Neoadjuvant Neratinib in Stage I-III HER2-Mutated Lobular Breast Cancers

This phase II trial tests how well neratinib prior to the primary treatment (neoadjuvant) works in treating patients with stage I-III HER2 mutated lobular breast cancers. Neratinib is in a class of medications called kinase inhibitors. It works by blocking the action of an abnormal protein that signals cancer cells to multiply. This helps slow or stop the spread of cancer cells. Giving neratinib in addition to normal therapy may work better in treating cancer than the endocrine therapy patients would normally receive.

Study Overview

• Status: Not yet recruiting
• Conditions: Invasive Breast Lobular Carcinoma; Anatomic Stage I Breast Cancer; Anatomic Stage II Breast Cancer; Anatomic Stage III Breast Cancer
• Intervention / Treatment: Procedure: Biospecimen Collection; Procedure: Endocrine Therapy; Procedure: Biopsy of breast; Drug: Neratinib; Procedure: Mammogram; Procedure: Magnetic Resonance Imaging; Procedure: Breast Surgery; Procedure: Ultrasound

Detailed Description

PRIMARY OBJECTIVE:

I. Determine efficacy of neoadjuvant neratinib in combination with endocrine therapy.

SECONDARY OBJECTIVES:

I. Determine additional efficacy outcomes of neoadjuvant neratinib in combination with endocrine therapy.

II. Compare the safety and tolerability of neratinib plus endocrine therapy.

CORRELATIVE OBJECTIVE:

I. Establish HER2-mutant invasive lobular carcinoma (ILC) organoids.

OUTLINE: Patients are randomized to 1 of 2 treatments.

TREATMENT A: Patients receive standard of care endocrine therapy over 4 weeks for 1 cycle. Patients undergo breast tissue biopsy during the lead-in window/cycle 1. Patients then endocrine therapy and neratinib orally (PO) daily for 20 weeks in the absence of disease progression or unacceptable toxicity. Patients undergo breast surgery during weeks 24-25. Patients undergo collection of blood samples every 4 weeks while on treatment, at weeks 4 and 24, and at time of surgery. Patients undergo mammogram, ultrasound, or breast magnetic resonance imaging (MRI) prior to surgery.

TREATMENT B: Patients receive standard of care endocrine therapy and neratinib PO over 4 weeks for 1 cycle. Patients undergo breast tissue biopsy during the lead-in window/cycle 1. Patients then continue endocrine therapy and neratinib PO daily for 20 weeks in the absence of disease progression or unacceptable toxicity. Patients undergo breast surgery during weeks 24-25. Patients undergo collection of blood samples every 4 weeks while on treatment, at weeks 4 and 24, and at time of surgery. Patients undergo mammogram, ultrasound, or breast MRI prior to surgery.

After completion of study treatment, patients are followed up for 4 weeks after study drugs interruption.

• Study Type: Interventional
• Enrollment (Estimated): 30
• Phase: Phase 2

Contacts and Locations

• Study Contact: Name: Vanderbilt-Ingram Services for Timely Access; Phone Number: 800-811-8480; Email: cip@vumc.org

Study Locations

• United States
  • Georgia
    • Atlanta, Georgia, United States, 30322
      • Emory University/ Winship Cancer Institute
      • Principal Investigator: Kevin Kalinsky, MD
  • Pennsylvania
    • Pittsburgh, Pennsylvania, United States, 15213
      • University of Pittsburgh Medical Center
      • Principal Investigator: Adam Brufsky, MD
  • Tennessee
    • Nashville, Tennessee, United States, 37203
      • Vanderbilt University/Ingram Cancer Center
      • Principal Investigator: Laura Kennedy, MD, PhD
      • Contact: Vanderbilt-Ingram Service for Timely Access; Phone Number: 800-811-8480; Email: cip@vumc.org
  • Texas
    • Dallas, Texas, United States, 75390
      • University of Texas, Southwestern
      • Principal Investigator: Carlos Arteaga, MD
    • Houston, Texas, United States, 77030
      • Baylor College of Medicine
      • Principal Investigator: Bora Lim, MD

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

Each patient will be entered into this study only if all of these criteria are met:

• Subjects aged 18 years or older at signing of informed consent.
• New diagnosis of clinical stage I-III HR+ histologically-proven (i.e. absent or decreased e-cadherin expression) invasive lobular carcinoma
• Synchronous breast tumors are permitted as long as the synchronous tumor is ER+ and HER2-negative.
• ER+ disease defined as ≥1% estrogen receptor (ER) positive consistent with current American Society of Clinical Oncology/College of American Pathologists (ASCO/CAP) or European Society of Medical Oncology (ESMO) guidelines)
• At the time of screening, histologically confirmed cancers in patients with previously documented activating HER2 mutation (see Appendix A) confirmed by a Clinical Laboratory Improvement Amendments (CLIA)-certified or equivalent laboratory.
• Archival tissue availability (if not available a fresh tumor biopsy will be required) and subject must agree to submission of sample for central testing
• Minimum tumor size of ≥1.5 cm by US, mammogram, MRI imaging, or clinical breast exam
• ECOG performance status 0 or 1

• Patients must have adequate hematologic, hepatic, and renal function. All laboratory tests must be obtained within 1 month of study entry. This includes:

  • Estimated glomerular filtration rate of ≥50 mL/min
  • Albumin ≥ 2.5 g/dL
  • ANC ≥1500/mm^3
  • Platelet count ≥100,000/mm^3
  • HgB ≥ 9 g/dL
  • Total serum bilirubin ≤ 1.5 x ULN (in patients with known Gilbert Syndrome, a total bilirubin ≤ 3.0 x ULN, with direct bilirubin ≤ 1.5 x ULN)
  • AST and ALT ≤ 3 x ULN
• Pre-, peri-, or post-menopausal, confirmed by history or laboratory testing as needed
• Diagnostic biopsy tissue availability with sufficient tumor to permit NGS (if not available, a fresh biopsy will be required)
• No prior treatment for current diagnosis of breast cancer

• For patients who are not postmenopausal (women) or surgically sterile (absence of ovaries and/or uterus or vasectomy), agreement to remain abstinent or to use two adequate methods of contraception (e.g., condoms, diaphragm, vasectomy/vasectomized partner, tubal ligation), during the treatment period and for at least 30 days after the last dose of study treatment. Hormone based oral contraceptives are not allowed on study. Postmenopausal is defined as:

  • Age ≥ 55 years
  • Age ≤ 55 years and amenorrheic for 12 months in the absence of chemotherapy, tamoxifen, toremifene, or ovarian suppression; or follicle stimulating hormone and estradiol in the postmenopausal range. Female participants of childbearing potential are eligible to participate if they agree to use a highly effective method of contraception that has a low user dependency consistently and correctly.

Note: The effects of neratinib on the developing fetus are unknown and endocrine therapy is contraindicated in pregnancy. For this reason and because teratogenic effects have been observed in nonclinical studies and neratinib, women of child-bearing potential must agree to use adequate contraception (hormonal or barrier method of birth control; abstinence) prior to study entry and for the duration of the study participation, and for 1 month after the last dose of study medication. Should a woman become pregnant while she or her partner is participating in this study, she should inform her treating physician immediately. Men treated or enrolled on this protocol must also agree to use adequate contraception prior to the study, for the duration of study participation and 3.5 months after completion of study treatment.

Exclusion Criteria:

• Evidence of distant metastatic disease
• Synchronous breast cancer that is estrogen receptor negative OR HER2-amplified OR requires treatment with neoadjuvant chemotherapy per the judgement of the treating physician
• Patients harboring ineligible somatic HER2 mutations, such as those that are subclonal in nature or those resulting in the expression of truncated proteins including alterations that result in premature stop codon or a change in reading frame (ie, frame shift mutations).
• Prior endocrine therapy for breast cancer within the last 2 years
• Women who are pregnant, are planning to become pregnant, or are breast-feeding
• Any investigational treatment for the current diagnosis of breast cancer
• HER2 amplification by FISH (HER2:CEP17 ratio >2.0) or IHC (HER2 (3+)
• Hepatic function impairment as defined by AST or ALT > 3x ULN OR total serum bilirubin > 1.5 (in patients with known Gilbert syndrome, a total bilirubin of > 3.0 x ULN or direct bilirubin > 1.5 x ULN)
• Significant chronic gastrointestinal disorder with diarrhea as a major symptom (eg, Crohn's disease, malabsorption, or Grade ≥2 National Cancer Institute [NCI] Common Terminology Criteria for Adverse Events Version 4.0 [CTCAE version 4.0] diarrhea of any etiology at baseline.
• Evidence of significant medical illness, abnormal laboratory finding, or psychiatric illness/social situations that could, in the Investigator's judgment, make the patient inappropriate for this study.
• Known hypersensitivity to any component of the investigational product, required combination therapy, or loperamide.
• Unable or unwilling to swallow tablets.
• Unable or unwilling to complete study procedures such as research biopsies or imaging
• Any medical condition that in the judgement of the co-investigator would impair the patient's ability to complete the planned study therapy

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: None (Open Label)

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Active Comparator: Treatment A (endocrine therapy); Patients receive standard of care endocrine therapy over 4 weeks for 1 cycle. Patients undergo breast tissue biopsy during the lead-in window/cycle 1. Patients then endocrine therapy and neratinib PO daily for 20 weeks in the absence of disease progression or unacceptable toxicity. Patients undergo breast surgery during weeks 24-25. Patients undergo collection of blood samples every 4 weeks while on treatment, at weeks 4 and 24, and at time of surgery. Patients undergo mammogram, ultrasound, or breast MRI prior to surgery.	Procedure: Biospecimen Collection; Undergo collection of blood samples; Procedure: Endocrine Therapy; Undergo endocrine therapy; Procedure: Biopsy of breast; Undergo breast biopsy; Drug: Neratinib; Taken by mouth; Procedure: Mammogram; Undergo Mammogram; Procedure: Magnetic Resonance Imaging; Undergo breast Magnetic Resonance Imaging; Procedure: Breast Surgery; Undergo Breast Surgery
Experimental: Treatment B (endocrine therapy, neratinib); Patients receive standard of care endocrine therapy and neratinib PO over 4 weeks for 1 cycle. Patients undergo breast tissue biopsy during the lead-in window/cycle 1. Patients then continue endocrine therapy and neratinib PO daily for 20 weeks in the absence of disease progression or unacceptable toxicity. Patients undergo breast surgery during weeks 24-25. Patients undergo collection of blood samples every 4 weeks while on treatment, at weeks 4 and 24, and at time of surgery. Patients undergo mammogram, ultrasound, or breast MRI prior to surgery.	Procedure: Biospecimen Collection; Undergo collection of blood samples; Procedure: Endocrine Therapy; Undergo endocrine therapy; Procedure: Biopsy of breast; Undergo breast biopsy; Drug: Neratinib; Taken by mouth; Procedure: Mammogram; Undergo Mammogram; Procedure: Magnetic Resonance Imaging; Undergo breast Magnetic Resonance Imaging; Procedure: Breast Surgery; Undergo Breast Surgery; Procedure: Ultrasound; Undergo Ultrasound

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
Preoperative endocrine prognostic index score	Up to 5 years

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Pathological complete response rate	Will be summarized for the entire cohort by response.	Up to 5 years
Change in Ki67		At 4 weeks
Residual cancer burden index	Will be summarized for the entire cohort by response	Up to 5 years
Rates of breast conservation therapy	Will be summarized for the entire cohort by response	Up to 5 years
Incidence of adverse events (NCI Common Terminology Criteria for Adverse Events version 5.0 (CTCAE v5.0)		Up to 5 years

Collaborators and Investigators

• Sponsor: Vanderbilt-Ingram Cancer Center
• Collaborators: National Cancer Institute (NCI); Puma Biotechnology, Inc.
• Investigators: Principal Investigator: Laura Kennedy, MD, PhD, Vanderbilt University/Ingram Cancer Center

Study record dates

Study Major Dates

• Study Start (Estimated): April 30, 2024
• Primary Completion (Estimated): January 30, 2029
• Study Completion (Estimated): January 30, 2030

Study Registration Dates

• First Submitted: June 15, 2023
• First Submitted That Met QC Criteria: June 15, 2023
• First Posted (Actual): June 26, 2023

Study Record Updates

• Last Update Posted (Actual): January 22, 2024
• Last Update Submitted That Met QC Criteria: January 19, 2024
• Last Verified: January 1, 2024

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Skin Diseases; Neoplasms by Histologic Type; Neoplasms; Neoplasms by Site; Adenocarcinoma; Carcinoma; Neoplasms, Glandular and Epithelial; Breast Diseases; Neoplasms, Ductal, Lobular, and Medullary; Breast Neoplasms; Carcinoma, Lobular
• Other Study ID Numbers: VICC-NCBRE23172; NCI-2023-04468 (Registry Identifier: NCI, Clinical Trials Reporting Program); 1R01CA273246-01A1 (U.S. NIH Grant/Contract: National Institutes of Health)

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: UNDECIDED

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: Yes
• Studies a U.S. FDA-regulated device product: No
• product manufactured in and exported from the U.S.: No