Clinical trials

16,589

Search and review clinical trials. Use filters to narrow results by trial status, phase, treatment, biological sex and sponsor.

Condition / disease
Location
Status: Recruiting

Transoral Nasal Cannula Oxygen Therapy for Mouth-Breathing Patients in the Postanesthesia Care Unit

Postoperative hypoxemia is a common complication in the postanesthesia care unit (PACU). Patients who breathe through the mouth after tracheal extubation may receive limited benefit from standard nasal cannula oxygen therapy, because the nasal cavity functions as an ineffective dead space during mouth breathing. Clinical observations suggest that placing the prongs of a nasal cannula inside the mouth (transoral oxygen delivery) rapidly improves oxygenation in these patients. However, no randomized controlled trial has formally verified this effect. This single-center, randomized, controlled, crossover trial will enroll 64 adult patients identified as persistent mouth breathers after extubation in the PACU following elective thoracic or abdominal surgery under general anesthesia. Each participant will receive, in a randomized sequence, both standard nasal cannula oxygen delivery (4 L/min for 10 minutes) and transoral nasal cannula oxygen delivery (4 L/min for 10 minutes), separated by a 5-minute washout period, so that each participant serves as his or her own control. The primary outcome is the incidence of hypoxemia (peripheral oxygen saturation \[SpO2\] \<90% sustained for at least 10 seconds, or oxygenation index \[PaO2/FiO2 ratio\] \<300 mmHg) during each oxygen delivery period. Secondary outcomes include the incidence of SpO2 \<92%, time to achieve SpO2 \>=95%, oxygenation index measured by arterial blood gas analysis, need for escalation of oxygen therapy, vital signs, patient comfort and adverse effects, PACU length of stay, and respiratory complications within 24 hours after surgery. The results are expected to provide high-level evidence for optimizing oxygen therapy strategies for mouth-breathing patients in the PACU.

Participants needed: 64
Trial details
Age: 18+Biological sex: AllType: InterventionalSponsor: Nanjing First Hospital, Nanjing Medical UniversityUpdated: Oct 9, 2026Locations: 1
Eligibility criteria

Aged older than 18 years; [+5]

Preoperative diagnosis of severe obstructive sleep apnea-hypopnea syndrome (apne... [+3]

Status: Recruiting

A Study to Learn About the Safety and Immune Responses of RSVpreF in Older Adults

The purpose of this study is to learn about the safety, tolerability, and immune response of the RSVpreF vaccine in healthy older adults. Participants will take part in this study for about 6 months. The study will include people in China and the United States. In China, participants will receive either RSVpreF or placebo. A placebo is a dummy vaccine with no active ingredient, but it looks just like the vaccine being studied. In the United States, all participants will receive RSVpreF. Researchers will check for any reactions. They will also check blood test results to learn how the body responds to the vaccine. The main questions the study aims to answer are: * What local reactions and systemic events (body-wide symptoms) do participants have after a RSVpreF vaccination? * What medical problems do participants have after a RSVpreF vaccination? * Researchers will compare antibody levels from blood tests between the China cohort and the US cohort. An antibody is a substance in the body that try to fight off an infection or foreign substance. Participants will: * Have a screening visit to make sure they qualify for the study (participants in China will have this visit before the day of vaccination) * Receive the RSVpreF vaccination (or a placebo injection if in the China cohort) once at Visit 1. * Have a telephone or clinic visit 1 week later to assess local reactions and systemic events. * Have a clinic visit a month after vaccination for a checkup and tests. * Have a telephone or clinic visit 6 months after vaccination for a health check. * Have a blood test at screening (if in the China cohort only), on the day of vaccination and 1 month after vaccination.

Participants needed: 600
Trial details
Phase: Phase 3Age: 60+Biological sex: AllType: InterventionalSponsor: PfizerUpdated: Oct 9, 2026Locations: 15
Eligibility criteria

Participants 60 years of age or older at enrolment. [+3]

Confirmed RSV infection 180 days or less before study vaccination. [+5]

Status: Recruiting

A Extension Study to Evaluate the Safety and Efficacy of HRS-7249 in Patients With Hypertriglyceridemia

This is a Phase II multi-center, open-label extension (OLE) clinical trial of HRS-7249, a GalNAc-conjugated APOC3-targeted siRNA injection, enrolling two cohorts of participants. Cohort 1 includes subjects who completed parent study HRS-7249-201 within 24 weeks; Cohort 2 newly recruited patients with fasting triglyceride (TG) ≥2.3 mmol/L aged 18-79 years. All participants receive subcutaneous HRS-7249 for a 48-week treatment period followed by a 24-week safety follow-up phase, with two dosing regimens. The primary objective is to assess long-term safety and tolerability of repeated HRS-7249 administration. Secondary objectives include evaluating sustained lipid-lowering effects on TG, APOC3 and other lipid profiles, impacts on glycometabolism, incidence of acute pancreatitis and major adverse cardiovascular events (MACE), long-term pharmacokinetic/pharmacodynamic (PK/PD) profiles, and anti-drug antibody (ADA) dynamics. All safety assessments including vital signs, physical examinations, laboratory tests, 12-lead ECG, injection site reactions and adverse events will be collected throughout the study. Lipid parameters, HbA1c, pancreatitis and cardiovascular events will be monitored to characterize the clinical benefit-risk profile of long-term HRS-7249 therapy in hypertriglyceridemia patients. A total of at least 400 subjects will be enrolled nationwide in China.

Participants needed: 400
Trial details
Phase: Phase 2Age: 18-79Biological sex: AllType: InterventionalSponsor: Fujian Shengdi Pharmaceutical Co., Ltd.Updated: Oct 9, 2026Locations: 2
Eligibility criteria

Able to understand trial procedures, voluntarily participate and provide written... [+2]

Permanently discontinued parent study treatment due to treatment-related adverse... [+9]

Status: Recruiting

A Study of 24 to 52 Weeks Treatment to Evaluate The Efficacy And Safety of Galvokimig in Study Participants With Moderate-to-Severe Chronic Obstructive Pulmonary Disease (COPD) With Chronic Bronchitis

The purpose of the study is to investigate the efficacy of galvokimig versus placebo in the time to the first acute exacerbation of chronic obstructive pulmonary disease (AECOPD) in study participants with moderate-to-severe COPD with chronic bronchitis.

Participants needed: 402
Trial details
Phase: Phase 2Age: 40-80Biological sex: AllType: InterventionalSponsor: UCB Biopharma SRLUpdated: Oct 9, 2026Locations: 13
Eligibility criteria

Participant must be aged ≥40 to ≤80 years of age, inclusive, at the time of sign... [+9]

Participant has any history or presence of any medical or psychiatric condition,... [+11]

Status: Recruiting

Label-free Femtosecond Laser Imaging Combined With the Fast Lung Artificial Intelligence Model for Rapid Intraoperative Diagnosis of Lung Surgical Specimens: A Multicentre, Prospective, Parallel-workflow, Non-inferiority Study.

This study aims to evaluate whether femtosecond laser imaging combined with FastLung AI model can provide intraoperative diagnostic performance that is non-inferior to standard frozen section diagnosis for pulmonary nodules or suspected pulmonary tumor lesions. Patients scheduled for lung surgery and requiring intraoperative pathological assessment will be prospectively enrolled. After tumor excision, the fresh tumor specimen will be bisected through the central plane. One half will be used for standard frozen section diagnosis, and the mirrored counterpart will be used for femtosecond laser imaging. Both diagnostic results will be compared with the final paraffin-embedded pathological diagnosis as the reference standard. The results of femtosecond laser imaging will not guide intraoperative clinical decision-making.

Participants needed: 294
Trial details
Age: 18-90Biological sex: AllType: ObservationalSponsor: Shanghai Chest HospitalUpdated: Oct 9, 2026Locations: 5Duration: 30 Days
Eligibility criteria

Preoperative imaging suggests a pulmonary nodule, pulmonary space-occupying lesi... [+6]

The intraoperative specimen is insufficient and cannot simultaneously meet the r... [+5]

Status: Recruiting

A Clinical Trial of Calderasib (MK-1084) and Durvalumab in People With Non-Small Cell Lung Cancer (MK-1084-015/KANDLELIT-015)

Researchers are looking for new ways to treat locally advanced non-small cell lung cancer (NSCLC) that is unresected and has a gene mutation called KRAS G12C. Researchers want to learn if calderasib (MK-1084) can be given with durvalumab, an immunotherapy, to treat NSCLC after chemotherapy and radiation therapy. The goal of this trial is to learn if participants who receive calderasib and durvalumab live longer without the cancer growing or spreading compared to participants who receive placebo and durvalumab.

Participants needed: 310
Trial details
Phase: Phase 3Age: 18+Biological sex: AllType: InterventionalSponsor: Merck Sharp & Dohme LLCUpdated: Oct 9, 2026Locations: 95
Eligibility criteria

Has a histological or cytological diagnosis of locally advanced, unresected Stag... [+7]

Has a diagnosis of small cell lung cancer or mixed tumors with small cell elemen... [+11]

Status: Recruiting

A Study to Evaluate the Efficacy and Safety of Rozanolixizumab in Adult Participants With Ocular Myasthenia Gravis

The purpose of the study is to demonstrate the efficacy, safety and tolerability of rozanolixizumab compared with placebo in the treatment of adult study participants with Ocular Myasthenia Gravis.

Participants needed: 120
Trial details
Phase: Phase 3Age: 18+Biological sex: AllType: InterventionalSponsor: UCB Biopharma SRLUpdated: Oct 9, 2026Locations: 15
Eligibility criteria

Participant must be a minimum of 18 years of age inclusive at the time of signin... [+11]

Participant has any clinically significant medical or psychiatric condition (inc... [+7]

Status: Recruiting

A Solid Tumor Study for Long Term Treatment of Cancer Patients Who Participated in Adagrasib Studies

This is an open-label, solid tumor, continuation, rollover trial which enrolls participants from ongoing BMS parent studies that evaluated adagrasib (MRTX849, BMS-986503) either as monotherapy or in combination with other cancer therapies in patients with non-small cell lung cancer (NSCLC), colorectal cancer (CRC) and other advanced solid tumors.

Participants needed: 170
Trial details
Phase: Phase 2Age: 18+Biological sex: AllType: InterventionalSponsor: Mirati Therapeutics Inc.Updated: Oct 9, 2026Locations: 102
Eligibility criteria

Participant is eligible to receive continued study treatment as per the parent s... [+1]

Participant is not eligible for study treatment per the parent study eligibility... [+2]

Status: Recruiting

CHOICE:Decision Factor of EGFR-TKI in Chinese IV NSCLC

This non-interventional, cross-sectional study aims to investigate treatment preferences from a sample of physicians and patients with experience of 1L EGFR-TKI for stage IV NSCLC by administering a survey, which primarily includes a DCE approach.

Participants needed: 590
Trial details
Age: 18+Biological sex: AllType: ObservationalSponsor: AstraZenecaUpdated: Oct 9, 2026Locations: 1
Eligibility criteria

Provide informed consent [+19]

Status: Recruiting

A Phase 3 Study of Pelabresib (DAK539) and Ruxolitinib in Myelofibrosis (MF)

The purpose of this trial is to evaluate whether treatment with pelabresib in combination with ruxolitinib leads to improved clinical outcomes compared to ruxolitinib alone in patients with primary myelofibrosis (PMF), post-polycythemia vera myelofibrosis (PPV-MF), or post-essential thrombocythemia myelofibrosis (PET-MF) who have not previously received Janus kinase (JAK) inhibitor therapy.

Participants needed: 460
Trial details
Phase: Phase 3Age: 18+Biological sex: AllType: InterventionalSponsor: Novartis PharmaceuticalsUpdated: Oct 9, 2026Locations: 125
Eligibility criteria

Participants have diagnosis of primary myelofibrosis (PMF) or post-polycythemia... [+6]

Prior splenectomy at any time or splenic irradiation in the previous 6 months [+5]

Status: Recruiting

Efficacy and Safety of Akkermansia Muciniphila AKM Lab-01 for Overweight and Obesity

This study is designed as a preliminary investigation to evaluate the weight-loss efficacy and safety of AKM Lab-01 in an overweight or obese population. It is an interventional, radomized, double-blind, placebo-controlled clinical trial. Participants who meet the eligibility criteria will be randomly assigned to receive AKM Lab-01 or a matching placebo. The intervention will be administered once daily for 3 months. Baseline metrics, along with blood, urine, and stool samples, will be collected from participants, before and after the AKM Lab-01 intervention. The analysis will focus on changes in body weight, blood lipids, blood glucose, and gut metagenomic profiles (from stool samples). Furthermore, metabolomic analysis of blood and stool samples will be conducted to explore the potential machanisms through which AMK Lab-01 influences body weight.

Participants needed: 200
Trial details
Age: 18-60Biological sex: AllType: InterventionalSponsor: Moon (Guangzhou) Biotechnology Co., Ltd.Updated: Oct 9, 2026Locations: 1
Eligibility criteria

1) Age: 18-60 years old (inclusive); Gender: male or female. [+6]

1) A clear history of neurological or psychiatric disorders (including epilepsy... [+19]

Status: Recruiting

Venetoclax-containing Therapy Combined With Microtransplant for Intermediate-risk and Higher MDS

This study aims to evaluate the safety and efficacy of a Venetoclax and hypomethylating agent-based regimen combined with infusion of HLA-mismatched donor G-CSF mobilized peripheral blood mononuclear cells (GPBMC) in patients with intermediate-risk and higher myelodysplastic syndromes who are ineligible for allogeneic hematopoietic stem cell transplantation.

Participants needed: 40
Trial details
Phase: Phase 2Age: 18+Biological sex: AllType: InterventionalSponsor: Beijing 302 HospitalUpdated: Oct 9, 2026Locations: 1
Eligibility criteria

Age >=18 years, male or female, non-limited by race or ethnicity. [+9]

Uncontrolled infection or hemorrhage. [+7]

Status: Recruiting

A Clinical Study of Gocatamig (MK-6070) and Infinatamab Deruxtecan (MK-2400) in People With Small Cell Lung Cancer (MK-6070-003)

Researchers are looking for new ways to treat extensive-stage small cell lung cancer (ES-SCLC). ES-SCLC is a type of lung cancer that has spread throughout the lung, to the other lung, or to other parts of the body. A standard (usual) treatment for ES-SCLC uses both chemotherapy and immunotherapy. * Chemotherapy is a treatment that works to destroy cancer cells or stop them from growing. * Immunotherapy is a treatment that helps the immune system fight cancer. Gocatamig and I-DXd (short for ifinatamab deruxtecan) are study medicines. Researchers want to know if giving gocatamig and I-DXd together can treat ES-SCLC. Researchers will also look at giving the study medicines with standard treatment. Gocatamig is a T-cell engager therapy. I-DXd is an antibody drug conjugate. * T-cell engager therapy is a certain type of immunotherapy that uses T-cells to find and destroy cancer cells. * A T-cell is a type of white blood cell, which are cells that help the body fight infection. * An antibody drug conjugate (ADC) is a treatment that attaches to a protein on cancer cells and delivers treatment to destroy those cells. The goals of this study are to learn: * About the safety of combining gocatamig and I-DXd and if people tolerate them together * If people who receive gocatamig and I-DXd have ES-SCLC respond, which means the cancer gets smaller or goes away

Participants needed: 170
Trial details
Phase: Phase 1, Phase 2Age: 18+Biological sex: AllType: InterventionalSponsor: Merck Sharp & Dohme LLCUpdated: Oct 9, 2026Locations: 55
Eligibility criteria

Has a histologically or cytologically confirmed diagnosis of extensive-stage sma... [+8]

Has pleural effusion, pericardial effusion, or ascites requiring recurrent drain... [+17]

Status: Recruiting

AZD0486 1L Therapy for Elderly or Unfit Participants With LBCL

The purpose of this study is to measure the efficacy and safety of R-mini-CHOP × 2 followed by AZD0486 compared with R-mini-CHOP × 6 in elderly or unfit participants newly diagnosed with LBCL.

Participants needed: 420
Trial details
Phase: Phase 3Age: 65-130Biological sex: AllType: InterventionalSponsor: AstraZenecaUpdated: Oct 9, 2026Locations: 82
Eligibility criteria

Participants are either 80 years of age or older, OR 65 to 79 years of age or ol... [+13]

Status: Recruiting

An Open-label Dose Escalation and Expansion, Followed by a Phase II Study of Tulmimetostat (DZR123) and JSB462 (Luxdegalutamide) in Patients With Progressive Metastatic Castrate Resistant Prostate Cancer (mCRPC) (TulmiSTAR-01)

This is a two-part, Phase I/II, open-label, global, multicenter study assessing the safety and efficacy of the combination of tulmimetostat (DZR123) and JSB462 (luxdegalutamide) versus standard of care in participants with progressive metastatic castrate resistant prostate cancer (mCRPC).

Participants needed: 188
Trial details
Phase: Phase 1, Phase 2Age: 18+Biological sex: MaleType: InterventionalSponsor: Novartis PharmaceuticalsUpdated: Oct 9, 2026Locations: 35
Eligibility criteria

Participant is an adult man ≥ 18 years of age. [+9]

Previous treatment with any PRC2 inhibitor, including but not limited to EZH2 in... [+6]

Status: Recruiting

Study of Izalontamab Brengitecan (BMS-986507) Versus Platinum-Pemetrexed for EGFR-mutated Non-small Cell Lung Cancer After Failure of EGFR TKI Therapy (IZABRIGHT-Lung01)

A Study of Izalontamab Brengitecan (BMS-986507) versus Platinum-Pemetrexed for EGFR-mutated Non-small Cell Lung Cancer after failure of EGFR TKI Therapy

Participants needed: 500
Trial details
Phase: Phase 2, Phase 3Age: 18+Biological sex: AllType: InterventionalSponsor: Bristol-Myers SquibbUpdated: Oct 9, 2026Locations: 187
Eligibility criteria

Non-squamous NSCLC, not amenable to treatment in curative intent. [+3]

Inadequate organ function and/or bone marrow reserve. [+3]

Status: Recruiting

A Clinical Study to Test if an Investigational Treatment Called BNT326 is Safe and Potentially Beneficial When Used Alone or in Combination With Other Investigational Treatments Such as BNT327, for People With Advanced Malignant Tumors

This study will evaluate the safety, efficacy, optimal dose, and pharmacokinetics (PK) of BNT326 as monotherapy (Part 1) and as combination treatment with immunotherapeutic agents (Part 2) in participants with histologically or cytologically confirmed solid tumors that are advanced (i.e., either metastatic or recurrent tumors with no further definitive treatment possible) and/or have relapsed/progressed after prior therapy.

Participants needed: 1,438
Trial details
Phase: Phase 1, Phase 2Age: 18+Biological sex: AllType: InterventionalSponsor: BioNTech SEUpdated: Oct 9, 2026Locations: 77
Eligibility criteria

Aged ≥18 years at the time of giving informed consent. Local laws will be follow... [+38]

Have a history of intolerance to treatment with a topoisomerase I inhibitor or i... [+16]

Status: Recruiting

Phase 3 Study of Gedatolisib as First-Line Treatment for Patients With HR-Positive, HER2-Negative Advanced Breast Cancer (VIKTORIA-2)

This is a Phase 3, open-label, randomized, clinical trial evaluating the efficacy and safety of gedatolisib and palbociclib plus endocrine therapy for the treatment of patients with locally advanced or metastatic HR+/HER2- advanced breast cancer.

Participants needed: 1,180
Trial details
Phase: Phase 3Age: 18+Biological sex: AllType: InterventionalSponsor: Celcuity IncUpdated: Oct 9, 2026Locations: 239
Eligibility criteria

Histologically or cytologically confirmed diagnosis of metastatic or locally adv... [+11]

Concurrent malignancies other than adequately treated non-melanoma skin cancer.... [+7]

Status: Recruiting

A Study of Pirtobrutinib in Participants With Immune Thrombocytopenia

The purpose of the phase 1 part of this study was to evaluate how well pirtobrutinib is tolerated and what side effects may occur. The phase 2 part of the study will further investigate efficacy and safety of multiple pirtobrutinib dosages versus placebo. The study drug will be administered orally in participants with Primary Immune Thrombocytopenia (ITP). Blood tests will be performed to check how much pirtobrutinib gets into the bloodstream and how long it takes the body to eliminate it. The study will last up to approximately 16 weeks for phase 1 dose-escalation and 28 weeks for phase 2 dose-optimization, excluding screening.

Participants needed: 68
Trial details
Phase: Phase 1, Phase 2Age: 18+Biological sex: AllType: InterventionalSponsor: Eli Lilly and CompanyUpdated: Oct 9, 2026Locations: 43
Eligibility criteria

Have a diagnosis of primary ITP, defined as isolated thrombocytopenia not associ... [+5]

Have a history of any thrombotic or embolic event within 12 months before screen... [+5]

Status: Recruiting

Evaluating the Efficacy and Safety of PT027 Compared With PT007 Administered As Needed in Participants 12 to < 18 Years of Age With Asthma

The purpose of this study is to compare the effect of budesonide/albuterol metered-dose inhaler (BDA MDI) with albuterol sulfate metered-dose inhaler (AS MDI), both administered as needed, on the annualized rate of severe asthma exacerbations in adolescents with a documented clinical diagnosis of asthma and at least one severe exacerbation in the prior year.

Participants needed: 440
Trial details
Phase: Phase 3Age: 12-17Biological sex: AllType: InterventionalSponsor: AstraZenecaUpdated: Oct 9, 2026Locations: 154
Eligibility criteria

Confirmed clinical diagnosis of asthma at least 12 months. [+12]

Life-threatening asthma defined as any history of significant asthma episode(s)... [+12]

Status: Recruiting

Phase IIIb Study of Ribociclib + ET in Early Breast Cancer

The purpose of this open-label, multicenter, phase IIIb, single-arm study is to characterize the efficacy and safety of the combination of ribociclib and standard adjuvant endocrine therapy (ET) on invasive breast cancer-free survival (iBCFS), in a close to clinical practice patient population with HR-positive (HR+), HER2-negative (HER2-), Anatomic Stage Group III, IIB, and a subset of Stage IIA Early Breast Cancer (EBC).

Participants needed: 1,400
Trial details
Phase: Phase 3Age: 18-100Biological sex: AllType: InterventionalSponsor: Novartis PharmaceuticalsUpdated: Oct 9, 2026Locations: 229
Eligibility criteria

Participant is an adult, male or female ≥ 18 years of age at the time of informe... [+13]

Participant with distant metastases of BC beyond regional lymph nodes (Stage IV... [+5]

Status: Recruiting

An Efficacy and Safety Study of Clemizole HCl in Patients With Lennox-Gastaut Syndrome

This is a multicenter, Phase 3, randomized, double-blind, placebo-controlled study designed to evaluate the efficacy and safety of clemizole HCL (EPX-100) as adjunctive therapy in children and adult participants with Lennox-Gastaut syndrome (LGS).

Participants needed: 260
Trial details
Phase: Phase 3Age: 2-55Biological sex: AllType: InterventionalSponsor: EpygenixUpdated: Oct 9, 2026Locations: 71
Eligibility criteria

Males or females, ages ≥2 to ≤55 years, at the time of Screening. [+5]

Known sensitivity, allergy, or previous exposure to clemizole HCl. [+6]

Status: Recruiting

Dabrafenib and/or Trametinib Rollover Study

This study is to provide access for patients who are receiving treatment with dabrafenib and/or trametinib in a Novartis-sponsored Oncology Global Development, Global Medical Affairs or a former GSK-sponsored study who have fulfilled the requirements for the primary objective, and who are judged by the investigator as benefiting from continued treatment in the parent study as judged by the Investigator at the completion of the parent study.

Participants needed: 100
Trial details
Phase: Phase 4Age: 18-100Biological sex: AllType: InterventionalSponsor: Novartis PharmaceuticalsUpdated: Oct 9, 2026Locations: 36
Eligibility criteria

Patient is currently receiving treatment with dabrafenib/trametinib monotherapy... [+1]

Patient has been previously permanently discontinued from study treatment in the... [+2]

Status: Recruiting

The Safety of Simplified Tranexamic Acid Regimen

Trauma causes at least 5.8 million deaths worldwide annually, accounting for 1 in 10 of all global deaths. Uncontrolled bleeding within 24 hours after trauma is the leading cause of death in trauma patients, and about one-third of patients present with trauma-induced coagulopathy on admission. Fatal severe traumatic hemorrhage is the most common preventable factor contributing to death. Tranexamic acid (TXA), a synthetic lysine derivative, competitively inhibits plasminogen activation, preventing fibrin clot breakdown and thereby enhancing hemostasis and reducing blood loss. Randomized controlled trials such as CRASH-2 have confirmed that TXA significantly reduces mortality in patients with severe traumatic bleeding. TXA has therefore become a cornerstone of traumatic hemorrhage treatment, with current international guidelines recommending 1 g intravenous bolus (over \>10 minutes) plus 1 g intravenous maintenance infusion (over 8 hours). However, severe traumatic hemorrhage is typically managed in high-pressure, chaotic battlefield or emergency settings, where this complex, time-sensitive, multi-step divided regimen is difficult to fully execute in real-world practice. The omission rate of the second maintenance infusion is particularly high, reaching up to 67% during prehospital-to-hospital handover. Rowell et al. showed that even with a strict research protocol, completion of the planned 8-hour in-hospital maintenance infusion was only about 70%. Previous pharmacokinetic studies found that without the second maintenance dose, 21% of patients receiving an initial 1 g dose had already failed to achieve effective plasma concentrations at hospital admission (approximately 1.5 hours post-dose). Thus, the inherent difficulty of fully executing the divided regimen may prevent patients from receiving the full benefits of TXA. To address this, a simplified regimen of a single 2 g loading dose without maintenance infusion has been recommended in recent expert consensus statements, especially for prehospital or battlefield settings. However, these recommendations were mainly based on the 2020 Rowell et al. randomized controlled study, whose exploratory analysis suggested potential mortality reduction with the simplified regimen. That study enrolled patients with traumatic brain injury and had limited statistical power, so evidence on the efficacy and safety of the simplified regimen in patients with severe traumatic hemorrhage remains lacking. Based on the pharmacokinetic study by Grassin-Delyle et al., a single 2 g loading dose is hypothesized to maintain effective concentrations during the peak fibrinolytic period (within 3 hours post-injury), while the transient peak plasma concentration remains well below the toxicity threshold of 500 μg/mL. We therefore hypothesize that, in patients with severe traumatic hemorrhage, the simplified TXA regimen is non-inferior to the divided regimen in efficacy, including bleeding control. However, the primary limitation of a large randomized controlled trial to verify this hypothesis is that safety concerns regarding the simplified regimen due to higher transient plasma concentrations compared with the divided regimen have not been clearly resolved. Previous systematic reviews concluded that safety events such as thrombosis and seizures are dose-dependent, and that a total daily dose not exceeding 2 g is safe. Previous pharmacokinetic studies also suggest that the transient peak concentration of the simplified regimen should be well below the toxicity threshold. Although expert consensus has recommended the simplified regimen, suggesting it can be considered safe, studies directly comparing the two regimens are lacking, particularly regarding whether the simplified regimen increases safety risks when the total dose is identical. Before conducting a larger, more definitive efficacy trial, it is also important to evaluate recruitment rates, protocol adherence, accurate sample size estimation, and other potential barriers. For these reasons, we designed this pilot study, primarily to evaluate the safety of the simplified TXA regimen compared with the divided regimen in patients with traumatic hemorrhagic shock, and the feasibility of a subsequent randomized controlled trial.

Participants needed: 60
Trial details
Phase: Phase 4Age: 18-80Biological sex: AllType: InterventionalSponsor: Second Affiliated Hospital, Zhejiang University, School of MedicineUpdated: Oct 9, 2026Locations: 3
Eligibility criteria

Age ≥ 18 years [+4]

Known to be allergic to TXA [+6]