LAUSR

There exists an unmet need to treat hidradenitis suppurativa (HS) despite several approved therapeutic agents for its treatment. We sought to investigate the role of certolizumab pegol in severe, recalcitrant HS patients unresponsive to adalimumab. This retrospective cohort includes HS patients over 18 years of age who had a history of unresponsiveness to adalimumab and whose treatments were switched to certolizumab pegol with dosing similar to psoriasis (400 mg every 2 weeks). For subjects who achieved a hidradenitis suppurativa clinical response (HiSCR) following 12 and 24 weeks of treatment, dermatological life quality index (DLQI), abscess, inflammatory nodule count (AN count), and International Hidradenitis Suppurativa Severity Score System (IHS4) were evaluated as outcome measures. Eleven severe, recalcitrant HS patients with Hurley stage III HS were enrolled for this study. All patients were male and had a history of prior adalimumab exposure. Only three (27.2%) patients also had a history of using biologic agents other than adalimumab for HS. Six of 11 patients (54.5%) achieved HiSCR at week 12. However, two among these six responders lost response at week 24 despite continued therapy (HiSCR at week 24: 33.3%). The decrease in DLQI (p: 0.017 and 0.021) and IHS4 (p: 0.008 and 0.007) scores of the patients at weeks 12 and 24 showed a significant difference compared to the baseline. Certolizumab pegol is a promising treatment option for severe, recalcitrant HS patients who are unresponsive to adalimumab.