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OBJECTIVE: The aim of this study was to construct a prognostic index that predicts risk of relapse in women who have completed first-line treatment for ovarian cancer (OC). METHODS: A database of OC cases from 2000 to 2010 was interrogated for International Federation of Gynecology and Obstetrics stage, grade and histological subtype of cancer, preoperative and posttreatment CA-125 level, presence or absence of residual disease after cytoreductive surgery and on postchemotherapy computed tomography scan, and time to progression and death. The strongest predictors of relapse were included into an algorithm, the Risk of Ovarian Cancer Relapse (ROVAR) score. RESULTS: Three hundred fifty-four cases of OC were analyzed to generate the ROVAR score. Factors selected were preoperative serum CA-125, International Federation of Gynecology and Obstetrics stage and grade of cancer, and presence of residual disease at posttreatment computed tomography scan. In the validation data set, the ROVAR score had a sensitivity and specificity of 94% and 61%, respectively. The concordance index for the validation data set was 0.91 (95% confidence interval, 0.85-0.96). The score allows patient stratification into low (<0.33), intermediate (0.34-0.67), and high (>0.67) probability of relapse. CONCLUSIONS: The ROVAR score stratifies patients according to their risk of relapse following first-line treatment for OC. This can broadly facilitate the appropriate tailoring of posttreatment care and support.

Original publication

DOI

10.1097/IGC.0000000000000361

Type

Journal article

Journal

Int J Gynecol Cancer

Publication Date

03/2015

Volume

25

Pages

416 - 422

Keywords

Algorithms, CA-125 Antigen, Cytoreduction Surgical Procedures, Fallopian Tube Neoplasms, Female, Humans, Neoplasm Grading, Neoplasm Recurrence, Local, Neoplasm Staging, Neoplasm, Residual, Ovarian Neoplasms, Peritoneal Neoplasms, Prognosis, Risk Assessment, Risk Factors, Sensitivity and Specificity, Tomography, X-Ray Computed