Recommendation of De novo or TFI ≥ 12m

2026 Consensus Statement Update2022 Consensus Statement
Scenario 1
De novo metastatic patients or patients with a treatment-free interval of ≥ 12 months after the end of adjuvant trastuzumab or trastuzumab plus pertuzumab (IV or SC) based therapy: 

Taxane/trastuzumab/pertuzumab (IV or SC) is the preferred first line treatment. Trastuzumab deruxtecan (T-DXd) combined with pertuzumab is also an option.
Scenario 1
De novo metastatic patients or patients with a treatment-free interval of ≥ 12 months after the end of adjuvant therapy: 

Taxane/trastuzumab/pertuzumab is preferred first line treatment.

References

CLEOPATRA, DB-09

Quality of evidence: I; Strength of recommendation: A

(2026 UPDATE)