Clinical trial Recruiting at 1 site Phase 1 Interventional Ages 18 and up

Zeprumetostat in relapsed/refractory T-cell large granular lymphocytic leukemia

Official title: A Prospective and Exploratory Clinical Study on the Efficacy and Safety of Zeprumetostat in Relapsed/Refractory Large Granular Lymphocyte Leukemia

Run by Institute of Hematology & Blood Diseases Hospital, China · NCT07692529 · Data updated 2026-11-12

This study tests whether taking Zeprumetostat by mouth can help people with relapsed or hard-to-treat T-cell large granular lymphocytic leukemia.

Quick facts

PhasePhase 1
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment10 (estimated)
SponsorInstitute of Hematology & Blood Diseases Hospital, China
Academic / other
Drugs / interventionsradiation
Locations1 site (Tianjin, Tianjin Municipality)
StatusRecruiting
StartedOctober 1, 2026
Main results expectedDecember 31, 2027
Study endsFebruary 26, 2028
Registry record updatedNovember 4, 2026
Trial IDNCT07692529 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults (≥18) with diagnosed T-cell large granular lymphocytic leukemia who have relapsed or failed prior therapy and meet specific hematologic or clinical criteria.

Probably not a fit

Patients who do not exhibit a favorable safety/tolerability profile or lack of any clinical response after two cycles may not benefit.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This is a small, early-phase, single-arm trial enrolling up to 10 adults with relapsed or refractory T-LGLL to receive Zeprumetostat 350 mg twice daily for 28 days per cycle, with a maximum of two cycles to assess safety and preliminary efficacy. A 4-week screening period precedes treatment, and adverse events are managed by predefined suspension/resumption rules. Efficacy and safety will be evaluated after completion of two cycles. Primary goals focus on safety and tolerability in addition to any signs of clinical benefit.

Why it matters

Potential benefit: If successful, Zeprumetostat could offer a new treatment option for patients with relapsed/refractory T-LGLL.

How similar studies have gone: Early-phase studies in similar targeted-therapy approaches have shown signals of safety and potential efficacy in related lymphoproliferative conditions, but this exact approach is exploratory.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:Male or female age ≥ 18 years Diagnosis of T-cell large granular lymphocytic leukemia (T-LGLL) Meet any of the following indications for treatment:

1. Hemoglobin \< 100g/L or RBC transfusion dependence
2. Neutrophil count \<0.5×10\^9/L or neutrophil count decreased with recurrent infection
3. Progressive splenomegaly and/or Massive Splenomegaly
4. Combined with autoimmune diseases requiring treatment, such as rheumatoid arthritis, autoimmune thyroiditis, etc.
5. Severe B symptoms Failure or intolerance to a first-line therapy ECOG performance status ≤2 Expected survival ≥ 6 months Willing and able to comply with the requirements for this study and written informed consent.

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   Exclusion Criteria:History of other lymphoproliferative neoplasms Had malignant tumor within 5 years before enrollment, exclusive of cured basal or squamous cell skin cancer, superficial bladder cancer, prostate intraepithelial tumor, cervical carcinoma in situ or other indolent tumors Previously received organ or stem cell transplantation. Patients with active infection within 2 weeks before giving the first dose of medication Patients with HBV, HCV, HIV or other infections that require treatment History of immunodeficiency, or congenital immunodeficiency disorders Any severe and/or uncontrolled medical conditions or other conditions that could affect their participation in the study, including clinically significant cardiac diseases, refractory hypertension, metabolic disorders and other diseases that seriously affect the function of the gastrointestinal tract within the 6 months prior to enrollment.

   Abnormal liver function: two consecutive examinations with an interval of ≥1 week suggest that ALT and AST are 2.5 times higher than the upper limit of normal values Renal impairment: creatinine clearance \<60ml/min Having a history of mental illness or suffering from severe cerebrovascular diseases or cognitive sequelae History of pulmonary fibrosis, interstitial pneumonia, pneumoconiosis, radiation pneumonitis, drug-related pneumonia, severe impairment of lung function, etc.

   Difficulty in swallowing, chronic diarrhea and intestinal obstruction, there are multiple factors that affect the administration and absorption of medications.

   Received attenuated vaccine 4 in weeks before enrollment Participation in another clinical trial within 4 weeks before the start of this trial Have an allergy to zeprumetostat or any other part of this medicine. Previously treated with other EZH2 inhibitor. Pregnant or breast-feeding patients Patients considered to be ineligible for the study by the investigator for reasons other than the above

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Where it's running

  • Institute of Hematology & Blood Diseases Hosptial, Chinese Academy of Medical Science and Peking Union Medical School
    Tianjin, Tianjin Municipality, China
    Recruiting

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.