[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100645274":3},{"organization":4,"armGroups":7,"interventions":10,"overallOfficials":10,"centralContacts":10,"locations":10,"responsibleParty":18,"collaborators":10,"id":22,"slug":23,"hasResults":24,"nctId":25,"briefTitle":26,"officialTitle":27,"acronym":10,"eligibilityCriteria":28,"healthyVolunteers":29,"sex":30,"minAge":31,"maxAge":32,"enrollmentInfo":33,"targetDuration":10,"studyType":36,"phases":10,"briefSummary":37,"conditions":38,"keywords":10,"overallStatus":46,"whyStopped":10,"lastUpdateSubmitDate":47,"lastUpdatePostDateStruct":48,"startDateStruct":51,"completionDateStruct":53,"leadSponsor":55,"locationsCount":10},{"fullName":5,"class":6},"Union Hospital, Tongji Medical College, Huazhong University of Science and Technology","OTHER",[8,12,15],{"label":9,"type":10,"description":11,"interventionNames":10},"Healthy Controls (NHCs)",null,"Healthy volunteers without acute or chronic major diseases, aged ≥18 years, who have provided written informed consent. Participants undergo a single blood draw and rectal swab collection.",{"label":13,"type":10,"description":14,"interventionNames":10},"Critically Ill Non-Septic Patients (CI-NS)","Patients admitted to the ICU meeting the criteria for critical illness but without sepsis, as determined by the Sepsis-3 criteria (infection with ΔSOFA ≥ 2 points excluded). Participants are aged ≥18 years, with informed consent obtained from the patient or legally authorized representative. Blood and rectal swab samples are collected at three time points: within 24 hours of ICU admission (D0), Day 2 (D2), and Day 7 (D7). Clinical follow-up extends to 90 days.",{"label":16,"type":10,"description":17,"interventionNames":10},"Critically Ill Septic Patients (CI-Sep)","Patients admitted to the ICU meeting the Sepsis-3 criteria (infection with ΔSOFA ≥ 2 points). Participants are aged ≥18 years, with informed consent obtained from the patient or legally authorized representative. Blood and rectal swab samples are collected at three time points: within 24 hours of ICU admission (D0), Day 2 (D2), and Day 7 (D7). Clinical follow-up extends to 90 days.",{"type":19,"investigatorFullName":20,"investigatorTitle":21,"investigatorAffiliation":5,"oldNameTitle":10,"oldOrganization":10},"PRINCIPAL_INVESTIGATOR","Jiancheng Zhang","Principal Investigator","100645274","metabolic-and-functional-study-of--t-cells-in-critically-ill-patients-100645274",false,"NCT07680816","Metabolic and Functional Study of γδ T Cells in Critically Ill Patients","Subset-specific Metabolic Adaptation and Functional Remodeling of Gamma Delta T (γδ T) Cells in Critically Ill ICU Patients: A Single-center, Prospective, Observational Cohort Study.","Inclusion Criteria:\n\n1. Healthy Control Group (NHC):\n\n   * Age ≥ 18 years.\n   * No acute or chronic major diseases.\n   * Provide written informed consent.\n2. Non-septic Critical Illness Group (CI-NS):\n\n   * Age ≥ 18 years.\n   * Admitted to the ICU and meeting the definition of critical illness.\n   * Excluded from sepsis according to the Sepsis-3 criteria (infection + ΔSOFA ≥ 2 points).\n   * Written informed consent provided by the participant or legally authorized representative.\n3. Septic Critical Illness Group (CI-Sep):\n\n   * Age ≥ 18 years.\n   * Admitted to the ICU and meeting the Sepsis-3 criteria (infection + ΔSOFA ≥ 2 points).\n   * Written informed consent provided by the participant or legally authorized representative.\n\nExclusion Criteria:\n\n* Age \\\u003C 18 years.\n* Known immunodeficiency, HIV infection, active hematologic malignancy, or history of hematopoietic stem cell or solid organ transplantation within the past 3 months.\n* Receipt of T-cell-targeted immunosuppressive therapy (e.g., antithymocyte globulin, calcineurin inhibitors, mycophenolate mofetil, methotrexate, or high-dose corticosteroids \\>1 mg\u002Fkg\u002Fday prednisone equivalent) before ICU admission or within 24 hours after ICU admission.\n* Use of immune checkpoint inhibitors (e.g., anti-PD-1\u002FPD-L1\u002FCTLA-4 antibodies) within the past 6 weeks.\n* Expected ICU stay \\\u003C 24 hours or imminent risk of death (moribund state).\n* Pregnancy or breastfeeding.\n* Active major bleeding.\n* Inability to obtain informed consent.",true,"ALL","18 Years","80 Years",{"count":34,"type":35},105,"ESTIMATED","OBSERVATIONAL","This prospective observational cohort study investigates the subset-specific metabolic adaptation and functional remodeling of cytotoxic γδT cells in critically ill patients with and without sepsis. Emerging evidence indicates that γδT cells, as a bridge between innate and adaptive immunity, play a critical role in early anti-infection defense during sepsis. However, the functional status and underlying regulatory mechanisms of cytotoxic γδT cells in septic patients remain incompletely understood. Our preliminary single-cell transcriptomic analysis revealed that cytotoxic γδT cells from septic patients exhibit significant alterations in cytotoxicity-associated molecules (GZMB, PRF1, GNLY) and mitochondrial oxidative phosphorylation (OXPHOS) pathway genes, particularly COX6C, which correlates with cytotoxic effector molecule expression. This study aims to systematically characterize the proportion, cytotoxicity, and mitochondrial metabolic function of circulating cytotoxic γδT cells across three cohorts: healthy controls, critically ill non-septic patients, and critically ill septic patients. By integrating flow cytometry, mitochondrial function assays, and functional validation experiments, we seek to elucidate the role of COX6C-mediated mitochondrial metabolic abnormalities in cytotoxic γδT cell dysfunction, providing theoretical basis for understanding immune dysregulation in sepsis and identifying novel therapeutic targets.",[39,40,41,42,43,44,45],"Sepsis","Critical Illness","Immunosuppression","MODS","Mitochondrial Diseases","Dysbiosis","γδ T Cells","NOT_YET_RECRUITING","2026-07-01",{"date":49,"type":50},"2026-07-02","ACTUAL",{"date":52,"type":35},"2026-07-15",{"date":54,"type":35},"2027-07-15",{"name":5,"class":6}]