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Association details:
Evidence:
Evidence Level:
Sensitive: B - Late Trials
New
Title:

Four-Year Follow-Up of Trastuzumab Plus Adjuvant Chemotherapy for Operable Human Epidermal Growth Factor Receptor 2–Positive Breast Cancer: Joint Analysis of Data From NCCTG N9831 and NSABP B-31

Excerpt:
Women randomly assigned to the trastuzumab arm had a significantly increased DFS (P < .001; stratified hazard ratio [HR], 0.52; 95% CI, 0.45 to 0.60; Fig 2A) and OS (P < .001; stratified HR, 0.61; 95% CI, 0.50 to 0.75; Fig 2B) compared with women randomly assigned to the control arm.
Secondary therapy:
ACT
DOI:
10.1200/JCO.2011.35.0868
Evidence Level:
Sensitive: C2 – Inclusion Criteria
New
Title:

Phase II study of Herceptin® alone or in combination with a taxane, as a first-line treatment for patients with metastatic breast cancer, who have relapsed after receiving Herceptin® in the adjuvant setting for HER2 positive early breast cancer

Excerpt:
...HER2 positive primary disease (3+ HER2 overexpression measured by immunohistochemistry, or HER2 amplification measured by FISH), confirmed by the central laboratory. ...
Evidence Level:
Sensitive: C2 – Inclusion Criteria
New
Title:

Phase II Trial to Validate Markers for a Response Evaluation of a Combined Therapy in Patients With HER2+ Breast Cancer

Excerpt:
...HER2 over-expressing tumor confirmed by: 3+ by Immuno-histochemistry (IHC) and/or HER2/neu gene amplification by fluorescence, chromogenic or silver in-situ hybridization [Fluorescent In-Situ Hybridization (FISH), Chromogenic In-Situ Hybridization (CISH) or Silver In-Situ Hybridization (SISH); > 6 HER2 gene copies per nucleus or a FISH, CISH or SISH test ratio (HER2 gene copies to chromosome 17 signals) of ≥ 2.0] 5....
Trial ID:
More C2 evidence
Evidence Level:
Sensitive: C3 – Early Trials
Source:
Title:

The benefits of trastuzumab in the treatment of HER2+ breast cancer as a function of exposure time

Published date:
01/20/2022
Excerpt:
The median time of survival (50%) was achieved only for patients with up to 63 days/no exposure to Trastuzumab regarding DFS (133.23 months)….The administration of trastuzumab improves survival in non-metastatic breast cancer patients, and is the main therapy for managing HER2-positive overexpressing/amplified tumours.
DOI:
https://doi.org/10.3332/ecancer.2022.1347
Evidence Level:
Sensitive: C3 – Early Trials
Source:
Title:

Pathologic and molecular responses to neoadjuvant trastuzumab and/or lapatinib from a phase II randomized trial in HER2-positive breast cancer (TRIO-US B07)

Published date:
11/17/2020
Excerpt:
In this multicenter, open-label, randomized phase II investigator-sponsored neoadjuvant trial with funding provided by Sanofi and GlaxoSmithKline (TRIO-US B07, Clinical Trials NCT00769470), participants with early-stage HER2-positive breast cancer (N = 128) were recruited...Participants were randomized to receive trastuzumab (T; N = 34), lapatinib (L; N = 36), or both (TL; N = 58) as HER2-targeted therapy...we observed similar pCR rates between T (47%, 95% confidence interval [CI] 30-65%) and TL (52%, 95% CI 38-65%), and a lower pCR rate with L (25%, 95% CI 13-43%)...Higher-level amplification of HER2 and hormone receptor (HR)-negative status were associated with a higher pCR rate.
DOI:
10.1038/s41467-020-19494-2
Trial ID:
Evidence Level:
Sensitive: C3 – Early Trials
Source:
Title:

P55: The Degree of HER2 Protein Overexpression and Gene Amplification is Associated with the Extent of Response to Neoadjuvant Therapy

Published date:
08/17/2020
Excerpt:
For patients with HER2+ breast cancer who undergo NAT, the degree of HER2 protein overexpression and gene amplification were associated with response to NAT.
Evidence Level:
Sensitive: C3 – Early Trials
Source:
Title:

Correlation between HER2 amplification level and response to neoadjuvant treatment with trastuzumab and chemotherapy in HER2 positive breast cancer.

Published date:
05/28/2020
Excerpt:
Pathological Complete Response (pCR) (Miller-Payne grading system) was obtained in 58% of the patients whose tumors showed amplification. No pCR was obtained in the 8 patients whose tumors were negative by FISH (not amplified)....We also demonstrated an association between the HER2 amplification level (both ratios and numbers of HER2 signals) and a trend toward improved disease free survival (DFS) (p = 0.451 and p= 0.619, respectively).
DOI:
10.1200/JCO.2020.38.15_suppl.e12641
Evidence Level:
Sensitive: C3 – Early Trials
New
Source:
Title:

ERBB2 and PTPN2 g ene copy numbers as prognostic factors in HER2-positive metastatic breast cancer treated with trastuzumab

Excerpt:
Patients with tumours displaying a high-grade ERBB2 (HER2) amplification level of ≥6 copies had a significantly improved overall survival hazard ratio [(HR)=0.4; 95%, confidence interval (CI): 0.2-0.9] and progression-free survival (HR=0.3; 95% CI: 0.1-0.7) compared with patients with tumours harbouring fewer ERBB2 copies.
DOI:
10.3892/ol.2019.9998