Withdrawn due to duplicate registration
A Phase I Study Evaluating the Safety, Tolerability, and Pharmacokinetic and Pharmacodynamic Dose-escalation of Flonoltinib Maleate Tablets in Patients With Bone Marrow Proliferative Tumors
Sponsor study identifier
interventional
0
0 countries
N/A
Study Start
November 12, 2021
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
Primary Completion
December 29, 2022
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
Study Completion
February 28, 2023
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
Flonoltinib Maleate (FM) targets Janus kinase 2 (JAK2) and FMS-like tyrosine kinase 3 (FLT3). FM is a dual target inhibitor of JAK2/FLT3.FM has the activity of inhibiting JAK2 signaling pathway, and pharmacodynamics evaluation also confirmed that FM has a good therapeutic effect on the primary splenomegaly model of mice induced by JAK2V617 mutation.Therefore, FM has the potential to treat bone marrow proliferative tumors.The drug is intended to be used in patients with MPN, mainly including medium-risk or high-risk myelofibrosis (FM) (including primary myelofibrosis (PMF), post-polycythemia vera myelofibrosis (PostPV-MF) and post-primary thrombocythemia myelofibrosis (postET-MF)), Polycythemia vera (PV) and essential thrombocythemia (ET) were the primary causes of thrombocythemia and thrombocythemia. FM has high inhibitory activity against JAK family and FLT3 kinase, suggesting that FM may have a certain therapeutic effect on AML disease.The IC50 of JAK2 kinase inhibition by FM was as low as 0.8 nM, while the IC50 of JAK1, JAK3 and Tyk2 kinase inhibition was 690 nM, 557 nM and 65nM, respectively. The selectivity of JAK2 kinase inhibition by FM was 862.5, 696.3 and 81.3 times, respectively. Therefore, FM showed highly selective inhibition of JAK2 kinase.The IC50 for FLT3 kinase was 15 nM. FM has better inhibitory activity against JAK2 kinase than the listed Ruxolitinib and Fedratinib, and has better selectivity against JAK family.In order to determine whether FM has targets other than JAK2 and Flt3 kinases, we tested FM's inhibitory activity against 100 human kinases that are highly associated with tumors, including some common drug-resistant mutant kinases.The results showed that, except for CDK4/6, LCK and LN, FM had no obvious inhibitory activity against the screened kinases at 0.1 μm, and no other targets were found. In vitro experiments on the proliferation of JAK2-dependent and Flt3-related tumor cell lines with FM showed that the tumor cell lines had a significant inhibitory effect. The IC50 of half of the tumor cell lines was less than 0.5 μm, which was better than or equal to the similar drugs Ruxolitinib and Fedratinib. The effect of FM on tumor cells from MPN patients indicated that FM has the potential to treat MPN disease. In multiple animal models of bone marrow proliferative tumors with JAK2V617F mutations, FM showed superior efficacy and low toxicity (no obvious VISCAL toxicity) than existing drugs on the market, and the tumor inhibition effect of FM showed a good dose-dependent relationship. Objectives of Study Main Purpose:
Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.
February 28, 2023
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
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Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.
August 12, 2021
Actual (reported)November 10, 2021
Actual (reported)November 12, 2021
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
December 29, 2022
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
February 28, 2023
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
Flonoltinib Maleate Pharmacokinetics (PK):Cmax
Estimation of maximum observed plasma concentration
72hours
Flonoltinib Maleate Pharmacokinetics (PK):Tmax
Estimation of time to reach Cmax
72hours
Flonoltinib Maleate Pharmacokinetics (PK):AUC0-72h
Estimation of AUC from time zero to the last measured time point
72hours
Flonoltinib Maleate Pharmacokinetics (PK):AUC0-∞
Estimation of AUC from time zero extrapolated to infinity Estimation of AUC from time zero extrapolated to infinity Estimation of AUC from time zero extrapolated to infinity Estimation of AUC from time zero extrapolated to infinity Estimation of AUC from time zero extrapolated to infinity Estimation of AUC from time zero extrapolated to infinity
72hours
Flonoltinib Maleate Pharmacokinetics (PK):MRT
Estimation of mean residence time
72hours
1 case,The starting dose,Take the medicine once on D1 ,D 5 through 21.
6 case,Increasing dose,Take the medicine once on D1 ,D 5 through 21.
6 case,Increasing dose,Take the medicine once on D1 ,D 5 through 21.
1 case,The starting dose,Take the medicine once on D1,D 5-21.
6 case,Increasing dose,Take the medicine once on D1,D5 -21.
Lijuan Chen, doctor
West China Hospital
0 participants (actual enrollment reported by the registry).
First Submitted
August 12, 2021
First Posted
November 10, 2021
Study Start
November 12, 2021
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
Flonoltinib Maleate Pharmacokinetics (PK):Vd
Estimation of apparent volume of distribution Apparent volume of distribution Apparent volume of distribution
72hours
Flonoltinib Maleate Pharmacokinetics (PK):t1/2
Estimation of terminal elimination half-life
72hours
Flonoltinib Maleate Pharmacokinetics (PK):CLz/F
Estimation of clearance when dosed orally
72hours
Flonoltinib Maleate Pharmacokinetics (PK):Vz/F
Estimation of apparent volume of distribution when dosed orally
72hours
Flonoltinib Maleate Pharmacokinetics (PK):Ke
Estimation of the elimination rate constant of a drug in the body
72hours
6 case,Increasing dose,Take the medicine once on D1 ,D 5 through 21.
6 case,Increasing dose,Take the medicine once on D1 ,D 5 through 21.
6 case,Increasing dose,Take the medicine once on D1 ,D 5 through 21.
6 case,Increasing dose,Take the medicine once on D1,D5 -21.
6 case,Increasing dose,Take the medicine once on D1,D5 -21.
6 case,Increasing dose,Take the medicine once on D1,D5 -21.
6 case,Increasing dose,Take the medicine once on D1,D5 -21.
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Primary Completion
December 29, 2022
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
Study Completion
February 28, 2023
Estimated (date passed)This estimate has passed. The registry has not confirmed an actual date for this milestone.
Last Updated
August 13, 2026
Record last verified: 2021-11
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