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Discover 13,761 clinical trials near Colorado. Find research studies in your area.
Showing 8361-8380 of 13,761 trials
NCT00904579
Background: * Solid organ transplantation provides life-saving treatment for end-stage organ disease but is associated with an increased cancer risk because of the need for long-term immunosuppression * End-stage renal disease (ESRD), the most common type of end-stage organ disease leading to transplant, is itself linked to increased risk for some cancers * The role of immunosuppression and other factors causing cancer in this setting are not fully understood. Objectives: * To characterize cancer risk in transplant recipients and identify risk factors. * To characterize risk for transmission of cancer from organ donors to recipients. * To describe cancer risk in ESRD. Eligibility: Patients are not required for this study. Data are gathered from existing databases of ESRD patients, organ transplant patients and cancer registries. Design: * Databases of 1) U.S. transplant recipients, donors and wait list candidates and 2) U.S. ESRD patients will be linked to multiple U.S. cancer registries to identify cancers in transplant recipients and ESRD patients. * The spectrum of cancer risk in transplant recipients and ESRD patients will be evaluated in detail. * The cancer risk in transplant recipients will be examined in relation to whether the donors had cancer. * The proposed cancer risk factors (e.g., underlying medical condition, infection with cancer-causing viruses, immunosuppressive medications) documented in transplant and ESRD files will be studied for association with increased risk of particular types of cancer.
NCT03251092
Part 1 of this trial will enroll healthy volunteers into a single ascending dose (SAD), multiple ascending dose (MAD), and Food Effect (FE) treatment groups. The SAD treatment group is comprised of at least 3 ascending dose level cohorts where healthy adult subjects will be randomized to receive a single dose of either PTI-808 or placebo and will be followed for 7 days post dose. A safety review committee (SRC) will convene after the completion of each cohort to evaluate safety and pharmacokinetic (PK) data. Following the conclusion of the respective SAD level dose groups and after sufficient review of study data and approval by the SRC, a second set of healthy adult subjects will participate in an assigned MAD treatment group. The MAD treatment group is comprised of 3 ascending dose level cohorts where subjects will be randomized to receive either PTI-808 or placebo daily for 7 days and will be followed for 7 days after receiving the last dose. Also following the conclusion of the respective SAD level dose groups, healthy adult subjects will participate in the FE treatment group. Part 2 of this will enroll healthy volunteers to assess the safety, tolerability, and PK of PTI 808 co administered with PTI 801 and PTI 428 to HVs with daily dosing for 7 consecutive days. Part 3 will enroll adult subjects with cystic fibrosis (CF) into a MAD treatment group consisting of 2 cohorts. Subjects will receive PTI-808 co-administered with PTI-801 and PTI-428. PTI-808 will be administered daily for 7 consecutive days followed by PTI-808 + PTI-801 + PTI-428 administered daily for 14 consecutive days. Part 4 will enroll adult subjects with cystic fibrosis (CF) into 28-day cohorts. Subjects will receive PTI-808 co-administered with PTI-801 with or without PTI-428 versus matching placebo.