Open Access

ARTICLE

Prolonged Survival in Patients with Human Epidermal Growth Factor Receptor-2-Overexpressed Metastatic Breast Cancer after Targeted Therapy is Dominantly Contributed by Luminal-Human Epidermal Growth Factor Receptor-2 Population

Keiichi Kontani^1,*, Kana Kuraishi¹, Shin-ichiro Hashimoto¹, Shoko Norimura², Nozomi Hashimoto¹, Masahiro Ohtani³, Naomi Fujiwara-Honjo⁴, Manabu Date⁵, Koji Teramoto⁶, Hiroyasu Yokomise¹

1 Department of Thoracic, Breast and Endocrine Surgery, Kagawa University Faculty of Medicine, 1750-1 Miki-cho, Kita-gun, 761-0793, Japan
2 Department of Surgery, Takamatsu Red Cross Hospital, 4-1-3 Ban-cho, Takamatsu, 760-0017, Japan
3 Kagawa Health Service Association, Health Care Center, 148 Fuseishi, Takamatsu, 761-8071, Japan
4 Department of Radiology, Osaka Neurosurgery Hospital, 378-1 Sanmyo-cho, Takamatsu, 761-8083, Japan
5 Department of Surgery, Date Hospital, 588-8 Kanko-cho, Takamatsu, 760-0076, Japan
6 Department of Surgery, Shiga University of Medical Science, 1-1 Seta, Otsu, 520-2191, Japan

* Corresponding Author: Keiichi Kontani. Email: