PT - JOURNAL ARTICLE AU - IIDA, MASAKI AU - TAKAYAMA, EIJI AU - NAGANAWA, KOSUKE AU - MITSUDO, KENJI AU - ADACHI, MAKOTO AU - BABA, JUN-ICHI AU - FUJIMOTO-MUTO, MASAKO AU - MOTOHASHI, MASAYUKI AU - MIZUNO-KAMIYA, MASAKO AU - KAWAKI, HARUMI AU - KIOI, MITOMU AU - ICHINOSE, MASAO AU - SUMITOMO, SHIN-ICHIRO AU - MURAMATSU, YASUNORI AU - SHIKIMORI, MICHIO AU - TOHNAI, IWAI AU - KONDOH, NOBUO TI - Increase of Peripheral Blood CD57<sup>+</sup> T-Cells in Patients with Oral Squamous Cell Carcinoma DP - 2014 Oct 01 TA - Anticancer Research PG - 5729--5734 VI - 34 IP - 10 4099 - http://ar.iiarjournals.org/content/34/10/5729.short 4100 - http://ar.iiarjournals.org/content/34/10/5729.full SO - Anticancer Res2014 Oct 01; 34 AB - Background/Aim: The subset of T-cells positive for expression of cluster of differentiation (CD) 57 has been associated with various cancer phenotypes. However, the presence of CD57+ T-cells in patients with oral squamous cell carcinoma (OSCC) has yet to be confirmed. In the present study, we examined the diagnostic significance of the presence of CD57+ T-cells in peripheral blood (PB) from patients with OSCC. Materials and Methods: The subset of CD57+ T-cells in PB was analyzed in 43 patients with OSCC by fluorescence-activated cell sorting (FACS) analysis. Results: The proportion of CD57+ T-cells, including both CD8+ and CD4+ subsets, significantly increased with clinical stage, especially in parallel with tumor size. Conclusion: Our results suggest that an increase in the population of CD57+ T-cells is a potent prognostic marker and may also influence the systemic immunity of patients with OSCC.