Try our beta test site
IMPORTANT: Listing of a study on this site does not reflect endorsement by the National Institutes of Health. Talk with a trusted healthcare professional before volunteering for a study. Read more...

A Phase II, Randomized, Open-label Study of Lapatinib Plus Chemotherapy Versus Trastuzumab Plus Chemotherapy in HER2-positive and p95HER2-positive Metastatic Breast Cancer

This study has been withdrawn prior to enrollment.
Information provided by (Responsible Party):
GlaxoSmithKline Identifier:
First received: June 3, 2010
Last updated: March 11, 2013
Last verified: March 2013
This is a Phase II, randomized, open-label, multi-center study evaluating the efficacy and safety of lapatinib in combination with chemotherapy versus trastuzumab in combination with chemotherapy in women with HER2-positive and p95HER2-positive metastatic breast cancer (MBC). Eligible subjects will have newly diagnosed metastatic breast cancer (Stage IV) either as a primary diagnosis or as a recurrence following treatment of curative intent; not have received systemic or local treatment for MBC and have breast cancer that is positive for HER2 and p95HER2. The primary objective is to compare progression-free survival (PFS) of lapatinib plus chemotherapy versus trastuzumab plus chemotherapy as first-line treatment in subjects with MBC exhibiting concurrent HER2 overexpression (and/or gene amplification) and expression of carboxy-terminal fragments of HER2 (p95HER2). The secondary objectives are to evaluate overall survival, overall response rate, clinical benefit response rate and the safety as well as tolerability of lapatinib plus chemotherapy and trastuzumab plus chemotherapy.

Condition Intervention Phase
Neoplasms, Breast
Drug: Lapatinib
Biological: Trastuzumab
Drug: Docetaxel
Drug: Paclitaxel
Drug: Vinorelbine
Phase 2

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: A Phase II, Randomized, Open-label Study of Lapatinib Plus Chemotherapy Versus Trastuzumab Plus Chemotherapy as First-line Treatment for Women With HER2-positive and p95HER2-positive Metastatic Breast Cancer

Resource links provided by NLM:

Further study details as provided by GlaxoSmithKline:

Primary Outcome Measures:
  • Progression-free survival [ Time Frame: Time from randomization to disease progression ]

Secondary Outcome Measures:
  • Overall Survival [ Time Frame: end of study ]
  • Overall response rate (ORR: complete response [CR] or partial response [PR]) [ Time Frame: end of study ]
  • Clinical benefit response rate (CBR: CR or PR at any time, or stable disease [SD] >=24 weeks [ Time Frame: end of study ]
  • Safety and tolerability of lapatinib plus chemotherapy and trastuzumab plus chemotherapy [ Time Frame: end of study ]

Enrollment: 0
Study Start Date: October 2011
Estimated Study Completion Date: March 2018
Estimated Primary Completion Date: December 2016 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Lapatinib plus Chemotherapy
Lapatinib (1250mg once daily) in combination with chemotherapy (docetaxel, paclitaxel or vinorelbine) selected at the discretion of the investigator
Drug: Lapatinib
oral, reversible small molecule tyrosine kinase inhibitor of HER2 receptor
Drug: Docetaxel
Taxane chemotherapy
Drug: Paclitaxel
Taxane chemotherapy
Drug: Vinorelbine
Vinka alkaloid
Experimental: Trastuzumab plus Chemotherapy
Trastuzumab (either 6mg/kg q3-weekly or 2mg/kg weekly) in combination with chemotherapy (docetaxel, paclitaxel or vinorelbine) selected at the discretion of the investigator
Biological: Trastuzumab
monoclonal antibody directed to HER2 receptor
Drug: Docetaxel
Taxane chemotherapy
Drug: Paclitaxel
Taxane chemotherapy
Drug: Vinorelbine
Vinka alkaloid


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

Inclusion Criteria:

  • Female ≥ 18 years of age
  • Histologically or cytologically confirmed invasive breast cancer with distant metastasis(ses) (designated as Stage IV or metastatic breast cancer)

    • Diagnosis with Stage IV or metastatic disease at either primary diagnosis or recurrence
  • Not received prior systemic or local treatment (e.g., chemotherapy, endocrine or radiotherapy) for Stage IV/metastatic breast cancer

    • Prior adjuvant and/or neo-adjuvant therapy is permitted
  • Documentation of HER2 overexpression or gene amplification, in the invasive component of either a metastatic disease site or primary tumor, defined as: 3+ by 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]
  • Documentation by the central laboratory of positive p95HER2 expression in the invasive component of either a metastatic disease site (preferred) or primary tumor
  • No history of CNS metastases (including leptomeningeal involvement) or stable CNS metastases (defined as asymptomatic and off steroids for ≥ 3 months)
  • Baseline Left Ventricular Ejection Fraction (LVEF) ≥50% measured by echocardiography (ECHO) or multi-gated acquisition scan (MUGA)
  • Recovered or stabilized from all adverse events associated with prior anti-cancer therapies, including radiotherapy, at the time of screening
  • Eastern Cooperative Oncology Group (ECOG) Performance Status of 0-2
  • Have adequate marrow and organ function as defined as:

SYSTEM LABORATORY VALUES Hematologic ANC ≥1.5 x 109/L Hemoglobin ≥9 g/dL (after transfusion if needed) Platelets ≥100 x 109/L Hepatic Albumin ≥ 2.5 g/dL Serum bilirubin ≤1.5 x ULN unless due to Gilbert's syndrome AST and ALT ≤3 x ULN Renal Calculated creatinine clearance ≥ 40 mL/min Serum Creatinine ≤1.5 mg/dL or 132.6µmol/L (Abbreviations: ANC, absolute neutrophil count; ULN, upper limit of normal; AST, aspartate aminotransferase; ALT, alanine aminotransferase)

  • Women of childbearing potential, including women whose last menstrual period was <12 months ago (unless surgically sterile) must have a negative serum pregnancy test and agree to use effective contraception, as defined in protocol
  • Signed Informed Consent Form

Exclusion Criteria:

  • History of other malignancy. Exception: Subjects who have been disease-free for 5 years or subjects with a history of completely resected non-melanoma skin cancer (basal or squamous) are eligible
  • Concurrent anti-cancer treatment or concurrent treatment with an investigational drug
  • Administration of an investigational drug within 30 days or 5 half-lives, whichever is longer, preceding the first dose of study treatment
  • Prior treatment with anti-HER2 therapy, except trastuzumab or lapatinib (time from last dose of trastuzumab or lapatinib to randomization must be ≥3 months)
  • 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
  • Current active hepatic or biliary disease (with exception of Gilbert's syndrome, asymptomatic gallstones, liver metastases or stable chronic liver disease per investigator assessment)
  • Concurrent disease or condition, or any pre-existing medical disorder that in the opinion of the investigator may interfere with the subject's safety, obtaining informed consent or compliance to the study procedures
  • Pregnant or lactating female
  • Any clinically significant gastrointestinal abnormalities that may alter absorption such as malabsorption syndrome or major resection of the stomach or bowels (consult with GSK Medical Monitor if uncertain about eligibility)
  • Known immediate or delayed hypersensitivity reaction or idiosyncrasy to drugs chemically related to any of the study drugs or their excipients that, in the opinion of the investigator contra-indicates participation
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01137994

Sponsors and Collaborators
Study Director: GSK Clinical Trials GlaxoSmithKline
  More Information

Responsible Party: GlaxoSmithKline Identifier: NCT01137994     History of Changes
Other Study ID Numbers: 113333
Study First Received: June 3, 2010
Last Updated: March 11, 2013

Keywords provided by GlaxoSmithKline:
Metastatic Breast Cancer

Additional relevant MeSH terms:
Breast Neoplasms
Neoplasms by Site
Breast Diseases
Skin Diseases
Albumin-Bound Paclitaxel
Antineoplastic Agents, Phytogenic
Antineoplastic Agents
Tubulin Modulators
Antimitotic Agents
Mitosis Modulators
Molecular Mechanisms of Pharmacological Action
Protein Kinase Inhibitors
Enzyme Inhibitors processed this record on April 25, 2017