Katsushika City

This research aims to evaluate the antiviral effects of S-337395 compared with placebo in nonhospitalized adult participants who have symptomatic respiratory syncytial virus (RSV) infection and are at high risk of progressing to severe disease. The study focuses on adults with recent onset of RSV symptoms and important risk factors such as advanced age or chronic lung or cardiovascular disease. It is designed as a Phase 2b, randomized, double-blind, placebo-controlled trial to assess safety, tolerability, and efficacy. Participants will receive either S-337395 or a matching placebo according to a specified dosing schedule. The treatment begins within 72 hours of RSV symptom onset. The study measures changes in RSV viral RNA load from baseline to Days 2, 4, and 6 using nasopharyngeal swabs and quantitative reverse transcription polymerase chain reaction (qRT-PCR) tests to monitor antiviral effects. During the study, participants will be monitored for safety and effectiveness through viral load testing at multiple time points. Medical history, physical exams, vital signs, and ECGs are conducted to ensure stability aside from RSV symptoms. The study also tracks symptoms and any adverse events to evaluate treatment tolerability. Total participation includes screening and follow-up assessments as outlined by the study protocol.

Researchers are evaluating the safety and effectiveness of brenipatide at different doses compared with a placebo in adults with uncontrolled moderate to severe asthma. This Phase 2 study focuses on participants who have a history of asthma requiring controller medication and recent severe asthma exacerbations. The goal is to better understand how brenipatide impacts asthma control over an extended period. Participants will receive either brenipatide or a placebo, both administered by subcutaneous injection. The study includes a 52-week treatment period during which the effects of the drug on asthma exacerbations and symptoms will be monitored. This randomized, double-blind approach helps compare the responses between the treatment and placebo groups. Study involvement lasts about 65 weeks, covering screening, treatment, and follow-up phases. During the study, researchers will assess participants' asthma control using questionnaires and track the annual rate of asthma exacerbations. Safety and treatment responses will be closely monitored throughout the trial to evaluate the drug's impact and participant well-being.

Researchers are evaluating the effectiveness and safety of a Double-effect kissing balloon technique (W-KBT) using Perfusion balloon (PB) and Drug coated balloon (DCB) in patients with left main coronary artery disease (LMD) who have left circumflex artery (LCx) ostium stenosis. This is a prospective, observational, multi-center study focusing on patients with stable angina, non-ST-elevation acute coronary syndrome, or unstable angina who are undergoing percutaneous coronary intervention (PCI). Patients who meet selection criteria will be enrolled and treated under usual care. The PCI procedure involves W-KBT following crossover stenting for the left main trunk to left anterior descending artery direction, proximal optimization technique (POT), and conventional kissing balloon technique (C-KBT) as the optimal treatment. Operators will obtain consent before performing PCI and will register cases continuously to assess the technique's efficacy and safety. Participants will undergo PCI with W-KBT, and data will be collected during the procedure to measure procedure success rates. Researchers will monitor major adverse cardiovascular events (MACE) within 12 months after PCI. The study will gather real-world data from multiple centers to evaluate the outcomes and safety of this treatment approach over time.

Researchers are evaluating the safety and effectiveness of two treatment approaches following Left Atrial Appendage Closure (LAAC) in people with non-valvular atrial fibrillation who have a high risk of bleeding. This Phase 4 clinical trial compares Non-Antithrombotic Therapy (NAPT), where patients receive oral anticoagulants (OAC) for 45 days followed by no further antithrombotic treatment, to Single Antiplatelet Therapy (SAPT), which involves OAC for 45 days followed by low-dose aspirin. The main goal is to determine if NAPT is not worse than SAPT in preventing serious events like death, heart attack, stroke, systemic embolism, or major bleeding over a maximum of four years. Participants will be randomly assigned to either the NAPT or SAPT group after LAAC. Both groups start OAC treatment within 24 hours of enrollment and continue for 45 days. After this period, the SAPT group will take low-dose aspirin for the remainder of the study, while the NAPT group will stop all antithrombotic medications. The study includes visits at 45 days, 1 year, and 2 years post-enrollment, with additional follow-up by phone up to four years. During the study, participants will be monitored for health events such as mortality, heart attacks, strokes, and bleeding complications. Assessments include hospital visits and telephone check-ins to track outcomes and safety throughout the observation period. The total follow-up time for each participant can be up to four years, ensuring close monitoring over the long term.

Researchers are evaluating the overall survival of women with stage I epithelial ovarian cancer following comprehensive staging surgery. This phase III trial compares the effects of adjuvant chemotherapy versus observation without chemotherapy in this patient group. Patients are randomly assigned based on histologic type, enrollment facility, and clinical staging according to the FIGO system. Participants are divided into two groups. Group A receives adjuvant chemotherapy, which includes either Paclitaxel plus Carboplatin or Docetaxel plus Carboplatin, administered every three weeks for three to six cycles. Switching between paclitaxel and docetaxel is allowed if adverse events occur. Group B undergoes observation only, with no chemotherapy given. The study treatment starts within eight weeks after comprehensive staging surgery. During the study, participants undergo regular assessments to monitor survival status up to 60 months from randomization. Researchers collect data including clinical evaluations, imaging, and laboratory tests as needed. Safety is closely monitored, and participants provide informed consent before enrollment. The trial aims to determine whether adjuvant chemotherapy improves survival compared to observation alone in this patient population.