Journal
RHEUMATOLOGY
Volume 52, Issue 1, Pages 143-154Publisher
OXFORD UNIV PRESS
DOI: 10.1093/rheumatology/kes303
Keywords
scleroderma; systemic sclerosis; cancer; risk; systematic review; meta-analysis
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Funding
- Fondazione di Medicina Molecolare e Terapia Cellulare (Universita Politecnica delle Marche, Ancona)
- Societa Italiana di Reumatologia
- Ministero Italiano per l'Universita e la Ricerca Scientifica
- Associazione Italiana Ricerca sul Cancro (AIRC) [10068, IG11364]
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Objectives. A higher incidence of cancer in scleroderma patients compared with the general population has been suggested by several observational studies, reporting, however, different estimates. Therefore, we aimed to perform a systematic review and meta-analysis to definitely assess this association. Methods. We searched MEDLINE and Embase for all original articles of observational studies on cancer incidence in scleroderma patients without language restriction published up to December 2011. Two independent authors reviewed all titles/abstracts and retrieved detailed full-text of potentially relevant articles to identify studies according to predefined selection criteria. Summary estimates were derived using random-effects model and reported as relative risk (RR). Publication bias was evaluated by trim and fill analysis. Results. From articles initially identified, 16 original studies, involving more than 7000 patients, were included in the present review. Compared with the general population, the summary RR to develop all invasive cancers in scleroderma patients was 1.75 (95% CI 1.41, 2.18). The results for selected cancer sites indicated a strong association with lung cancer (RR 4.35; 95% CI 2.08, 9.09), and a significant increased risk also for haematological neoplasms (RR 2.24; 95% CI 1.53, 3.29). The relation with breast cancer, suggested in some previous epidemiological studies, was not confirmed (RR 1.05; 95% CI 0.86, 1.29). Conclusion. The present meta-analysis, the first on scleroderma and cancer risk, provides definite estimates on the association between scleroderma and cancer.
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