HERTHENA-Lung02: A Study of Patritumab Deruxtecan Versus Platinum-based Chemotherapy in Metastatic or Locally Advanced EGFRm NSCLC After Failure of EGFR TKI Therapy

Phase 3

Active, not recruiting

Conditions: Nonsquamous Non-small Cell Lung Cancer
EGFR L858R
EGFR Exon 19 Deletion

Interventions: Drug: Patritumab Deruxtecan
Drug: Platinum-based chemotherapy

Registration Number: NCT05338970

Lead Sponsor: Daiichi Sankyo

Brief Summary: Disease progression is typical for patients with epidermal growth factor receptor mutated (EGFRm) non-small cell lung cancer (NSCLC). Standard platinum-based chemotherapy offers limited efficacy and an unfavorable safety profile.There is an urgent need for more effective and tolerable therapies for patients with EGFRm NSCLC who have exhausted available targeted therapies. Clinical evidence suggest that patritumab deruxtecan constitutes a promising investigational therapy for patients with EGFRm NSCLC.

Detailed Description: Patritumab deruxtecan (HER3-DXd, U3-1402) is an antibody-drug conjugate (ADC) comprising an anti-HER3 mAb linked to a topoisomerase I inhibitor that is in clinical development for patients with NSCLC, metastatic breast cancer, and colorectal cancer.

The primary objective of the current study is to compare the efficacy of patritumab deruxtecan versus platinum-based chemotherapy, as measured by progression-free survival (PFS) and the key secondary endpoint of overall survival (OS), in participants with metastatic or locally advanced NSCLC with an EGFR-activating mutation (exon 19 deletion or L858R) after failure of third-generation (eg, osimertinib, lazertinib, aumolertinib, alflutinib) EGFR TKI therapy.

Recruitment & Eligibility

Status: ACTIVE_NOT_RECRUITING

Sex: All

Target Recruitment: 586

Inclusion Criteria

Is a male or female subject aged ≥18 years (follow local regulatory requirements if the legal age of consent for study participation is >18 years old).
Has histologically or cytologically documented metastatic or locally advanced non-squamous NSCLC not amenable to curative surgery or radiation.
Has documentation of an EGFR-activating mutation detected from tumor tissue or blood sample: exon 19 deletion or L858R at diagnosis or thereafter.
Received 1 or 2 prior line(s) of an approved EGFR TKI treatment in the metastatic or locally advanced setting, which must include a third -generation EGFR TKI
May have received either neoadjuvant and/or adjuvant treatment if progression to metastatic or locally advanced disease occurred at least 12 months after the last dose of such therapy and subsequently experienced disease progression on or after third-generation EGFR TKI treatment administered in the metastatic or locally advanced setting.
Has not received any other prior systemic therapies in the metastatic or locally advanced setting (including chemotherapy, immunotherapy etc) (even if administered in combination with EGFR TKI).
Has documentation of radiographic disease progression while receiving or after receiving a third generation EGFR TKI for metastatic or locally advanced disease.
Has at least 1 measurable lesion as per RECIST v1.1 by Investigator assessment.
Is willing to have a tumor biopsy or provide recently obtained tumor tissue.
Has an Eastern Cooperative Oncology Group performance status (ECOG PS) of 0 or 1 at Screening.
Has adequate bone marrow reserve and organ function based on local laboratory evaluation within 14 days prior to randomization:
- Platelet count: ≥100,000/mm^3 or ≥100 × 10^9/L within 14 days prior to the assessment of platelet count during the Screening Period
- Absolute neutrophil count: ≥1500/mm^3 or ≥1.5 × 10^9/L within 14 days prior to the assessment of absolute neutrophil count during the Screening Period
- Hemoglobin (Hgb): ≥9.0 g/dL within 14 days prior to the assessment of hemoglobin during the Screening Period
- Creatine clearance (CrCl): CrCl ≥45 mL/min calculated by using the Cockcroft-Gault equation or measured CrCl
- Aspartate aminotransferase (AST)/Alanine aminotransferase (ALT): AST/ALT ≤3× Upper limit of normal (ULN)
- Total bilirubin (TBL): TBL ≤1.5 × ULN
- Serum albumin: ≥2.5 g/dL
- Prothrombin time (PT) or Prothrombin time-International normalized ratio (PT-INR) and activated partial thromboplastin time (aPTT)/partial thromboplastin time (PTT): ≤1.5 × ULN, except for participants receiving coumarin-derivative anticoagulants or other similar anticoagulant therapy who must have PT-INR within therapeutic range as deemed appropriate by the Investigator

Exclusion Criteria

Has any previous histologic or cytologic evidence of small cell OR combined small cell/non-small cell disease in the archival tumor tissue or pretreatment tumor biopsy, or squamous NSCLC histology
Has any history of interstitial lung disease (ILD) (including pulmonary fibrosis or radiation pneumonitis), has current ILD, or is suspected to have such disease by imaging during Screening
Has clinically severe respiratory compromise (based on the Investigator's assessment) resulting from intercurrent pulmonary illnesses including, but not limited to the following:
- Any underlying pulmonary disorder, restrictive lung disease, or pleural effusion
- Any autoimmune, connective tissue, or inflammatory disorders where there is documented, or a suspicion of pulmonary involvement at the time of Screening
- OR prior complete pneumonectomy
Is receiving chronic systemic corticosteroids dosed at >10 mg prednisone or equivalent anti-inflammatory activity or any form of immunosuppressive therapy prior to randomization
Has any history of or evidence of current leptomeningeal disease
Has evidence of clinically active spinal cord compression or brain metastases, defined as being symptomatic and untreated, or requiring therapy with corticosteroids or anticonvulsants to control associated symptoms
Any prior treatment with any agent including an antibody drug conjugate (ADC) containing a chemotherapeutic agent targeting topoisomerase I, human epidermal growth factor receptor 3 (HER3) antibody, and any systemic therapies (other than EGFR TKIs) in the metastatic/locally advanced setting, including chemotherapy or any other systemic therapy in combination with an EGFR TKI
Has history of other active malignancy within 3 years prior to randomization, except for adequately resected nonmelanoma skin cancer, adequately treated intraepithelial carcinoma of the cervix, and any other curatively treated in situ disease
Has uncontrolled or significant cardiovascular disease prior to randomization
Has active hepatitis B and/or hepatitis C infection, such as those with serologic evidence of active viral infection within 28 days of randomization
Has a known human immunodeficiency virus (HIV) infection that is not well controlled
Has clinically significant corneal disease

Study & Design

Study Type: INTERVENTIONAL

Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Patritumab deruxtecan	Patritumab Deruxtecan	Participants who will be randomized to receive patritumab deruxtecan (HER3-DXd) 5.6 mg/kg q3W.
Platinum-based chemotherapy	Platinum-based chemotherapy	Participants who will be randomized to receive platinum-based chemotherapy for 4 cycles: pemetrexed plus either cisplatin or carboplatin. Participants without disease progression after 4 cycles of platinum plus pemetrexed therapy may continue treatment with maintenance pemetrexed with no restriction on the number of cycles.

Primary Outcome Measures

Name	Time	Method
Progression-free Survival (PFS) as Assessed by Blinded Independent Central Review (BICR) Based on RECIST v1.1	Baseline up to approximately 49 months	Progression-free survival (PFS) is defined as the time from the date of randomization to the earlier of the dates of the first documentation of objective progression of disease or death due to any cause.

Secondary Outcome Measures

Name	Time	Method
Objective Response Rate (ORR) as Assessed by BICR and Investigator Review Based on RECIST v1.1	Baseline up to approximately 49 months	Objective response rate (ORR) is defined as the proportion of participants who have a confirmed best overall response (BOR) of complete response (CR) or partial response (PR).
Duration of Response (DoR) as Assessed by BICR and Investigator Review Based on RECIST v1.1	Baseline up to approximately 49 months	Duration of response (DoR) is defined as the time from the first documentation of objective response (CR or PR) to the earlier of the dates of the first documentation of objective progression of disease or death due to any cause.
Clinical Benefit Rate (CBR) as Assessed by BICR and Investigator Review Based on RECIST v1.1	Baseline up to approximately 49 months	Clinical benefit rate (CBR) will be assessed by BICR and Investigator based on RECIST v1.1. CBR is defined as the proportion of participants who have a confirmed BOR of CR, PR, or stable disease (SD) that lasts for at least 180 days.
Overall Survival (OS)	Baseline up to approximately 49 months	Overall survival (OS) is defined as the time from the date of randomization to the date of death due to any cause.
Mean Change from Baseline in Patient's Global Impression of Severity	Baseline up to approximately 49 months	The PGI-S is a one-item questionnaire that contains six response options.
Mean Change from Baseline in EuroQol Questionnaire-5 dimensions-5 levels (EQ-5D-5L)	Baseline up to approximately 49 months	The EQ-5D-5L is a standardized instrument that will be used for measuring generic health status required for health technology assessments.
Percentage of Participants Who Have Treatment-emergent ADA	Baseline up to approximately 49 months	The immunogenicity of patritumab deruxtecan will be confirmed by assessing the anti-drug antibodies.
Disease Control Rate (DCR) as Assessed by BICR and Investigator Review Based on RECIST v1.1	Baseline up to approximately 49 months	Disease control rate (DCR) is defined as the proportion of participants who have a confirmed BOR of CR, PR, or SD.
Intracranial PFS as Assessed by BICR	Baseline up to approximately 49 months	Intracranial PFS is defined as the time from the date of randomization to the earlier of the dates of the first documented radiographic intracranial disease progression or death, whichever comes first, as assessed by BICR per CNS-RECIST, in participants with CNS lesion(s) at baseline by BICR per CNS-RECIST.
Mean Change from Baseline in Patient's Global Impression of Change	Baseline up to approximately 49 months	The PGI-C is a 7-point scale depicting a participant's rating of overall improvement.
Mean Change from Baseline in Patient's Global Impression of Treatment Tolerability	Baseline up to approximately 49 months	The PGI-TT will capture the patient's overall impression of treatment tolerability.
Mean Change from Baseline in European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire Core 30 (EORTC-QLQ-C30)	Baseline up to approximately 49 months	The EORTC-QLQ-C30 will assess the patient's overall quality of life (QoL).
Progression-free Survival (PFS) as Assessed by Investigator Review Based on RECIST v1.1	Baseline up to approximately 49 months	Progression-free survival (PFS) is defined as the time from the date of randomization to the earlier of the dates of the first documentation of objective progression of disease or death due to any cause.
Time to Response (TTR) as Assessed by BICR and Investigator Review Based on RECIST v1.1	Baseline up to approximately 49 months	Time to response (TTR) is defined as the time from the date of randomization to the date of the first documentation of response (CR or PR) that is subsequently confirmed.
Mean Change from Baseline in Non-small Cell Lung Cancer - Symptom Assessment Questionnaire	Baseline up to approximately 49 months	The NSCLC-SAQ will assess disease-related symptom change in patients with NSCLC.
Progression-free Survival (PFS) as Assessed by Local Standard Clinical Practice	Baseline up to approximately 49 months	Progression-free survival (PFS) by local standard clinical practice is defined as the time from date of randomization to the documented progression on the first new anticancer therapy (if administered) or death due to any cause, whichever occurred first.
Percentage of Participants Who Are Anti-Drug Antibody (ADA)-Positive (Baseline and Post-Baseline)	Baseline up to approximately 49 months	The immunogenicity of patritumab deruxtecan will be confirmed by assessing the anti-drug antibodies.
Number of Participants With Treatment-emergent Adverse Events (TEAEs)	Baseline up to approximately 49 months	TEAEs will be graded by using National Cancer Institute-Common Terminology Criteria for Adverse Events (NCI-CTCAE) v5.0.

Trial Locations

Locations (179): Alaska Oncology and Hematology LLC
🇺🇸
Anchorage, Alaska, United States
Highlands Oncology
🇺🇸
Springdale, Arkansas, United States
City of Hope
🇺🇸
Duarte, California, United States
Moores Cancer Center at the UC San Diego Health
🇺🇸
La Jolla, California, United States
Scripps MD Anderson Cancer Center
🇺🇸
La Jolla, California, United States
USC Norris Comprehensive Cancer Center
🇺🇸
Los Angeles, California, United States
Kaiser Permanente - Vallejo Medical Center
🇺🇸
Vallejo, California, United States
Innovative Clinical Research Institute
🇺🇸
Whittier, California, United States
Sarah Cannon/Florida Cancer Specialists - FCS South
🇺🇸
Port Charlotte, Florida, United States
Emory University
🇺🇸
Atlanta, Georgia, United States
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Alaska Oncology and Hematology LLC
🇺🇸Anchorage, Alaska, United States