Association between cancer immunity and treatment results in uterine cervical cancer patients treated with radiotherapy. (25th August 2020)

• Record Type: Journal Article
• Authors: Someya, Masanori; Tsuchiya, Takaaki; Fukushima, Yuki; Hasegawa, Tomokazu; Takada, Yu; Hori, Masakazu; Miura, Katsutoshi; Kitagawa, Mio; Gocho, Toshio; Hirohashi, Yoshihiko; Torigoe, Toshihiko; Iwasaki, Masahiro; Matsuura, Motoki; Saito, Tsuyoshi; Sakata, Koh-ichi
• Is Part Of: Japanese journal of clinical oncology. Volume 50:Number 11(2020)
• Page Start: 1290
• Page End: 1297
• Publication Date: 2020-08-25
• Subjects: cervical cancer -- radiotherapy -- tumor immunity -- CD8 -- forkhead box P3 -- human leukocyte antigen class I -- programmed death ligand 1; Oncology -- Periodicals; Cancer -- Periodicals; 616.994005
• DOI: 10.1093/jjco/hyaa149
• Languages: English
• ISSNs: 0368-2811

Abstract

Abstract: Objective: To evaluate proteins related to tumor immune response and treatment outcome from radiotherapy for uterine cervical cancer patients. Methods: We performed a retrospective immunohistochemical staining of 81 patients with uterine cervical cancer who underwent definitive radiotherapy. We examined the expression of programmed death ligand 1, human leukocyte antigen class I, tumor-infiltrating CD8+, and forkhead box P3+ (FoxP3+) T cells in tumor tissues. Results: In biopsy specimen, patients with a higher number of CD8+ T cells and FoxP3+ T cells had a better disease-specific survival than patients with a lower number of CD8+ T cells and FoxP3+ cells ( P = 0.018 and P = 0.009). Multivariate analysis showed that equivalent dose in 2 Gy fractions (EQD2) of the minimum dose to 90% of the high-risk clinical target volume, FoxP3+ T cells and expression of human leukocyte antigen class I were significant prognostic factors. When the EQD2 is 70 Gy or more, a higher local control rate is obtained regardless of the number of CD8- or FoxP3-positive cells. When EQD2 is <70 Gy, the number of CD8-positive cells has a significant impact on treatment outcome: the recurrence rate (local recurrence rate + distant metastasis rate) was 46.2% in the group with a CD8 value of 230 or higher, whereas the recurrence rate was 75.7% in the group with a CD8 value of less than 230. Conclusion: The combination of CD8 or FoxP3 with EQD2 can be potentially useful to predict the treatment results of radiotherapy for cervical cancer, leading to individualized optimal selection of treatment for cervical cancer. Abstract : The combination of CD8+ or FoxP3+ T cells and radiation dose can be useful in predicting the outcome of radiotherapy for cervical cancer, leading to individualized treatment of cervical cancer.