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    The prognostic classification system of the International Germ Cell Cancer Cooperative Group (IGCCCG) for testicular germ cell tumors is based on the histological subtype, location of the primary tumor, extent of metastatic spread and prechemotherapy tumor marker serum concentrations. In this study, we aim to identify whether the use of preorchiectomy instead of prechemotherapy tumor marker serum concentration has an impact on IGCCCG risk group assignment. We performed a retrospective analysis including 135 patients with metastasized testicular germ cell tumors. Analysis of the clinical information with a focus on the tumor marker serum concentration preorchiectomy and prechemotherapy was performed, thus leading to the grouping of patients according to IGCCCG risk group assignment. Using preorchiectomy instead of prechemotherapy tumor markers led to an incorrect IGCCCG risk group classification in 8% (11/135) of all patients, and consequently to a non-guideline concordant treatment. Up-staging was observed in 8 of 11 patients, representing 6% (8/135) of the total patient cohort. Three of the 11 misclassified patients showed a down-staging and thus describe 2% (3/135) of the total patient cohort. Using preorchiectomy tumor markers instead of prechemotherapy serum concentration might lead to an incorrect IGCCCG risk group assignment as well as non-guideline concordant treatment. Consequently, prechemotherapy tumor marker serum concentration should be applied for guideline concordant staging of patients.

    Citation

    Pia Paffenholz, Tim Nestler, Yasmine Maatoug, Melanie von Brandenstein, Barbara Köditz, David Pfister, Axel Heidenreich. Using preorchiectomy tumor marker serum concentrations for International Germ Cell Consensus Classification (IGCCCG) risk group assignment results in significant numbers of up- and downstaging]. Der Urologe. Ausg. A. 2021 Jan 11;60(3):337-343

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    PMID: 33427889

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