Metastatic triple-negative breast cancer
Prepared with OnCo (onco.cc/prep/tnbc-metastatic/). Orientation, not medical advice; your team knows your case.
My details
What I know, what is unclear, changes to discuss
Saved in this browserMy questions
22 on the sheet- 1.What is my exact diagnosis, stage, and grade, and which tests established them?
- 2.Which biomarkers have been tested on my tumour (for example PD-L1 by 22C3 combined positive score, Germline BRCA1 and BRCA2, HER2 immunohistochemistry to identify HER2-low disease, Repeat receptor testing on a metastatic biopsy, TROP2 expression), and what were the results?
- 3.Which subtype is my cancer, and does that change the recommended treatment?
- 4.Is germline (inherited) genetic testing recommended for me or my family?
- 5.For my situation (first line, combined positive score 10 or more), which of the standard options do you recommend and why?
- 6.Am I a candidate for Pembrolizumab, Sacituzumab govitecan, and what side effects should I expect?
- 7.How do the results of KEYNOTE-355 and ASCENT-04 / KEYNOTE-D19 apply to someone like me?
- 8.For my situation (first line, pd-l1-negative or immunotherapy-ineligible), which of the standard options do you recommend and why?
- 9.Am I a candidate for Datopotamab deruxtecan, Sacituzumab govitecan, Paclitaxel / nab-paclitaxel or related drugs, and what side effects should I expect?
- 10.How do the results of TROPION-Breast02 and ASCENT-03 apply to someone like me?
- 11.For my situation (germline brca carriers), which of the standard options do you recommend and why?
- 12.Am I a candidate for Olaparib, Talazoparib, Carboplatin, and what side effects should I expect?
- 13.How do the results of OlympiAD and EMBRACA apply to someone like me?
- 14.For my situation (second line and beyond), which of the standard options do you recommend and why?
- 15.Am I a candidate for Sacituzumab govitecan, Trastuzumab deruxtecan, Izalontamab brengitecan or related drugs, and what side effects should I expect?
- 16.How do the results of ASCENT and DESTINY-Breast04 apply to someone like me?
- 17.For my situation (brain metastases), which of the standard options do you recommend and why?
- 18.Are there clinical trials I could join, for example of Izalontamab brengitecan, BL-B01D1-307, Sacituzumab tirumotecan, TROPION-Breast05?
- 19.Would a second opinion at a high-volume centre change anything, and can you help arrange it?
- 20.What supportive care (symptom control, nutrition, exercise, mental health, financial help) is available from the start?
- 21.I read that “Cross-resistance between antibody-drug conjugates sharing a topoisomerase I payload”. How does that affect my plan?
- 22.I read that “No biomarker selects patients for TROP2 drugs”. How does that affect my plan?
The words I may hear
- Germline BRCA mutation (gBRCA): An inherited fault in the BRCA1 or BRCA2 gene, present in every cell from birth, that greatly raises the risk of breast, ovarian, prostate and pancreatic cancer and makes those cancers sensitive to PARP inhibitors and platinum.
- Combined positive score (CPS): A PD-L1 score that counts stained tumour cells and immune cells together.
- Brain metastases (intracranial disease): Tumour deposits that have travelled to the brain from a cancer elsewhere, ten times more common than cancers that start in the brain, mostly from lung, breast, melanoma and kidney cancer.
Tests and results to bring
Biomarker results to ask for: PD-L1 by 22C3 combined positive score (10 or more for pembrolizumab), Germline BRCA1 and BRCA2 (PARP inhibitors), HER2 immunohistochemistry to identify HER2-low disease, Repeat receptor testing on a metastatic biopsy (receptor conversion), TROP2 expression (not required for TROP2 antibody-drug conjugates), Tumour mutational burden and microsatellite instability (tumour-agnostic immunotherapy).
Scans and tests linked to this cancer: MRD / molecular residual disease testing, TROP2 PET.
Bring copies of scan reports, pathology and blood results, and a list of every medicine and supplement.
The treatments I may be offered
- First line, combined positive score 10 or more: Pembrolizumab with chemotherapy (KEYNOTE-355) or with sacituzumab govitecan (ASCENT-04). (Pembrolizumab, KEYNOTE-355, Sacituzumab govitecan, ASCENT-04 / KEYNOTE-D19, Combined positive score (CPS))
- First line, PD-L1-negative or immunotherapy-ineligible: Datopotamab deruxtecan (TROPION-Breast02) or sacituzumab govitecan (ASCENT-03); a taxane or platinum where antibody-drug conjugates are unavailable. (Datopotamab deruxtecan, TROPION-Breast02, Sacituzumab govitecan, ASCENT-03, Paclitaxel / nab-paclitaxel, Carboplatin)
- Germline BRCA carriers: Olaparib (OlympiAD) or talazoparib (EMBRACA) after or instead of first-line chemotherapy; platinum chemotherapy is also more active. (Olaparib, OlympiAD, Talazoparib, EMBRACA, Carboplatin, Germline BRCA mutation (gBRCA))
- Brain metastases: Stereotactic radiosurgery or whole-brain radiotherapy with continued systemic therapy; antibody-drug conjugates have early evidence of intracranial activity. (Stereotactic radiosurgery (Gamma Knife, CyberKnife, linac SRS), Brain metastases (intracranial disease))
- Second line and beyond: Whichever TROP2 antibody-drug conjugate has not been used (ASCENT); trastuzumab deruxtecan for HER2-low tumours (DESTINY-Breast04); izalontamab brengitecan where available; eribulin, capecitabine or gemcitabine with carboplatin. (Sacituzumab govitecan, ASCENT, Trastuzumab deruxtecan, DESTINY-Breast04, Izalontamab brengitecan, Eribulin, Capecitabine, Gemcitabine)
From the standard of care recorded for this cancer; which apply depends on your stage and biomarkers. Ask which the team recommends and why.