with the Scleroderma Clinical Trials Consortium (SCTC). Methods This is a retrospective cohort study of 5218 patients with systemic sclerosis (SSc). Logistic regression was used to obtain odds ratios (OR) relating calcinosis to various clinical features in multivariate analyses. Results A total of 1290 patients (24.7%) had calcinosis. In univariate analyses, patients with calcinosis were older than patients without calcinosis, more likely to be female, and had longer disease duration from the first non-Raynaud phenomenon symptom. Patients with calcinosis were more likely to have digital ulcers, telangiectasias, acro-osteolysis, cardiac disease, pulmonary hypertension, gastrointestinal involvement, arthritis, and osteoporosis, but less likely to have muscle disease. Anti-Scl-70, RNA-polymerase-III, and U1-RNP autoantibodies were significantly less common in patients with calcinosis, while anticentromere (ACA), anti-PM/Scl, and anticardiolipin antibodies were more frequent. In multivariate analysis, the strongest associations with calcinosis were digital ulcers (OR = 3.9; 95% CI: 2.7–5.5; p < 0.0001) and osteoporosis (OR = 4.2; 95% CI: 2.3–7.9; p < 0.0001). Conclusion One quarter of patients with SSc have calcinosis at some time during their illness. Our data confirm a strong association of calcinosis with digital ulcers, and support a novel association with osteoporosis.
Original languageEnglish
Pages (from-to)344-349
Number of pages5
JournalSeminars in arthritis and rheumatism
Volume46
Issue number3
Early online date2 Jun 2016
DOIs
Publication statusPublished - Dec 2016

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