Riverdale

Researchers are evaluating the effectiveness of remibrutinib compared to dupilumab as add-on treatments for adults with moderate to severe chronic spontaneous urticaria CSU that is not well controlled by second generation H1-antihistamines sgH1-AH. This Phase 3b, multi-center, randomized, double-blind, double-dummy study focuses on early treatment effects within 4 weeks. The study addresses the need for better management of CSU symptoms such as hives and itch. Participants will be assigned to one of two treatment groups one group will receive remibrutinib tablets twice daily plus placebo injections, while the other group will receive dupilumab injections with matching placebo tablets. Both groups continue their stable background therapy of sgH1-AH daily. The study includes a screening period up to 4 weeks, a 12-week core double-blind treatment period, and an optional 12-week open-label extension where all participants may receive remibrutinib if it is not commercially available. After treatment, safety follow-up occurs for up to 12 weeks, with phone calls and possible site visits. Participants will be monitored through regular assessments including symptom severity scores, urticaria activity scores, and daily diaries. Safety follow-up includes phone calls and visits depending on treatment continuation. The main outcome is the change in weekly urticaria activity score at Week 4. Other measures include severity of hives and itch at Weeks 1 and 4. Total study participation may last up to 24 weeks, including optional extension and follow-up phases.

Researchers are evaluating the safety and effects of a medicine called PF-07275315 for treating adults with moderate-to-severe asthma that is not well controlled. The study focuses on adults aged 18 to 70 who have had asthma for at least 12 months and have been on regular maintenance treatments. Asthma is a condition that makes breathing difficult and can reduce quality of life and daily functioning. Participants will receive either PF-07275315 or a placebo through multiple injections under the skin during clinic visits over a 12-week period. The study is randomized and blinded, meaning neither participants nor researchers know who receives the medicine or placebo. The trial includes several experimental groups receiving different doses of PF-07275315 and a group receiving placebo to compare safety and effects. The study includes a 12-week treatment phase. During about 7.5 months of involvement, participants will attend nine clinic visits. Researchers will monitor lung function using tests like forced expiratory volume in 1 second FEV1, record any side effects or adverse events, and assess asthma control and quality of life through questionnaires. Safety will be followed for 24 weeks, including lab tests, vital signs, and heart monitoring. This helps understand how PF-07275315 affects lung function and overall health in asthma patients.