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Tundra Space

Clinical Research Directory

Browse clinical research sites, groups, and studies.

8 clinical studies listed.

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Healthy Donors

Tundra lists 8 Healthy Donors clinical trials. Each listing includes eligibility criteria, study locations, and direct links to research sites in the Tundra directory.

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RECRUITING

NCT00571389

A Biospecimen Collection Study of Leukapheresis-Derived Circulating Tumor Cells, Immune Cells, and Progenitor Cells.

Primary Objective: This is a study to investigate the feasibility of harvesting, expanding, and selecting T lymphocytes from cancer patients and healthy volunteers. The preliminary objective of this study is aimed at selecting PD-1+ and CTLA4+ T cells and other cellular fractions from peripheral blood of cancer patients and healthy volunteers by using specific conjugated antibodies, evaluating their functional ex vivo anti-tumor cytotoxicity against targeted autologous tumor cells.

Gender: All

Ages: 5 Years - Any

Updated: 2026-03-18

1 state

Solid Tumor, Adult
Healthy Donors
COVID-19 Donors
ENROLLING BY INVITATION

NCT00339911

Collection and Distribution of Samples From Healthy Donors for In Vitro Research at the NCI-Frederick

Background -NCI-Frederick scientists performing in vitro studies involving human specimens have a need for a reliable and consistent source of samples which protects the donor from research risks. Objective -The purpose of this protocol is to establish a centralized repository for the collection and distribution of samples (either blood, buccal mucosal cells, semen, urine, or nail clippings) from paid, healthy volunteer donors for in vitro research conducted by NIH investigators located at NCI-Frederick and Ft. Detrick. Research will include, but are not limited to, genotype analysis, immune function studies, drug screening, vaccine development, method development, quality control testing of reagents, and propagation of infectious agents, including HIV. Eligibility: Healthy NCI-Frederick employees and other NIH staff located at Ft. Detrick will be recruited. Potential donors will be excluded if screening indicates exposure to HIV, HTLV, Hepatitis C or Hepatitis B virus infection. Study Design: Investigators requesting to participate to the Research Donor Program (RDP) by receiving samples for research use will be required to submit a written memo of request, briefly describing the nature of the research and providing assurance that samples provided through this protocol will be used solely for in vitro research. These Investigators will receive samples that will be either anonymous or coded, depending on the specific need. Codes will be securely maintained and under no circumstances will donor identity be released to Investigators. Donors will receive financial compensation for their time, discomfort and inconvenience according to an established schedule; compensation for blood donation is based on the volume donated.

Gender: All

Ages: 18 Years - Any

Updated: 2025-12-24

1 state

Healthy Donors
ACTIVE NOT RECRUITING

NCT06834451

Bioequivalence Study of Revolade® Eltrombopag 50 mg

Bioequivalence Study

Gender: All

Ages: 18 Years - 50 Years

Updated: 2025-06-19

1 state

Healthy
Healthy Donors
NOT YET RECRUITING

NCT06834503

Bioequivalence Study of Clonazepam 2 Mg Tablets

Demonstrate the bioequivalence in 1 study, in fasting condition of two formulations of clonazepam 2 mg Tablets / tablets immediate release in order to establish that there are no significant pharmacokinetic differences.

Gender: All

Ages: 18 Years - 50 Years

Updated: 2025-03-10

Healthy
Healthy Donors
ACTIVE NOT RECRUITING

NCT06861842

Bioequivalence Study of Lithium Carbonate 300 mg Tablets. Actilitio® in Healthy Subjects

A bioequivalence study of lithium carbonate will be developed in 24 healthy subjects, in fasting condition

Gender: All

Ages: 18 Years - 50 Years

Updated: 2025-03-06

1 state

Healthy
Healthy Donors
RECRUITING

NCT06842407

Novel Targets for the Development of Monoclonal Antibodies for Immunotherapy)

The first objective of the project consists in the preclinical validation of new possible molecular targets associated with intratumoral T regulatory cells. The second objective consists in the selection of monoclonal antibodies with therapeutic potential, specific for the selected targets.

Gender: All

Ages: 18 Years - Any

Updated: 2025-02-24

Healthy Donors
NOT YET RECRUITING

NCT06823362

Bioequivalence Study of Pentoxifylline 400 Mg in Healthy Subjects Under Fasting and Fed Conditions

Two bioequivalence studies of Pentoxifylline will be carried out in 40 healthy subjects, the first in a fasting condition 40 healthy subjects, the first in fasting condition and the second in postprandial condition. postprandial condition, the two studies follow the same design: Complete crossover design, randomized, comparative of two study formulations, in single dose of 400 mg of Pentoxifylline sustained release tablets, 2 periods, with a washout time of 7 days between doses, the 7 days between doses, participation as a subject in these studies involves a risk studies involves a higher than minimal risk for subjects.

Gender: All

Ages: 18 Years - 50 Years

Updated: 2025-02-17

Healthy
Healthy Donors
RECRUITING

NCT06738329

Investigating the Impact of the Seaweed Derived Food Additive, Carrageenan, on the Human Gut Microbiome

The goal of this study is to investigate whether a seaweed derived food additive, carrageenan, has an impact on the human gut microbiome in vivo. The primary purpose is to assess whether consumption of a carrageenan containing product for 4 weeks can alter the bacterial composition of the gut microbiome in healthy individuals and whether the addition of a prebiotic fibre, inulin, to the product has an enhanced beneficial impact of the gut composition. The main questions to answer are: Does the consumption of a confectionary item containing carrageenan and inulin lead to a positive impact on the faecal microbial community when compared to the confectionary item containing no carrageenan and no inulin (placebo)? Participants will be asked to consume 2 gummy sweets for 4 week period and provide stool and urine samples on 3 occasions over a 9 week period. Does the consumption of a confectionary item containing carrageenan and inulin improve gastrointestinal comfort measured using overall SHS-GI score when compared to baseline measurements recorded during run in period?

Gender: All

Ages: 18 Years - 55 Years

Updated: 2024-12-17

1 state

Gut Microbiome
Healthy Donors