A multi-center, open-label, randomized, phase Ib study to evaluate the pharmacokinetics (PK) of HQP1351 and to determine the recommended phase 2 dose (RP2D) of HQP1351 in subjects with CML chronic phase (CP), accelerated phase (AP), or blast phase (BP) or with Ph+ ALL, who have experienced resistance or intolerance to at least two tyrosine kinase inhibitors (TKIs) or in subjects with Ph+ B-cell precursor (BCP) ALL or lymphoid blast phase CML (CML LBP), who have experienced resistance or intolerance to at least one second or later generation TKI.
For HQP1351 monotherapy, patients must have CML in any phase (CP, AP, or BP of any phenotype) or Ph+ ALL, with or without T315I mutation
For Cohort D, patients with Ph+ BCP ALL or CML LBP must be resistant or intolerant to at least one second or later generation TKI, such as dasatinib, nilotinib, bosutinib and ponatinib, despite optimal supportive care
For HQP1351 monotherapy only: Be previously treated with and developed resistance or intolerance to at least two TKIs including ponatinib, imatinib, dasatinib, nilotinib, bosutinib, and asciminib. For patients with a T315I mutation, number of pretreated TKIs is not restricted.
Three months after the initiation of therapy: non-complete hematologic response (CHR) and/or Ph+ >95%
Received TKI therapy within 5 half-lives or 7 days prior to first dose of HQP1351, whichever is shorter, or any adverse events (AEs) (except alopecia and pigmentation) not recovered to CTCAE v5.0 grade 0-1 due to any other treatments
For CP and AP patients, received hydroxyurea or anagrelide within 24 hours prior to the first dose of HQP1351; or, interferon, immunotherapy or cytarabine within 14 days prior to the first dose of HQP1351; or, any other radiotherapy, cytotoxic chemotherapy or investigational therapy within 28 days prior to receiving the first dose of HQP1351
For BP patients, received chemotherapy within 7 days prior to the first dose of HQP1351
For Ph+ ALL patients, received corticosteroids within 24 hours before the first dose of HQP1351, or received chemotherapy within 7 days prior to the first dose of HQP1351