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NCT Number: NCT06423911

Study of Olverembatinib (HQP1351) in Patients With CP-CML

A Global Multicenter, Open Label, Randomized, Phase 3 Registrational Study of Olverembatinib (HQP1351) in Patients with Chronic Phase Chronic Myeloid Leukemia (POLARIS-2)

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Key information

About this study

The hypothesis suggests that in Part A, olverembatinib leads to a higher MMR rate compared to bosutinib in CP-CML patients without the T315I mutation; and in Part B, olverembatinib can provide therapeutic benefits to CP-CML patients with the T315I mutation.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

Patients eligible for inclusion in this study must meet all of the following criteria.

  • Age ≥ 18 years old.
  • Diagnosis of CML-CP
  • Part A: Previously treated with at least two approved TKIs Part B: T315I mutation at screening.
  • Eastern Cooperative Oncology Group (ECOG) performance status (PS) ≤ 2.
  • Written informed consent obtained prior to any screening procedures.
  • Patients with adequate organ functions

Exclusion criteria

Patients eligible for this study must not meet any of the following criteria.

  • For Part A only: T315I mutation at any time prior to starting study treatment.
  • Active infection that requires systemic drug therapy
  • Impairment of gastrointestinal (GI) function or GI disease that may significantly alter absorption of study drugs
  • Previous treatment with or known / suspected hypersensitivity to olverembatinib or any of its excipients.
  • Previous treatment with or known / suspected hypersensitivity to bosutinib or any of its excipients.
  • Pregnant or nursing (lactating) women.

Treatment and study plan

Olverembatinib

Drug

olverembatinib QOD

Bosutinib

Drug

Bosutnib QD

Primary outcomes

  1. MMR rate Part A

    Time frame: 24 weeks

    To compare the major molecular response (MMR) rate at 24 weeks of olverembatinib versus bosutinib

  2. MMR rate Part B

    Time frame: 24 weeks

    To evaluate the MMR rate by 24 weeks of olverembatinib in CML-CP patients with T315I mutation

Study contacts

Contact information is provided by the study sponsor or research team.

Huanshan Guo

CONTACT

[email protected]

Kate Shantz

CONTACT

[email protected]

301-509-0038

Sponsors and collaborators

Lead sponsor

Ascentage Pharma Group Inc.

Industry

Registry information

Official study title

This is a Global, Multi-center, Open-label Randomized and Registrational Phase 3 Study of Olverembatinib (HQP1351) in Patients With Chronic Phase Chronic Myeloid Leukemia

Acronym: POLARIS-2

Important dates

Study start
2024
Primary completion
2025
Study completion
2026
First posted
May 21, 2024
Registry last updated
Jun 3, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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