Open Access

Associations in tumor infiltrating lymphocytes between clinicopathological factors and clinical outcomes in estrogen receptor‑positive/human epidermal growth factor receptor type 2 negative breast cancer

  • Authors:
    • Yuichiro Miyoshi
    • Tadahiko Shien
    • Akiko Ogiya
    • Naoko Ishida
    • Kieko Yamazaki
    • Rie Horii
    • Yoshiya Horimoto
    • Norikazu Masuda
    • Hiroyuki Yasojima
    • Touko Inao
    • Tomofumi Osako
    • Masato Takahashi
    • Nobumoto Tomioka
    • Yumi Wanifuchi‑Endo
    • Mitsuchika Hosoda
    • Hiroyoshi Doihara
    • Hiroko Yamashita
  • View Affiliations

  • Published online on: December 19, 2018     https://doi.org/10.3892/ol.2018.9853
  • Pages: 2177-2186
  • Copyright: © Miyoshi et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

The value of assessing tumor infiltrating lymphocytes (TILs) in estrogen receptor (ER) positive/human epidermal growth factor receptor type 2 (HER2) negative breast cancer has yet to be determined. In the present study, a total of 184 cases with early distant recurrence detected within 5 years following the primary operation, 134 with late distant recurrence diagnosed following 5 years or longer and 321 controls without recurrence for >10 years following starting the initial treatment for ER‑positive/HER2 negative breast cancer, registered in 9 institutions, were analyzed. The distributions of TILs and their clinical relevance were investigated. TIL distributions did not differ significantly among the early, late and no recurrence groups, employing a 30% cut‑off point as a dichotomous variable. In those who had received adjuvant chemotherapy as well as endocrine therapy, a trend toward higher TIL proportions was detected when the early recurrence group was compared with the no recurrence group employing the 30% cut‑off point (P=0.064). The TIL distributions were significantly associated with nodal metastasis (P=0.004), ER status (P=0.045), progesterone receptor (PgR) status (P=0.002), tumor grade (P=0.021), and the Ki67 labeling index (LI) (P=0.002) in the no recurrence group and with the Ki67 LI in the recurrence groups (P=0.002 in early recurrence group, P=0.023 in late recurrence group). High TIL distributions also predicted shorter survival time following the detection of recurrence (P=0.026). However, these prognostic interactions were not significant in multivariate analysis (P=0.200). The present retrospective study demonstrated no significant interaction between TIL proportions and the timing of recurrence. However, higher TIL proportions were observed in breast cancer patients with aggressive biological phenotypes, which tended to be more responsive to chemotherapy. The clinical relevance of stromal TILs for identifying patients who would likely benefit from additional therapies merits further investigation in a larger patient population.
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February-2019
Volume 17 Issue 2

Print ISSN: 1792-1074
Online ISSN:1792-1082

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Spandidos Publications style
Miyoshi Y, Shien T, Ogiya A, Ishida N, Yamazaki K, Horii R, Horimoto Y, Masuda N, Yasojima H, Inao T, Inao T, et al: Associations in tumor infiltrating lymphocytes between clinicopathological factors and clinical outcomes in estrogen receptor‑positive/human epidermal growth factor receptor type 2 negative breast cancer. Oncol Lett 17: 2177-2186, 2019
APA
Miyoshi, Y., Shien, T., Ogiya, A., Ishida, N., Yamazaki, K., Horii, R. ... Yamashita, H. (2019). Associations in tumor infiltrating lymphocytes between clinicopathological factors and clinical outcomes in estrogen receptor‑positive/human epidermal growth factor receptor type 2 negative breast cancer. Oncology Letters, 17, 2177-2186. https://doi.org/10.3892/ol.2018.9853
MLA
Miyoshi, Y., Shien, T., Ogiya, A., Ishida, N., Yamazaki, K., Horii, R., Horimoto, Y., Masuda, N., Yasojima, H., Inao, T., Osako, T., Takahashi, M., Tomioka, N., Wanifuchi‑Endo, Y., Hosoda, M., Doihara, H., Yamashita, H."Associations in tumor infiltrating lymphocytes between clinicopathological factors and clinical outcomes in estrogen receptor‑positive/human epidermal growth factor receptor type 2 negative breast cancer". Oncology Letters 17.2 (2019): 2177-2186.
Chicago
Miyoshi, Y., Shien, T., Ogiya, A., Ishida, N., Yamazaki, K., Horii, R., Horimoto, Y., Masuda, N., Yasojima, H., Inao, T., Osako, T., Takahashi, M., Tomioka, N., Wanifuchi‑Endo, Y., Hosoda, M., Doihara, H., Yamashita, H."Associations in tumor infiltrating lymphocytes between clinicopathological factors and clinical outcomes in estrogen receptor‑positive/human epidermal growth factor receptor type 2 negative breast cancer". Oncology Letters 17, no. 2 (2019): 2177-2186. https://doi.org/10.3892/ol.2018.9853