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Researchers are conducting a Phase 3, randomized, double-blind, placebo-controlled study to evaluate the safety and effectiveness of KarXT in men and women aged 55 to 90 years who have mild to severe Alzheimer's Disease with moderate to severe psychosis related to the condition. The main goal is to compare KarXT against a placebo by measuring changes in hallucinations and delusions using the Neuropsychiatric Inventory-Clinician (NPI-C) score. Participants will receive different doses of KarXT ranging from 20/2 mg to 66.7/6.67 mg daily or placebo capsules. The study is designed to compare the effects of KarXT with placebo in a parallel group format, maintaining the double-blind setup to ensure unbiased results. During the study, participants will be assessed at the start and end of treatment (up to 14 weeks) to evaluate changes in psychotic symptoms. They will undergo clinical scales such as the NPI-C and the Clinical Global Impression-Severity (CGI-S) scale. The study also requires imaging scans like MRI or CT to rule out other brain diseases. A study partner who has regular contact with the participant will be involved to support adherence and observation. Safety and efficacy will be monitored throughout the treatment period.

Researchers are evaluating the use of baloxavir marboxil in children under 12 years old with influenza. This study has two parts: Part A focuses on checking for resistance-related changes in the virus before and after treatment, while Part B looks at how influenza might spread from young children treated with baloxavir marboxil to their household contacts. Enrollment for Part B has stopped as per the latest protocol. Baloxavir marboxil is given as an oral suspension, with the dose based on the child's body weight: 80 mg for those 80 kg or more, 40 mg for 20 to less than 80 kg, and 2 mg per kg for those under 20 kg. Part A involves monitoring these children for resistance changes at baseline and during treatment on specific days. Part B included participants from Part A who lived with household contacts, assessing transmission, but no new participants are being enrolled in this part. Participants will be involved in screening to confirm influenza and absence of COVID-19, with symptom onset within 48 hours before starting treatment. Researchers will measure resistance-associated viral changes at baseline and during treatment days 4, 6, and 10. Household contacts in Part B were also assessed for influenza transmission risk and monitored through scheduled visits, but Part B enrollment is closed. The total study duration varies depending on participation in Parts A and B.

The trial investigates the long-term safety and tolerability of KarXT in people with psychosis associated with Alzheimer's Disease. This Phase 3 global, multicenter, open-label extension study lasts 52 weeks and enrolls participants who have completed earlier related studies (CN012-0026, CN012-0027, or CN012-0056). The purpose is to monitor how well patients tolerate KarXT over an extended period and to collect safety data. Participants receive KarXT in varying doses taken three times daily, ranging from 20/2 mg up to 66.7/6.67 mg per dose, corresponding to total daily doses between 60/6 mg and 200/20 mg. This treatment is provided throughout the 52-week open-label extension. The study includes only those who completed the previous related studies and continues to assess their response to KarXT over this longer timeframe. During the study, participants are closely monitored for treatment-emergent adverse events from the first dose through 14 days after the final dose, which may be up to 54 weeks. Regular assessments ensure safety and tolerability, and caregivers are involved to support participants. The study also evaluates participants' ability to continue living in their current setting and requires consent from the participant or their legal representative. Overall, the study tracks long-term safety outcomes in this specific patient group.