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BMC Cancer
Published in: BMC Cancer 1/2018

Open Access 01-12-2018 | Research article

Prediction of pathological complete response and prognosis in patients with neoadjuvant treatment for triple-negative breast cancer

Authors: Paul Gass, Michael P. Lux, Claudia Rauh, Alexander Hein, Mayada R. Bani, Cornelia Fiessler, Arndt Hartmann, Lothar Häberle, Jutta Pretscher, Ramona Erber, David L. Wachter, Rüdiger Schulz-Wendtland, Matthias W. Beckmann, Peter A. Fasching, Marius Wunderle

Published in: BMC Cancer | Issue 1/2018

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Abstract

Background

It has been reported that pathological complete response is an important surrogate marker for disease-free survival and overall survival in patients with triple-negative breast cancer. This study investigates predictors of the response to neoadjuvant platinum-based or anthracycline-based treatment, and of the prognosis, in patients with triple-negative breast cancer.

Methods

A total of 121 patients with triple-negative breast cancer received neoadjuvant treatment with either platinum or anthracycline between 2008 and 2013. Pathological complete response was assessed relative to different treatments using logistic regression models with age, clinical tumor stage, grading, and Ki-67 as predictors and interaction terms, to obtain adjusted and subgroup-specific results. The impact of the pathological complete response rate on disease-free survival and overall survival was also analyzed.

Results

The pathological complete response rate was higher after platinum/taxane treatment compared with anthracycline/taxane (50.0% vs. 41.8%), but this was not significant in the adjusted analysis (OR 1.44; 95% CI, 0.68 to 3.09). A high histological grade (G3) was a predictor for higher pathological complete response in platinum-based therapy (OR 2.27; 95% CI, 1.00 to 5.30). The effect of neoadjuvant chemotherapy on pathological complete response was significantly different for G1–2 vs. G3 (Pinteraction = 0.013), and additional subgroup-specific differences were noted. Pathological complete response was a predictor for improved disease-free survival and overall survival in both treatment groups, with and without platinum chemotherapy.

Conclusions

This retrospective study of patients with triple-negative breast cancer adds to the evidence that the treatment effect of platinum may be greatest particularly in G3 tumors. In addition, the effect of pathological complete response on the prognosis does not depend on the treatment used.
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Metadata
Title
Prediction of pathological complete response and prognosis in patients with neoadjuvant treatment for triple-negative breast cancer
Authors
Paul Gass
Michael P. Lux
Claudia Rauh
Alexander Hein
Mayada R. Bani
Cornelia Fiessler
Arndt Hartmann
Lothar Häberle
Jutta Pretscher
Ramona Erber
David L. Wachter
Rüdiger Schulz-Wendtland
Matthias W. Beckmann
Peter A. Fasching
Marius Wunderle
Publication date
01-12-2018
Publisher
BioMed Central
Published in
BMC Cancer / Issue 1/2018
Electronic ISSN: 1471-2407
DOI
https://doi.org/10.1186/s12885-018-4925-1

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