An Open Label Ascending Dose Study Evaluating the Safety/Tolerability, Pharmacokinetic and Pharmacodynamic Effects of KA2507 in Patients With Solid Tumours
Overview
- Phase
- Phase 1
- Intervention
- KA2507
- Conditions
- Solid Tumor, Adult
- Sponsor
- Karus Therapeutics Limited
- Enrollment
- 20
- Locations
- 1
- Primary Endpoint
- The occurrence of dose limiting toxicity
- Status
- Completed
- Last Updated
- 5 years ago
Overview
Brief Summary
The aim of the study is to evaluate the safety/tolerability, pharmacokinetic, and pharmaco-dynamic effects of KA2507 and establish the maximum tolerated dose (MTD). Patients with PD-L1 expressing solid tumors which have relapsed or are refractory to prior treatment will be eligible to participate in this study.
Following completion of the multiple ascending dose study, the protocol may be amended to include expansion cohorts in patients with melanoma and/or other solid tumors.
Detailed Description
The aim of the study is to evaluate the safety/tolerability, pharmacokinetic, and pharmaco-dynamic effects of KA2507 and establish the maximum tolerated dose (MTD). Patients with PD-L1 expressing solid tumors which have relapsed or are refractory to prior treatment will be eligible to participate in this study. Following completion of the multiple ascending dose study, the protocol may be amended to include expansion cohorts in patients with melanoma and/or other solid tumors. This is a multiple ascending dosing (MAD) study of up to 6 treatment regimens cohorts based on using a 3+3 design (up to 36 patients overall). The principal objective is to establish the maximum tolerated dose, safety, tolerability and pharmacokinetic (PK) profile in blood and urine of this HDAC6 inhibitor in patients with solid tumors and to explore effects on pharmacodynamic markers of target engagement and response to treatment. Daily/twice daily doses will be given as open label monotherapy. A review of safety and PK data will be conducted once the last patient in each cohort reaches day 28 of treatment. The review will confirm the dose to be used for the subsequent cohort. Dose escalation will be continued until the MTD is reached. Upon completion of the dose escalation phase of the study, dose expansion phases will be planned. Patients responding to treatment may elect to remain on therapy until disease progression, death or the investigator decides to stop treatment.
Investigators
Eligibility Criteria
Inclusion Criteria
- •Age ≥18 years at the screening visit.
- •Patients with histologically or cytologically documented, confirmed diagnosis of advanced malignancy, whose disease failed to respond to or progressed after standard therapy or they could not tolerate standard therapy.
- •Measurable or evaluable disease according to RECIST v1.
- •ECOG performance status of 0 or
- •Predicted life expectancy ≥12 weeks.
- •For men and women of child-bearing potential, willing to use adequate contraception (i.e., latex condom, cervical cap, diaphragm, abstinence, etc.) for the entire duration of the study.
- •If female, must be either postmenopausal, sterilised or, if sexually active, effectively practicing an acceptable method of contraception (either oral, parenteral, or implantable hormonal contraceptives, intrauterine device or barrier and spermicide). Subjects must agree to use adequate contraception during the study and for at least 12 weeks (or longer as per local requirement) after the last dose of study treatment.
- •Male subjects agree to ensure that they or their female partner(s) use adequate contraception during the study and for at least 12 weeks (or longer as per local requirement) after the subject receives their last dose of study treatment.
Exclusion Criteria
- •Patients are not able to provide written informed consent to study participation
- •Patients who have been treated with most recent radiotherapy, hormonal therapy, immunotherapy, chemotherapy or investigational drugs within ≤21 days or 5 half-lives (whichever is shorter) from enrolment (screening), and/or who have any unresolved NCI Common Terminology Criteria of Adverse Events (CTCAE) v4.03 \> Grade 1 treatment-related side effect (with the exception of alopecia).
- •Patient has anemia due to HbS or HbC disease, alpha or beta thalassaemia
- •Patient has Glucose-6-phosphate deficiency
- •Patient has known or suspected history of cytochrome b5-MetHb-reductase pathway deficiency
- •Persons of Navajo, Athabaska Alaskan or Siberian Yakutsk descent
- •Patient has untreated severe hypothyroidism
- •Patient has laboratory estimations indicating organ system dysfunction:
- •Absolute neutrophil count (ANC) \<1.5 X 109/L
- •Platelets \<100 X 109/L
Arms & Interventions
KA2507 (HDAC6 inhibitor)
This is a single arm dose escalating study. Patients will be treated with open label KA2507 (HDAC6 inhibitor) capsules.
Intervention: KA2507
Outcomes
Primary Outcomes
The occurrence of dose limiting toxicity
Time Frame: 28 days
1. Any event with possible or probable relationship to study drug occurring up to day 28 from the start of treatment as assessed using the National Cancers Institutes Common Terminology Criteria for Adverse events version 4.03 therapy.
Secondary Outcomes
- Clinical outcomes using Immuno-RECIST criteria(24 weeks)
- Blood concentration of tubulin during KA2507 treatment(24 weeks)
- Concentration of KA2507 in plasma over time (hours) post dosing(24 weeks)
- Concentration of KA2507 in urine over time (hours) post dosing(24 weeks)
- Blood concentration of histone acetylation during KA2507 treatment(24 weeks)
- Number of Participants With Abnormal Laboratory Values and/or Adverse Events That Are Related to Treatment(24 weeks)
- Clinical outcomes using the RECIST 1.1 criteria(24 weeks)