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1.
Korean Journal of Dermatology ; : 440-446, 2021.
Artículo en Inglés | WPRIM | ID: wpr-901965

RESUMEN

Background@#Patients with stable psoriasis showing clearear-clear response can consider extending the dosing interval of biologics. However, few studies have reported the treatment outcomes following irregular dosing intervals of biologics in patients with psoriasis. @*Objective@#We compared treatment outcomes after regular and irregular dosing intervals of biologics in patients with psoriasis. @*Methods@#This single-center, retrospective observational study included patients who received biologics for treatment of plaque psoriasis between January 1, 2014 and December 31, 2019. We compared patient demographics, clinical characteristics, biologics administered, and treatment outcomes based on the regularity of the dosing interval. @*Results@#Among 95 patients investigated, 63 (66.3%) received biologics at regular dosing intervals. We observed no significant intergroup differences in the final Psoriasis Area Severity Index (PASI) scores (1.2 vs. 1.8, p=0.16) and in the percentage improvement in PASI scores from baseline levels (−89.8% vs. −90.8%, p=0.68). The rate at which biologics were switched was higher in the irregular-dosing group than in the regular-dosing group; however, the difference was statistically nonsignificant (28.1% vs. 12.7%, p=0.06). We observed a significant intergroup difference in patients who were administered guselkumab at baseline (12 [21.8%] vs. 0 [0.0%], p=0.01). @*Conclusion@#This study showed that compared with regular dosing intervals, irregular dosing intervals of biologics were associated with high rates of switching of these agents, although we observed no statistically significant differences with regard to PASI scores. Therefore, it is important to adhere to the standard dosing schedule prescribed for biologics, and guselkumab may improve patient compliance.

2.
Korean Journal of Dermatology ; : 440-446, 2021.
Artículo en Inglés | WPRIM | ID: wpr-894261

RESUMEN

Background@#Patients with stable psoriasis showing clearear-clear response can consider extending the dosing interval of biologics. However, few studies have reported the treatment outcomes following irregular dosing intervals of biologics in patients with psoriasis. @*Objective@#We compared treatment outcomes after regular and irregular dosing intervals of biologics in patients with psoriasis. @*Methods@#This single-center, retrospective observational study included patients who received biologics for treatment of plaque psoriasis between January 1, 2014 and December 31, 2019. We compared patient demographics, clinical characteristics, biologics administered, and treatment outcomes based on the regularity of the dosing interval. @*Results@#Among 95 patients investigated, 63 (66.3%) received biologics at regular dosing intervals. We observed no significant intergroup differences in the final Psoriasis Area Severity Index (PASI) scores (1.2 vs. 1.8, p=0.16) and in the percentage improvement in PASI scores from baseline levels (−89.8% vs. −90.8%, p=0.68). The rate at which biologics were switched was higher in the irregular-dosing group than in the regular-dosing group; however, the difference was statistically nonsignificant (28.1% vs. 12.7%, p=0.06). We observed a significant intergroup difference in patients who were administered guselkumab at baseline (12 [21.8%] vs. 0 [0.0%], p=0.01). @*Conclusion@#This study showed that compared with regular dosing intervals, irregular dosing intervals of biologics were associated with high rates of switching of these agents, although we observed no statistically significant differences with regard to PASI scores. Therefore, it is important to adhere to the standard dosing schedule prescribed for biologics, and guselkumab may improve patient compliance.

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