Mamak

Primary immune thrombocytopenia (ITP) is a condition in which the immune system mistakenly destroys platelets, the cells that help stop bleeding. This leads to a low platelet count, making it easier to bruise or bleed. The trial investigates the long-term safety, tolerability, and effectiveness of mezagitamab in adults with chronic primary ITP who have previously participated in certain mezagitamab studies. It also examines how the body processes mezagitamab over time. Participants who completed the previous mezagitamab studies TAK-079-3002 or TAK-079-1004 and meet specific criteria will receive mezagitamab as a subcutaneous injection during this continuation study. The study is open-label and multicenter, focusing on continued treatment based on protocol requirements. The medication is given under medical supervision, and participants return to the study clinic several times throughout the study. During their participation, individuals will undergo regular assessments including monitoring for treatment-emergent adverse events and serious adverse events up to approximately 108 weeks. Researchers will track safety by noting any adverse events that lead to permanent withdrawal from mezagitamab. The study includes physical evaluations, laboratory tests, and ongoing safety monitoring to understand how well participants tolerate the treatment and how effective it is over the long term.

Primary immune thrombocytopenia (ITP) is a condition where the immune system mistakenly destroys platelets, cells that help stop bleeding, leading to a low platelet count and increased risk of bruising or bleeding. This study is evaluating whether mezagitamab, given under the skin, can effectively maintain stable platelet counts in adults with chronic primary ITP compared to a placebo. The study is a Phase 3, randomized, double-blind trial designed to assess the efficacy and safety of mezagitamab in this patient population. Participants will receive mezagitamab injections or placebo injections administered subcutaneously for up to 6 months. Those who complete this study or do not respond to treatment by week 16 may have the option to join a continuation study to receive open-label mezagitamab if eligible. The study includes careful monitoring during treatment, with multiple visits to the study clinic throughout the treatment period. During the study, participants will undergo various assessments to monitor their platelet counts and overall health. Researchers will measure the percentage of participants who achieve a durable platelet response up to week 24. Safety and response to treatment will be regularly evaluated through clinical visits and laboratory tests. The total participation duration includes the initial treatment phase and potential extension in the continuation study for those who qualify.

Researchers are studying an experimental drug called odronextamab in combination with lenalidomide for adults with relapsed or refractory follicular lymphoma (FL) or marginal zone lymphoma (MZL), which are subtypes of Non-Hodgkin's lymphoma. This Phase 3 study has two parts: Part 1 focuses on the safety and tolerability of this drug combination and determining the appropriate odronextamab dose, while Part 2 compares the effectiveness of this combination to the current standard treatment of rituximab plus lenalidomide. The study also explores side effects, drug levels in the blood, antibody development against the study drug, and impacts on quality of life and daily activities. Participants receive either odronextamab plus lenalidomide or rituximab plus lenalidomide according to the study protocol. Part 1 is not randomized, focusing on safety and dose finding, while Part 2 is randomized and controlled to assess efficacy and safety. Treatments are administered per protocol guidelines during these study phases. During the study, participants undergo regular evaluations including imaging scans to measure disease, blood tests, and monitoring for side effects up to two years. The main outcomes measured include dose-limiting toxicities within 35 days, treatment-emergent adverse events over two years, and progression-free survival over five years. Participants are also monitored for quality of life and ability to perform daily activities throughout the trial duration.

Researchers are evaluating an experimental drug called odronextamab for adults with previously untreated follicular lymphoma, a type of non-Hodgkin lymphoma. This Phase 3 study aims to assess the safety, tolerability, and effectiveness of odronextamab alone and compared to the current standard treatments, including rituximab combined with different types of chemotherapy. The study also examines side effects, drug levels in the blood, antibody responses against odronextamab, and the impact on quality of life and daily activities. The study consists of two parts: Part 1 is non-randomized and focuses on the safety and tolerability of odronextamab given alone. Part 2 is randomized and controlled, comparing odronextamab to rituximab combined with chemotherapy regimens such as CHOP, CVP, or Bendamustine-containing therapies. All treatments are administered according to the study protocol. Participants receive these treatments to evaluate how well odronextamab works versus standard care. Participants will undergo various assessments including imaging scans like CT or MRI to measure disease, blood tests to monitor bone marrow and liver function, and evaluations of side effects up to two years. Researchers will track dose-limiting toxicities within 35 days and assess complete response rates over 30 months. Safety and side effects will be monitored continuously, and quality of life will also be evaluated. The total length of participation depends on treatment and follow-up schedules defined in the protocol.

Researchers are evaluating the immune response and safety of giving the second dose of varicella (chickenpox) vaccine using a different brand in healthy children aged 15 months to 12 years. This Phase 3 open-label study includes 300 participants who previously received their first varicella vaccine dose at 12 months old. The study aims to understand if the second dose from Sinovac is immunogenic and safe when used interchangeably after the first dose from other brands. Participants will be grouped based on which brand of varicella vaccine they received for their first dose. All participants will then receive one dose (0.5 mL) of the Sinovac live attenuated varicella vaccine called PROVARIX as their second dose. The vaccine will be administered once during the study, and blood samples will be collected before vaccination and 42 days after vaccination to measure antibody levels. Participants will be involved for up to 42 days from enrollment to their last visit. During this time, blood samples will be taken to assess the immune response to the vaccine. Researchers will measure the geometric mean concentration and fold rise of varicella-zoster virus antibodies 42 days after vaccination. Safety will be monitored throughout the study period, and the study concludes after the last participant completes their final visit.