Journal
JOURNAL OF UROLOGY
Volume 208, Issue 3, Pages 641-649Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/JU.0000000000002751
Keywords
neoplasms; germ cell and embryonal; therapeutics; watchful waiting
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This study reports the long-term outcomes of patients with metastatic germ cell tumors who achieved a complete response (CR) after first-line chemotherapy. The majority of patients had no evidence of disease during the follow-up period, and patients in the good risk category had a higher survival rate.
Purpose: The optimal management of patients with metastatic germ cell tumors who achieve a complete response (CR) after first-line chemotherapy remains unsettled. This study reports long-term outcomes of patients withmetastatic germ cell tumor managed with surveillance after achieving a CR to first-line chemotherapy. Materials and Methods: Patients with metastatic nonseminomatous germ cell tumor treated at Indiana University between 1990 and 2017 who achieved a CR after first-line chemotherapy and were monitored with surveillance were retrospectively analyzed. CR was defined as normalization of tumor markers AFP and hCG, and no residual mass >1 cm in long axis. Kaplan-Meier methods were used to analyze progression-free survival (PFS) and overall survival (OS). Results: Three hundred sixty-seven patients achieved a CR and were managed with surveillance. After a median followup of 4.97 years, 34 patients had disease progression. At most recent followup, 346 (94%) patients were alive with no evidence of disease, 10 patients (2.7%) died of their disease, 5 (1.4%) died of other causes and 6 (1.6%) were lost to followup. The estimated 2-year PFS was 91% (95% CI: 87%-94%) and 2-year OS was 98% (95% CI: 96%-99%). The estimated 2-year PFS by International Germ Cell Cancer Collaborative Group risk category was 92% for good vs 90% for intermediate vs 87% for poor risk (p=0.15), and the estimated 2-year OS was 99% for good vs 96% for intermediate vs 93% for poor risk disease (p=0.001). Conclusions: Patients with metastatic nonseminomatous germ cell tumor who achieve a CR after first-line chemotherapy can be observed. Most patients who relapse can be salvaged with surgery and/or chemotherapy.
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