Reproducibility of Immunohistochemical Testing of Estrogen Receptors, Progesterone Receptors, Human Epidermal Growth Factor Receptor-2 (HER2) and Ki-67 in Vietnam

Abstract

• please read through all the templates before choosing • pick the most relevant text template(s) from the following page and delete all others.• edit the text as necessary, ensuring that the original incorrect text is included for the record, please see the below. • please do not use any extra formatting when editing the templates, and only modify the red text unless absolutely necessaryWhen the original text contained incorrect information, to preserve the scientific record, please include that text when editing the below templates. For example:There was a mistake in the Funding statement, an incorrect number was used. The correct number is "2015C03Bd051.". The publisher apologizes for this mistake.The original version of this article has been updated.In the published article, there was a mistake in the Funding statement. [FIGURE 1 | An invasive carcinoma of the breast tested for; (A) estrogen receptors, (B) progesterone receptors, (C) human epidermal growth factor receptor-2, (D) Ki-67 proliferating antigen. Following immunohistochemical testing and scoring by all ten participating laboratories, the median scores for the tumor were; (A, ER 0), (B PR 0), (C HER2 3+), (D Ki67 40%). Magnification ×20 (all images). FIGURE 2 | An invasive carcinoma of the breast tested for; (A) estrogen receptors, (B) progesterone receptors, (C) human epidermal growth factor receptor-2, (D) Ki-67 proliferating antigen. Following immunohistochemical testing and scoring by all ten participating laboratories, the median scores for the tumor were; (A, ER 0), (B PR 0), (C HER2 1+), (D Ki67 23%). Magnification ×20 (all images). The authors apologize for this error and state that this does not change the scientific conclusions of the article in any way. The original article has been updated.