Reaction

Her-2 Positive Breast Cancer reporting signals

Last recalculated 2026-09-14T18:28:35.993900+00:00 · 141 reports · 4 co-occurring drugs

As of the last recalculation, Her-2 Positive Breast Cancer appears in 141 FAERS reports alongside 4 co-occurring drug terms. The strongest observed disproportionality signal is TRASTUZUMAB (PRR 289.6).

Important: FAERS is a spontaneous, voluntary, unverified reporting system. PRR and ROR identify reporting patterns for investigation; they are not incidence rates and do not establish causation.
DrugCo-reportsPRRROR
Trastuzumab69289.6289.9
Ado-Trastuzumab Emtansine13250.6251.0
Lapatinib13136.1136.3
Pertuzumab21133.8133.9

Related reactions

Data source: openFDA FAERS. See the OpenPV methodology and limitations.