Abstract
BACKGROUND: High-risk neuroblastoma patients with end-induction residual disease commonly receive post-induction therapy in an effort to increase survival by improving the response before autologous stem cell transplantation (ASCT). The authors conducted a multicenter, retrospective study to investigate the efficacy of this approach. METHODS: Patients diagnosed between 2008 and 2018 without progressive disease with a partial response or worse at end-induction were stratified according to the post-induction treatment: 1) no additional therapy before ASCT (cohort 1), 2) post-induction “bridge” therapy before ASCT (cohort 2), and 3) post-induction therapy without ASCT (cohort 3). χ2 tests were used to compare patient characteristics. Three-year event-free survival (EFS) and overall survival (OS) were estimated by the Kaplan-Meier method and survival curves were compared by log-rank test. RESULTS: The study cohort consisted of 201 patients: cohort 1 (n = 123), cohort 2 (n = 51), and cohort 3 (n = 27). Although the end-induction response was better for cohort 1 than cohorts 2 and 3, the outcomes for cohorts 1 and 2 were not significantly different (P =.77 for EFS and P =.85 for OS). Inferior outcomes were observed for cohort 3 (P <.001 for EFS and P =.06 for OS). Among patients with end-induction stable metastatic disease, 3-year EFS was significantly improved for cohort 2 versus cohort 1 (P =.04). Cohort 3 patients with a complete response at metastatic sites after post-induction therapy had significantly better 3-year EFS than those with residual metastatic disease (P =.01). CONCLUSIONS: Prospective studies to confirm the benefits of bridge treatment and the prognostic significance of metastatic response observed in this study are warranted.
Original language | English (US) |
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Pages (from-to) | 2967-2977 |
Number of pages | 11 |
Journal | cancer |
Volume | 128 |
Issue number | 15 |
DOIs | |
State | Published - Aug 1 2022 |
Funding
This work was supported in part by the Matthew Bittker Foundation (to Susan L. Cohn), a gift from the MacRitchie Family (to Susan L. Cohn), and the National Institutes of Health/National Cancer Institute (K08CA226237; to Mark A. Applebaum; P30CA014599; to Theodore G. Karrison).
Keywords
- autologous transplantation
- neuroblastoma
- prognosis
- survival
- treatment response
ASJC Scopus subject areas
- Oncology
- Cancer Research