Modulation of Response to Hormonal Therapy With Lapatinib and/or Metformin in Patients With Metastatic Breast Cancer

Overview[ - collapse ][ - ]

Purpose Target Population: female patients with HER2-negative, ER and/or PgR positive breast cancer in progression after first-line hormonal therapy. The study rationale is based on the potentiality of reversing endocrine-resistance by Lapatinib - Activity on compensatory-adaptive mechanisms of hyperactivity of signals generated by HER2 family - Modulation of energy balance and signals associated to survival through AMPK activation (via Calmodulin) Metformin - Indirect mechanism, through reduced insulin receptors and IGFR stimulation, with reduces proliferative effects downstream - Direct mechanism, through AMPK activation (via LKB1), with reduced protein synthesis (mTOR inhibition) and increased availability of intracellular energy Lapatinib and Metformin - AMPK "Double"activation, through different potentially additional mechanisms. - Inhibition of proliferative mechanisms for interference on various intracellular target - IR (A e/o B); IGFR - EGFR; HER2 Primary objectives : 1. To assess the rate of patients free from disease progression at 3 months from randomization Secondary objectives : 1. To assess the overall response rate 2. To assess the duration of response 3. To assess 3-years overall survival rate 4. To assess tolerability of each proposed treatment Female patients with HER2-negative, ER and/or PgR positive breast cancer in progression after first-line hormonal therapy will randomized to receive: hormonal therapy + lapatinib or hormonal therapy + metformin or hormonal therapy + metformin + lapatinib with a ratio 1:1:1. For each arm of the study the following sample size is required: - First step: 23 patients, for a total of 69 patients in all 3 arms - Second step: further 33 patients, for a total of 168 patients in all 3 arms.
ConditionMetastatic Breast Cancer
InterventionDrug: Lapatinib
Drug: Metformin
PhasePhase 2
SponsorFondazione Michelangelo
Responsible PartyFondazione Michelangelo
ClinicalTrials.gov IdentifierNCT01477060
First ReceivedNovember 16, 2011
Last UpdatedFebruary 19, 2014
Last verifiedFebruary 2014

Tracking Information[ + expand ][ + ]

First Received DateNovember 16, 2011
Last Updated DateFebruary 19, 2014
Start DateNovember 2011
Estimated Primary Completion DateDecember 2013
Current Primary Outcome MeasuresRate of patients free from disease progression [Time Frame: 3 months from randomization] [Designated as safety issue: No]
Current Secondary Outcome Measures
  • overall response rate [Time Frame: 3 years] [Designated as safety issue: No]
  • Progression Free Survival [Time Frame: 3 years] [Designated as safety issue: No]
  • Time to progression [Time Frame: 3 years] [Designated as safety issue: No]
  • Overall survival [Time Frame: 3 years] [Designated as safety issue: No]To assess 3-years overall survival rate
  • Number of participants with toxicities as a measure of tolerability of each proposed treatment [Time Frame: 3 years] [Designated as safety issue: Yes]

Descriptive Information[ + expand ][ + ]

Brief TitleModulation of Response to Hormonal Therapy With Lapatinib and/or Metformin in Patients With Metastatic Breast Cancer
Official TitleModulation of Response to Hormonal Therapy With Lapatinib and/or Metformin in Patients With HER2-negative, ER and/or PgR Positive Metastatic Brest Cancer With Progressive Disease After First-line Therapy
Brief Summary
Target Population: female patients with HER2-negative, ER and/or PgR positive breast cancer
in progression after first-line hormonal therapy.

The study rationale is based on the potentiality of reversing endocrine-resistance by
Lapatinib

- Activity on compensatory-adaptive mechanisms of hyperactivity of signals generated by
HER2 family

- Modulation of energy balance and signals associated to survival through AMPK activation
(via Calmodulin) Metformin

- Indirect mechanism, through reduced insulin receptors and IGFR stimulation, with
reduces proliferative effects downstream

- Direct mechanism, through AMPK activation (via LKB1), with reduced protein synthesis
(mTOR inhibition) and increased availability of intracellular energy Lapatinib and
Metformin

- AMPK "Double"activation, through different potentially additional mechanisms.

- Inhibition of proliferative mechanisms for interference on various intracellular target

- IR (A e/o B); IGFR

- EGFR; HER2

Primary objectives :

1. To assess the rate of patients free from disease progression at 3 months from
randomization

Secondary objectives :

1. To assess the overall response rate

2. To assess the duration of response

3. To assess 3-years overall survival rate

4. To assess tolerability of each proposed treatment Female patients with HER2-negative,
ER and/or PgR positive breast cancer in progression after first-line hormonal therapy
will randomized to receive: hormonal therapy + lapatinib or hormonal therapy +
metformin or hormonal therapy + metformin + lapatinib with a ratio 1:1:1.

For each arm of the study the following sample size is required:

- First step: 23 patients, for a total of 69 patients in all 3 arms

- Second step: further 33 patients, for a total of 168 patients in all 3 arms.
Detailed Description
Treatment Plan Patient will continue to be treated with the same hormone therapy at the same
dose, route and schedule

Patients will be randomized to receive:

A: Lapatinib, 1250 mg/die, os B: Metformin, 1500 mg/die, os C: Lapatinib + Metformin, 1250
mg+1500 mg/die, os Patients will receive study treatment until disease progression is
documented, extraordinary medical circumstances occur, intolerable toxicities occur, or the
patient withdraws consent

Statistical consideration Randomization will be stratified according to the site of
metastases: visceral versus non-visceral lesions. The primary objective of this study is to
evaluate the rate of patients free of disease progression at 3 months from randomization.
The final analysis of this objective will be conducted when a total of 168 patients are
enrolled across the three arms. This is the number of patients needed for a test with an
experiment-wise alpha = 0.05 and power = 80% to show a statistically significant increment
of 10% to the rate of patients without disease progression at 3 months, assuming a rate of
5% for treatments without lapatinib and/or metformin (P0=5% and P1=15%). After having
accrued a total of 23 evaluable patients in each arm, the trial design can proceed to step 2
randomizing additional patients to each arm only if two or more patients are free of disease
progression at 3 months. Otherwise, the study arm with less than expected responses will be
discontinued. In the second stage 33 additional patients will be enrolled in each study arm
to reach a total of 56 total patients per arm. If less than 6 patients per arm will be free
of disease progression then the increment of corresponding treatment will be considered not
significant.

Procedures:

The study will consist of a screening period, a treatment period and follow up for survival
Screening Phase

Within 4 weeks prior randomization:

A signed written, informed consent will be obtained prior to any study specific assessments
are initiated. The following will be performed prior to randomization

- Radiographic complete assessment of disease status (chest Xray; liver ultrasound, bone
scan and CT or MR of target lesions and involved sites)

- Hematology and biochemistry

- Pregnancy test for women of child-bearing potential

- Cardiac assessment with ECG, echocardiography or multi-gated scintigraphic scan (MUGA)

- Medical history, physical examination, vital signs, signs and symptoms of breast cancer
lesions, weight, height, ECOG performance status

Treatment Phase:

MONTHLY up to 3 months since randomization

- Physical examination, including clinical disease assessment, ECOG performance status,
vital signs

- Hematology and biochemistry

- Safety evaluation (i.e. routine collection of adverse events)

- Patient's compliance

- Concomitant therapy

EVERY 3 MONTHS after the first 3 months of treatment until disease progression is
documented, intolerable toxicities occur, or the patient withdraws consent:

- Physical examination, including clinical disease assessment, ECOG performance status,
vital signs

- Radiographic disease assessment (using the same methods at screening)

- Hematology and biochemistry

- Safety evaluation (i.e. routine collection of adverse events)

- Concomitant therapy

- Patient's compliance

EVERY 6 MONTHS until disease progression is documented, intolerable toxicities occur, or the
patient withdraws consent:

- Complete radiographic assessment

- Assessment of the LVEF using the same method at screening

Afterwards:

EVERY 6 MONTHS after disease progression or trial discontinuation due to intolerable
toxicities or other reasons. Patients may receive other therapy following study
discontinuation. Patients will continue to be followed for survival for a minimum of 3
years.
Study TypeInterventional
Study PhasePhase 2
Study DesignAllocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment
ConditionMetastatic Breast Cancer
InterventionDrug: Lapatinib
1250 mg/ die, os
Drug: Metformin
1500 mg/die, os
Study Arm (s)
  • Other: ARM A - Lapatinib
    hormonal therapy + lapatinib (1250mg/die) until disease progression or extraordinary medical circumstances occur or intolerable toxicities occur or the patient withdraws consent.
  • Other: ARM B - Metformin
    Hormonal therapy + metformin until disease progression or extraordinary medical circumstances occur or intolerable toxicities occur or the patient withdraws consent.
  • Other: ARM C - Lapatinib + Metformin
    Hormonal therapy + lapatinib + metformin until disease progression or extraordinary medical circumstances occur or intolerable toxicities occur or the patient withdraws consent.

Recruitment Information[ + expand ][ + ]

Recruitment StatusTerminated
Estimated Enrollment32
Estimated Completion DateDecember 2013
Estimated Primary Completion DateDecember 2013
Eligibility Criteria
Inclusion Criteria:

1. Female patients with a histologically or cytologically confirmed adenocarcinoma of
the breast progressing from prior hormonal therapy

2. Receptor positive disease (ER+ and/or PgR+)

3. HER2 negative

4. Pre- and post-menopausal status

5. Documented disease progression after first-line hormone therapy

6. Age ≥18 years.

7. Measurable or evaluable metastatic disease

8. Life expectancy > 3 months

9. ECOG Performance Status < 1

10. Adequate bone marrow, liver, and renal function as assessed by the following
parameters:

- Hemoglobin > 9.0 g/dl

- Leucocytes count ≥ 3,000/mL

- Absolute neutrophil count (ANC) ≥ 1.500/mL

- Platelet count ≥ 100,000/mL

- Alanine aminotransferase (ALT) and aspartate aminotransferase (AST) ≤ 2.5 x ULN
(≤ 5 x ULN for patients with liver involvement)

- Albumine and total bilirubin ≤ 1.5 x ULN

- Prothrombin Time (PT) < 70 %

- Serum creatinine < 1.4 mg/ml, creatinine clearance > 70 ml/min

11. Normal Respiratory Function and Saturation level ≥ 90%

12. New York Hearth Association (NYHA) Classification ≤ 2 and baseline left ventricular
ejection fraction (LVEF)≥ 50%

13. Patients must be willing and able to sign a written informed consent.

Exclusion Criteria:

1. Previous or concomitant treatment with lapatinib and/or metformin

2. More than one line of prior hormone therapy for metastatic breast cancer.

3. More than two lines of prior chemotherapy for metastatic breast cancer

4. Unique location of disease local-regionally treated (surgery, radiotherapy , other)

5. Disease progression not documented or less than 30%

6. Metastatic disease defined as aggressive at investigator's judgement (e.g. visceral
disease more than >1/3 of involved parenchyma, symptomatic disease requiring
intensive supportive measures or therapies not allowed by protocol)

7. Patients with brain metastasis

8. Osteosclerotic bone metastasis as unique disease site

9. Pathological tumor markers as unique sign of progressive disease

10. Concomitant treatment with any other anticancer drugs (biphosphonates are permitted)

11. Serious, not solved or unstable toxicity from previous treatment

12. Diabetes mellitus Type I and Type II

13. Renal insufficiency (creatinine ≥ 1.4 mg/ml)

14. Malabsorption syndrome or diseases that significantly may alter gastroenteric
functions

15. Other serious illness or medical conditions judged by the investigator to be
clinically significant that may adversely affect patient's participation in the trial
or interfere with safety profile

16. Active clinically significant or uncontrolled infections (bacterial or viral)

17. Known history of unstable angina (angina symptoms at rest), cardiac ventricular
arrhythmias clinically significant, myocardial infarction, stroke or congestive heart
failure within 12 months prior to randomization

18. History of lactic acidosis

19. Evidence or symptoms of hepatic insufficiency

20. Chronic alcoholism

21. Concomitant treatment with amiodarone or any other agent that could interfere with
study drugs

22. Known or suspected hypersensitivity or allergy to lapatinib, metformin or used
excipients

23. Women who are pregnant or lactating

24. History of previous cancer, unless at low risk of relapse per investigator's
judgement
GenderFemale
Ages18 Years
Accepts Healthy VolunteersNo
ContactsNot Provided
Location CountriesItaly

Administrative Information[ + expand ][ + ]

NCT Number NCT01477060
Other Study ID NumbersCROLT/02
Has Data Monitoring CommitteeNo
Information Provided ByFondazione Michelangelo
Study SponsorFondazione Michelangelo
CollaboratorsNot Provided
Investigators Principal Investigator: Milvia Zambetti, MD Ospedale San Raffaele
Verification DateFebruary 2014

Locations[ + expand ][ + ]

Cliniche Gavazzeni S.p.A. - Humanitas Gavazzeni
Bergamo, BG, Italy, 24125
Fondazione Poliambulanza
Brescia, BS, Italy, 25124
Azienda Ospedaliera San Gerardo
Monza, MB, Italy, 20052
Azienda Ospedaliera "G. Salvini" - P.O. Garbagnate Milanese
Garbagnate Milanese, MI, Italy, 20020
Ospedale Civile Di Legnano
Legnano, MI, Italy, 20025
IRCCS Istituto Nazionale dei Tumori
Milano, MI, Italy, 20133
Azienda Ospedaliera Ospedale Ca' Granda
Milano, MI, Italy, 20162
IRCCS Fondazione San Raffaele Monte Tabor
Milano, MI, Italy, 20132
Fondazione Salvatore Maugeri Clinica del Lavoro e della Riabilitazione - U.O. Oncologia
Pavia, PV, Italy, 27100
Fondazione Salvatore Maugeri Clinica del Lavoro e della Riabilitazione - Reparto Riabilitazione Oncologica
Pavia, PV, Italy, 27100
Azienda Ospedaliera della Valtellina e della Valchiavenna - P.O. Sondrio
Sondrio, SO, Italy, 23100