Breast (Dec 2021)

Tailored axillary surgery in patients with clinically node-positive breast cancer: Pre-planned feasibility substudy of TAXIS (OPBC-03, SAKK 23/16, IBCSG 57-18, ABCSG-53, GBG 101)

  • Walter P. Weber,
  • Zoltan Matrai,
  • Stefanie Hayoz,
  • Christoph Tausch,
  • Guido Henke,
  • Daniel R. Zwahlen,
  • Günther Gruber,
  • Frank Zimmermann,
  • Stefanie Seiler,
  • Charlotte Maddox,
  • Thomas Ruhstaller,
  • Simone Muenst,
  • Markus Ackerknecht,
  • Sherko Kuemmel,
  • Vesna Bjelic-Radisic,
  • Christian Kurzeder,
  • Mihály Újhelyi,
  • Conny Vrieling,
  • Rok Satler,
  • Inna Meyer,
  • Charles Becciolini,
  • Susanne Bucher,
  • Colin Simonson,
  • Peter M. Fehr,
  • Natalie Gabriel,
  • Robert Maráz,
  • Dimitri Sarlos,
  • Konstantin J. Dedes,
  • Cornelia Leo,
  • Gilles Berclaz,
  • Peter Dubsky,
  • Ruth Exner,
  • Hisham Fansa,
  • Christopher Hager,
  • Klaus Reisenberger,
  • Christian F. Singer,
  • Roland Reitsamer,
  • Mattea Reinisch,
  • Jelena Winkler,
  • Giang Thanh Lam,
  • Mathias K. Fehr,
  • Tatiana Naydina,
  • Magdalena Kohlik,
  • Karine Clerc,
  • Valerijus Ostapenko,
  • Florian Fitzal,
  • Rahel Nussbaumer,
  • Nadia Maggi,
  • Alexandra Schulz,
  • Pagona Markellou,
  • Loïc Lelièvre,
  • Daniel Egle,
  • Jörg Heil,
  • Michael Knauer

Journal volume & issue
Vol. 60
pp. 98 – 110

Abstract

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Aim: We developed tailored axillary surgery (TAS) to reduce the axillary tumor volume in patients with clinically node-positive breast cancer to the point where radiotherapy can control it. The aim of this study was to quantify the extent of tumor load reduction achieved by TAS. Methods: International multicenter prospective study embedded in a randomized trial. TAS is a novel pragmatic concept for axillary surgery de-escalation that combines palpation-guided removal of suspicious nodes with the sentinel procedure and, optionally, imaging-guided localization. Pre-specified study endpoints quantified surgical extent and reduction of tumor load. Results: A total of 296 patients were included at 28 sites in four European countries, 125 (42.2%) of whom underwent neoadjuvant chemotherapy (NACT) and 71 (24.0%) achieved nodal pathologic complete response. Axillary metastases were detectable only by imaging in 145 (49.0%) patients. They were palpable in 151 (51.0%) patients, of whom 63 underwent NACT and 21 had residual palpable disease after NACT. TAS removed the biopsied and clipped node in 279 (94.3%) patients. In 225 patients with nodal disease at the time of surgery, TAS removed a median of five (IQR 3–7) nodes, two (IQR 1–4) of which were positive. Of these 225 patients, 100 underwent ALND after TAS, which removed a median of 14 (IQR 10–17) additional nodes and revealed additional positive nodes in 70/100 (70%) of patients. False-negative rate of TAS in patients who underwent subsequent ALND was 2.6%. Conclusions: TAS selectively reduced the tumor load in the axilla and remained much less radical than ALND.

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