A Clinical Trial to Evaluate the Efficacy, Safety, and Pharmacokinetics of TQ05105 Tablets in Subjects With Intermediate/High-risk Myelofibrosis
A Phase II, Single-arm, Open-label, Multicenter Clinical Trial to Evaluate the Efficacy, Safety, and Pharmacokinetics of TQ05105 Tablets in Subjects With Intermediate/High-risk Myelofibrosis
Chia Tai Tianqing Pharmaceutical Group Co., Ltd.
51 participants
Jun 18, 2026
INTERVENTIONAL
Conditions
Summary
This is an open-label, single-arm, multi-center phase II study consisting of two cohorts. Cohort 1 evaluates the pharmacokinetics (PK) of TQ05105 in myelofibrosis participants with normal, mild, or moderate renal impairment to guide dosing. Cohort 2 evaluates the efficacy and safety of TQ05105 in participants with intermediate/high-risk myelofibrosis who are refractory, relapsed, or intolerant to prior Janus kinase (JAK) inhibitor therapy.
Eligibility
Inclusion Criteria10
- Voluntary and signed informed consent, good compliance.
- Age ≥18 years (at time of signing informed consent); Eastern Cooperative Oncology Group performance status (ECOG PS) 0-2; life expectancy ≥24 weeks.
- Diagnosis of primary myelofibrosis (PMF) per World Health Organization (WHO) 2016, or post-polycythemia vera myelofibrosis (post-PV-MF) or post-essential thrombocythemia myelofibrosis (post-ET-MF) per International Working Group for Myelofibrosis Research and Treatment (IWG-MRT) criteria; Janus kinase 2 (JAK2) mutation status not restricted.
- Intermediate or high risk per Dynamic International Prognostic Scoring System (DIPSS).
- Cohort 1: Renal function classified as normal, mild impairment, or moderate impairment. Cohort 2: Prior Janus kinase (JAK) inhibitor therapy with refractory, relapsed, or intolerant.
- Spleen enlargement (except Cohort 1).
- Peripheral blood and bone marrow blasts ≤10%.
- No growth factors, colony-stimulating factors, thrombopoietin, or platelet transfusion within 2 weeks before first dose; and routine blood parameters meet requirements within 7 days before first dose.
- Adequate major organ function within 7 days before first dose per protocol (renal function not restricted for Cohort 1).
- Agreement to use effective contraception during the study and for 6 months after; negative pregnancy test for females of childbearing potential; non-lactating.
Exclusion Criteria26
- Prior allogeneic stem cell transplantation, or autologous stem cell transplantation within 3 months before first dose, or planned stem cell transplantation.
- Prior treatment with 2 or more Janus kinase (JAK) inhibitors (except Cohort 1).
- Prior splenectomy or splenic radiotherapy within 6 months before first dose.
- Other malignancies within 3 years before first dose or currently present (exceptions per protocol).
- Factors affecting oral drug absorption.
- Non-hematologic toxicity from prior therapy not recovered to ≤ grade 1 (excluding hypertension and alopecia).
- Major surgery or significant traumatic injury within 4 weeks before first dose.
- Congenital bleeding or coagulation disorders.
- Arterial/venous thrombosis event within 6 months before first dose.
- History of substance abuse or mental disorder.
- Active or uncontrolled severe infection.
- Active hepatitis B virus (HBV) or hepatitis C virus (HCV) infection.
- Grade ≥2 myocardial ischemia or infarction, arrhythmia, QT prolongation, or grade ≥2 congestive heart failure.
- Uncontrolled hypertension despite standard therapy.
- Renal failure requiring hemodialysis or peritoneal dialysis.
- Newly diagnosed pulmonary interstitial fibrosis or drug-related interstitial lung disease within 3 months before first dose.
- History of immunodeficiency or organ transplantation.
- Epilepsy requiring treatment.
- Use of protocol-prohibited myelofibrosis (MF) medications, immunomodulators, or immunosuppressants within specified time before first dose.
- Use of Chinese patent medicines with anti-tumor indications approved by National Medical Products Administration (NMPA) within 2 weeks before first dose.
- Uncontrolled pleural effusion, pericardial effusion, or ascites.
- Live attenuated vaccine within 4 weeks before first dose or planned during the study.
- Known hypersensitivity to study drug or excipients.
- Diagnosis of active autoimmune disease within 2 years before first dose.
- Participation in another interventional clinical trial with investigational drug within 4 weeks before first dose.
- Any condition that, in the investigator's judgment, seriously endangers subject safety or interferes with study completion.
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Interventions
TQ05105 is an inhibitor of Janus kinase 1 (JAK1), Janus kinase 2 (JAK2), and Rho-associated coiled-coil containing protein kinase 1 (ROCK1) and 2 (ROCK2).
Locations(24)
View Full Details on ClinicalTrials.gov
For the most up-to-date information, visit the official listing.
NCT07551427