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Clinical Trial Details — Status: Recruiting

Administrative data

NCT number NCT02560311
Other study ID # KEK-ZH-Nr.2015-0050
Secondary ID
Status Recruiting
Phase N/A
First received September 2, 2015
Last updated September 24, 2015
Start date December 2014
Est. completion date February 2016

Study information

Verified date September 2015
Source University of Zurich
Contact Konstantin J Dedes, Dr.med.
Phone +41 44 255 11 11
Email konstantin.dedes@usz.ch
Is FDA regulated No
Health authority Switzerland: Ethikkommission
Study type Observational

Clinical Trial Summary

The aim of this study is to analyze cases of human epidermal growth factor receptor (HER) 2-positive metastatic breast cancer (MBC) of the last 10 years at the University Hospital of Zurich to assess the efficacy of the treatment with trastuzumab in HER2-positive MBC and to find out associations between different variables and the outcome. The aim is to find out probable prognostic factors and patterns of disease progression. Prognostic factors could optimize treatment approaches and result in a delay of disease progression.


Description:

Human epidermal growth factor (HER2) is a receptor tyrosine kinase and regulates diverse functions in normal cells such as growth, differentiation and survival of cells. In 25-30 per cent of breast cancer HER2 gene is amplified, what result in abnormally high levels of encoded HER2 protein in malignant cells. Overexpression or amplification of HER2 is associated with an aggressive form of breast cancer seen by significantly shortened disease-free survival and overall survival.

Trastuzumab, a humanized monoclonal antibody against the extracellular domain of HER2, inhibits the growth of breast tumor cells by receptor internalization, inhibition of cell-cycle progression and recruitment of immune-effector cells. Trastuzumab, as the first anti-HER2 therapy, is approved since 1998 in the United States and since 2000 in European countries for the treatment of HER2-overexpressing metastatic breast cancer (MBC). Single therapy as well as combination with chemotherapy has significantly improved the outcome of these women. Shown by longer time to disease progression, longer duration of response, lower rate of death at 1 year, longer survival and a 20 per cent reduction in the risk of death.

But still is little known about the long-term outcome nor patterns of disease progression of HER2-positive MBC. A few case reports showed a prolonged complete remission in HER2-positive MBC under an anti-HER2 treatment (trastuzumab, T-DM1, pertuzumab). These cases had some common characteristics such as negative hormone receptor status and metastasis to the live. Another hypothesis is a worse prognosis for patients with early development of CNS metastases.


Recruitment information / eligibility

Status Recruiting
Enrollment 100
Est. completion date February 2016
Est. primary completion date September 2015
Accepts healthy volunteers No
Gender Female
Age group N/A and older
Eligibility Inclusion Criteria:

- Received at least 1 dose of trastuzumab in metastatic setting at the University hospital of Zurich from 01/2004 to 12/2014.

- HER2+ status confirmed by immunohistochemistry (IHC) 3+ or fluorescence in situ hybridization (FISH) = 2.

Exclusion Criteria:

Study Design

Observational Model: Cohort, Time Perspective: Retrospective


Intervention

Other:
observation


Locations

Country Name City State
Switzerland UniversitätsSpital Zürich, Klinik für Gynäkologie Zurich

Sponsors (1)

Lead Sponsor Collaborator
University of Zurich

Country where clinical trial is conducted

Switzerland, 

Outcome

Type Measure Description Time frame Safety issue
Primary Time to disease progression time from commencing trastuzumab (or other anti-HER2 therapy) to the time of disease progression or death up to 120 months No
Secondary Response duration up to 120 months No
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