Skip to main content
main-content

04.02.2019 | Clinical trial | Ausgabe 1/2019

Breast Cancer Research and Treatment 1/2019

Retrospectively validating the results of the ACOSOG Z0011 trial in a large Asian Z0011-eligible cohort

Zeitschrift:
Breast Cancer Research and Treatment > Ausgabe 1/2019
Autoren:
Jiwoong Jung, Wonshik Han, Eun Sook Lee, So-Youn Jung, Jai Hong Han, Dong-Young Noh, Yumi Kim, Hee Jun Choi, Jeong Eon Lee, Seok Jin Nam, Jong Won Lee, Hee Jeong Kim, Eunhae Um, Joo Heung Kim, Seho Park, Young Up Cho
Wichtige Hinweise

Electronic supplementary material

The online version of this article (https://​doi.​org/​10.​1007/​s10549-019-05157-4) contains supplementary material, which is available to authorized users.
Jiwoong Jung and Wonshik Han have contributed equally to this study.

Publisher’s Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Abstract

Purpose

The Z0011 trial demonstrated that axillary dissection (ALND) could be omitted during breast-conserving therapy for cT1-2N0 breast cancers with 1–2 metastatic SLNs. However, that result has not been validated in a larger cohort and the significance of the small number of SLNs remains unclear. This study aimed to validate the Z0011 results within an Asian Z0011-eligible cohort and determine whether the number of sentinel lymph nodes (SLNs) influenced the Z0011-based outcomes.

Methods

Data from Asian patients who fulfilled the Z0011 criteria were collected from five hospitals. Disease recurrence (DR) was compared between patients who underwent ALND or SLN dissection (SLND) alone. Propensity-score matching was performed to reduce the effects of potential selection biases.

Results

During 2010–2016, 1750 Asian patients had 1–2 SLN metastases and fulfilled the Z0011 criteria. These patients included 707 cases treated using SLND alone (40%) and 967 patients with ≤ 2 SLNs (55%). Ninety-five patients (5.4%) experienced DR at a median interval of 50 months, although the rates of DR were similar in the ALND and SLND groups. The adjusted hazard ratios for DR after ALND omission were 0.95 (95% CI 0.55–1.64) among the entire cohort and 0.83 (95% CI 0.34–2.03) among patients with ≤ 2 SLNs.

Conclusions

In this Asian Z0011-eligible cohort, ALND omission did not increase risk of DR, even among patients with ≤ 2 SLNs. Therefore, the Z0011 strategy might be safely applied in Asia, and a small number of SLNs did not significantly influence this strategy.

Bitte loggen Sie sich ein, um Zugang zu diesem Inhalt zu erhalten

★ PREMIUM-INHALT
e.Med Interdisziplinär

Mit e.Med Interdisziplinär erhalten Sie Zugang zu allen CME-Fortbildungen und Fachzeitschriften auf SpringerMedizin.de.

Jetzt e.Med zum Sonderpreis bestellen!

Sichern Sie sich jetzt Ihr e.Med-Abo und sparen Sie 50 %!

Weitere Produktempfehlungen anzeigen
Zusatzmaterial
Literatur
Über diesen Artikel

Weitere Artikel der Ausgabe 1/2019

Breast Cancer Research and Treatment 1/2019 Zur Ausgabe
  1. Sie können e.Med Gynäkologie & Urologie 14 Tage kostenlos testen (keine Print-Zeitschrift enthalten). Der Test läuft automatisch und formlos aus. Es kann nur einmal getestet werden.

  2. Das kostenlose Testabonnement läuft nach 14 Tagen automatisch und formlos aus. Dieses Abonnement kann nur einmal getestet werden.