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  • Title: Postoperative increase in soluble interleukin-2 receptor serum levels as predictor for early recurrence in non-small cell lung carcinoma.
    Author: Tisi E, Lissoni P, Angeli M, Arrigoni C, Corno E, Cassina E, Ballabio D, Benenti C, Barni S, Tancini G.
    Journal: Cancer; 1992 May 15; 69(10):2458-62. PubMed ID: 1314691.
    Abstract:
    It is known that interleukin-2 (IL-2) plays an important role in the activation of host antitumor immune response. In addition to IL-2 cell surface receptor, a soluble form of IL-2 receptor (SIL-2R) may be released in the blood and potentially be involved in the regulation of IL-2 availability. High SIL-2R levels have been found in patients with lung cancer. The current study evaluated the influence of changes in SIL-2R serum levels during the perioperative period on early relapse rate in patients with operable non-small cell lung cancer. The study included 60 patients (epidermoid carcinoma, 33; adenocarcinoma, 27). Serum levels of SIL-2R were measured with an enzyme immunoassay before surgery and 7 and 30 days after surgery. A surgery-induced increase in SIL-2R levels was seen 7 days after surgery in 38 of 60 patients. On the 30th day after surgery, SIL-2R values were lower than the preoperative values in 32 patients (Group A) or still greater in the other 28 patients (Group B). After a median follow-up of 10 months, relapse occurred in 19 of 60 patients. The relapse rate was significantly higher in Group B than in Group A patients (16 of 28 versus 3 of 32, respectively; P less than 0.001). This difference also was significant in relation to histotype and node status. This study shows that the persistence of increased SIL-2R levels in the postoperative period is associated with a higher early relapse rate in patients with operable non-small cell lung cancer. The impact of SIL-2R levels on relapse suggests that host immune defenses may influence the clinical course of patients with lung cancer. Therefore, the evaluation of SIL-2R in the perioperative period may represent a new prognostic biologic factor in operable non-small cell lung cancer.
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