Last updated: 11/04/2018 06:29:12
This product has been transferred to Novartis. GSK Clinical Study Register is no longer maintained for this study. The most up to date information is available on clinicaltrials.gov.

ALTTO (Adjuvant Lapatinib And/Or Trastuzumab Treatment Optimisation) Study; BIG 2-06/N063DALTTO

GSK study ID
EGF106708
See study documents
Clinicaltrials.gov ID
NCT00490139
EudraCT ID
2006-000562-36
EU CT Number
Not applicable
Trial status
No longer a GSK study
No longer a GSK study
Overview
Eligibility
Locations
Study documents
Results summary
Plain language summaries
Additional information

Trial overview

Official title: A randomised, multi-centre, open-label, phase III study of adjuvant lapatinib, trastuzumab, their sequence and their combination in patients with HER2/ErbB2 positive primary breast cancer
Trial description: This is a randomised, open label multi-centre phase III study comparing the activity of lapatinib alone versus trastuzumab alone versus trastuzumab followed by lapatinib versus lapatinib concomitantly with trastuzumab in the adjuvant treatment of patients with ErbB2 overexpressing and/or amplified breast cancer. Patients will be enrolled according to one of two design schemas, with Design 2 having two chemotherapy options (Design 2 and 2B), and will be randomised to one of four treatment regimens within each design schema.
The primary objective of this study is to compare disease-free survival (DFS) in patients with HER2 overexpressing and/or amplified breast cancer randomised to trastuzumab for one year versus lapatinib for one year versus trastuzumab (12 or 18 weeks, according to assigned design) followed by a six-week treatment-free interval followed by lapatinib (28 or 34 weeks, according to assigned design) versus trastuzumab in combination with lapatinib for one year (52 weeks). Secondary objectives include treatment comparisons with respect to overall survival, time to recurrence, time to distant recurrence, safety and tolerability, incidence of brain metastasis, and analyses conducted separately for cohorts of patients defined by presence or absence of cMyc oncogene amplification, expression level of PTEN and presence or absence of the p95HER2 receptor. On August 18, 2011, the ALTTO Independent Data Monitoring Committee (IDMC) met to review the first planned interim analysis. The IDMC reported that the comparison of lapatinib alone versus trastuzumab alone crossed the futility boundary, indicating that the lapatinib alone arm was unlikely to meet the pre-specified criteria to demonstrate non-inferiority to trastuzumab alone with respect to disease-free survival (DFS). The IDMC also stated that the other three arms (trastuzumab alone, sequential trastuzumab/lapatinib arm and the combination arm) should continue as planned with no changes.
Primary purpose:
Treatment
Trial design:
Parallel Assignment
Masking:
None (Open Label)
Allocation:
Randomized
Primary outcomes:

Disease-free survival (DFS)

Timeframe: From randomization until the date of the first occurrence of disease recurrence, a contralateral invasive breast cancer, a second primary cancer, or death from any cause (median follow-up of 4.5 years)

Secondary outcomes:

Overall survival (OS)

Timeframe: From randomization until death due to any cause (median follow-up of 4.5 years)

Time to recurrence

Timeframe: From randomization until the date of the first occurrence of a disease recurrence (median follow-up of 4.5 years)

Time to central nervous system recurrence

Timeframe: From randomization until the first central nervous system recurrence (median follow-up of 4.5 years)

Time to distant recurrence

Timeframe: From randomization until the date of the first occurrence of distant recurrence (median follow-up of 4.5 years)

DFS ignoring non-breast second primary malignancies

Timeframe: From randomization until the date of the first occurrence of disease recurrence, a contralateral invasive breast cancer, a second primary cancer, or death from any cause (median follow-up of 4.5 years)

Interventions:
  • Drug: Lapatinib
  • Vaccine: Trastuzumab
    • Enrollment:
    8381
    Primary completion date:
    2013-06-12
    Observational study model:
    Not applicable
    Time perspective:
    Not applicable
    Clinical publications:
    Not applicable
    Medical condition
    Neoplasms, Breast
    Product
    lapatinib
    Collaborators
    National Cancer Institute, Breast International Group, National Cancer Institute of Canada, North Central Cancer Treatment Group, N/A
    Study date(s)
    May 2007 to November 2022
    Type
    Interventional
    Phase
    3

    Participation criteria

    Sex
    Female & Male
    Age
    18+ years
    Accepts healthy volunteers
    none
    • Age ≥ 18 years
    • Eastern Cooperative Oncology Group (ECOG) performance status ≤ 1;
    • History of any prior (ipsi- and/or contralateral) invasive breast carcinoma;
    • Past (less than 10 years) or current history of malignant neoplasms, except for curatively treated 1) basal and squamous cell carcinoma of the skin or 2) carcinoma in situ of the cervix.
    Inclusion and exclusion criteria
    Inclusion criteria:
    • Age ≥ 18 years
    • Eastern Cooperative Oncology Group (ECOG) performance status ≤ 1;
    • Non-metastatic operable primary invasive adenocarcinoma of the breast fulfilling the following: a.Histologically confirmed b.Adequately excised (exceptions: patients who have 'non-resectable' deep margin invasion are eligible provided they have had or will receive radiotherapy encompassing the region concerned; patients with histologically documented infiltration of the skin (pT4) are eligible provided they have undergone or will receive radiotherapy encompassing the tumour bed); c.Axilla dissected; sentinel node sampling is allowed provided that axillary dissection follows confirmation of a positive sentinel node; sentinel node sampling alone is NOT acceptable after neoadjuvant chemotherapy (in patients receiving neoadjuvant chemotherapy lymph node status will be considered unknown, regardless of the results of post-chemotherapy axillary dissection); d.Axillary node positive patient OR node negative patient with a tumour greater than or equal to 1.0 cm in greatest diameter. For clarification, isolated tumour cells (ITC) are considered pN0 and micrometastases are considered pN1
    • Known hormone receptor status (ER/PgR or ER alone)
    • For Designs 1 and 2: Patients must have received at least four cycles of an approved anthracycline-based (neo-) adjuvant chemotherapy regimen or listed as an exception in Table 5 of the protocol. For Design 1: Randomization must be performed no longer than 12 weeks from day 1 of the last chemotherapy cycle after obtaining a post-chemotherapy LVEF ≥ 50. Study treatment must start no more than 14 days after randomization For Design 2: Randomization must be performed no longer than 6 weeks from day 1 of the last anthracycline-containing chemotherapy cycle after obtaining a post-anthracycline chemotherapy LVEF ≥ 50. Study treatment must start no more than 14 days after randomization and must be concurrent with taxanes. For Design 2B: Randomisation must be performed no longer than 8 weeks from definitive surgery. Non-anthracycline platinum containing regimen (docetaxel and carboplatin) and study treatment must start concomitantly and no more than 14 days after randomisation.
    • Baseline LVEF ≥50% measured by echocardiography or MUGA scan. For Design 1 and Design 2
    • after completion of all anthracycline-based (neo-) adjuvant chemotherapy and prior to the targeted therapy(ies); for Design 2B
    • prior to targeted therapy(ies) and chemotherapy (docetaxel and carboplatin)
    • Over expression and/or amplification of HER2 in the invasive component of the primary tumour (in case of neoadjuvant treatment, tissue sample used for HER2 testing should be collected before neoadjuvant treatment starts), according to one of the following definitions [Wolff et al 2007] and confirmed by central laboratory prior to randomization:
    • 3+ over expression by IHC (> 30% of invasive tumour cells);
    • 2+ or 3+ (in 30% or less neoplastic cells) over expression by IHC AND in situ hybridization (FISH/CISH) test demonstrating HER2 gene amplification;
    • HER2 gene amplification by FISH/CISH ( > 6 HER2 gene copies per nucleus, or a FISH ratio [HER2 gene copies to chromosome 17 signals] of > than 2.2.) Patients with a negative or equivocal overall result (FISH test ratio of ≤ 2.2, ≤ 6.0 HER2 gene copies per nucleus) and staining scores of 0, 1+, 2+ or 3+ (in 30% or less neoplastic cells) by IHC are not eligible for participation in the trial. Equivocal local results may be submitted for a final determination by the central laboratory.
    • Completion of all necessary baseline laboratory and radiological investigations
    • Signed written informed consent (approved by an Independent Ethics Committee (IEC) and obtained prior to any study specific screening procedures).
    Exclusion criteria:
    • History of any prior (ipsi- and/or contralateral) invasive breast carcinoma;
    • Past (less than 10 years) or current history of malignant neoplasms, except for curatively treated 1) basal and squamous cell carcinoma of the skin or 2) carcinoma in situ of the cervix. NOTE: Patients with a prior malignancy diagnosed greater than 10 years in the past who have been curatively treated with surgery ONLY, WITHOUT radiation therapy or systemic therapy (chemotherapy or endocrine) are eligible for the study. Patients with any prior diagnosis of breast cancer or melanoma, at any time, are excluded from this study.
    • Any clinically staged T4 tumour, including inflammatory breast cancer;
    • Bilateral tumours;
    • This exclusion criterion has been removed as of protocol amendment 1. NOTE: multifocal/multicentric tumours are permitted:
    • If the patient is node-negative: one of the lesions must be equal or greater than 1.0 cm (sum of the lesion diameters is not acceptable) AND must have positive HER2 status centrally-confirmed;
    • If patient is node-positive: lesion size does not matter BUT one of the lesions must have HER2 positivity centrally-confirmed. If several lesions are found to be HER2 positive locally, the largest lesion should be considered for central review.
    • Maximum cumulative dose of doxorubicin >360mg/m² or maximum cumulative dose of epirubicin >720mg/m² or any prior anthracyclines unrelated to the present breast cancer;
    • (Neo-) or adjuvant chemotherapy using peripheral stem cell or bone marrow stem cell support;
    • Any prior mediastinal irradiation except internal mammary node irradiation for the present breast cancer;
    • Patients with positive or suspicious internal mammary nodes identified by sentinel node technique which have not been irradiated or will not be irradiated, or patients with supraclavicular lymph node involvement (confirmed by fine needle aspirate or biopsy);
    • Prior use of anti-HER2 therapy for any reason or other prior biologic or immunotherapy for breast cancer;
    • Concurrent anti-cancer treatment, except hormonal therapy or radiotherapy for the present breast cancer;
    • Concurrent anti-cancer treatment in another investigational trial with hormone therapy or immunotherapy unless approved by the Executive Committee:
    • Serious cardiac illness or medical conditions including but not confined to: History of documented congestive heart failure (CHF) or systolic dysfunction (LVEF <50%); High-risk uncontrolled arrhythmias (ventricular tachycardia, high-grade AV-block, supraventricular arrhythmias which are not adequately rate-controlled); Angina pectoris requiring antianginal medication; Clinically significant valvular heart disease; Evidence of transmural infarction on ECG; Poorly controlled hypertension (e.g. systolic >180mm Hg or diastolic >100mm Hg);
    • Other concurrent serious diseases that may interfere with planned treatment including severe pulmonary conditions/illness;
    • Any of the following abnormal laboratory tests immediately prior to randomization: serum total bilirubin >1.5 x upper limit of normal (ULN), in the case of known Gilbert's syndrome, a higher serum total bilirubin (<2 X ULN) is allowed; alanine amino transferase (ALAT) or aspartate amino transferase (ASAT) >2.5 x ULN; alkaline phosphatase (ALP) > 2.5 x ULN; serum creatinine >2.0 x ULN; total white blood cell count (WBC) <2.5 x 10^9/L; absolute neutrophil count <1.5 x 10^9/L; platelets <100 x 10^9/L.
    • Unresolved or unstable serious adverse events from prior adjuvant chemotherapy or radiotherapy;
    • Malabsorption syndrome, any disease significantly affecting gastrointestinal function, or resection of the stomach or small bowel, or persons unable to swallow oral medication. Subjects with ulcerative colitis are also excluded;
    • Pregnant, lactating or women of childbearing potential without a negative pregnancy test
    • urine or serum
    • within 7 days prior to randomization, irrespective of the method of contraception used, including tubal ligation;
    • Women of childbearing potential and male participants with partners of child bearing potential, including women whose last menstrual period was <12 months ago (unless surgically sterile) who are unable or unwilling to use adequate contraceptive measures during study treatment (adequate contraceptive measures: intra-uterine device, barrier method
    • condoms, diaphragm
    • also in conjunction with spermicidal jelly, or total abstinence. Oral, injectable, or implant hormonal contraceptives are not indicated in this patient population); -Concomitant use of CYP3A4 inhibitors or inducers.

    Trial location(s)

    This study does not involve prospective enrollment of participants.

    Study documents

    Scientific result summary
    Available language(s): English
    Download document(s)

    If you wish to request for full study report, please contact - [email protected]

    Results overview

    Refer to study documents

    Recruitment status
    No longer a GSK study
    Actual primary completion date
    2013-06-12
    Actual study completion date
    Not applicable

    Plain language summaries

    Plain language summaries of clinical trial results for Phase 2-4 clinical trials that were initiated on or after January 2022 will be posted by GSK within one year following study completion.

    Additional information about the trial

    Additional information
    Not applicable
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