Correction to: Breast Cancer (2020) 27:322–331 https://doi.org/10.1007/s12282-020-01085-0

The article “The Japanese Breast Cancer Society Clinical Practice Guidelines for systemic treatment of breast cancer, 2018 edition”, written by Tatsunori Shimoi, Shigenori E. Nagai, Tetsuhiro Yoshinami, Masato Takahashi, Hitoshi Arioka, Mikiya Ishihara, Yuichiro Kikawa, Kei Koizumi, Naoto Kondo, Yasuaki Sagara, Masahiro Takada, Toshimi Takano, Junji Tsurutani, Yoichi Naito, Rikiya Nakamura, Masaya Hattori, Fimikata Hara, Naoki Hayashi, Toshiro Mizuno, Minoru Miyashita, Nami Yamashita, Takashi Yamanaka, Shigehira Saji, Hiroji Iwata, Tatsuya Toyama, was originally published electronically on the publisher’s internet portal on 2 April 2020 without open access. After publication in volume 27, issue 3, page 322–331, the author decided to opt for Open Choice and to make the article an Open Access publication. Therefore, the copyright of the article has been changed to © The Author(s) and the article is forthwith distributed under the terms of the Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made.

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The original article has been updated.