HS-10382 is a small molecular, oral potent, allosteric inhibitor. By binding a myristoyl site of the BCR-ABL1 protein, HS-10382 locks BCR-ABL1 into an inactive conformation. Flumatinib is the first approved second generation TKI in China and a derivative of imatinib. The primary objective of this study is to evaluation the safety and tolerability and of HS-10382 combination therapy in patients with chronic myeloid leukemia (CML). The secondary objectives is to evaluate the PK profile, major metabolites and efficacy of HS-10382 in CML-CP/AP subjects after combination therapy, and to explore the kinase domain mutations associated with TKI resistance
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
100
Drug:HS-10382+Flumatinib HS-10382 is administered orally BID Drug:Flumatinib Flumatinib 400mg once daily
Maximum tolerated dose (MTD) for HS-10382 combined treatment
MTD was defined as the previous dose level at which 2 out of 3 subjects or 2 out of 6 subjects experienced a DLT
Time frame: Up to day 28 from the first dose
Incidence and severity of treatment-emergent adverse events
Assessed by number and severity of adverse events as recorded on the case report form, vital signs, laboratory variables, physical examination, electrocardiogram, and NCI CTCAE v5.0
Time frame: Cycle 1 day 1 up to 28 days after the last dose
maximum plasma concentration of HS-10382 or Flumatinib(and its major metabolite ) after HS-10382 combination therapy
Cmax is the maximum observed concentration.
Time frame: Cycle 1 day 1 up to 28 days after the last dose
Time to reach maximum plasma concentration of HS-10382 or Flumatinib(and its major metabolite) after HS-10382 combination therapy
Tmax is defined as time to reach maximum observed plasma concentration
Time frame: Cycle 1 day 1 up to 28 days after the last dose
half-life (T1/2) of HS-10382 combination therapy
half-life is the time measured for the concentration to decrease by one half
Time frame: Cycle 1 day 1 up to 28 days after the last dose
Area under the curve (AUC) of HS-10382 combination therapy
The AUC is defined as the area under the plasma concentration-time curve
Time frame: Cycle 1 day 1 up to 28 days after the last dose
Hematologic Response of combination therapy with HS-10382
To record and analyse the hematologic response of subjects. Hematologic response will be assessed by complete blood count (CBC) and physical examination at each visit.
Time frame: up to 24 months
Cytogenetic Response of combination therapy with HS-10382
To record and analyse the cytogenetic response of subjects. Cytogenetic response (CyR) is based on the prevalence of Ph+ cells in metaphase from bone marrow (BM) sample.
Time frame: up to 24 months
Molecular Response of combination therapy with HS-10382
To record and analyse the molecular response of subjects. Molecular response will be assessed by BCR-ABL1 transcript level as measured by RQ-PCR.
Time frame: up to 24 months
Event-free survival (EFS)
EFS is defined as the time from the date of first dose to the earliest occurrence of the following events: death due to any cause ; loss of CHR ,loss of PCyR ;loss of CCyR ; discontinuation of study treatment due to AE or treatment failure ; progression to AP/BC .
Time frame: up to 24 months
Progression-free survival (PFS)
PFS is defined as the time from the date of first dose to the earliest occurrence of progression to AP/BC or death from any cause.
Time frame: From the first dose to disease progression or withdrawal from study, whichever came first,up to 24 months
Overall survival (OS)
OS is defined as the time from the date of first dose to the date of death from any cause.
Time frame: From the first dose up to death or withdrawal from study, whichever came first, up to 24 months
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