Conditional Survival of Patients With Metastatic Testicular Germ Cell Tumors Treated With First-Line Curative Therapy
2016
PurposeThe International Germ Cell Cancer Collaborative Group (IGCCCG) criteria prognosticate survival outcomes in metastatic testicular germ cell tumor (MT-GCT), but how the initial risk changes over time for those who survived since curative treatment is unknown.Patients and MethodsWe assessed patients eligible for first-line therapy for MT-GCT at five tertiary cancer centers from 1990 to 2012 for 2-year conditional overall survival (COS) and conditional disease-free survival (CDFS), defined as the probability of surviving, or surviving and being disease free, respectively, for an additional 2 years at a given time point since the initial diagnosis.ResultsFor all patients (N = 942), 2-year COS increased from 92% (95% CI, 91% to 94%) at 0 months to 98% (95% CI, 97% to 99%), and 2-year CDFS increased from 83% (95% CI, 81% to 86%) at baseline to 98% (95% CI, 97% to 99%) at 24 months after diagnosis. Two-year COS improved by 2% (97% at 0 months, 99% at 24 months) in the IGCCCG favorable-risk group, by 5% (9...
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