Data on effectiveness
Real-world data suggest that the effectiveness of dupilumab is similar to the efficacy seen in clinical trials. For example, a recently published systematic review and meta-analysis of 3,303 AD patients on dupilumab found that after 16 weeks of therapy, 60% achieved a 75% improvement in the Eczema Area and Severity (EASI75) score, and 27% achieved an EASI90. In a Dutch study of 210 adults treated with dupilumab for 52 weeks, enrolled in a Dutch registry, the mean percent reduction in EASI score was 70% at 16 weeks and 76.6% by 52 weeks.
In addition, there was at least a 4-point improvement in the Patient-Oriented Eczema Measure (POEM) score and at least a 4-point improvement in the Itch Numeric Rating Scale (NRS), said Dr. Paller, who was not involved in the study. “These patient-reported improvements were seen very early on,” she noted.
What about drug survival at 1 year? In a retrospective cohort study that drew from insurance databases, 1,963 adults given dupilumab were studied for a mean of 315 days. The rate of persistence was 92% at 6 months and 77% at 12 months. “That means that it’s still effective,” Dr. Paller said.
While that is a short period of time, she compared these results with long-term survival of nonsteroid systemic immunosuppressants such as cyclosporine, referring to a study of adults with AD treated with systemic immunosuppressants, which found “a 32% persistence rate at 12 months in drugs that require more monitoring, so more burden.”
Dr. Paller disclosed that she is a consultant to and/or an investigator for dupilumab (Dupixent) manufacturers Regeneron and Sanofi, AbbVie, Arena, Bausch, Bristol Myers Squibb, Dermavant, Eli Lilly, Incyte, Forte, LEO Pharma, LifeMax, Pfizer, and RAPT Therapeutics.