A Study of Poziotinib in Previously Treated Participants With Locally Advanced or Metastatic NSCLC Harboring HER2 Exon 20 Mutations

NCT ID: NCT05378763

Last Updated: 2025-12-18

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

SUSPENDED

Clinical Phase

PHASE3

Total Enrollment

268 participants

Study Classification

INTERVENTIONAL

Study Start Date

2022-05-12

Study Completion Date

2028-12-25

Brief Summary

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The primary purpose of this study is to compare the progression-free survival (PFS) in participants with locally advanced or metastatic non-small cell lung cancer (NSCLC) harboring human epidermal growth factor receptor 2 (HER2) exon 20 mutations when treated with poziotinib versus docetaxel.

Detailed Description

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This is a Phase 3, active-controlled, multicenter study to compare the efficacy and safety/tolerability of poziotinib versus docetaxel in previously treated participants with locally advanced or metastatic NSCLC harboring HER2 exon 20 mutations.

Participants will be randomized in a 2:1 ratio to:

* Arm A: Poziotinib 8 milligrams (mg), twice daily (BID) or
* Arm B: Docetaxel 75 milligrams per meter square (mg/m\^2)

The Screening Period lasts up to 21 days prior to Cycle 1, Day 1 (C1D1). Participants will be treated in 21-day cycles or until disease progression, death, intolerable adverse events (AEs), initiation of non-protocol anti-cancer treatment, or other protocol-specified reasons.

Conditions

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NSCLC

Keywords

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Epidermal growth factor receptor (EGFR) HER2 Exon 20 mutation

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Poziotinib 8 mg

Participants will receive poziotinib 8 mg, orally, BID, in 21 day cycles or until disease progression, death, intolerable adverse events (AEs), initiation of non-protocol anti-cancer treatment, or other protocol-specified reasons for participant withdrawal from the study.

Group Type EXPERIMENTAL

Poziotinib

Intervention Type DRUG

Poziotinib tablets

Docetaxel 75 mg/m^2

Participants will receive docetaxel 75 mg/m\^2, intravenously (IV) on Day 1 of each 21-day treatment cycle or until disease progression, death, intolerable AEs, initiation of non-protocol anti-cancer treatment, or other protocol-specified reasons for participant withdrawal from the study.

Group Type ACTIVE_COMPARATOR

Docetaxel

Intervention Type DRUG

Docetaxel IV infusion

Interventions

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Poziotinib

Poziotinib tablets

Intervention Type DRUG

Docetaxel

Docetaxel IV infusion

Intervention Type DRUG

Other Intervention Names

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HM781-36

Eligibility Criteria

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Inclusion Criteria

Participant must:

1. Be willing and capable of providing signed and dated Informed Consent, adhering to dosing and visit schedules, and meeting the study requirements
2. Have histologically or cytologically confirmed NSCLC
3. Have at least one measurable NSCLC target lesion per RECIST v.1.1 by local assessment
4. Participant has had at least one prior systemic treatment for locally advanced or metastatic NSCLC, including platinum and a checkpoint inhibitor (CPI) therapy, unless the investigator affirms that a CPI was not medically indicated.
5. Have documentation of HER2 exon 20 mutation
6. Have an Eastern Cooperative Oncology Group (ECOG) performance status (PS) of 0 or 1
7. Have adequate hematologic, hepatic, and renal function at Baseline as per protocol

Exclusion Criteria

Participant:

1. Has had previous treatment with poziotinib for treatment of NSCLC
2. Has EGFR or anaplastic lymphoma kinase (ALK) genome tumor alterations
3. Has had previous treatment with docetaxel for locally advanced or metastatic NSCLC. If docetaxel was received in the neo-adjuvant or adjuvant setting, progressive disease must have occurred ≥6 months after the last dose to be eligible
4. Has spinal cord compression or leptomeningeal disease
5. Has a high risk of cardiac disease, as determined by the Investigator
6. Has a history of, or signs of Grade ≥2 pneumonitis on current imaging studies
7. Is unable to take drugs orally
8. Is pregnant or breast-feeding
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Spectrum Pharmaceuticals, Inc

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Bond Clinic, P.A.

Winter Haven, Florida, United States

Site Status

Countries

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United States

Other Identifiers

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SPI-POZ-301

Identifier Type: -

Identifier Source: org_study_id