E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Previously Untreated Overexpressing metastasic breast cancer |
|
E.1.1.1 | Medical condition in easily understood language |
|
E.1.1.2 | Therapeutic area | Diseases [C] - Cancer [C04] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 20.0 |
E.1.2 | Level | PT |
E.1.2 | Classification code | 10065430 |
E.1.2 | Term | HER-2 positive breast cancer |
E.1.2 | System Organ Class | 10029104 - Neoplasms benign, malignant and unspecified (incl cysts and polyps) |
|
E.1.3 | Condition being studied is a rare disease | No |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
Compare efficacy of HLX02 versus EU-sourced Herceptin® in combination with docetaxel using overall response rate (ORR) up to Week 24 (ORR24) after up to 8 cycles of treatment to demonstrate clinical bioequivalence. |
|
E.2.2 | Secondary objectives of the trial |
• evaluate safety, tolerability, and immunogenicity of HLX02 and EU-sourced Herceptin® in combination with docetaxel.
• compare efficacy of HLX02 versus EU-sourced Herceptin® in combination with docetaxel, in terms of duration of response (DoR), clinical benefit rate (CBR), disease control rate (DCR), progression-free survival (PFS) up to 12 months, and OS at 12, 24, and 36 months.
• measure exposure to trastuzumab following HLX02 or EU-sourced Herceptin®.
• exploratory objective: exploratory population pharmacokinetic (PopPK) analysis.
|
|
E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
• Voluntarily agreed to participate and given written informed consent
• Male or female ≥18 years of age on day of signing the informed consent form
• Histologically or cytologically confirmed adenocarcinoma of the breast
• Recurrent disease not amenable to curative surgery or radiation therapy, or metastatic disease with an indication for a taxane-containing therapy
• Availability of formalin-fixed paraffin-embedded tissue block from the primary tumor, or a metastatic lesion, to confirm HER2-positivity by the central laboratory, based on FISH amplification ratio ≥2.0 or IHC score 3+, and for hormone status (ER/PgR) determination (local or central laboratory). If not possible, a fresh biopsy is required
• No prior systemic anticancer agent such as chemotherapy, biological or targeted agent for metastatic disease with the exception of hormonal therapy.
• For patients with recurrent disease, prior neo-/adjuvant therapy containing trastuzumab and/or lapatinib must have been stopped at least 12 months before the diagnosis of recurrent (local or metastatic) disease (i.e. a disease free interval of ≥12 months). If trastuzumab /lapatinib was not used, prior neo-/adjuvant therapy with a taxane must have been stopped at least 6 months before the diagnosis of recurrent (local or metastatic) disease (i.e. a disease free interval of ≥6 months). If only other cytotoxics were given, they must be stopped at least 4 weeks before randomization. Any hormonal therapy must be stopped at the time of the ICF signature (at least 2 weeks before randomization)
• Measurable disease
• Eastern Cooperative Oncology Group performance status of 0-1
• Left ventricular ejection fraction (LVEF) within institutional range of normal at baseline (within 42 days before randomization) as determined by either echocardiography (ECHO) or multigated acquisition (MUGA) scan
• Adequate hematologic, hepatic and renal function
• Estimated life expectancy ≥3 months
• Female patients are eligible to enter and participate in the study if they are of:
- Non-childbearing potential
- Childbearing potential, have a negative serum pregnancy test at Screening, are not breast feeding, and use highly-effective or acceptable contraceptive measures before study entry and throughout the study until 7 months after the last investigational/comparator product administration.
• Male patients with partners of childbearing potential are eligible to enter and participate in the study if they are willing to use highly-effective or acceptable contraceptive measures before study entry and
throughout the study until 7 months after the last IP/comparator administration |
|
E.4 | Principal exclusion criteria |
• Previously- or currently-treated metastatic breast cancer with the exception of hormonal therapy
• Known brain metastasis or other Central nervous system (CNS) metastasis that is either symptomatic or untreated. CNS metastases that have been treated by complete resection and/or radiotherapy demonstrating stability or improvement are not an exclusion criterion provided they are stable as shown by computed tomography (CT) scan for at least 4 weeks before Screening without evidence of cerebral edema and no requirements for corticosteroids or anticonvulsants
• Underlying medical conditions or current severe, uncontrolled systemic disease that, in the Investigator’s opinion, will make the administration of study drug hazardous. A major surgical procedure within 4 weeks prior to enrolment or anticipation of the need for major surgery during the course of study
• Current uncontrolled hypertension or unstable angina
• History of chronic heart failure of any New York Heart Association criteria, or left ventricular hypertrophy. Current serious cardiac arrhythmia requiring treatment (except atrial fibrillation, paroxysmal supraventricular tachycardia) or clinically significant conduction defects as seen on electrocardiogram. History of myocardial infarction within 6 months of randomization. History of LVEF decline to below 50% during or after prior trastuzumab neo-adjuvant or adjuvant therapy. Significant cardiac murmurs either on examination or ECHO
• History of prior exposure to doxorubicin >360 mg/m² (or equivalent)
• Use of oral, injected or implanted hormonal methods of contraception
• Known hypersensitivity to any of the study drugs
• Residual non-hematologic toxicity ≥ Grade 2 from prior therapy
|
|
E.5 End points |
E.5.1 | Primary end point(s) |
ORR24, calculated as the proportion of patients with a best response of complete response (CR) or partial response (PR) from first assessment up to Week 24 according to RECIST 1.1. |
|
E.5.1.1 | Timepoint(s) of evaluation of this end point |
|
E.5.2 | Secondary end point(s) |
Secondary Efficacy Endpoints:
• ORR at Week 6, 12, 18, and 24 by CIR
• DoR, defined as the time from first documentation of CR or PR to the first documentation of progression. After Week 24, assessments are made by the Investigator
• DCR, defined as the proportion of patients who achieve CR, PR, or stable disease (SD) of at least 12 weeks
• CBR, defined as the proportion of patients who achieve CR, PR, or durable SD (SD ≥24 weeks)
• PFS up to 12 months, defined as the probability of being alive without documented progression up to 12 months after randomization, calculated using the Kaplan-Meier method
• Overall survival at 12, 24, and 36 months, defined as the probability of being alive 12, 24, and 36 months after randomization, calculated using the Kaplan-Meier method
|
|
E.5.2.1 | Timepoint(s) of evaluation of this end point |
Secondary Efficacy Endpoints: as given above
|
|
E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | No |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | Yes |
E.6.7 | Pharmacodynamic | No |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
E.6.10 | Pharmacogenetic | No |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | Yes |
E.6.13.1 | Other scope of the trial description |
|
E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | No |
E.7.3 | Therapeutic confirmatory (Phase III) | Yes |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | Yes |
E.8.1.1 | Randomised | Yes |
E.8.1.2 | Open | No |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | Yes |
E.8.1.5 | Parallel group | Yes |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | No |
E.8.2.3 | Other | Yes |
E.8.2.3.1 | Comparator description |
|
E.8.2.4 | Number of treatment arms in the trial | 2 |
E.8.3 |
The trial involves single site in the Member State concerned
| No |
E.8.4 | The trial involves multiple sites in the Member State concerned | Yes |
E.8.4.1 | Number of sites anticipated in Member State concerned | 3 |
E.8.5 | The trial involves multiple Member States | No |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | Yes |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned |
China |
Philippines |
Poland |
Ukraine |
|
E.8.7 | Trial has a data monitoring committee | No |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
|
It will occur after all randomized patients have either completed the 12 month treatment period, including the Safety Follow-up Visit (i.e. 52 weeks in total), or stopped treatment within that 12-month period because of disease progression, excessive toxicity, Investigator’s judgment, withdrawal of consent or start of a new anticancer therapy. |
|
E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 1 |
E.8.9.1 | In the Member State concerned months | 6 |
E.8.9.1 | In the Member State concerned days | |
E.8.9.2 | In all countries concerned by the trial years | 2 |
E.8.9.2 | In all countries concerned by the trial months | 2 |