Abstract
Withdrawal of radiotherapy in patients with brain tumors under four years decreases chance for cure. AutoHSCT in a series of pilot studies demonstrated a potential to improve outcomes in these patients. The study included 50 patients with median age of 39 months (7–53). Medulloblastoma (n = 28, 56%), ETMR (n = 9, 18%) and other histological types (n = 13, 26%) were most commonly diagnosed. Forty two patients (84%) received tandem autoHSCT by HIT-MED protocol, and single autoHSCT was performed in eight children (16%). Adjuvant radiotherapy was administered in 25 (50%) children and treatment of relapse included radiotherapy in 6 (12%). Median follow-up was 39.6 months (6–121). Long-term CIR was 37%, and TRM – 6%. Five-year OS was 71% in medulloblastoma, 37% in ETMR and in other tumors – 51% (p = 0.07). Irradiation-free OS at 5 years for children with medulloblastoma was 24%. For the whole cohort of CNS tumors, independently of histology, OS and PFS at five years were 60% and 46%, respectively Young children with medulloblastoma, following tandem autoHSCT, demonstrate OS comparable to older children. Patients with other histological types demonstrate suboptimal long-term survival rates after autoHSCT and one should assess whether these patients benefit from autoHSCT.
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Conceptualization, AGG and LSZ; methodology, OGZ; resources, ADK; software, PST; formal analysis, IVK; investigation, TVY; data curation, EVM; writing—original draft preparation, AVK and AGG; writing—review and editing, YAP and OGZ; supervision, LSZ.
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Gevorgian, A.G., Kozlov, A.V., Tolkunova, P.S. et al. Tandem autologous hematopoietic stem cell transplantation for embryonal brain tumors in infants and very young children. Bone Marrow Transplant 57, 607–612 (2022). https://doi.org/10.1038/s41409-022-01593-x
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DOI: https://doi.org/10.1038/s41409-022-01593-x