title: Outcome of T1N0M0 breast cancer in relation to St. Gallen risk assignment criteria for adjuvant therapy.
abstract: T1N0M0 (stage I) breast cancer (BC) has been increasing in recent decades but the optimal adjuvant approach remains controversial. To assess the outcome of BC patients stratified and treated with multimodal therapies according to St. Gallen consensus meeting recommendations, we retrospectively evaluated an unselected cohort of T1N0M0 BC patients, with respect to the St. Gallen criteria. At a median follow-up of 5 years, the recurrence rate, recurrence-free survival and overall survival were 7%, 94% and 96% respectively, and 60% of relapses were locoregional. No statistically significant difference was observed between T1a,b/T1c groups, or among risk categories (high/intermediate/low). The very low rate of distant recurrences even in patients with unfavorable prognostic factors seems to support the use of adjuvant systemic therapies but better prognostic and predictive factors are strongly needed for this subset of patients.
authors.affiliation: Department of Oncology and Hematology, Istituto Clinico Humanitas IRCCS, 20089 Rozzano (Milano), Italy. isabella.garassino@humanitas.it
authors.forename: I
authors.initials: I
authors.lastname: Garassino
authors.forename: G
authors.initials: G
authors.lastname: Gullo
authors.forename: S
authors.initials: S
authors.lastname: Orefice
authors.forename: L
authors.initials: L
authors.lastname: Tondulli
authors.forename: G
authors.initials: G
authors.lastname: Masci
authors.forename: P
authors.initials: P
authors.lastname: Salvini
authors.forename: M
authors.initials: M
authors.lastname: Eboli
authors.forename: L
authors.initials: L
authors.lastname: Di Tommaso
authors.forename: L
authors.initials: L
authors.lastname: Giordano
authors.forename: M
authors.initials: M
authors.lastname: Alloisio
authors.forename: M
authors.initials: M
authors.lastname: Roncalli
authors.forename: A
authors.initials: A
authors.lastname: Santoro
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001943:Breast Neoplasms / Q000401:mortality / Q000473:pathology / Q000601:surgery / Q000628:therapy*; D003131:Combined Modality Therapy; D005260:Female; D006801:Humans; D053208:Kaplan-Meier Estimate; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local / Q000453:epidemiology; D009367:Neoplasm Staging; D011379:Prognosis; D012189:Retrospective Studies; D018570:Risk Assessment; D016019:Survival Analysis