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Found 4 Actively Recruiting clinical trials
Actively Recruiting
Researchers are evaluating the clinical efficacy, safety, and tolerability of XEN1101 as an additional treatment for people with focal-onset seizures in a Phase 3 randomized, double-blind, placebo-controlled study. This trial aims to compare two doses of XEN1101 with a placebo to see how well the medication can reduce seizure frequency in patients who continue their current antiseizure medications. The study involves adults diagnosed with focal epilepsy who have tried at least two antiseizure medicines without achieving seizure freedom. About 360 participants will be randomly assigned to receive either 25 mg or 15 mg of XEN1101 or a placebo once daily with an evening meal. The study includes up to 9.5 weeks of baseline monitoring to track seizure frequency followed by 12 weeks of blinded treatment. Participants maintaining the study drug can then join an open-label extension to continue treatment or enter an 8-week follow-up after treatment ends. Throughout the study, participants will keep accurate seizure diaries and continue their stable antiseizure medications. Researchers will measure the median percentage change in seizure frequency from baseline through the 12-week treatment period, along with secondary outcomes like the proportion of participants with at least a 50% reduction in seizures and patient-reported improvement. Safety will be monitored from screening until 56 days after the last dose. Overall, participants are involved for the baseline, treatment, and follow-up phases lasting several months.
Actively Recruiting
Researchers are studying the use of XEN1101 as an additional treatment for people aged 12 years and older who have primary generalized tonic-clonic seizures PGTCS associated with generalized epilepsy. This Phase 3, multicenter, randomized, double-blind, placebo-controlled trial aims to assess the clinical effectiveness, safety, and tolerability of XEN1101 when added to existing anti-seizure medications. Participants are currently taking 1 to 3 anti-seizure medications and have had probable or possible PGTCS for at least one year. Participants will be randomly assigned to receive either XEN1101 or a placebo. Those aged 18 years and older will receive a 25 mg daily dose of XEN1101 or placebo. Participants aged 12 to under 18 years may receive 15 mg, 25 mg, or placebo daily. The study includes a baseline period lasting up to 9.5 weeks to track seizure frequency, followed by a 12-week double-blind treatment period where participants will take the assigned capsules once daily with an evening meal. After completing this period, participants can join an open-label extension study for continued XEN1101 treatment or enter an 8-week post-treatment follow-up if they do not enroll. During the study, participants will keep accurate seizure diaries and attend scheduled visits to monitor their health and response to treatment. Researchers will evaluate changes in monthly seizure frequency as the main outcome. Additional assessments will track safety, tolerability, and other measures throughout the treatment and follow-up periods. Overall participation may last several months, including baseline assessment, treatment, possible extension, and follow-up phases.
Actively Recruiting
Researchers are evaluating ACP-204, a drug targeting serotonin receptor subtype 2A, in adults aged 55 to 95 years with psychosis related to Alzheimers disease. This master protocol includes three independent, randomized, double-blind, placebo-controlled studies aimed at assessing the drugs efficacy and dose response. Substudy 1 is a Phase 2 trial comparing two doses of ACP-204 30 mg and 60 mg to placebo, followed by two Phase 3 confirmatory studies Substudies 2A and 2B that will independently evaluate the doses or a selected dose against placebo. Participants will undergo a screening period lasting up to 49 days before starting a six-week double-blind treatment phase where they will receive daily doses of ACP-204 or placebo, taken once a day at about the same time with or without food. After treatment, there is a 30-day safety follow-up for those not entering an open-label extension, and vital status follow-up for those who end the study early. Each substudy is analyzed separately to assess the drugs impact. During the trial, participants are closely monitored with assessments including the Scale for the Assessment of Positive Symptoms-Hallucinations and Delusions SAPS-HD from baseline to week 6. Other evaluations include clinical global impression scales and safety monitoring. Participants must have a study partner or caregiver to assist with visits and adherence. The study is designed to track changes in psychosis symptoms and overall safety through the treatment and follow-up periods.
Actively Recruiting
Researchers are evaluating palazestrant OP-1250 compared to standard endocrine therapies for adults with ER-positive, HER2-negative advanced or metastatic breast cancer that has progressed after endocrine therapy combined with a CDK46 inhibitor. This international phase 3 trial aims to assess the safety and effectiveness of palazestrant versus fulvestrant or aromatase inhibitors such as anastrozole, letrozole, or exemestane. Participants are randomly assigned to receive either palazestrant daily on a 28-day cycle at doses of 90 mg or 120 mg during the dose-selection phase, or the standard-of-care endocrine therapy including fulvestrant administered on specific days or one of the aromatase inhibitors given daily on similar cycles. The trial includes an initial dose-selection period with about 120 participants, followed by a larger randomized phase with approximately 390 participants receiving the selected dose of palazestrant or standard treatment. Throughout the study, participants will be monitored for adverse events, dose adjustments, and drug discontinuations up to 16 weeks. Researchers will measure progression-free survival for up to two years and overall survival for up to four years after randomization. Regular assessments will include clinical evaluations and safety monitoring to observe the effects and tolerability of the treatments during the trial.