pCR rates were lower in HER2-positive (vs negative) pts (11% [2/19] vs 27% [17/63]). After a median follow up of 23 mo, DFS and TTR were significantly shorter in HER2 positive (vs negative) pts, independent of other pretreatment covariables (Table). Yet OS was comparable. Lung recurrence was enriched in HER2 positive (vs negative) pts. Among pts with recurrence...HER2 positivity (vs negativity) is independently associated with shorter TTR and DFS, but more comparable OS.