Secondary BRain Metastases Prevention After Isolated Intracranial Progression on Trastuzumab/Pertuzumab or T-DM1 in Patients With aDvanced Human Epidermal Growth Factor Receptor 2+ brEast Cancer With the Addition of Tucatinib

Brain Metastases Clinical Trial

— BRIDGET  

Official title:

Secondary BRain Metastases Prevention After Isolated Intracranial Progression on Trastuzumab/Pertuzumab or T-DM1 in Patients With aDvanced Human Epidermal Growth Factor Receptor 2+ brEast Cancer With the Addition of Tucatinib

Clinical Trial Details — Status: Recruiting

Administrative data

• NCT number: NCT05323955
• Other study ID #: Pro00109777
• Status: Recruiting
• Phase: Phase 2
• Start date: March 23, 2023
• Est. completion date: April 2025

Study information

• Verified date: March 2024
• Source: Duke University
• Contact: Carey Anders, MD
• Phone: 919-684-5301
• Email: carey.anders[@]duke.edu
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

Patients with advanced HER2+ breast cancer on maintenance trastuzumab/pertuzumab or T-DM1 with 1st or 2nd intracranial disease event (brain metastases) and stable extracranial disease will be enrolled. They will receive local therapy with stereotactic radiosurgery ± surgical resection if indicated followed by enrollment. Patients will continue standard of care trastuzumab/pertuzumab or T-DM1 with the addition of tucatinib. Hormone receptor positive patients requiring endocrine therapy should continue. Study treatment will continue until disease progression or intolerable side effects. Patients on trial with extracranial disease progression with stable intracranial disease should continue tucatinib into next line of therapy.

Description:

Patients with advanced HER2+ breast cancer on either (1) first-line trastuzumab/pertuzumab OR (2) second-line T-DM1 in the metastatic setting OR (3) adjuvant trastuzumab-based therapy or T-DM1 with isolated intracranial recurrence will be included. Patients with de novo metastatic disease and brain metastases or isolated intracranial recurrence can enter upon initiation of maintenance trastuzumab/pertuzumab after chemotherapy if deemed necessary by treating oncologist and meeting other inclusion criteria. Patients with 1st or 2nd intracranial disease event (brain metastases) and stable extracranial disease will be enrolled. Third intracranial progression would be considered if > 12 month interval between second and third intracranial progression. They will receive local therapy with stereotactic radiosurgery ± surgical resection followed by enrollment. Patients will continue standard of care treatment trastuzumab/pertuzumab or T-DM1 with the addition of tucatinib. Hormone receptor-positive patients requiring endocrine therapy should continue. Study treatment will continue until intercranial disease progression or intolerable side effects. Patients with extracranial disease progression while on trial with stable intracranial disease should continue tucatinib into the next line of therapy as described in protocol. If a subject continues tucatinib into the next line therapy they are still considered on study treatment and will be monitored according to the protocol. Cycles will continue consecutively and not restart. Once the subject comes off tucatinib they are considered off study treatment and will enter the follow up period.

Recruitment information / eligibility

• Status: Recruiting
• Enrollment: 48
• Est. completion date: April 2025
• Est. primary completion date: April 2024
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

Subject must meet all of the following applicable inclusion criteria to participate in this

study:

• Written informed consent and HIPAA authorization for release of personal health information prior to registration. NOTE: HIPAA authorization may be included in the informed consent or obtained separately.
• Age = 18 years at the time of consent.
• Eastern Cooperative Oncology Group (ECOG) Performance Status of 0-2.
• Locally advanced/unresectable or metastatic breast cancer with presence of brain metastases (Stage IV).
• Histologically confirmed HER2+ breast carcinoma by ASCO-CAP guidelines, with HER2+ defined by in situ hybridization (ISH), immunohistochemistry (IHC), or fluorescence in situ hybridization (FISH) methodology on most recent biopsy (primary tissue).
• Currently receiving: (1) first-line trastuzumab/pertuzumab with or without endocrine therapy OR (2) second-line T-DM1 in the metastatic setting OR (3) adjuvant trastuzumab-based therapy or T-DM1 with isolated intracranial recurrence. Patients with de novo metastatic disease and brain metastases or isolated intracranial recurrence can enter upon initiation of maintenance trastuzumab/pertuzumab after chemotherapy if chemotherapy deemed necessary by treating oncologist and meeting other inclusion criteria.
• Systemic disease otherwise stable per RECIST 1.1 or no evidence of extracranial disease.
• Adequate hepatic and renal function and hematologic parameters:
• Absolute neutrophil count (ANC) = 1.0 × 109/L
• Platelets = 100 × 109/L
• Hemoglobin = 9 g/dL
• Total serum bilirubin = 1.5 times upper limit of normal (ULN)
• Aspartate aminotransferase (AST/SGOT) and alanine aminotransferase (ALT/SGPT) = 2.5 × ULN (or = 5 × ULN if liver metastases are present)
• Serum creatinine = 1.5 x ULN or estimated creatinine clearance = 50 mL/min as calculated using the Cockcroft-Gault (CG) equation
• Left ventricular ejection fraction (LVEF) = 50%.
• Central nervous system inclusion - Based on screening brain magnetic resonance imaging

(MRI), patients must have ALL of the following:

• Adequate local therapy to existing brain lesions = 5mm including surgical resection and/or stereotactic radiosurgery
• Limited to first or second intracranial progression. Third intracranial progression would be considered if > 12 month interval between second and third intracranial progression.
• Time since stereotactic radiosurgery (SRS) is = 7 days prior to first dose of study treatment.
• Time since surgical resection is = 14 days prior to first dose of study treatment.
• Time since local therapy < 12 weeks. Patients with de novo metastastic breast cancer presenting with brain metastases may enter following cessation of chemotherapy if within 24 weeks of local therapy to the brain and brain metastases have remained stable based on brain MRI. NOTE: Relevant records of any CNS treatment including radiation must be available to allow for classification of target and non-target lesions
• Females of childbearing potential must have a negative serum pregnancy test at screening. If a urine test is done and it is positive or cannot be confirmed as negative, a serum pregnancy test will be required. NOTE: Females are considered of child bearing potential unless they are surgically sterile (have undergone a hysterectomy, bilateral tubal ligation, or bilateral oophorectomy) or they are naturally postmenopausal for at least 12 consecutive months.
• Females of childbearing potential and males must be willing to abstain from heterosexual intercourse or to use contraception as outlined in the protocol. Exclusion Criteria:

Subjects meeting any of the criteria below may not participate in the study:

• Previously been treated with: Lapatinib, neratinib, afatinib, tucatinib or other investigational HER2/epidermal growth factor receptor (EGFR) or HER2 tyrosine kinase inhibitor (TKI) at any time previously (patients treated with adjuvant neratinib allowed if relapse > 12 months after last dose).
• Clinically significant cardiopulmonary disease.
• Clinically significant acute infection requiring systemic antibacterial, antifungal,

or antiviral therapy including:

• tuberculosis (clinical evaluation that includes clinical history, physical examination, and radiographic findings, and TB testing in line with local practice),
• hepatitis B (known positive HBV surface antigen (HBsAg) result),
• hepatitis C, or
• human immunodeficiency virus (positive HIV 1/2 antibodies) NOTE: Patients with a past or resolved HBV infection (defined as the presence of hepatitis B core antibody [anti-HBc] and absence of HBsAg) are eligible. Patients positive for hepatitis C (HCV) antibody are eligible only if polymerase chain reaction is negative for HCV RNA. Subjects with HIV/AIDS with adequate antiviral therapy to control viral load would be allowed if they are stable and have been on treatment for = 4 weeks prior to first dose of study drug(s). Subjects with viral hepatitis with controlled viral load would be allowed while on suppressive antiviral therapy. Testing not required.
• Unable for any reason to undergo MRI of the brain
• Use of a strong cytochrome P450 (CYP)2C8 inhibitor within 5 half-lives of the inhibitor, or a strong CYP3A4 or CYP2C8 inducer within 5 days prior to first dose of study treatment. See protocol.
• Central nervous system exclusion - Based on screening brain MRI, patients must not

have any of the following:

• Ongoing use of systemic corticosteroids for control of symptoms of brain metastases at a total daily dose of > 2 mg of dexamethasone (or equivalent)
• Diffuse leptomeningeal disease or positive CSF cytology; however, discreet dural-based metastases are allowed
• Poorly controlled seizures. Defined as seizures that continue to occur despite optimal anticonvulsant medications based on investigator discretion.
• History of whole brain radiation therapy
• Any untreated brain lesions = 5 mm
• Active infection requiring intravenous systemic therapy.
• Pregnant or breastfeeding (NOTE: breast milk cannot be stored for future use while the mother is being treated on study).
• Patients with a prior or concurrent malignancy within last 3 years whose natural history or treatment has the potential to interfere with the safety or efficacy assessment of the investigational regimen, per treating physician discretion, are not eligible for this trial.
• Treatment with any investigational drug within 30 days prior to registration.

Related Conditions & MeSH terms

• Advanced Breast Cancer
• Brain Metastases
• Brain Neoplasms
• Breast Neoplasms
• Human Epidermal Growth Factor 2 Positive Carcinoma of Breast
• Neoplasm Metastasis

Intervention

Drug:
• Trastuzumab
Administer per current package insert based on site standard of care guidelines
• Trastuzumab Emtansine (T-DM1)
Administer per current package insert based on site standard of care guidelines
• Pertuzumab
Administer per current package insert based on site standard of care guidelines
• Tucatinib
300 mg orally twice daily (21 Day Cycle)

Locations

Country	Name	City	State
United States	University of Michigan Health System	Ann Arbor	Michigan
United States	Dana Farber Cancer Institute	Boston	Massachusetts
United States	Ohio State University Comprehensive Cancer Center	Columbus	Ohio
United States	Duke University Medical Center	Durham	North Carolina
United States	MD Anderson Cancer Center	Houston	Texas
United States	Providence Portland Medical Center	Portland	Oregon
United States	Washington University in St. Louis	Saint Louis	Missouri

Sponsors (2)

Lead Sponsor	Collaborator
Carey Anders, M.D.	Seagen Inc.

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Progression Free Survival (PFS)	Evaluate the ability of tucatinib in combination with trastuzumab/pertuzumab or TDM-1 to prolong intracranial progression free survival (PFS) in patients compared to historical controls. PFS is defined as the time from the day of study treatment initiation until evidence of intracranial disease progression per RANO-BM or death from any cause.	3 years
Secondary	Progression Free Survival by RECIST 1.1	Evaluate the progression free survival by RECIST 1.1 criteria. PFS is defined as time from the day of study treatment initiation until evidence of disease progression per RECIST v1.1 or death from any cause.	3 years
Secondary	Progression Free Survival of Extracranial Disease	Evaluate PFS of extracranial disease. PFS is defined as time from the day of study treatment initiation until evidence of extracranial disease progression per RECIST v1.1 or death from any cause.	3 years
Secondary	Distant Versus Local Intracranial Progression Free Survival	Evaluate distant versus local intracranial PFS.	3 years
Secondary	Site of First Progression	Evaluate the site of first progression (CNS vs non-CNS). Site of first progression (CNS vs non-CNS) is defined by first site of progression on trial either within the central nervous system or extracranial disease as defined by investigator	3 years
Secondary	Overall Survival (OS)	Evaluate OS. OS defined as day of study treatment initiation until death from any cause.	3 years
Secondary	Assess Adverse Events	Evaluate the toxicity profile of agents in patients with brain metastases. Toxicity will be classified and graded according to the National Cancer Institute's Common Terminology Criteria for Adverse Events (CTCAE, version 5.0)	2 months