Tundra Space

Tundra Space

Clinical Research Directory

Browse clinical research sites, groups, and studies.

4 clinical studies listed.

Filters:

Chronic

Tundra lists 4 Chronic clinical trials. Each listing includes eligibility criteria, study locations, and direct links to research sites in the Tundra directory.

This data is also available as a public JSON API. AI systems and LLMs are encouraged to use it for structured queries.

COMPLETED

NCT07784452

Comparing Hepatitis B Vaccination Schedules in Patients on Hemodialysis

People with kidney failure who are on dialysis have a weaker immune response to the hepatitis B vaccine than healthy people. Even after vaccination, many dialysis patients do not develop enough protection against hepatitis B infection. Doctors do not agree on whether giving 3 doses or 4 doses of the vaccine works better for these patients. This study will compare two vaccination schedules using a stronger (double) dose of the hepatitis B vaccine in people on maintenance hemodialysis: Group 1 will receive 3 doses of the vaccine, given at the start of the study, 1 month later, and 6 months later. Group 2 will receive 4 doses of the vaccine, given at the start of the study, 1 month later, 2 months later, and 6 months later. One month after finishing their vaccine schedule, participants will have a blood test to check their antibody levels against hepatitis B. A blood level of 10 mIU/mL or higher will be considered evidence of protection (called seroprotection). The study will compare how many people in each group reach this protective level. The goal of this study is to find out which vaccination schedule (3 doses or 4 doses) gives better protection against hepatitis B in people on dialysis. The results may help doctors choose more effective vaccination strategies for dialysis patients in the future.

Gender: All

Ages: 20 Years - 65 Years

Updated: 2026-08-25

1 state

Hepatitis B
ESRD (End Stage Renal Disease)
Kidney Failure
+1
RECRUITING

NCT07128966

Direct to Patient Minimal Risk Biospecimen and Data Collection Research

This study aims to help researchers better understand health conditions and develop improved tests, treatments, and cures for diseases. Joined Bio collects health data, lifestyle information, biological samples, and feedback from participants and provides this to qualified research partners.

Gender: All

Ages: 18 Years - 90 Years

Updated: 2026-05-05

1 state

Healthy
Lupus
Celiac
+3
ACTIVE NOT RECRUITING

NCT02577120

Wound Healing Endpoint and Recurrence

This study is a continuation of a previously approved protocol conducted at Ohio State University and Indiana University. The first two aims of the original protocol have been completed, and this protocol will finish enrollment for the third aim, comparing Hi TEWL and Low TEWL measurements, and whether a HiTEWLmeasurement indicates a seemingly healed wound is more likely to recur/reopen toa new wound. Of the 105 desired subjects, 62 subjects have already been recruited and completed their study participation at the previous university. 43 additional subjects will be recruited to complete the enrollment goal here at the University of Pittsburgh.

Gender: All

Ages: 18 Years - Any

Updated: 2025-09-26

1 state

Chronic Wound
Burn Wound
Diabetic Foot Ulcers
+4
RECRUITING

NCT07002944

Pulsed Radiofrequency of Shoulder Individual Nerves Versus Brachial Plexus in Management of Chronic Post Mastectomy Shoulder Pain

this study aims to assess the role of pulsed radiofrequency of the brachial plexus or pulsed radiofrequency of shoulder individual nerves in the management of post-mastectomy shoulder pain.

Gender: All

Ages: 18 Years - 65 Years

Updated: 2025-06-04

Pulsed Radiofrequency
Shoulder Individual Nerves Brachial Plexus
Chronic
+2