The Gut Microbiome in FLT3- AL Undergoing Allo-HSCT With Or Without Sorafenib Maintenance

Sponsor
Nanfang Hospital of Southern Medical University (Other)
Overall Status
Recruiting
CT.gov ID
NCT05601895
Collaborator
(none)
60
1
27
2.2

Study Details

Study Description

Brief Summary

This prospective trial investigates the effect of sorafenib maintenance therapy in FLT3 negative acute leukemia patients after allo-HSCT in terms of gut microbiome.

Condition or Disease Intervention/Treatment Phase

Detailed Description

Acute leukemia is a heterogeneous group of clonal diseases. Leukemia relapse remains the main cause of treatment failure, including the patients undergoing allogeneic hematopoietic stem cell transplantation (allo-HSCT). Sorafenib, an inhibitor of multiple kinases including FLT3, has shown promising activity in FLT3-ITD-positive AML. The investigator's previous studies demonstrated that sorafenib maintenance post-transplantation could improve the outcomes of FLT3-ITD positive AML patients, which was associated with sorafenib enhancing the graft-versus-leukemia (GVL) effect. Recent studies have shown that sorafenib is also effective in patients with FLT3-negative acute leukemia. The investigator's previous exploratory study found that salvage therapy such as sorafenib combined with chemotherapy and donor lymphocyte infusion could significantly improve the CR rate and survival in patients with recurrent FLT3-negative acute leukemia after allo-HSC. More and more studies have shown that sorafenib and allo-HSCT have synergistic GVL effect. Some studies have demonstrated that gut microbiome is associated with graft-versus-host-disease (GVHD) and GVL. However, the exact mechanism of sorafenib enhancing the GVL effect and the influence of gut microbiome on sorafenib maintenance after allo-HSCT in FLT3 negative acute leukemia patients remain unknown.

Study Design

Study Type:
Observational
Anticipated Enrollment :
60 participants
Observational Model:
Cohort
Time Perspective:
Prospective
Official Title:
The Gut Microbiome Changes in FMS-like Tyrosine Kinase 3 (FLT3) Negative Acute Leukemia (AL) Patients Undergoing Allogeneic Hematopoietic Stem Cell Transplantation (Allo-HSCT) With or Without Sorafenib Maintenance Post-transplantation
Actual Study Start Date :
Oct 1, 2022
Anticipated Primary Completion Date :
Dec 31, 2023
Anticipated Study Completion Date :
Dec 31, 2024

Arms and Interventions

Arm Intervention/Treatment
sorafenib group

FLT3- acute leukemia patients who receive sorafenib maintenance therapy after allo-HSCT. Sorafenib will be used from day 30 to 180 post-transplantation. The initial dose of sorafenib is 400 mg orally twice daily and is adjusted in case of suspected toxicity or resistance (dose range, 200-800 mg daily).

Drug: Sorafenib
The initial dose of sorafenib is 400 mg orally twice daily and is adjusted in case of suspected toxicity or resistance (dose range, 200-800 mg daily).
Other Names:
  • Nexavar
  • BAY 43-9006
  • BAY-673472
  • BAY 545-9085
  • non-sorafenib group

    FLT3- acute leukemia patients who do not receive sorafenib maintenance therapy after allo-HSCT.

    Outcome Measures

    Primary Outcome Measures

    1. Variation of Gut Microbiota Composition and Diversity [3 months]

      Variation of gut microbiota composition and diversity, as determined by 16sV3V4 rRNA sequencing of serial stool samples, during Sorafenib maintenance therapy and the period without Sorafenib maintenance.

    Secondary Outcome Measures

    1. Variation of gut barrier integrity [3 months]

      As determined by serum levels of zonulin, I-FABP, and citrulline or other potential candidates.

    2. NRM [1 year]

      Non-relapse mortality

    3. Acute GVHD [100 days]

      The cumulative incidence of overall grades II-IV and grades III-IV acute GVHD will be assessed through six months after transplantation. Acute GVHD will be assessed using the Mount Sinai Acute GVHD International Consortium (MAGIC) criteria.

    4. Chronic GVHD [1 year]

      The cumulative incidence of overall grades of chronic GVHD will be assessed through 1 year after transplantation according to the 2014 NIH Consensus.

    5. AEs [1 year]

      Adverse Events

    6. OS [1 year]

      Overall Survival

    7. LFS [1 year]

      Leukemia-Free Survival

    8. Relapse [1 year]

      Cumulative incidence of relapse

    Eligibility Criteria

    Criteria

    Ages Eligible for Study:
    18 Years to 65 Years
    Sexes Eligible for Study:
    All
    Accepts Healthy Volunteers:
    No
    Inclusion Criteria:
    • FLT3 Negative Acute Leukemia

    • Allo-HSCT Recipients

    Exclusion Criteria:
    • intolerance to sorafenib pretransplantation

    • cardiac dysfunction (particularly congestive heart failure)

    • hepatic abnormalities (bilirubin ≥ 3 mg/dL, aminotransferase> 2 times the upper limit of normal)

    • renal dysfunction (creatinine clearance rate < 30 mL/min)

    • Any abnormality in a vital sign (e.g., heart rate, respiratory rate, or blood pressure)

    • Patients with any conditions not suitable for the trial (according to the investigators' decision)

    Contacts and Locations

    Locations

    Site City State Country Postal Code
    1 Department of Hematology,Nanfang Hospital, Southern Medical University Guangzhou Guangdong China 510515

    Sponsors and Collaborators

    • Nanfang Hospital of Southern Medical University

    Investigators

    • Principal Investigator: Li Xuan, MD, Nanfang Hospital of Southern Medical University

    Study Documents (Full-Text)

    None provided.

    More Information

    Publications

    Responsible Party:
    Qifa Liu, professor, Nanfang Hospital of Southern Medical University
    ClinicalTrials.gov Identifier:
    NCT05601895
    Other Study ID Numbers:
    • Microbiota-Sora-FLT3-AL-2022
    First Posted:
    Nov 1, 2022
    Last Update Posted:
    Nov 1, 2022
    Last Verified:
    Oct 1, 2022
    Studies a U.S. FDA-regulated Drug Product:
    No
    Studies a U.S. FDA-regulated Device Product:
    No
    Keywords provided by Qifa Liu, professor, Nanfang Hospital of Southern Medical University
    Additional relevant MeSH terms:

    Study Results

    No Results Posted as of Nov 1, 2022