Pertuzumab in First Line Treatment of HER2-positive Metastatic Breast Cancer Patients

Metastatic Breast Cancer Clinical Trial

— PerFECT  

Official title:

Pertuzumab in First Line Treatment of HER2-positive Metastatic Breast Cancer Patients: A Cohort Study of Patients Treated Either With Docetaxel and Trastuzumab or Docetaxel, Trastuzumab and Pertuzumab

Clinical Trial Details — Status: Active, not recruiting

Administrative data

• NCT number: NCT02642458
• Other study ID #: SEN2015-02
• Status: Active, not recruiting
• Start date: March 2016
• Est. completion date: July 2020

Study information

• Verified date: January 2020
• Source: University Hospital Tuebingen
• Contact: n/a
• Is FDA regulated: No
• Study type: Observational

Clinical Trial Summary

Despite the clear benefit of a combination therapy of pertuzumab plus trastuzumab plus docetaxel when compared with a combination therapy of trastuzumab and docetaxel the study populations of the CLEOPATRA trial might be slightly different from a patient population, in which pertuzumab, plus trastuzumab plus chemotherapy or trastuzumab plus chemotherapy are applied in routine clinical practice.

This non-interventional approach aims to confirm the clinically relevant outcomes shown in the phase III CLEOPATRA study in patients with advanced HER2-positive breast cancer in routine practice. Docetaxel is recommended as chemotherapy, however, any treatment choice or change in regimen is performed at the discretion of the treating physician.

Data on efficacy, safety, tolerability and quality of life will be documented for this purpose. Following the recommendations as laid down in guidelines for treatment of breast cancer, the quality of life of patients will be assessed on a regular basis.

Description:

Breast cancer is the commonest cancer in women worldwide with an estimated 1.4 million new diagnoses in 2008 and 1.6 million cases estimated for 2015. In 2008 breast cancer was responsible for approximately 23% of all new cancer diagnoses in women. It is also the commonest cause of cancer deaths in women worldwide: in 2008 some 458,500 women died from breast cancer, with a further 538,500 projected for 2015.

In developed countries most breast cancers (in 94%-95% of patients in the EU and USA) are diagnosed while the tumour is confined to the breast - with or without locoregional lymph node involvement. At this early breast cancer (EBC) stage the disease is normally operable and can be treated curatively. Metastatic breast cancer (MBC) is less common and occurs in 5%-6% of newly diagnosed cases. Despite advances in the treatment of EBC approximately 30% of women develop local recurrence or metastases. In the USA and Europe patients with MBC survive for a mean 24 months and have a 5 year survival rate of 18%-23%.

Between 18% and 20% of breast cancers show HER2 amplification and/or HER2 receptor overexpression. Such patients have a poor prognosis on conventional treatment. The HER2 receptor is a protein belonging to the epidermal growth factor receptor (EGFR) family. The HER family consists of four structurally similar receptors - HER1/EGFR, HER2, HER3, HER4 - and regulates cell processes such as differentiation, invasion, proliferation, neoangiogenesis, survival and metastatic potential. In breast cancer HER2 positivity is associated with more aggressive tumours, higher relapse rates, lower and shorter treatment response and increased mortality.

Systemic treatment options in MBC include chemotherapy along with hormonal and targeted approaches. Tumor properties and patient-specific factors determine the choice of treatment.

In HER2-positive MBC trastuzumab for many years was the reference first-line treatment. Treatment-naive HER2-positive patients with MBC treated with trastuzumab and taxane chemotherapy showed significantly longer median time to progression (TTP), higher objective response rates (ORR) and longer median response and median survival than patients treated with chemotherapy alone. Although trastuzumab has proved effective in combination with chemotherapy in the first-line treatment of patients with HER2-positive MBC, approximately 50% of patients experience disease progression within one year of starting treatment. Mean survival in HER2-positive patients in the pivotal studies of trastuzumab in combination with a taxane was 24.8 and 31.2 months.

Therefore there is high medical need for novel HER2-targeted therapies to improve survival outcomes in patients with HER2-positive MBC.

An essential step in activating downstream signalling pathways is homo or heterodimerisation of the HER2 receptor with the other member of the HER family. Inhibition of HER2 dimerisation inhibits the downstream signalling pathways that mediate cancer cell proliferation and survival. Pertuzumab, a humanised monoclonal antibody, is the first HER2 dimerisation inhibitor (HDI). It binds specifically to the extracellular dimerisation domain of the HER2 receptor, thereby inhibiting ligand-dependent heterodimerisation of the receptor with other HER family members. Pertuzumab actually inhibits ligand-activated intracellular signal transduction in two main signalling pathways - the mitogen-activated protein kinase (MAPK) pathway and the phosphoinositide-3-kinase (PI3K) pathway. Inhibition of these signalling pathways can arrest cell growth and cause apoptosis. Pertuzumab also mediates antibody-dependent cell-mediated cytotoxicity (ADCC). Pertuzumab and trastuzumab bind to different epitopes on the HER2 receptor. Their mechanisms of action complement each other to ensure more comprehensive blockade of HER2-dependent signalling pathways.

The phase III, multicentre, randomised, double-blind and placebo-controlled clinical CLEOPATRA trial compared pertuzumab plus trastuzumab plus docetaxel vs placebo plus trastuzumab plus docetaxel in 808 patients with HER2-positive metastatic, locally recurrentor inoperable breast cancer. Patients may have received one hormonal treatment for metastatic breast cancer before randomization. Patients may have received adjuvant or neoadjuvant chemotherapy with or without trastuzumab before randomization, with an interval of at least 12 months between completion of the adjuvant or neoadjuvant therapy and the diagnosis of metastatic breast cancer. Randomised patients were stratified by previous treatment status (with or without previous adjuvant/neoadjuvant therapy) and geographic location (Europe, North America, South America and Asia). Pertuzumab was given intravenously at a starting dose of 840 mg followed by a dose of 420 mg every 3 weeks. Trastuzumab was given intravenously at a starting dose of 8 mg/kg followed by a dose of 6 mg/kg every 3 weeks. Patients were treated with pertuzumab plus trastuzumab until disease progression, withdrawal of consent to participation or the development of uncontrollable toxicity. Docetaxel was given as an intravenous infusion at a starting dose of 75 mg/m² every 3 weeks for at least 6 cycles. If the starting dose was well-tolerated, the dose of docetaxel could be increased up to 100 mg/m² at the investigator's discretion.

The primary study endpoint was progression-free survival (PFS), assessed by an independent review facility (IRF) and defined as the interval between randomisation and disease progression or death (from any cause), where death occurred within 18 weeks of the last disease assessment. The secondary endpoints were overall survival (OS), (investigator-rated) PFS, objective response rate (ORR), duration of response and time to progression (TTP).

Demographic characteristics were evenly balanced (mean age was 54 years, most [59%] were Caucasian and all but two were female). In each treatment group approximately half the patients had hormone (estrogen or progesterone) receptor-positive disease and had received previous adjuvant or neoadjuvant therapy (184 patients [45.8%] in the pertuzumab group vs 192 patients [47.3%] in the placebo group). Most (37.3% and 40.4%, respectively) had previously received anthracyclines and approximately 10% had previously received trastuzumab (11.7% and 10.1%). A total 43% of patients from both groups had received prior radiotherapy. The mean baseline left ventricular ejection fraction (LVEF) was 64.8% in the pertuzumab group and 65.6% in the placebo group (median 65.0%, range 50%-88% in the two groups).

The CLEOPATRA study showed statistically significant improvement of IRF-rated PFS in the pertuzumab group vs placebo (hazard ratio [HR]=0.62; 95% CI=0.51; 0.75, p<0.0001) and an increase in median PFS of 6.1 months. Median PFS was 18.5 months in the pertuzumab group vs 12.4 months in the placebo group. Moreover, CLEOPATRA showed statistically significant improvement of overall survival in the pertuzumab group vs placebo (hazard ratio [HR]=0.68; 95% CI=0.56; 0.84, p<0.0002) and an increase in median OS of 15.7 months. Median OS was 56.5 months in the pertuzumab group vs 40.8 months in the placebo group.

Despite the clear benefit of a combination therapy of pertuzumab plus trastuzumab plus docetaxel when compared with a combination therapy of trastuzumab and docetaxel the study populations of the CLEOPATRA study might be slightly different from a patient population, in which pertuzumab, plus trastuzumab plus docetaxel or trastuzumab plus docetaxel are applied in routine clinical practice.

This non-interventional approach aims to confirm the clinically relevant outcomes shown in the phase III CLEOPATRA study in patients with advanced HER2-positive breast cancer in routine practice. Data on efficacy, safety, tolerability and quality of life will be documented for this purpose.

Recruitment information / eligibility

• Status: Active, not recruiting
• Enrollment: 300
• Est. completion date: July 2020
• Est. primary completion date: March 2020
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years to 99 Years

Eligibility

Inclusion Criteria:

• Adult breast cancer patients (age =18 years)

• Patients with metastatic or locally advanced, unresectable HER2-positive breast cancer proven by clinical measures (i.e. standard imaging) in first line treatment (Locally recurrent disease must not be amenable to resection with curative intent)

• Patients who are eligible for treatment with trastuzumab plus chemotherapy or pertuzumab plus trastuzumab plus chemotherapy as first line therapy, administered intravenously in a three weekly frequency, according to each center's medical practice. The first line anti-HER2 treatment must not have started more than 28 days before study entry.

• No prior chemotherapy or HER2-directed therapy for metastatic or locally advanced disease, prior therapy for early breast cancer (eBC) is allowed

• Signed informed consent prior to onset of documentation.

Exclusion Criteria:

• Patients who are not eligible for observation due to severe comorbidities or unavailability according to the treating physician

Related Conditions & MeSH terms

• Breast Neoplasms
• Metastatic Breast Cancer

Locations

Country	Name	City	State
Germany	Onkokom GbR	Altötting	Bayern
Germany	MVZ Amberg	Amberg	Bayern
Germany	Klinikum Augsburg Frauenklinik	Augsburg	Bayern
Germany	MediOnko-Institut GbT	Berlin
Germany	MarienHospital Onkologische Praxis	Bonn	Nordrhein-Westfalen
Germany	Marienhospital Bottrop gGmbH	Bottrop	Nordrhein-Westfalen
Germany	Onkologisch-Hämatologische Schwerpunktpraxis	Bremen
Germany	Klinikum Chemnitz gGmbH Frauenklinik	Chemnitz	Sachsen
Germany	Klinikum Darmstadt, Frauenklinik	Darmstadt	Hessen
Germany	Onkologische Gemeinschaftspraxis Dresden	Dresden	Sachsen
Germany	Rottal-Inn-Kliniken GmbH	Eggenfelden	Bayern
Germany	Universitätsfrauenklinik Erlangen	Erlangen	Bayern
Germany	Universitätsklinikum Essen	Essen	Nordrhein-Westfalen
Germany	Klinikum für Frauenheilkunde und Geburtshilfe Esslingen	Esslingen	Baden-Württemberg
Germany	Zentrum für Hämatologie und Onkologie Bethanien	Frankfurt	Hessen
Germany	MVZ Onkologische Kooperation Harz Onkologische Schwerpunktpraxis	Goslar	Hessen
Germany	Gemeinschaftspraxis	Halle (Saale)	Sachsen-Anhalt
Germany	NCT Heidelberg	Heidelberg	Baden-Württemberg
Germany	Onkologische Schwerpunktpraxis Heidelberg	Heidelberg	Baden-Württemberg
Germany	Schwerpunktpraxis für Hämatologie und Onkologie Hansen/Reeb/Pfitzner-Dempfle/Stehle	Kaiserslautern	Rheinland-Pfalz
Germany	Frauenklinik des Städtischen Klinikums	Karlsruhe	Baden-Württemberg
Germany	St. Vicentius Kliniken Karlsruhe gAG Frauenklininik	Karlsruhe	Baden-Württemberg
Germany	Institut für Versorgungsforschung in der Onkologie	Köln	Nordrhein-Westfalen
Germany	Klinik und Poliklinik für Frauenheilkunde und Geburtshilfe des Universitätsklinikums Köln Brustzentrum	Köln	Nordrhein-Westfalen
Germany	Hämatologisch-Onkologische Praxis	Kronach	Bayern
Germany	Ortenau Klinikum Lahr-Ettenheim	Lahr	Baden-Württemberg
Germany	Universitäres Krebszentrum Leipzig	Leipzig	Sachsen
Germany	Klinikum Mannheim, Universitäts-Frauenklinik	Mannheim	Baden-Württemberg
Germany	Praxisklinik am Rosengarten	Mannheim	Baden-Württemberg
Germany	Hochschulklinikum der Med. Hochschule Brandenburg	Neuruppin	Brandenburg
Germany	Klinikum Nürnberg AöR	Nürnberg	Bayern
Germany	Agaplesion Diakonieklinikum Rotenburg/Wümme gGmbH	Rotenburg	Niedersachsen
Germany	g.SUND Gynäkologie Kompetenzzentrum	Stralsund	Brandenburg
Germany	Universitätsfrauenklinik Tübingen	Tübingen	Baden-Württemberg
Germany	Gemeinschaftspraxis f. Hämatologie u. Onkologie	Westerstede	Niedersachsen
Germany	Frauenklinik Wetzlar	Wetzlar	Hessen
Germany	Facharztzentrum am Schloß	Wolfenbüttel	Niedersachsen

Sponsors (1)

Lead Sponsor	Collaborator
University Hospital Tuebingen

Country where clinical trial is conducted

Germany, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	progression free survival rate	The primary objective of this study is to assess the progression free survival rate at month 12 for both treatment cohorts in routine clinical practice treated with either pertuzumab plus trastuzumab plus docetaxel or trastuzumab plus docetaxel.	At 12 months or month 36
Secondary	Progression free survival	Progression free survival (PFS) is defined as the time interval from start of therapy until progression proven with clinical measures according to expertise and daily clinical routine or death from any cause, whichever comes first.	Timepoint of progression or month 36
Secondary	Overall response rate	Overall response rate (ORR): Rate of complete (CR) and partial responses (PR) in patients. Response to treatment (CR, PR, SD, and PD) will be assessed by the treating physician and evaluated according to expertise and daily clinical routine. Underlying method of response assessment will be captured.	Timepoint of progression or month 36
Secondary	Quality of life (EORTC QLQ-C30)	Quality of life (QoL) will be assessed by the EORTC QLQ-C30 (Version 3.0) within the first 12 months of first line treatment either with docetaxel and trastuzumab or docetaxel, trastuzumab and pertuzumab. The minimum target return rate for PRO questionnaires is 70% defined as at least 70% of patients having completed the PRO questionnaires at all collection time points.	At 12 months
Secondary	Incidence of adverse events and serious adverse events will be documented	Incidence of adverse events and serious adverse events will be reported according to NCI Common Toxicity Criteria Version 4.03.	up 36 month
Secondary	Quality of life (EORTC QLQ-BR23)	Quality of life (QoL) will be assessed by the EORTC QLQ-BR23 (Version 1.0) within the first 12 months of first line treatment either with docetaxel and trastuzumab or docetaxel, trastuzumab and pertuzumab. The minimum target return rate for PRO questionnaires is 70% defined as at least 70% of patients having completed the PRO questionnaires at all collection time points.	At 12 months