Maryville

Researchers are studying an investigational vaccine designed to protect healthy adults against Escherichia coli E coli. This Phase 1 clinical trial aims primarily to assess the safety and tolerability of several candidate E coli vaccines administered intramuscularly. The study involves healthy adults aged 18 to 64 years without serious medical conditions. Participants will be randomly assigned to receive one of several experimental E coli vaccine doses or a placebo. Each participant receives injections on day 1 and day 180, following a 0 and 6-month schedule. The study is double-blinded, meaning neither the participants nor the investigators know who receives the vaccine or placebo during the trial. During the study, participants will be monitored closely for local and systemic reactions within 7 days after each vaccination. Researchers will also track adverse events from the first vaccination through 12 months after the last dose. Safety assessments include medical exams and recording any serious or medically attended health issues. The total participation lasts up to 18 months with regular visits and safety follow-up.

Researchers are comparing two types of radiation therapy, proton beam radiation therapy PBT and intensity modulated photon radiotherapy IMRT, to treat patients with stage I to IVA esophageal cancer. The study aims to find out whether PBT improves overall survival and causes fewer serious heart and lung side effects compared to IMRT. Additional goals include examining symptom burden, quality of life, tumor response, cost-effectiveness, hospitalization length, lymphocyte levels, and rates of treatment failures and complications. Participants are randomly assigned to one of two groups. One group receives PBT over 28 treatment sessions, five days a week for 5.5 weeks, combined with chemotherapy chosen by the patient and their doctor. The other group receives IMRT on the same schedule with similar chemotherapy options. After chemoradiation, patients may have surgery to remove the esophagus tumor if they are eligible. Throughout the study, blood samples and imaging scans PETCT or CT are collected. Participants are closely monitored during treatment and followed for up to eight years. Follow-up visits occur every 3 to 6 months for the first three years and annually thereafter. The study measures overall survival, heart and lung side effects, symptom changes, tumor response, hospitalization time, immune cell counts, and quality-adjusted life years. The study also collects biospecimens for future research on treatment complications and assesses economic factors related to each radiation therapy.

Researchers are comparing the rates of surgical and minimally invasive interventions, as well as any harms, in Medicare beneficiaries treated with the MILD procedure versus those treated with interspinous process decompression IPD for lumbar spinal stenosis with neurogenic claudication. This observational study uses Medicare claims data to follow patients for 24 months after their initial procedure starting from January 1, 2017. The purpose is to evaluate outcomes between these two types of procedures without requiring prior patient enrollment or consent. The study includes two groups patients who received MILD, which is a percutaneous image-guided lumbar decompression performed under fluoroscopic guidance through a dorsal approach to the spine, and patients who received IPD, a different device-based decompression procedure. Data on reoperations and complications will be collected for both groups over a 24-month follow-up period using Medicare claims. Enrollment continues until the sponsor decides to stop. Participants involvement is passive as the study uses existing Medicare claims data. Researchers will monitor rates of harms related to the initial procedure and subsequent surgical or minimally invasive interventions over two years. No direct patient visits or interventions are conducted, and the study is exempt from institutional review board oversight. The total study duration extends to December 2026, covering cases treated since early 2017.