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Reduction in cyclophosphamide cumulative dose and introduction of newer immunosuppressive drugs may reduce the malignant burden of systemic necrotising vasculitis (SNV).1 2 This study aimed to describe malignancies recorded in five randomised controlled trials in SNV conducted by the French Vasculitis Study Group and to identify predictive factors.
CHUSPAN, CHUSPAN 2, WEGENT, CORTAGE and MAINRITSAN trials evaluated different therapeutic strategies, summarised in online supplementary table S1, for the treatment of newly diagnosed or relapsing SNV. Informations regarding methods and references are provided in the online supplementary materials. The primary endpoint was the occurrence of malignancy.
A total of 733 patients included between 1993 and 2012 were pooled. Baseline characteristics of the population are summarised in table 1. During a 4485.9 person-years (PY) observation period, 39 (5.3%) patients developed malignancies (869.5 per 100 000 PY), including solid cancers in 34 (4.6%) cases (757.9 per 100000 PY) and …
Handling editor Josef S Smolen
Contributors LA and BT devised the project, the main conceptual ideas and proof outline, pooled and analysed data from the five randomised controlled trials (RCTs). AJ performed the statistical analysis. CP, XP, PC, CR, LG and BT designed and published the five RCTs involved in this article. LA and BT, wrote the manuscript. All authors discussed the results and contributed to the final manuscript.
Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.
Competing interests None declared.
Patient consent for publication Not required.
Provenance and peer review Not commissioned; externally peer reviewed.