Trastuzumab deruxtecan [TRAD1]

For treating over-expressed HER2 positive unresectable locally advanced or metastatic breast cancer in patients who have received 2 or more anti-HER2 therapies and who have received trastuzumab emtansine in the advanced/metastatic disease setting where the following criteria have been met:

1. This application for trastuzumab deruxtecan for the treatment of unresectable locally advanced or metastatic breast cancer is being made by and the first cycle of trastuzumab deruxtecan will be prescribed by a consultant or internally accredited oncology specialty trainee, specifically trained and assessed in the use of systemic anti-cancer therapy.
2. The patient has unresectable locally advanced or metastatic breast cancer, which is histologically documented as HER2 3+ by immunohistochemistry and/or has a HER2 amplification ratio of >=2.0 by in situ hybridisation.
3. Whether this patient received a HER2-targeted neoadjuvant regimen and if so its nature. Please tick which option applies to this patient:

• the patient was not treated with a HER2-targeted neoadjuvant regimen
• the patient was treated with a HER2-targeted neoadjuvant regimen which contained both pertuzumab and trastuzumab
• the patient was treated with a HER2-targeted neoadjuvant regimen which contained trastuzumab as the sole HER2-targeted agent 4.Whether the patient received a HER2-targeted adjuvant regimen and if so its nature. Please tick which option applies to this patient:
• the patient was not treated with a HER2-targeted adjuvant regimen
• the patient was treated with a HER2-targeted adjuvant regimen which contained both pertuzumab and trastuzumab
• the patient was treated with a HER2-targeted adjuvant regimen which contained trastuzumab as the sole HER2-targeted agent
• the patient was treated with a HER2-targeted adjuvant regimen which contained trastuzumab emtansine 5.Whether the patient received a HER2-targeted regimen for locally advanced/metastatic disease which included both pertuzumab and trastuzumab. Please tick which option applies to this patient:
• the patient was not treated with a HER2-targeted regimen for locally advanced/metastatic disease which included both pertuzumab and trastuzumab
• the patient was treated with a HER2-targeted regimen for locally advanced/metastatic disease which included both pertuzumab and trastuzumab 6.whether the patient received a HER2-containing regimen for locally advanced/metastatic disease which included trastuzumab as the sole HER2-targeted agent. Please tick which option applies to this patient:
• the patient was not treated with a HER2-targeted regimen for locally advanced/metastatic disease which included trastuzumab as the sole HER2-targeted agent
• the patient was treated with a HER2-targeted regimen for locally advanced/metastatic disease which contained trastuzumab as the sole HER2-targeted agent 7.The patient has previously been treated with trastuzumab emtansine for advanced/metastatic disease and is now either resistant or refractory to trastuzumab emtansine or had to discontinue trastuzumab emtansine due to intolerance.

8. The patient has received two or more anti-HER2 therapies which must have included trastuzumab and trastuzumab emtansine. Please tick below how many anti-HER2 therapies this patient has received in all clinical settings (neoadjuvant, adjuvant and locally advanced/metastatic indications; eg a treatment pathway of neoadjuvant pertuzumab plus trastuzumab regimen followed by adjuvant trastuzumab and then a 1st relapse treated with a pertuzumab plus trastuzumab regimen and a 2nd relapse treated with trastuzumab emtansine counts as 4 anti-HER2 therapies): 2 anti-HER2 therapies 3 anti-HER2 therapies 4 anti-HER2 therapies 5 or more anti-HER2 therapies
9. The patient has an ECOG performance status of 0 or 1.
10. The status as to the presence of brain metastases/leptomeningeal spread and its symptomatic and treatment status:

• the patient has never had any known brain metastases or leptomeningeal spread
• the patient has active brain metastases/leptomeningeal spread and has not received any active treatment for this CNS spread
• the patient has been previously treated with CNS radiotherapy/stereotactic radiosurgery/intrathecal chemotherapy and the metastatic CNS disease is stable
• the patient has been previously treated with CNS radiotherapy/stereotactic radiosurgery/intrathecal chemotherapy and the metastatic CNS disease is progressing

11. The patient has had no prior treatment with trastuzumab deruxtecan
12. Trastuzumab deruxtecan will be used as monotherapy
13. Trastuzumab deruxtecan will be given until disease progression or unacceptable toxicity or patient choice to stop treatment.

Note

Note: trastuzumab deruxtecan is not to be used beyond first disease progression outside the CNS. Note: it is advised that trastuzumab deruxtecan is not (at least initially) discontinued if disease progression is within the CNS alone.

14. Where a treatment break of more than 6 weeks beyond the expected 3-weekly cycle length is needed, I will complete a treatment break approval form to restart treatment, which MUST be approved before treatment is recommenced.
15. Trastuzumab deruxtecan will be otherwise used as set out in its Summary of Product Characteristics (SmPC).

CDF funded From: 20 April 2021

Additional information

Form version: 1.3

CDF Managed Access: Yes

NICE Technology Appraisal: NA (NA)

Current Form Version

Note

The data on this page was produced using version 1.407 of the CDF list, downloaded from NHS England’s website on 06 October 2026 at 22:10.

If NHS England has published a new version of the CDF List but this site has not yet accessed that, this form may be out of date. Additionally, if any update has occurred without NHS England noting it as a change, this page will be out of date.