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OPBC Newsletter

Oncoplastic Breast Consortium

“The OPBC now consists of 795 members from 92 countries.”

Call for participation in I-PREPARE EUBREAST-11R

This is a call for participation in the International Prospective REgistry on Pre-pectorAl breast Reconstruction (I-PREPARE EUBREAST-11R).

Study synopsis
Feasibility questionnaire

If you are interested in participating, please scan the completed feasibility questionnaire and send it per e-mail to the principal investigator Oreste Gentilini ( with cc to Walter Weber (

Update on other OPBC research projects

Principal Investigator: Giacomo Montagna (Memorial Sloan Kettering Cancer Center, New York, USA)

In this first collaboration between OPBC and EUBREAST, a total of 1144 limited axillary surgery procedures – 478 targeted axillary dissections and 666 sentinel node procedures – in cN+ converting to ycN0 were included at 25 sites in 11 countries. After successful oral presentation at the San Antonio Beast Cancer Symposium on 09 December 22, see picture below, the manuscript is currently being written.

Now we plan to use the same multicenter design to compare axillary dissection with axillary radiation for residual isolated tumor cells in the nodes after neoadjuvant systemic therapy. The call for participation with a study synopsis will be sent by newsletter in January. This will be another fast and successful project.

Principial Investigator: Walter Weber (University Hospital Basel, Switzerland)
Budget: 7.5 Mio CHF (SCL/SCR, multiple foundations)

Two TAXIS sub-studies were accepted for oral presentation at the annual meeting of the Society of Surgical Oncology on 25 March 2023 in Boston.

We currently enrolled 639 of 1500 patients in Switzerland, Hungary, Austria, Germany and Lithuania. Further sites are currently being evaluated for TAXIS trial participation in Argentina, Croatia, Greece, Italy, Brazil, Canada and Qatar.

If you are interested in trial participation, please send an email to to initiate the evaluation of your site.

Publication of first pre-specified subproject
Trial registration

Principial Investigator: Walter Weber (University Hospital Basel, Switzerland)
Budget: 2 Mio CHF (SNF IICT/SCL/SCR)

We currently enrolled 369 of 372 patients in Switzerland, Germany, Sweden, Hungary, Austria, USA, Italy, Israel and Argentina. We estimate that accrual will be completed within a few weeks. Therefore, no additional site participation can be evaluated.

Trial registration
Published protocol

OPBC Event Promotion

March 15-18, 2023: 
St. Gallen International Breast Cancer Conference in Vienna 2023

From 15-18 March 2023, the SGBCC will feature many presentations, several debates, interactive sessions and consensus conference questions on some of the hottest topics in breast and axillary surgery, discussed by global leaders in the field. If you will not be able to travel, you will have the possibility to access a virtual platform, with live streaming of all sessions and entry to a virtual exhibition.

Please contact Walter Weber ( if you are an OPBC member and would like us to evaluate posting a conference or training course on the OPBC website.

Happy holidays!
Copyright © 2022 Oncoplastic Breast Consortium, All rights reserved.
You are receiving this email because you registered yourself as a member of the OPBC on our website.

The OPBC website can be found here:

The contact address is:
Prof. Walter Weber, University Hospital Basel, Switzerland,

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