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Updated: Aug 26, 2025

Author Spotlight: Oral Candida Diagnosis to Advance Clinical Treatment Regimen for pSS Patients
Published on: March 1, 2024
Risk of Candida Infection and Serious Infections in Patients with Moderate-to-Severe Psoriasis Receiving Biologics: A
Yue Feng1, Baosen Zhou2, Zhen Wang1
1Department of Dermatology, Shenyang Seventh People's Hospital, Shenyang 110001, Liaoning, China.
Background:
Biological agents used to treat moderate-to-severe plaque psoriasis have been associated with Candida infection and other serious infections. It is, however, necessary to verify whether biologic agents increase the risk of Candida infection and serious infections and whether these risks vary among biologics.
Methods:
PubMed, EMBASE, and Cochrane Library were searched for eligible randomized controlled trials (RCTs) from their inception to December 2021. Results from individual RCT were pooled using Peto's method with a fixed-effects model, and I 2 was calculated to assess the heterogeneity. A Cochrane collaboration tool was used to examine bias risk, and Grades of Recommendation, Assessment, Development, and Evaluation (GRADE) were used to assess the quality of evidence.
Results:
This study included 48 published articles with data from 52 RCTs involving 27297 participants. The anti-interleukin (IL)-17 agents (95% confidence interval (CI) = 1.54-3.45, P < 0.0001) and anti-IL-12/23 agents (95% CI = 1.69-3.83, P < 0.0001) were associated with an increased risk of Candida infection compared with placebos, but there was no difference in Candida infection risk between anti-IL-17 agents and tumor necrosis factor inhibitors (TNFi) (95% CI = 0.92-3.07, P=0.09). There was no evidence that the biological agents increased the risk of serious infections in adult psoriasis (95% CI = 0.93-2.06, P=0.11) or that the biologics differed in the risk of serious infections.
Conclusions:
Our results indicated that anti-IL-17 agents, especially secukinumab, were associated with the increased risk of Candida infection. The clinically used biological agents did not increase the risk of serious infections.
Insights
Biological agents for psoriasis, particularly anti-interleukin-17 (IL-17) therapies, increase the risk of Candida infections. However, these biologic agents do not elevate the risk of serious infections in patients with moderate-to-severe plaque psoriasis.
Area of Science:
- Immunology
- Dermatology
- Infectious Diseases
Background:
- Biologic agents are used to treat moderate-to-severe plaque psoriasis.
- Previous observations suggest an association between these agents and infections, including Candida species.
- The specific risks of Candida and serious infections among different biologics require verification.
Purpose of the Study:
- To evaluate whether biologic agents increase the risk of Candida infections and serious infections in patients with moderate-to-severe plaque psoriasis.
- To compare the risks of these infections among different classes of biologic agents.
Main Methods:
- A systematic literature search of PubMed, EMBASE, and Cochrane Library was conducted for randomized controlled trials (RCTs) up to December 2021.
- Peto's method with a fixed-effects model was used to pool results from individual RCTs.
- Heterogeneity was assessed using I-squared, bias risk was examined using a Cochrane collaboration tool, and evidence quality was evaluated using GRADE criteria.
Main Results:
- Data from 52 RCTs involving 27,297 participants were analyzed.
- Anti-interleukin (IL)-17 agents and anti-IL-12/23 agents were associated with an increased risk of Candida infection compared to placebo.
- No significant difference in Candida infection risk was found between anti-IL-17 agents and tumor necrosis factor inhibitors (TNFi).
- No evidence indicated an increased risk of serious infections with biologic agents in adult psoriasis patients, nor significant differences in serious infection risk among biologics.
Conclusions:
- Anti-IL-17 agents, notably secukinumab, are linked to a higher risk of Candida infection.
- Clinically utilized biologic agents did not demonstrate an increased risk of serious infections in the studied population.
- Further research may be warranted to refine risk stratification for specific biologic therapies.
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