California Paid Clinical Trials

This is a pivotal, prospective, multi-center, randomized, concurrent control, patient and assessor-blinded study with two arms: a treatment arm (where subjects will be treated with the EP Granules with Tobramycin investigational device in the 1st stage of a staged revision for periprosthetic joint infection (PJIs), and a control arm (where subjects are treated with the standard-of-care revision for infected PJIs). Read Less

Descemet Endothelial Thickness Comparison Trial (DETECT) I is a multi-center, outcome assessor-masked, placebo-controlled clinical trial randomizing 160 patients in a 2x2 factorial design. The purpose of this study is to determine differences in visual outcomes between two types of corneal transplant surgeries, ultrathin Descemet stripping automated endothelial keratoplasty (UT-DSAEK) and Descemet membrane endothelial keratoplasty (DMEK), and to determine the effect of rho-kinase inhibitors on endothelial cell loss. Read Less

Descemet Endothelial Thickness Comparison Trial (DETECT) II is a multi-center, outcome assessor-masked, placebo-controlled clinical trial randomizing 60 patients with Fuchs endothelial dystrophy to DMEK versus Descemet Stripping Only (DSO) with adjunctive Ripasudil. Read Less

This exploratory study conducted under the RDRC program studies the biodistribution of 99mTc-PSMA-I\&S in patients with prostate cancer who undergo pelvic lymph node dissection. Prostate specific membrane antigen (PSMA)-targeted radio-guided surgery uses the preoperative intravenous administration of a PSMA-ligand called PSMA-imaging and surgery (I\&S) labeled with the gamma-emitter radioisotope Technetium-99m (99mTc). Giving 99mTc-PSMA-I\&S may detect PSMA-expressing lymph nodes during surgery using a gamma probe and may help guide doctors to detect prostate cancer that has spread to the lymph nodes. Read Less

This phase II trial studies how effective talazoparib and temozolomide are for treating participants with extensive-stage small cell lung cancer that has come back after an initial chemotherapy treatment. Talazoparib, a PARP inhibitor, may stop the growth of tumor cells by preventing them from repairing their DNA. Chemotherapy, such as temozolomide, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Giving talazoparib and temozolomide may work better in treating participants with extensive-stage small cell lung cancer than either one alone. Read Less

This is a prospective cohort study designed to define the impact of HIV infection and antiretroviral therapy (ART) on young adults with perinatal HIV infection (YAPHIV) as they transition into adulthood. A group of of perinatally exposed but uninfected young adults from a similar sociodemographic background and age distribution will be enrolled for comparison. Read Less

SMARTT will estimate the incidence of conditions and diagnoses potentially related to in utero exposure to antiretroviral therapy and/or exposure in the first two months of life among children born of HIV-infected mothers. Read Less

Background and Significance: Bifidobacterium longum subspecies infantis (B. infantis) and other infant associated Bifidobacterium (such as Bifidobacterium longum subspecies longum and Bifidobacterium breve) are known to be important bacteria in the infant gut microbiome. A lack of Bifidobacterium in the infant gut may lead to disordered development of the infant microbiome and immune system, which can contribute to the development of gastrointestinal issues, pathogenic infections, and immune-related conditions including allergic disease and autoimmune disorders. The investigators hypothesize that establishing Bifidobacterium in the infant gut through delivery of a synbiotic, containing bifidobacterium and human milk oligosaccharides (HMOs; Bifidobacterium's primary nutrient source) may modulate the microbiome and correct this disruption. Research Question: Does synbiotic supplementation on infants and toddlers of various ages alter the gut microbiome as measured by GI-tolerance, fecal microbiome composition, and fecal metabolic profile? Objectives: * Demonstrate shifts in microbiome composition and metabolism * Demonstrate tolerance by observing neutral or positive shifts in GI related behaviors Study Design Overview: Participants Infants aged 2-24 months will be enrolled to evaluate the ability of a synbiotic (human milk oligosaccharide + a Bifidobacterium blend (B. infantis, B. longum, and B. breve)) to modulate the gut microbiome. Infants will be randomly split into two cohorts, one that receives synbiotic supplementation and one that receives a placebo control (lactose). Initially, only ages 12-24 months will be enrolled (first 25 participants), and a safety review will be performed prior to enrolling younger infants. Cohorts * Cohort 1 (supplementation) participants will be aged 2 months to 24 months. They will receive synbiotic supplementation for 1 month. * Cohort 2 (no supplementation) participants will be aged 2 months to 24 months. Will receive placebo (lactose) over the course of 1 month. Design Caretakers will be recruited and screened using an online questionnaire to determine eligibility and cohort assignment. They will give consent using an online one-party consent form (Appendix 1). Participants will be distributed randomly between cohorts 1 and 2. Participants will be shipped the synbiotic or placebo (lactose) and a set of stool sampling kits. Calls with the participant will take place throughout the study as necessary to explain participant responsibilities and ensure compliance. Two sample types will be collected during the study, a full fecal sample and a DNA/RNA tube only. The full fecal sample will be collected at the beginning and end of supplementation and the DNA/RNA tube only will be collected at all other time points. Samples will be collected at supplementation start, one week after supplementation, four weeks after supplementation start (coinciding with the end of supplementation) and 6 weeks after supplementation start (coinciding with a 2 week washout period). Journals and questionnaires will be used for the duration of supplementation as well as 2 weeks before and after to assess the impact of supplementation. Laboratory Assessments: Stool samples will be obtained for each subject. The first sample will be taken before supplementation start. Additional samples will be collected: after 1 week of supplementation, after 1 month of supplementation, and after a 2 week period of no supplementation (a washout period). All samples will be collected at home and shipped back to Persephone Biosciences for processing. The initial sample and the sample after 4 weeks of supplementation will be full samples for metagenomic, metabolomic, and proteomic analysis. The 1 week after supplementation and 2 week post supplementation samples will be DNA/RNA tube samples for metagenomics only. Microbial whole genome sequencing, metabolite analysis, and immune profiling will be performed on stool from complete stool kits. Microbial whole genome sequencing alone will be performed on the DNA/RNA tube kits. Data Collection: Demographic data, general health information, diet and lifestyle information will be collected from the subjects (all self-reported). Journals and questionnaires will be used to evaluate the impact of the synbiotic. Read Less

The goal of this clinical trial is to learn if using deep repetitive transcranial magnetic stimulation (rTMS) targeting the precuneus is feasible, tolerable, and potentially efficacious for memory in Probable Alzheimer's Dementia. Previous work studying rTMS in Alzheimer's is mixed, but recent work studying rTMS of the precuneus is encouraging for both its short-term and long-term effects. The main questions this study aims to answer are: * Is deep rTMS of the precuneus feasible and tolerable in Alzheimer's? * Are there signs of positive brain changes in response to deep rTMS? * Is deep rTMS potentially efficacious for memory in Alzheimer's? Researchers will compare active stimulation to placebo stimulation while obtaining memory testing and measurements of the brain (imaging, scalp electrode measurements, bloodwork) to see if active treatment works to treat mild-to-moderate probable Alzheimer's Dementia. Participants will: * Engage with memory testing, brain scans, and bloodwork during a comprehensive assessment * Visit the clinic 3 times for 12 consolidated rTMS sessions, followed by 4 once weekly maintenance sessions * Be offered a full open-label active treatment course after completing their treatment course if they are initially in the placebo group Read Less

The purpose of this study is to test whether the combination of fianlimab, cemiplimab, and ipilimumab is a safe and effective treatment that causes few or mild side effects for locally advanced or metastatic, unresectable, refractory melanoma. Read Less

This clinical trial tests the safety and effectiveness of hypofractionated stereotactic radiosurgery for treating patients who have undergone surgical resection for grade II meningiomas or grade I meningiomas that have come back after a period of improvement (recurrent). Radiation therapy uses high energy x-rays, particles, or radioactive seeds to kill tumor cells and shrink tumors. Stereotactic radiosurgery is a type of external radiation therapy that uses special equipment to position a patient and precisely deliver radiation to tumors in the body. Hypofractionated radiation therapy delivers higher doses of radiation therapy over a shorter period of time and may kill more tumor cells and have fewer side effects. Hypofractionated stereotactic radiosurgery may be safe, tolerable, and effective in treating patients with grade II or recurrent grade I meningiomas after surgical resection. Read Less

This study will evaluate the use of hyperpolarized 13C MRI (HP 13C MRI) and the HP-derived 13C pyruvate-to-lactate conversion rate constant (kPL) as an early response biomarker in men with treatment-naïve, high-risk, localized or locally advanced prostate cancer receiving neoadjuvant therapy. Read Less