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HER2+ breast cancer case studies

Explore breast cancer case studies, developed to support you with building confidence in treatment decision-making.

Indications for PHESGO (pertuzumab/trastuzumab), Kadcyla (trastuzumab emtansine), Herceptin (trastuzumab), and PERJETA (pertuzumab), can be found at the end of this page.

Click for the following Prescribing Information and details of enhanced pregnancy prevention programme for relevant products: PHESGO, Kadcyla, Herceptin, PERJETA.
eBC case studies

Each case follows a patient journey, highlighting important considerations at every stage, from patient characteristics to final histology.

Developed by Roche in collaboration with a UK Consultant Clinical Oncologist specialising in breast cancer.

These case studies are fictional and the images used are models. Please note, every patient will respond differently to their treatment in terms of clinical response and any side effects, please refer to the Summary of Product Characteristics for details.
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Indications and prescribing information

In eBC, PHESGO is indicated for use in combination with chemotherapy in:

  • The neoadjuvant treatment of adult patients with HER2+, locally advanced, inflammatory, or early-stage breast cancer at high risk of recurrence​
  • The adjuvant treatment of adult patients with HER2+ eBC at high risk of recurrence​

In mBC, PHESGO is indicated for use in combination with docetaxel for adult patients with HER2+ metastatic or locally recurrent unresectable breast cancer, who have not received previous anti-HER2 therapy or chemotherapy for their metastatic disease.

PHESGO Prescribing Information and details of the enhanced pregnancy prevention programme

Kadcyla, as a single agent, is indicated for the adjuvant treatment of adult patients with HER2+ eBC who have residual invasive disease, in the breast and/or lymph nodes, after neoadjuvant taxane-based and HER2-targeted therapy.

Kadcyla, as a single agent, is indicated for the treatment of adult patients with HER2+, unresectable locally advanced or mBC who previously received trastuzumab and a taxane, separately or in combination. Patients should have either received prior therapy for locally advanced or metastatic disease, or developed disease recurrence during or within six months of completing adjuvant therapy.

Kadcyla Prescribing Information

Herceptin is indicated for the treatment of adult patients with HER2+ eBC:

  • Following surgery, chemotherapy (neoadjuvant or adjuvant) and radiotherapy (if applicable)
  • Following adjuvant chemotherapy with doxorubicin and cyclophosphamide, in combination with paclitaxel or docetaxel
  • In combination with adjuvant chemotherapy consisting of docetaxel and carboplatin
  • In combination with neoadjuvant chemotherapy followed by adjuvant Herceptin therapy, for locally advanced (including inflammatory) disease or tumours >2 cm in diameter


Herceptin is indicated for the treatment of adult patients with HER2+ mBC:

  • As monotherapy for the treatment of those patients who have received at least two chemotherapy regimens for their metastatic disease. Prior chemotherapy must have included at least an anthracycline and a taxane unless patients are unsuitable for these treatments. Hormone receptor-positive patients must also have failed hormonal therapy, unless patients are unsuitable for these treatments
  • In combination with paclitaxel for the treatment of those patients who have not received chemotherapy for their metastatic disease and for whom an anthracycline is not suitable
  • In combination with docetaxel for the treatment of those patients who have not received chemotherapy for their metastatic disease
  • In combination with an aromatase inhibitor for the treatment of postmenopausal patients with hormone receptor-positive mBC, not previously treated with trastuzumab

Herceptin should only be used in patients with metastatic or early breast cancer whose tumours have either HER2 overexpression or HER2 gene amplification as determined by an accurate and validated assay.

Herceptin Prescribing Information

In eBC, PERJETA is indicated for use in combination with trastuzumab and chemotherapy in:

  • The neoadjuvant treatment of adult patients with HER2+, locally advanced, inflammatory, or early-stage breast cancer at high risk of recurrence
  • The adjuvant treatment of adult patients with HER2+ eBC at high risk of recurrence
     

In mBC, PERJETA is indicated for use in combination with trastuzumab and docetaxel in adult patients with HER2+ metastatic or locally recurrent unresectable breast cancer, who have not received previous anti-HER2 therapy or chemotherapy for their metastatic disease.

PERJETA Prescribing Information
Abbreviations:

BMI, body mass index; DCIS, ductal carcinoma in situ; eBC, early breast cancer; ECOG, Eastern Cooperative Oncology Group; ER, oestrogen receptor; FEC, 5-fluorouracil, epirubicin + cyclophosphamide; HER2, human epidermal growth factor receptor 2; HR, hormone receptor; IHC, immunohistochemistry; ISH, in situ hybridisation; IV, intravenous; LA, locally advanced; LVEF, left ventricular ejection fraction; mBC, metastatic breast cancer; pCR, pathological complete response; SC, subcutaneous.
References:
  1. Roche. PHESGO Summary of Product Characteristics.
  2. Roche. Kadcyla Summary of Product Characteristics.
  3. Roche. Herceptin Summary of Product Characteristics.
  4. Roche. PERJETA Summary of Product Characteristics.
Reporting suspected adverse reactions after authorisation of the medicinal product is important. It allows continued monitoring of the benefit/risk balance of the medicinal product. Adverse events should be reported. Reporting forms and information can be found at www.mhra.gov.uk/yellowcard. You can also report via the free Yellow Card app available from the Apple App Store or Google Play Store. Adverse events should also be reported to Roche Products Ltd. Please contact Roche Drug Safety Centre by emailing welwyn.uk_dsc@roche.com or calling +44 (0)1707 367554. Adverse reactions should be reported by brand name and batch number.
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