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Clinical Research Directory

Browse clinical research sites, groups, and studies.

42 clinical studies listed.

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Adult

Tundra lists 42 Adult clinical trials. Each listing includes eligibility criteria, study locations, and direct links to research sites in the Tundra directory.

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RECRUITING

NCT00004577

Study of New Magnetic Resonance Imaging Methods of the Brain

The purpose of this investigation is to develop improved magnetic resonance imaging (MRI) techniques and hardware for studying brain function. MRI is a diagnostic tool that provides information about brain chemistry and physiology. This study will evaluate new MRI methods for monitoring blood flow to regions of the brain in response to simple tasks. The MRI machine used in this study is more powerful than those in most hospitals, permitting a higher visual resolution. Normal healthy volunteers over 18 years old may be eligible for this study. Candidates will be screened with a medical history and questionnaire, and a neurological examination. Study participants will have a yearly MRI scan. For this procedure, the subject lies on a stretcher that is moved into a donut-shaped machine with a strong magnetic field. A lightweight circular or rectangular coil a device that improves the quality of the images may be placed on the head. The scan time varies from 20 minutes to 3 hours; most scans last between 45 and 90 minutes. During the scan, the subject may perform simple tasks, such as listening to tapes, tapping a finger, moving a hand, watching a screen, or smelling a fragrance. More complex tasks may require thinking about tones or pictures and responding to them by pressing buttons. Information from this study will be used to develop better imaging methods that will, in turn, permit a greater understanding of normal and abnormal brain behaviors. ...

Gender: All

Ages: 18 Years - 120 Years

Updated: 2026-04-07

1 state

Healthy Volunteer
Magnetic Resonance Imaging
Healthy
+3
RECRUITING

NCT06867198

Peanuts for Cardiometabolic, Brain, and Intestinal Health

The overall objective of this 14-month randomized crossover study is to seek evidence demonstrating that daily consumption of peanuts and peanut products improve cardiometabolic, cognitive, and intestinal health in a racially diverse prediabetes population.

Gender: All

Ages: 20 Years - 59 Years

Updated: 2026-03-27

1 state

Prediabetes
Prediabetes (Insulin Resistance, Impaired Glucose Tolerance)
Cognition
+5
RECRUITING

NCT06735599

Wild Blueberries for Gut, Brain, and Heart Health in Adults With High Blood Pressure

The purpose of the study is to determine the effectiveness of wild blueberries on cardiovascular health, cognitive function, and gut microbiota composition in non-Hispanic Black and White adults with elevated blood pressure.

Gender: All

Ages: 45 Years - 65 Years

Updated: 2026-03-27

1 state

Hypertension (Without Type 2 Diabetes Mellitus)
High Blood Pressure
Male
+13
NOT YET RECRUITING

NCT07498881

LasaiON is an Evidence-informed, Multimodal Self-regulation Program Designed to Reduce Emotional Distress and Strengthen Stress-regulation Skills by Combining Transcutaneous Auricular Vagus Nerve Stimulation (taVNS) With Breathing Supported by Heart-rate Variability Biofeedback (HRV-B; emWave).

The goal of this clinical trial is to evaluate whether the LasaiON program, which combines transcutaneous auricular vagus nerve stimulation (taVNS) with breathing supported by heart rate variability biofeedback (HRV-B; emWave), reduces emotional distress and improves stress-regulation processes in adults. The study will also assess the safety, tolerability, and feasibility of the intervention. The main questions it aims to answer are: 1. Does the LasaiON program reduce emotional distress in adults? 2. What physiological, psychological, and verbal-cognitive changes are observed following the intervention? 3. What discomforts, adverse effects, or tolerability issues do participants experience during the program? Researchers will use a prospective 2 × 2 factorial randomized controlled design to examine the effects of stimulation condition (active taVNS vs. sham taVNS) and training condition (active HRV-biofeedback vs. control training), as well as their potential interaction. Participants will be randomly allocated in equal proportions (1:1:1:1) to one of four groups: sham taVNS + control training, sham taVNS + HRV-biofeedback, active taVNS + control training, or active taVNS + HRV-biofeedback. Participants will: * undergo baseline assessments on Day 1 before the intervention; * complete 5 consecutive daily 60-minute sessions according to group allocation; * undergo post-intervention assessments on Day 5 after the final session; * complete psychometric, physiological, and verbal-cognitive assessments, including STAI, HAM-D, WHO-5, EEG, skin conductance, startle response, heart rate variability measures derived using Kubios HRV Premium, and daily five-word reports with valence ratings analyzed using IRaMuTeQ; * have adherence and tolerability recorded at each session using a checklist.

Gender: All

Updated: 2026-03-27

1 state

Adult
NOT YET RECRUITING

NCT07495540

Comparison of the Effects of Free Weight and Machine-Based Exercises on Muscular Parameters

The aim of our study is to compare and investigate the effects of resistance exercises performed with free weights and those performed using machine systems on muscular parameters and neuromuscular control.

Gender: All

Ages: 18 Years - 30 Years

Updated: 2026-03-27

1 state

Resistance Exercise
Neuromuscular Adaptations
Muscle
+1
RECRUITING

NCT06735651

Wild Blueberries for Gut, Brain, and Cardiometabolic Health in Prediabetes

The goal of this clinical trial is to determine the effectiveness of using a freeze-dried wild blueberry powder on cardiometabolic health, cognitive function, and gut microbiota composition in adult women with prediabetes.

Gender: FEMALE

Ages: 20 Years - 65 Years

Updated: 2026-03-25

1 state

Prediabetes (Insulin Resistance, Impaired Glucose Tolerance)
Female
Adult
+9
ACTIVE NOT RECRUITING

NCT06645886

A Study to Investigate the Safety and Efficacy of KQB198 as Monotherapy and in Combination in Participants With Advanced Hematologic Malignancies

The goal of this clinical trial is to learn if KQB198 works to treat advanced hematologic malignancies in adults. It will also learn about the safety of KQB198. The main questions it aims to answer are: * What is the safe dose of KQB198 by itself or in combination with other anti-cancer drugs? * Does KQB198 alone or in combination with other anti-cancer drugs decrease the size of the tumor? * What happens to KQB198 in the body? Participants will: * Take KQB198 daily, alone or in combination with another anti-cancer drug * Visit the clinic about 8 times in the first 8 weeks, and then once every 4 weeks after that

Gender: All

Ages: 18 Years - Any

Updated: 2026-03-25

25 states

Hematologic Malignancies
Adult
RECRUITING

NCT07480616

Efficacy of Indonesian Asthmatic Gymnastic as Combine Pulmonary Rehabilitation Based on Asthma Classification

This study aims to evaluate the efficacy of Indonesian Asthma Gymnastic for stable asthmatic patients in all asthma classification. The outcome measurements includes 6 minutes walk test, Asthma Control Test, peak flow rate value, and lung function. All participants have been in routine standard treatment of asthma (medication, education of healthy life style and smoking cessation).

Gender: All

Ages: 18 Years - 65 Years

Updated: 2026-03-18

Asthma (Diagnosis)
Adult
RECRUITING

NCT05024175

Long-term Follow-up of Subjects Treated With CAR T Cells

This is a single site, non-randomized, open-label, long-term safety and efficacy follow-up study for Phase 1 studies that evaluate the safety and efficacy of CAR T cells: NCT05660369 (DF/HCC# 22-175) and NCT06026319 (DF/HCC# 23-474).

Gender: All

Ages: 18 Years - Any

Updated: 2026-03-16

1 state

Long Term Adverse Effects
CAR-T
Duty to Follow Up
+4
RECRUITING

NCT07354607

Effect of Transcutaneous Electrical Stimulation on Peripheral Blood Flow

The goal of this clinical trial is to learn if transcutaneous electrical nerve stimulation can affect blood flow in healthy volunteers. The main question it aims to answer is: Determine the stimulation parameters (frequency in the range 5- 100Hz and proximal or distal placement) inducing the most significant hyperaemic response in volunteers. Participants will attend to one visit ( 1h30) , 6 protocol of stimulation will be tested on his arm . If his agree, an optionnal measure will be made during another visit. During this optionnal visit, two modalities of intensity adjustment will be tested in regard of the result of the first part of the study.

Gender: All

Ages: 18 Years - Any

Updated: 2026-03-10

Volunteer
Adult
NOT YET RECRUITING

NCT07457242

Probiotic Research: Open-label Functional Intervention and Longitudinal Evaluation in Healthy Adults

This study is a pre-post, open-label cohort study designed to investigate how a food-grade probiotic supplement affects biological measurements and wellbeing in healthy adults. Participants will take one capsule daily for either 1 month or 6 months. During the study, participants will complete online cognitive tasks and provide blood and stool samples collected during home visits by trained staff. The samples will be analysed to explore changes in gut bacteria and other biological markers. This study aims to understand whether the supplement is well tolerated and whether measurable biological changes occur. The study does not involve any experimental drugs or invasive procedures beyond blood sampling and stool collection, and participants will not be asked to change any current prescribed medications or treatments; with eligibility exclusions applying for recent antibiotics or immunosuppressants. The supplement is being studied for research purposes only and is not intended to diagnose, treat, or prevent disease. Participants will be invited to participate in a follow-up visit to assess long-term effects.

Gender: All

Ages: 18 Years - Any

Updated: 2026-03-09

Cognition
Multiomics
Microbiome Analysis
+8
NOT YET RECRUITING

NCT07440368

Enterocyte Injury and Acute Gastrointestinal Dysfunction in Critical Illness

Acute gastrointestinal injury (AGI) is a common but not fully understood organ dysfunction in critically ill patients. Current AGI grading systems rely primarily on clinical presentation and feeding tolerance, which are inherently subjective and may not accurately reflect the underlying biological severity of intestinal damage. Intestinal fatty acid-binding protein (I-FABP) is a protein expressed almost exclusively in the cytoplasm of mature small intestinal epithelial cells. In cases of ischemia, inflammation, or mechanical injury, I-FABP is rapidly released into the bloodstream and subsequently excreted in the urine. These characteristics make I-FABP a highly specific biomarker for intestinal epithelial cell injury and intestinal ischemia. A prospective study combining paired blood and urine I-FABP measurements, standardized AGI assessment, and careful consideration of surgical status was conducted to elucidate the role of intestinal epithelial cell injury in acute gastrointestinal dysfunction.

Gender: All

Ages: 18 Years - Any

Updated: 2026-02-27

Patients Admitted to the ICU
Expected Hospital Stay ≥48 Hours
Adult
NOT YET RECRUITING

NCT07411781

PIN in Combination With Sintilimab in Previously Treated pMMR/MSS CRC With Hepatic Metastases

In this single-center,open-label, phase I study, the safety and efficacy of PIN in combination with anti-programmed cell death -1 (anti-PD1) antibody therapeutic regimen (sintilimab) will be evaluated in patients with advanced proficient mismatch repair/microsatellite stable (pMMR/MSS) colorectal cancer (CRC) with hepatic metastases . A total of 25 to 30 patients are planned to be enrolled and receive PIN plus sintilimab combined treatment. It aims to: 1).assess the safety and antitumor effects of the above combined treatment regimen. 2).detect the dynamic changes and molecular characteristics of PIN induced CD8+ T cells with special phenotype in peripheral blood (PB) and transformation of tumor microenvironment (TME) after the treatment with PIN. 3).evaluate the immunological or clinical predictive biomarkers for toxicity and efficacy.

Gender: All

Ages: 18 Years - 75 Years

Updated: 2026-02-17

1 state

Colorectal Cancer
Adult
NOT YET RECRUITING

NCT07414160

Association Between Dynamic Prealbumin Trajectories and Prognosis in Critically Ill Patients

Nutritional support therapy is a crucial part of ICU patient care, as both malnutrition and overnutrition can lead to adverse clinical outcomes. Meticulous monitoring of nutritional support is essential. Unfortunately, to date, there are no biomarkers available to assess the appropriateness of nutritional support in the ICU setting. However, mounting evidence suggests that phenotypic analysis of patients using nutritional biomarkers or risk screening scores for adaptation may enhance our ability to characterize patients in terms of prognosis and likelihood of treatment response. This study aims to identify the trajectory patterns of prealbumin changes based on dynamic monitoring data of prealbumin during hospitalization of critically ill patients, and to analyze the Association between different trajectory groups and patient prognosis. In addition, this study will further analyze its Association with nutritional intake and nutritional indicators, thereby assessing the potential value of prealbumin change trajectories in terms of the adequacy and effectiveness of nutritional support for critically ill patients.

Gender: All

Ages: 18 Years - Any

Updated: 2026-02-17

ICU
Critical Illness
Adult
NOT YET RECRUITING

NCT07385950

Evaluation of the Diagnostic Efficacy of a αvβ6/FAP-Targeting Heterodimeric Probe in Patients With Malignant Solid Tumors

Malignant tumors pose a grave threat to human health and impose a substantial burden on society. Molecular imaging, which enables non-invasive, in vivo visualization of biological processes at the molecular level, is crucial for early diagnosis and treatment monitoring, thereby improving clinical management. Currently, molecular probes targeting fibroblast activation protein (FAP) and integrin αvβ6, such as ⁶⁸Ga-labeled FAPI and ⁶⁸Ga-Trivehexin, have shown promise in oncologic PET imaging, yet each has limitations. FAP is predominantly overexpressed in cancer-associated fibroblasts within the tumor stroma, with minimal expression in normal tissues. However, radiotracers like ⁶⁸Ga-FAPI often exhibit physiological uptake in normal organs (e.g., salivary glands, pancreas, uterus), leading to elevated background signals and potentially reduced diagnostic contrast. Conversely, integrin αvβ6 is primarily expressed on tumor cell surfaces and is upregulated in many malignancies. Nonetheless, probes like ⁶⁸Ga-Trivehexin suffer from high renal retention with slow clearance and notable physiological gastrointestinal uptake, resulting in suboptimal target-to-background ratios and compromised image quality. Given the complementary expression profiles of FAP (stroma) and integrin αvβ6 (tumor cells), we hypothesize that a bispecific molecular probe capable of simultaneously engaging both targets could achieve superior tumor targeting through a synergistic "dual-lock" mechanism. This prospective exploratory clinical trial aims to evaluate the diagnostic efficacy and safety of a novel bispecific probe, named ⁶⁸Ga-B6FA-01, in patients with malignant solid tumors. The ultimate goal is to develop a superior imaging strategy for early and precise tumor diagnosis, treatment response assessment, and personalized therapeutic decision-making.

Gender: All

Ages: 18 Years - 90 Years

Updated: 2026-02-04

1 state

PET / CT
Solid Tumors
Adult
RECRUITING

NCT06923163

The Effect of Exercise on Metabolic Alteration

The goal of this clinical trial is to study the effectiveness of aerobic exercise in treating obesity in adults and to assess the efficacy of exercise. The primary research questions it seeks to address are as follows: * To what extent does exercise increase the total energy expenditure of participants? * Why and how does the energy expenditure from exercise not fully compensate for the total energy expenditure (TEE)? * Researchers will assess the efficacy and potential challenges of using exercise as a treatment for obesity by comparing the measurement data before exercise intervention (week 0), immediately after exercise intervention (week 12), and 8 weeks post-completion of exercise intervention (week 20). Participants will engage in the following activities: * Engage in running sessions supervised five times a week for a duration of 12 weeks. * Attend laboratory sessions both before and after the exercise intervention period for metabolic and anthropometric measurements, as well as sample collection. * Return to the laboratory for further metabolic and anthropometric measurements and sample collection8 weeks post-completion of exercise intervention.

Gender: All

Ages: 18 Years - 40 Years

Updated: 2026-01-21

1 state

Sedentary Behavior
Healthy Participants
Adult
RECRUITING

NCT07173205

Optimizing the AYA Survivors' Coping and Emotional Needs Toolkit

Our team has developed a digital intervention that aims to help adolescent and young adult cancer survivors (AYAs) manage symptoms of depression. This tool includes one psychoeducation component and four components that are based on evidence-based interventions for depression. The goal of this study is to test which component or combination of components meaningfully contribute to improvements in depressive symptoms among AYAs.

Gender: All

Ages: 15 Years - 39 Years

Updated: 2026-01-07

1 state

Depression
Cancer
Adolescent
+2
RECRUITING

NCT07230951

Interaction Between White Potato Consumption and Meal Timing on Glycemic Response and Appetite in Adults

The purpose of this study is to evaluate the interaction between white potato consumption and meal timing on glycemic response, subjective appetite, and energy intake in adults. The investigators hypothesize that white potatoes will modulate glycemic response, enhance satiety, and mitigate subsequent meal consumption and overall food intake when compared with meals containing low glycemic carbohydrates. Furthermore, they anticipate that the timing of white potato consumption will yield differential effects, with breakfast consumption exerting a more pronounced impact on satiety and subsequent food intake reduction compared to dinner consumption.

Gender: All

Ages: 18 Years - 65 Years

Updated: 2025-11-17

1 state

Healthy
Adult
Appetite
+2
RECRUITING

NCT07163728

Leptin: A Marker for AML Chemo-Sensitivity

Acute Myeloid Leukemia (AML) is a malignant clonal disorder of hematopoietic stem/progenitor cells, with a five-year survival rate of approximately 30%. Chemotherapy resistance and relapse remain major challenges. Increased bone marrow adipocytes contribute to AML cell drug resistance.This study found that elevated levels of the adipokine leptin enhance oxidative phosphorylation (OXPHOS) in AML cells, accompanied by increased mitochondrial reactive oxygen species (mtROS), which stimulates antioxidant capacity and thereby induces chemotherapy resistance. By establishing a correlation between leptin levels in bone marrow supernatant and clinical outcomes in AML patients, this research provides novel strategic insights for targeting drug resistance and improving prognostic evaluation.

Gender: All

Ages: 18 Years - Any

Updated: 2025-09-09

1 state

AML
Adult
NOT YET RECRUITING

NCT07133932

Phrenic Nerve Stimulation for Reducing Ventilation Duration in Acute Cerebral Infarction: A Multicenter Randomized Controlled Trial

The goal of this clinical trial is to learn if non-invasive phrenic nerve stimulation works in adult acute cerebral infarction participants undergoing mechanical ventilation. It will also learn about the safety of non-invasive phrenic nerve stimulation. The main questions it aims to answer are: 1. Can non-invasive phrenic nerve stimulation shorten the duration of ventilator use and improve long-term prognosis? 2. What medical problems do participants have when taking non-invasive phrenic nerve stimulation? Researchers will compare non-invasive phrenic nerve stimulation to a sham stimulation to see if non-invasive phrenic nerve stimulation works. Participants will: 1. Receive 14 days of non-invasive phrenic nerve stimulation or sham stimulation 2. Visit the clinic or call for follow-up at 90 days of onset

Gender: All

Ages: 18 Years - Any

Updated: 2025-08-21

2 states

Cerebral Infarction
Mechanical Ventilation
Acute Cerebrovascular Accident
+1
RECRUITING

NCT07035171

CABGpreHAB - a Feasibility Study Protocol

Patients with ischemic heart disease (IHD) awaiting coronary artery bypass graft (CABG) surgery often face challenges like advanced age, frailty, comorbidities, and physical inactivity. These factors, combined with the physiological and psychological stress of surgery, can hinder postoperative recovery. Traditionally, strategies to improve surgical outcomes focus on the intra- and postoperative periods. However, the pre-surgery waiting period offers a "window of opportunity" for prehabilitation, which aims to enhance patients' functional capacity through exercise, nutrition, and psychological support. The CABGpreHAB feasibility study evaluates the feasibility of a home-based multimodal prehabilitation intervention for patients awaiting elective CABG surgery. This randomized pilot study compares the intervention plus usual care to usual care alone, assessing feasibility outcomes like recruitment, retention, attrition, fidelity, and adherence. The study aims to optimize a subsequent full-scale randomized controlled trial (RCT) and improve patient outcomes by leveraging the pre-surgery period for prehabilitation.

Gender: All

Ages: 18 Years - Any

Updated: 2025-06-29

Ischaemic Heart Disease
Prehabilitation
Coronary Artery Bypass
+3
RECRUITING

NCT07018518

PIN in Combination With Anti-PD1 in Previously Treated Primary Hepatocellular Carcinoma

In this single-center,open-label, phase I study, the safety and efficacy of PIN in combination with programmed cell death protein antibody (anti-PD1) therapeutic regimen will be evaluated in patients with refractory primary advanced hepatocellular carcinoma(HCC) . A total of 25 to 30 patients are planned to be enrolled and receive PIN plus anti-PD1 combined treatment. It aims to: 1).assess the safety and antitumor effects of the above combined treatment regimen. 2).detect the dynamic changes and molecular characteristics of PIN-induced CD8+ T cells with special phenotype in peripheral blood (PB) and transformation of tumor microenvironment (TME) after the treatment with PIN. 3).evaluate the immunological or clinical predictive biomarkers for toxicity and efficacy.

Gender: All

Ages: 18 Years - 75 Years

Updated: 2025-06-22

1 state

Hepatocellular Carcinoma
Adult
RECRUITING

NCT05714007

The Effects of Ferric Derisomaltose on Postoperative Anemia in Spinal Deformity Surgery

The prognosis of patients undergoing spinal deformity surgery is often compromised by perioperative anemia due to iron deficiency. The aim of this randomized, controlled trial was to evaluate whether postoperative ferric derisomaltose intravenous injection may improve anemia and prognosis in patients undergoing spinal deformity surgery comparing with oral iron. Participants will be randomly assigned to the treatment group (intravenous ferric derisomaltose) and the control group (oral iron). Changes in hemoglobin concentration, percentage of anemia correction, changes in iron indicators, patient quality of life, and incidence of adverse events will be analyzed to evaluate the efficacy and safety of iron isomaltoside infusion.

Gender: All

Ages: 18 Years - Any

Updated: 2025-06-13

1 state

Perioperative Anemia
Surgery
Spinal Deformity
+1
RECRUITING

NCT06883149

PIN in Combination With Anti-PD1 in Previously Treated Solid Tumor

In this single-center,open-label, phase I study, the safety and efficacy of PIN in combination with programmed cell death protein antibody (anti-PD1) therapeutic regimen will be evaluated in patients with late-stage advanced solid tumors . A total of 20 to 30 patients are planned to be enrolled and receive PIN plus anti-PD1 combined treatment. It aims to: 1).assess the safety and antitumor effects of the above combined treatment regimen. 2).detect the dynamic changes and molecular characteristics of PIN-induced CD8+ T cells with special phenotype in peripheral blood (PB) and transformation of tumor microenvironment (TME) after the treatment with PIN. 3).evaluate the immunological or clinical predictive biomarkers for toxicity and efficacy.

Gender: All

Ages: 18 Years - 75 Years

Updated: 2025-06-10

1 state

Solid Tumor
Adult