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Tundra lists 13 Observational Study clinical trials. Each listing includes eligibility criteria, study locations, and direct links to research sites in the Tundra directory.
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NCT06866210
Risk Analysis of Intracranial Aneurysm Rupture Through Social Determinants of Health
Intracranial aneurysms (IA) are arterial malformations affecting about 3% of the overall population. Rupture is the most severe complication, as it is associated with nearly 30% of death or severe disability. The available scores to assess rupture risk are mainly based on usual modifiable and non-modifiable risk factors from the literature, but they appear insufficient to predict rupture. Emerging factors, such as sleep apnea syndrome and the use of certain medications, seem to influence the risk of rupture. The study of social determinants of health (SDOH) is highly relevant, given numerous reports showing the impact of SDOH, in addition to vascular risk factors, on vascular diseases like ischemic stroke or myocardial infarction. It is therefore reasonable to study the interaction between rupture risk factors and SDOH on the rupture risk of IA. Several initiatives have been undertaken to assess rupture risk, but few have included SDH. Limitations were often raised, especially regarding data accessibility. However, it is now possible, thanks to artificial intelligence (AI) algorithms, particularly natural language processing (NLP), to reuse large-scale health data to address longstanding issues, such as those posed by SDH. The use of health data warehouses (HDWs) offers an opportunity to collect and analyze accurate, real-world data, particularly through AI and NLP to extract information from medical reports. However, various challenges limit the use of NLP models, notably the dominance of models trained on English medical texts and privacy-related legislative restrictions. Therefore, alongside leveraging these models for clinical research, it is essential to continue efforts to develop transparent French-language models that comply with legislation. Thus, the ARAMISS project proposes to study the interaction between SDH and known risk factors for IA rupture by comparing control populations and rupture cases. This study will be based on a certified health data warehouse (HDW) and an NLP algorithm previously developed by the team. In parallel, the project plans two FAIR-compliant knowledge-sharing approaches to disseminate the algorithm and training corpus to the broader community.
Gender: All
Ages: 18 Years - Any
Updated: 2026-04-08
1 state
NCT07475923
Molecular Surveillance In Early Breast Cancer Using The Tumor-Informed ctDNA Assay Myriad Genetics Precise MRD Test; A Prospective Observational Multicenter Study (The MRD Molecular Surveillance Study)
To learn about changes in ctDNA during the diagnosis, treatment, and post-treatment surveillance of EBC.
Gender: All
Ages: 18 Years - Any
Updated: 2026-03-17
1 state
NCT07424872
Project VERANDA: Requirement Analysis Survey
Between 0.6% and 22.2% of the global adult male population has a sexual interest in children (SIIC), depending on evaluation methods \[1\]. SIIC constitutes a major risk factor for child sexual abuse (CSA) and viewing of child sexual abuse material (CSAM). The true rates of CSA offences cannot be estimated, but self-report studies find 30 times higher rates of child-reported CSA compared to reports from child protection services or police. Engagement in therapy is a protective factor against the risk of child sexual abuse and can lead to reductions in CSAM consumption and severity. Anticipated negative therapist behaviour is associated with less willingness to seek treatment. The fear of being reported by the therapist discourages participation in therapy, a concern complicated by mandatory reporting laws in some countries. Negative attitudes towards ISIC are high, and SIIC may be the most stigmatised trait globally. Identifying barriers to treatment for ISIC, and of measures to overcome them, is important to increase therapy engagement, with the goal to improve wellbeing, reduce CSAM consumption, and reduce the risk of CSA offences. Patient anonymity during therapy may play an important role in increasing disclosure of stigmatised traits. It remains unclear whether anonymous therapy addresses patient treatment anxieties and therefore increases the comfort or willingness to engage in therapy. To address this research gap, we conduct an anonymous online survey with ISIC to answer the following questions: RQ1. Can online therapy preferences be identified for minor-attacted individuals and for their therapists? RQ2. Are there individual factors that predict stigmatized individuals' online therapy preferences? (E.g. Trust, Self-Stigma) RQ3. Are there differences between the different stigmatized groups', therapists, and general populations' online therapy preferences?
Gender: All
Ages: 18 Years - Any
Updated: 2026-03-13
1 state
NCT07396064
Bridging the Gap: Enhancing Cancer Care for Underserved Populations With the Veris Health Cancer Care Platform
The proposed study aims to optimize and validate the Veris Cancer Care Platform for the needs of medically underserved cancer patients receiving outpatient cancer therapy. The Veris Health platform is a remote patient monitoring and communication system designed to bridge the gap between clinical visits and provide oncology care teams with objective data during high-risk periods. This study will specifically focus on optimizing the Veris Health platform for patients with language barriers, limited access to technology, and socioeconomic disparities. By incorporating user-centered design and working closely with community health centers, the research team will ensure that the platform is culturally and linguistically appropriate, easy to use, and accessible for all patients. The study will use a mixed-methods approach to validate the effectiveness of the optimized platform, including quantitative data analysis and qualitative interviews with patients and healthcare providers. The goal is to demonstrate the potential for the Veris Health platform to improve outcomes for vulnerable populations by reducing hospitalizations, emergency department visits, and the economic burden of cancer care.
Gender: All
Ages: 18 Years - Any
Updated: 2026-02-09
1 state
NCT07374614
Iruplinalkib in ALK-Positive Advanced Lung Adenocarcinoma After Lorlatinib
This observational study aims to evaluate the real-world effectiveness and safety of iruplinalkib in patients with advanced ALK-positive lung adenocarcinoma who have progressed on or are intolerant to prior lorlatinib therapy. The results are expected to provide real-world evidence to inform clinical decision-making for this heavily pretreated patient population.
Gender: All
Ages: 18 Years - Any
Updated: 2026-01-29
1 state
NCT06899308
Health Surveillance at Constructor University Bremen (CUB) and Among HAW-Hamburg Employees
The aim of Health Surveillance is to analyze and describe the state of health of students at Constructor University, key influencing factors and individual resources by using mixed-method design.
Gender: All
Ages: 18 Years - Any
Updated: 2025-12-19
NCT07270627
French Military Firefighters to Assess Relationships Between Exposome and Health.
The aim of the study is to describe professional exposures and health events among French military firefighters (both active-duty personnel and veterans) and identify potential relationships between the exposome (the total history of occupational and personal exposures) and health status in these populations. The study is based on a self-administered questionnaire that collects retrospective and present information about exposures and health conditions.
Gender: All
Ages: 18 Years - Any
Updated: 2025-12-08
NCT07117227
Development and Validation of RCC Predicting Model With Emulated-target Trial
This single-center study utilizes real-world data (2012-2024) from 4700 renal cell carcinoma (RCC) patients at Peking University Third Hospital to: (1) Develop and validate a prognostic prediction model specifically for RCC patients, including those with venous tumor thrombus (VTT); (2) Compare the performance of this new model against existing RCC prediction models in both the overall RCC cohort and the VTT subgroup; (3) Employ an emulated target trial (ETT) methodology to evaluate whether risk-stratified treatment based on the prediction model (grouping patients as high/medium/low risk) improves survival outcomes (Overall Survival, Recurrence-Free Survival) and health economic outcomes (Quality-Adjusted Life-Years, Incremental Cost-Effectiveness Ratio), compared to non-stratified treatment group.
Gender: All
Ages: 18 Years - 80 Years
Updated: 2025-08-12
1 state
NCT07089914
Health Surveillance at University of Applied Science Hamburg (HAW)
The aim of Health Surveillance 2025 is to analyze and describe the state of health of employees at University of Applied Science Hamburg, key influencing factors and individual resources.
Gender: All
Ages: 18 Years - Any
Updated: 2025-08-12
NCT07072741
Assessing the Feasibility and Acceptability of Watching Queen of Katwe as a Role Model Intervention Among Adolescents in High Schools in Kenya
This study will test whether using the film Queen of Katwe as a role model story can help motivate and engage high school students in Kenya. The film is based on the true story of Phiona Mutesi, a Ugandan girl who becomes a chess champion despite growing up in poverty. The study will take place in a mixed secondary school in Ngong town, Kajiado County, with about 250 students aged 13 to 19. Students will watch the film at school. To see if the approach works well, researchers will collect data before and after the film showing. They will check: 1. Feasibility (how easy it is to carry out, including costs and logistics) 2. Acceptability (how students and teachers feel about it) 3. Engagement (how involved students are) Surveys and focus groups will be used to gather feedback. The goal is to see if this low-cost method could be used more widely to support learning and motivation in schools.
Gender: All
Ages: 13 Years - 19 Years
Updated: 2025-07-18
NCT06316752
The Natural History of Sialidosis Type I
Sialidosis type 1 is an autosomal recessive disorder caused by bialleic NEU1 gene mutations. Patients with sialidosis type I present variable neurological and eye dysfunction and the progression rate is variable. The goal of this protocol is to assess the neurological and ophthalmological status of these patients and characterize the clinical and laboratory abnormalities in order to determine the natural history of the disease. Patients will be followed every 6 month with comprehensive clinical, neurological and ophthalmological examinations combined with neuropsychological, blood, radiological and electrophysiological tests.
Gender: All
Ages: 12 Years - 80 Years
Updated: 2025-05-20
1 state
NCT06542263
Clinical Study on the Effect of CPAP on AF Recurrence After Catheter Ablation in Patients with AF and OSA
Atrial fibrillation (AF) is the most common sustained arrhythmia in clinical practice, significantly increasing the risks of death, stroke, heart failure, cognitive impairment, and dementia, thus severely impacting patients' quality of life. However, for AF patients with concomitant cardiovascular risk factors, particularly those with obstructive sleep apnea (OSA), the success rate of catheter ablation is significantly reduced. Continuous positive airway pressure (CPAP) is currently an effective treatment for OSA, effectively correcting nocturnal intermittent hypoxia and fragmented sleep caused by OSA. However, the effect of CPAP therapy on AF recurrence in patients with OSA undergoing catheter ablation remains controversial. Faced with conflicting research findings, our team recently conducted a meta-analysis (registration number CRD42023398588) to assess the impact of CPAP on AF recurrence post catheter ablation in patients with AF and OSA, suggesting that CPAP significantly reduces AF recurrence post catheter ablation (RR = 0.58, P \< 0.01). However, considering the limited number of included studies, potential bias risks, and confounding factors, our meta-analysis results await further confirmation through real-world studies by our team. Therefore, our team plans to conduct further research on the impact of CPAP on AF recurrence post catheter ablation in patients with moderate to severe OSA, aiming to provide clinical guidance for the treatment of AF in patients with moderate to severe OSA.
Gender: All
Ages: 18 Years - Any
Updated: 2025-01-23
1 state
NCT06361602
Exploring the Effectiveness and Factors Affecting the Collection of Single Nucleated Cells From Different Volunteers
1. 80 cases of healthy donors were subjected to peripheral blood single nucleated cells (PBMC) collection and analyzed the effects of age, body mass index (BMI), blood routine indexes before collection, collection of circulating blood volume, volume of processed blood and the number of circulations, etc., on the PBMC obtained from both men and women, and explored the effects of PBMC collection in different volunteers and the factors affecting the collection. and the influencing factors. 2. The data obtained will provide a reference for the MNC threshold for the subsequent clinical trials of immunocell therapy in hospitals. 3. From the screening of volunteers, PBMC collection and transportation conditions and other specific details of the operation, risk assessment and the establishment of a safe operation standard process, for the hospital to carry out subsequent clinical trials of immune cell therapy to provide an effective reference.
Gender: All
Ages: 18 Years - 55 Years
Updated: 2024-04-12