Suboptimal Clinical and Quality of Life Outcomes in Patients with Psoriasis Undertreated with Oral Therapies: International Physician and Patient Survey.

Introduction: Psoriasis is a chronic, inflammatory, immune-mediated disease. This study assessed the time at which patients switched from a conventional oral systemic treatment to a biologic therapy; patient clinical and quality of life (QoL) outcomes associated with oral systemic treatments; and the proportion of patients who persisted on oral therapy (nonswitchers), despite reported suboptimal clinical and QoL outcomes. Methods: This data analysis used the Adelphi Real World Psoriasis Disease Specific Programme, a non-interventional, retrospective, cross-sectional survey conducted in the USA, France, Germany, and United Kingdom (August 2018–April 2019). Kaplan–Meier (KM) analysis assessed switching from oral to biologic therapy in patients treated ≥ 3 years at survey completion (n = 597). The severity of psoriasis was reported by physicians as the percentage of body surface area (BSA) affected by psoriasis. Dermatology Life Quality Index (DLQI) scores were calculated for three groups: nonswitchers who met treatment failure criteria, nonswitchers who did not meet failure criteria, and switchers to a biologic therapy. Results: In KM analysis, approximately 50% of the patient population switched by 24 months. A substantial portion of nonswitchers continued to have moderate-to-severe psoriasis. Among nonswitchers, 57–77% had BSA ≥ 3% and 16–24% had BSA ≥ 10% at the time of the survey compared with 37% of switchers who had BSA of ≥ 3% and 9% who had BSA of ≥ 10%. QoL was poor among nonswitchers. The mean [standard deviation (SD)] DLQI scores for nonswitchers meeting treatment failure criteria, nonswitchers not meeting failure criteria, and switchers were 6.11 (4.55), 2.62 (3.29), and 2.25 (4.23), respectively. Conclusion: There is a clear unmet need for more effective oral therapies, and further research into the reasons for patients remaining undertreated, which may include patient preference for oral treatments (despite lack of response), contraindications, or insurance/formulary-related barriers to access, are needed. Plain Language Summary: Psoriasis is a common skin disease that causes itchy, painful, scaly sores. Patients may feel stigmatized, which can impact their quality of life and productivity. About 1 in 5 patients have severe psoriasis, which is harder to treat and may require pills or shots. Both shots and pills are effective at treating psoriasis; however, many patients choose to continue taking pills, even if their psoriasis worsens, for reasons including a desire to avoid needles. We described patients with moderate-to-severe psoriasis who started on pills and either remained on pills or switched to shots by the time of the survey. We looked at the reasons they gave for switching, as well as at quality of life measures reported by the patients. To do this, we analyzed data from a survey called the Adelphi Real World Psoriasis Disease Specific Programme. This survey was conducted among doctors who treat skin diseases and their patients. Participating doctors and patients from the USA, France, Germany, and the United Kingdom were asked questions about the patients' health and how psoriasis affects their lives. Survey results showed that nearly half of patients switched to shots by 24 months, and most who switched cited treatment failure as the reason. Those who continued to take their pills despite having more severe psoriasis symptoms had more itching and pain and had lower quality of life than those who switched to shots. This suggests that there is a need for more effective oral treatments for patients with psoriasis. [ABSTRACT FROM AUTHOR]