(UroToday.com) The treatment of germ cell tumors that relapse after or are refractory to platinum-based chemotherapy can include high dose chemotherapy (HDCT) with autologous stem-cell transplant (ASCT). Multiple cohorts from North America and Europe suggest that 5-year overall survival with HDCT ranges is between 48% and 65%. In this abstract, the authors conducted a retrospective and multi-center cohort study of outcomes from HDCT and ASCT in Australia and New Zealand between 1999 and 2019.