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1.  Application of the International Germ Cell Consensus Classification to the Nova Scotia population of patients with germ cell tumours 
Background
The International Germ Cell Consensus Classification (IGCCC) is the internationally accepted, clinically based prognostic classification used to assist in the management and research of metastatic germ cell tumours (GCTs). The goal of this study was to determine whether the IGCCC is applicable to a population-based cohort.
Methods
We completed a retrospective chart review of patients who received diagnoses of GCT in Nova Scotia between 1984 and 2004 and who received treatment with platin-based chemotherapy for metastatic disease. We assigned the IGCCC to each patient based on the site of the primary lesion, the presence or absence of nonpulmonary visceral metastases and prechemotherapy tumour marker values. We calculated Kaplan–Meier estimates of 5-year progression-free survival (PFS) and overall survival for each IGCCC group.
Results
The study cohort comprised 129 patients. The distribution and outcomes in each group of patients in Nova Scotia was similar to that published in the IGCCC. Among patients with nonseminoma GCTs (NSGCT) 61% had good, 22% had intermediate and 17% had poor prognoses. Among those with seminomas, 85% had good and 15% had intermediate prognoses. Among patients with NSGCTs, the 5-year PFS was 90%, 69% and 55%, and the 5-year overall survival was 94%, 84%, 61% in the good, intermediate, and poor prognostic categories respectively. Among patients with seminomas, the 5-year PFS was 95% and 50% and the 5-year overall survival was 94% and 50% in the good and intermediate prognostic categories, respectively.
Conclusion
The IGCCC seems applicable to a population-based cohort, with similar distribution of categories and clear prognostic ability.
PMCID: PMC2666903  PMID: 19424465

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