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A Single Arm, Phase Ib/II Trial of Single Agent Pacritinib in Patients With 1q21.3 Amplified Solid Tumors Enriching for Interleukin-1 Receptor-associated Kinase 1 Pathway Activation (PAIR)
Sponsor: National University Hospital, Singapore
Summary
This is a single arm, open-label, lead in phase Ib dose confirmation, followed by phase II study with 2 parallel study cohorts. Patients will be pre-screened for presence of 1q21.3 copy number amplification in plasma samples prior to screening process. Only patients with confirmed plasma cell-free DNA (cfDNA) 1q21.3 copy number amplification who successfully meet study eligibility criteria will be enrolled. The phase Ib segment will be carried out in a standard 3+3 design, with a projected enrolment of 3 to 18 patients to determine the RP2D. In the phase II portion, 2 parallel cohorts will be enrolled (Cohort A: 1q21.3 amplified breast cancers, Cohort B: 1q21.3 amplified other solid tumors). Based on the Simon 2 stage optimal design, 12 patients will be enrolled in each cohort for stage I of the study, and assessed for PFS. If at least 3 of 12 patients meet study response criteria, the study will then be expanded to stage 2 to include a total of 25 patients in each cohort. Accounting for 10% attrition rate, a maximum of 28 patients will be enrolled into each cohort for phase II of the study.
Official title: A Single Arm, Phase Ib/II Trial of Single Agent Pacritinib in Patients With 1q21.3 Amplified Solid Tumors Enriching for Interleukin-1 Receptor-associated Kinase 1 (IRAK1) Pathway Activation (PAIR)
Key Details
Gender
All
Age Range
21 Years - 99 Years
Study Type
INTERVENTIONAL
Enrollment
74
Start Date
2020-07-13
Completion Date
2026-07
Last Updated
2025-09-25
Healthy Volunteers
No
Conditions
Interventions
Pacritinib
3+3 design Dose Level 1 :200mg BD every 4 weeks Dose Level -1 :200mg OM, 100mg ON every 4 weeks Dose Level -2 :100mg BD every 4 weeks
Locations (1)
National University Hospital
Singapore, Singapore