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Original Article
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Volume 348:203-213 January 16, 2003 Number 3
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Intratumoral T Cells, Recurrence, and Survival in Epithelial Ovarian Cancer
Lin Zhang, M.D., Jose R. Conejo-Garcia, M.D., Ph.D., Dionyssios Katsaros, M.D., Ph.D., Phyllis A. Gimotty, Ph.D., Marco Massobrio, M.D., Giorgia Regnani, M.D., Antonis Makrigiannakis, M.D., Ph.D., Heidi Gray, M.D., Katia Schlienger, M.D., Ph.D., Michael N. Liebman, Ph.D., Stephen C. Rubin, M.D., and George Coukos, M.D., Ph.D.

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ABSTRACT

Background Although tumor-infiltrating T cells have been documented in ovarian carcinoma, a clear association with clinical outcome has not been established.

Methods We performed immunohistochemical analysis of 186 frozen specimens from advanced-stage ovarian carcinomas to assess the distribution of tumor-infiltrating T cells and conducted outcome analyses. Molecular analyses were performed in some tumors by real-time polymerase chain reaction.

Results CD3+ tumor-infiltrating T cells were detected within tumor-cell islets (intratumoral T cells) in 102 of the 186 tumors (54.8 percent); they were undetectable in 72 tumors (38.7 percent); the remaining 12 tumors (6.5 percent) could not be evaluated. There were significant differences in the distributions of progression-free survival and overall survival according to the presence or absence of intratumoral T cells (P<0.001 for both comparisons). The five-year overall survival rate was 38.0 percent among patients whose tumors contained T cells and 4.5 percent among patients whose tumors contained no T cells in islets. Significant differences in the distributions of progression-free survival and overall survival according to the presence or absence of intratumoral T cells (P<0.001 for both comparisons) were also seen among 74 patients with a complete clinical response after debulking and platinum-based chemotherapy: the five-year overall survival rate was 73.9 percent among patients whose tumors contained T cells and 11.9 percent among patients whose tumors contained no T cells in islets. The presence of intratumoral T cells independently correlated with delayed recurrence or delayed death in multivariate analysis and was associated with increased expression of interferon-{gamma}, interleukin-2, and lymphocyte-attracting chemokines within the tumor. The absence of intratumoral T cells was associated with increased levels of vascular endothelial growth factor.

Conclusions The presence of intratumoral T cells correlates with improved clinical outcome in advanced ovarian carcinoma.


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From the Abramson Family Cancer Research Institute (L.Z., K.S., M.N.L., G.C.), the Center for Research on Reproduction and Women's Health (L.Z., J.R.C.-G., G.R., H.G., G.C.), the Division of Gynecologic Oncology, Department of Obstetrics and Gynecology (S.C.R., G.C.), and the Department of Biostatistics and Epidemiology (P.A.G.), University of Pennsylvania, Philadelphia; the Department of Obstetrics and Gynecology, University of Turin, Turin, Italy (D.K., M.M.); and the Department of Obstetrics and Gynecology, University of Heraklion, Heraklion, Greece (A.M.).

Drs. Zhang, Conejo-Garcia, and Katsaros contributed equally to the article.

Address reprint requests to Dr. Coukos at the Center for Research on Reproduction and Women's Health, University of Pennsylvania, 1355 Biomedical Research Bldg. II/III, 421 Curie Blvd., Philadelphia, PA 19104, or at gcks{at}mail.med.upenn.edu.

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Related Letters:

T Cells in Ovarian Cancer
Fraggetta F., Scollo P., Pelosi G., Coukos G., Zhang L., Conejo-Garcia J. R.
Extract | Full Text | PDF  
N Engl J Med 2003; 348:1814, May 1, 2003. Correspondence

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