Background
There is a need to better understand the safety of TNF inhibitors in patients with psoriatic disease in whom TNF inhibitors are frequently used as monotherapy.
Objective
Examine the risks of infection and malignancy with the use of TNF antagonists in adult patients with psoriatic disease.
Methods
Systematic search for trials of TNF antagonists for adults with plaque psoriasis (PsO) and psoriatic arthritis (PsA). We included randomized, placebo-controlled trials of etanercept, infliximab, adalimumab, golimumab, and certolizumab for the treatment of PsO and PsA. 20 out of 820 identified studies with a total of 6,810 patients were included. Results were calculated using fixed effects models and reported as pooled odds ratios (OR).
Results
ORs for overall infection and serious infection over a mean of 17.8 weeks were 1.18 (95% CI: 1.05, 1.33) and 0.70 (95% CI: 0.40, 1.21), respectively. When adjusting for patient-years, the incidence rate ratio for overall infection was 1.01 (95% CI: 0.92, 1.11). The OR for malignancy was 1.48 (95% CI: 0.71, 3.09), and 1.26 (95% CI: 0.39, 4.15) when non-melanoma skin cancer was excluded.
Limitations
Short duration of follow-up and rarity of malignancies and serious infections.
Conclusions
There is a small increased risk of overall infection with the short-term use of TNF antagonists for psoriasis that may be attributable to differences in follow-up time between treatment and placebo groups. There was no evidence of an increased risk of serious infection and a statistically significant increased risk in cancer was not observed with short-term use of TNF inhibitors.