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
Study ID
NCT04520269
Phase
PHASE1/PHASE2
Status
Active Not Recruiting

Conditions

Eligibility Criteria

Sex
ALL
Age
21 Years - 99 Years
Healthy Volunteers
Not accepted

Interventions

  • Pacritinib — DRUG
    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

Study Details

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.

Key Dates

Start date
Jul 13, 2020
Status verified
Sep 2025
Primary completion
Jul 31, 2026
Completion
Jul 31, 2026

Study Design

Enrollment
74 participants (estimated)
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT

Arms

  • Experimental: Patient with (cfDNA) 1q21.3 copy number amplification
    The phase Ib segment will be carried out in a standard 3+3 design. 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).

Primary Outcome Measure

Overall radiological response rate [ Time Frame: 36 months ]

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