This is a first in human, non-randomized, open-label, dose escalation study to investigate the safety, pharmacokinetics, immunogenicity and pharmacodynamics of repeat doses of KHK2823.
This is a Phase 1, multi-center, open-label, dose-escalation study of KHK2823 in adult patients with previously untreated AML who are not candidates for intensive remission induction therapy; relapsed/refractory AML for whom no other standard therapy is available or appropriate; or relapsed/refractory MDS who have received prior therapy with a hypomethylating agent, such as decitabine and azacitidine or who are not candidates to receive a hypomethylating agent, this would include high risk or transfusion-dependent low risk patients. Patients must have documented primary or secondary AML or MDS according to World Health Organization (WHO) criteria. Following the provision of signed informed consent, patients will be screened for entry into the study. The study consists of 2 parts. In Part 1, 3 to 6 patients per cohort will be enrolled sequentially in up to 7 dose-escalation cohorts to establish the MTD. KHK2823 will be administered once weekly. In Part 2, up to an additional 18 patients may be enrolled to further evaluate the safety, PK, PD, potential anti-leukemic activity of KHK2823.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
39
single agent KHK2823
University of Sussex, Royal Sussex County Hospital
Brighton, United Kingdom
Beatson West of Scotland Cancer Centre
Glasgow, United Kingdom
St James's Institute of Oncology
Leeds, United Kingdom
NIHR/Wellcome UCLH Clinical Research Facility University College Hospital London
London, United Kingdom
Number of Participants with Adverse Events as a Measure of Safety and Tolerability.
Time frame: Assessed weekly for duration of treatment (anticipated minimum 8 weeks), plus 42 day follow up period
Pharmacokinetics: Peak serum concentration (Cmax) Time to reach Cmax (tmax) Minimum serum concentration (Ctrough) Area under curve (AUC) Half-life (t1/2) Clearance (CL) Volume of distribution (Vd) Accumulation ratio (R)
Time frame: Assessed during first 24 weeks of treatment, plus 42 day follow up period
Disease Response: overall response rate (ORR), overall survival (OS), event-free survival (EFS), relapse-free survival (RFS), progression-free survival (PFS) and disease-free survival (DFS)
Time frame: Assessed every 8 weeks for duration of treatment (anticipated minimum 8 weeks), plus 14 day follow up period
Immunogenicity: anti-KHK2823 antibody
Measure of human anti-drug antibody
Time frame: Assessed every 4 weeks for first 24 weeks of treatment, plus 42 day follow up period
Pharmacodynamics: CD123+
Measure of KHK2823 target expression
Time frame: Assessed during first 24 weeks of treatment, plus 42 day follow up period
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St Bartholomew's Hospital
London, United Kingdom
Northern Centre for Cancer Care, Freeman Road Hospital
Newcastle upon Tyne, United Kingdom
Southampton General Hospital
Southampton, United Kingdom