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A Study to Compare the Safety and Efficacy of an Aromatase Inhibitor in Combination With Lapatinib, Trastuzumab or Both for the Treatment of Hormone Receptor Positive, HER2+ Metastatic Breast Cancer

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ClinicalTrials.gov Identifier: NCT01160211
Recruitment Status : Completed
First Posted : July 12, 2010
Results First Posted : July 15, 2019
Last Update Posted : June 30, 2022
Sponsor:
Collaborator:
GlaxoSmithKline
Information provided by (Responsible Party):
Novartis ( Novartis Pharmaceuticals )

Study Description
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Brief Summary:
A study to compare the safety and efficacy of an aromatase inhibitor in combination with lapatinib, trastuzumab or both for the treatment of hormone receptor positive, HER2+ metastatic breast cancer (MBC).

Condition or disease Intervention/treatment Phase
Neoplasms, Breast Drug: lapatinib Drug: trastuzumab Drug: Aromatase inhibitor Phase 3

Detailed Description:
This was a Phase III, randomized, open-label, multi-center, three arm study of lapatinib plus trastuzumab plus an aromatase inhibitor (AI), trastuzumab plus an AI, or lapatinib plus an AI to evaluate the efficacy and safety of these regimens as first- or second-line therapy in postmenopausal subjects with hormone receptor positive (HR+), HER2-positive metastatic breast cancer (MBC) who have received prior trastuzumab and endocrine therapies. Eligible subjects was postmenopausal; had tumors that are ER and/or PgR positive and HER2-positive; had Stage IV metastatic breast cancer. The primary objective was to demonstrate superiority of lapatinib/trastuzumab/AI combination versus (vs.) trastuzumab/AI combination for progression free survival. The secondary objectives were to evaluate progression free survival in trastuzumab/AI vs. lapatinib/AI and trastuzumab/lapatinib/AI vs. lapatinib/AI, overall survival, overall response rate, clinical benefit rate, the safety and tolerability of all three treatment groups (lapatinib plus trastuzumab plus an AI, trastuzumab plus an AI, or lapatinib plus an AI), and quality of life status relative to baseline.
Study Design
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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 369 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: A Phase III Trial to Compare the Safety and Efficacy of Lapatinib Plus Trastuzumab Plus an Aromatase Inhibitor (AI) vs. Trastuzumab Plus an AI vs. Lapatinib Plus an AI as 1st- or 2nd- Line Therapy in Postmenopausal Subjects With Hormone Receptor+, HER2-positive Metastatic Breast Cancer (MBC) Who Received Prior Trastuzumab and Endocrine Therapies
Actual Study Start Date : May 5, 2011
Actual Primary Completion Date : March 11, 2016
Actual Study Completion Date : June 6, 2022

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Hormones

Arms and Interventions
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Arm Intervention/treatment
Experimental: Lapatinib plus trastuzumab plus aromatase inhibitor
Experimental
 Drug: lapatinib
1000 mg by mouth once a day

Drug: trastuzumab
Loading dose of 8 mg/kg IV followed by the maintenance dose of 6 mg/kg IV every 3 weeks

Drug: Aromatase inhibitor
Aromatase inhibitor (either letrozole, anastrozole, or exemestane) of investigator's choice given by mouth once daily
Active Comparator: trastuzmab plus aromatase inhibitor
Active Comparator
 Drug: trastuzumab
Loading dose of 8 mg/kg IV followed by the maintenance dose of 6 mg/kg IV every 3 weeks

Drug: Aromatase inhibitor
Aromatase inhibitor (either letrozole, anastrozole, or exemestane) of investigator's choice given by mouth once daily
Active Comparator: lapatinib plus aromatase inhibitor
Active Comparator
 Drug: Aromatase inhibitor
Aromatase inhibitor (either letrozole, anastrozole, or exemestane) of investigator's choice given by mouth once daily

Drug: lapatinib
1500 mg by mouth once daily


Outcome Measures
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Primary Outcome Measures :
  1. PFS of Lapatinib+Trastuzumab+AI Combination vs. Trastuzumab+AI Combination [ Time Frame: approximately 5 years ]
    Progression free survival (PFS) of lapatinib/trastuzumab/aromatase inhibitor (AI) combination vs. trastuzumab/AI combination. PFS is defined as the time from randomization to the earliest date of disease progression (with radiological evidence) or death from any cause, or to the date of censor.

  2. Median Kaplan Meier Estimates for PFS of Lapatinib+Trastuzumab+AI Combination vs. Trastuzumab+AI Combination [ Time Frame: approximately 5 years ]
    Progression free survival (PFS) of lapatinib/trastuzumab/aromatase inhibitor (AI) combination vs. trastuzumab/AI combination. PFS is defined as the time from randomization to the earliest date of disease progression (with radiological evidence) or death from any cause, or to the date of censor.


Secondary Outcome Measures :
  1. PFS of Trastuzumab/AI vs. Lapatinib/AI and Trastuzumab/Lapatinib/AI vs. Lapatinib/AI [ Time Frame: approximately 5 years ]
    PFS in the lapatinib arm vs. the trastuzumab arm and in the lapatinib+trastuzumab arm vs. the lapatinib arm.

  2. Overall Survival (OS) Events of Lapatinib+Trastuzumab+AI vs. Trastuzumab+AI and Lapatinib+AI vs. Trastuzumab+AI [ Time Frame: approximately 5 years ]
    OS was defined as the interval of time (in weeks) between the date of randomization and the date of death due to any cause. For subjects who did not die during the study, death was censored at the date of last contact.

  3. Overall Response Rate (ORR; Complete or Partial Response) in Lapatinib+Trastuzumab+AI vs. Trastuzumab+AI and Lapatinib+AI vs. Trastuzumab+AI [ Time Frame: approximately 5 years ]
    The best overall response was the best response recorded from the start of the treatment until disease progression/recurrence & was determined programmatically using investigators assessment of responses of target lesion, non-target lesion and new lesions based on RECIST v1.1. CR=disappearance of all target lesion & non-target lesions, if applicable, and no new lesion; PR = ≥30% decrease in the sum of the longest diameter of target lesions & non-target lesion was neither non-CR nor progressive disease (Non-PD) or not evaluable (NE); stable disease (SD) = Neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for PD (SD should maintain for at least 56 days); PD = ≥20% increase from nadir (smallest sum diameters recorded since treatment start) of the target lesions and/or any status for non-target lesions or appearance of new lesion; NE = cannot be classified by the above definitions. Overall Response (OR) = CR + PR.

  4. Clinical Benefit Rate (CBR; Complete Response, Partial Response, or Stable Disease for at Least 6 Months) in Lapatinib+Trastuzumab+AI vs. Trastuzumab+AI and Lapatinib+AI vs. Trastuzumab+AI [ Time Frame: approximately 5 years ]
    Clinical Benefit Rate (CBR) was defined as the percentage of patients with evidence of complete response (CR) or partial response (PR) at any time or maintaining SD for at least 24 weeks while on study, according to the investigator assessment of response per RECIST 1.1 criteria.

  5. Duration of Response in Lapatinib+Trastuzumab+AI vs. Trastuzumab+AI and Lapatinib+AI vs. Trastuzumab+AI [ Time Frame: approximately 5 years ]
    Kaplan-Meier estimates for duration of response in lapatinib+trastuzumab+AI vs. trastuzumab+AI and lapatinib+AI vs. trastuzumab+AI. Duration of response is defined as the time from first documented Complete Response or Partial Response until the first documented sign of Progressive Disease or Death, or to the date of censor.

  6. Changes in the Quality of Life (QoL) Status Relative to Baseline FACT-B Overall and Subscale Scores at Last On-treatment Assessment [ Time Frame: approximately 5 years ]
    Quality of life was assessed using the Functional Assessment of Cancer Therapy-Breast (FACT-B) questionnaire. It is a 37-item (27 general questions and 10 breast cancer specific questions) self-reporting instrument consisting of 5 dimensions: physical well-being (PWB), social well-being (SWB), emotional well-being (EWB), functional well-being (FWB), and a breast cancer subscale (BCS). The followings are the score ranges for each self-reporting subscale: • PWB : 0-28 • SWB : 0-28 • EWB : 0-24 • FWB : 0-28 • BCS : 0-40 FACT-B Total Outcome Index (TOI) = PWB + FWB + BCS (range:0 - 96) FACT-B Total Score = PWB + SWB + EWB + FWB + BCS (range:0-148) FACT-G Total Score = PWB + SWB + EWB + FWB (range:0-108) In the scoring system, negative stated items are reversed by subtracting the response from "4" and after reversing proper items, all subscale items are summed to a total, which is the subscale score. For all the FACIT scales and symptom indices, the higher the score the better cut off

  7. Time to Response in Lapatinib+Trastuzumab+AI vs. Trastuzumab+AI and Lapatinib+AI vs. Trastuzumab+AI [ Time Frame: approximately 5 years ]
    Time to response in lapatinib+trastuzumab+AI vs. trastuzumab+AI and lapatinib+AI vs. trastuzumab+AI. Time to response is defined as time from randomization to first documented Complete Response or Partial Response.


Eligibility Criteria
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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   Female
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria

Subjects eligible for enrollment in the study must meet all of the following criteria:

  1. Signed written informed consent. In Korea and Japan, subjects between >=18 and <20 years of age must also have a legal representative sign the written informed consent.

  2. Post-menopausal female subjects >=18 years of age. Post-menopausal as defined by any of the following:

    • Subjects at least 60 years of age.
    • Subjects under 60 years of age and amenorrhic for at least 12 consecutive months AND follicle-stimulating hormone (FSH) and estradiol levels in postmenopausal range (utilizing ranges from the local laboratory facility).
    • Prior bilateral oophorectomy.
    • Prior radiation castration with amenorrhea for at least 6 months
  3. Subjects must have a history of histologically confirmed breast cancer, with a clinically confirmed diagnosis of metastatic disease [confirmed by histology, cytology or other clinical means (e.g. CT, MRI)]. Subjects may have either measurable or non-measurable disease per Response Evaluation Criteria in Solid Tumors (RECIST 1.1)
  4. Tumors that are ER+ and/or PgR+ by local laboratory

  5. Documentation of HER2 overexpression or gene amplification, in the invasive component of either the primary tumor or metastatic disease site as defined as:

    • 3+ by Immunohistochemistry (IHC) and/or
    • HER2/neu gene amplification by fluorescence, chromogenic or silver in situ hybridization [FISH, CISH or SISH; >6 HER2/neu gene copies per nucleus or a FISH, CISH or SISH test ratio (HER2 gene copies to chromosome 17 signals) of ≥2.0]

  6. Subject must have received at least one prior regimen containing trastuzumab in combination with chemotherapy for breast cancer:.

    • Subject has ONLY received prior trastuzumab in combination with chemotherapy as neoadjuvant and/or adjuvant treatment. OR
    • Subject has received ONE prior trastuzumab-containing regimen for metastatic disease (and has progressed), and may or may not have received prior trastuzumab in combination with chemotherapy as neoadjuvant and/or adjuvant treatment.
  7. Subject must have received prior endocrine therapy (such as aromatase inhibitors or selective estrogen receptor modulators). 8. Subjects who have a life expectancy of > 6 months as assessed by the treating investigator

9. Subjects must have baseline Left Ventricular Ejection Fraction (LVEF) ≥50% measured by echocardiography (ECHO) or multi-gated acquisition scan (MUGA) 10. Subject must have an ECOG performance status of 0-1 11. All prior treatment related toxicities must be CTCAE (Version 4.0) ≤ Grade 1 at the time of randomization 12. Completion of screening assessments 13. Adequate baseline organ function. 14. Subjects must meet all of the following criteria:

  • QTc <450msec or
  • QTc <480msec for subjects with bundle branch block The QTc is the QT interval corrected for heart rate according to either Bazett's formula (QTcB) or to Fridericia's formula (QTcF), machine or manual over read, for males and females. The specific formula that will be used in a protocol should be determined prior to initiation of the study, and the formula used to determine inclusion and discontinuation should be the same throughout the study. The QTc should be based on single or averaged QTc values of triplicate electrocardiograms (ECGs) obtained over a brief recording period

Exclusion criteria:

  1. History of another malignancy. Exception: Subjects who have been disease-free for 5 years, or subjects with a history of completely resected non-melanoma skin cancer or successfully treated in situ carcinoma are eligible.
  2. Subjects with extensive symptomatic visceral disease including hepatic involvement and pulmonary lymphangitic spread of tumor, or the disease is considered by the investigator to be rapidly progressing or life threatening (subjects who are intended for chemotherapy)

  3. Serious cardiac illness or medical condition including but not confined to:

    • Uncontrolled arrhythmias
    • Uncontrolled or symptomatic angina
    • History of congestive heart failure (CHF)
    • Documented myocardial infarction <6 months from study entry
  4. Known history of, or clinical evidence of, central nervous system (CNS) metastases or leptomeningeal carcinomatosis
  5. Have acute or currently active/requiring anti-viral therapy hepatic or biliary disease (with the exception of subjects with Gilbert's syndrome, asymptomatic gallstones, liver metastases or stable chronic liver disease per investigator assessment)
  6. Have a concurrent disease or condition that may interfere with study participation, or any serious medical disorder that would interfere with the subject's safety (for example, active or uncontrolled infection or any psychiatric condition prohibiting understanding or rendering of informed consent)
  7. Have any clinically significant gastrointestinal abnormalities that may alter absorption such as malabsorption syndrome or major resection of the stomach or bowels
  8. Have a known immediate or delayed hypersensitivity reaction or idiosyncrasy to drugs chemically related to any of the study agents or their excipients that, in the opinion of the Investigator or GSK medical monitor, contraindicates their participation
  9. Any prohibited medication.
  10. Administration of an investigational drug within 30 days or 5 half-lives, whichever is longer, preceding the first dose of study treatment.
Contacts and Locations
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Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01160211


Locations
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Sponsors and Collaborators
Novartis Pharmaceuticals
GlaxoSmithKline
Investigators
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Study Director: Novartis Pharmaceuticals Novartis Pharmaceuticals
More Information
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Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):

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Responsible Party: Novartis Pharmaceuticals
ClinicalTrials.gov Identifier: NCT01160211    
Other Study ID Numbers: 114299
2010-019577-16 ( EudraCT Number )
CLAP016A2307 ( Other Identifier: Novartis )
First Posted: July 12, 2010    Key Record Dates
Results First Posted: July 15, 2019
Last Update Posted: June 30, 2022
Last Verified: June 2022
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: Yes
Plan Description:

Novartis is committed to sharing with qualified external researchers, access to patient-level data and supporting clinical documents from eligible studies. These requests are reviewed and approved by an independent review panel on the basis of scientific merit. All data provided is anonymized to respect the privacy of patients who have participated in the trial in line with applicable laws and regulations.

This trial data availability is according to the criteria and process described on www.clinicalstudydatarequest.com

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Studies a U.S. FDA-regulated Drug Product: Yes
Studies a U.S. FDA-regulated Device Product: No
Keywords provided by Novartis ( Novartis Pharmaceuticals ):
1st line MBC
MBC
hormone receptor positive
lapatinib
 trastuzumab
HER2 positive
aromatase inhibitor
Additional relevant MeSH terms:
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Breast Neoplasms
Neoplasms by Site
Neoplasms
Breast Diseases
Skin Diseases
Trastuzumab
Lapatinib
Aromatase Inhibitors
Antineoplastic Agents, Immunological
Antineoplastic Agents
 Tyrosine Kinase Inhibitors
Protein Kinase Inhibitors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Steroid Synthesis Inhibitors
Estrogen Antagonists
Hormone Antagonists
Hormones, Hormone Substitutes, and Hormone Antagonists
Physiological Effects of Drugs