PMID- 31108276 OWN - NLM STAT- MEDLINE DCOM- 20200410 LR - 20200410 IS - 1879-0887 (Electronic) IS - 0167-8140 (Linking) VI - 137 DP - 2019 Aug TI - Boron neutron capture therapy for locally recurrent head and neck squamous cell carcinoma: An analysis of dose response and survival. PG - 153-158 LID - S0167-8140(19)30396-2 [pii] LID - 10.1016/j.radonc.2019.04.033 [doi] AB - BACKGROUND AND PURPOSE: Head and neck squamous cell carcinoma (HNSCC) that recurs locally is a therapeutic challenge. We investigated the efficacy of boron neutron capture therapy (BNCT) in the treatment of such patients and the factors associated with treatment response and survival. METHODS AND MATERIALS: Seventy-nine patients with inoperable, locally recurred HNSCC were treated with l-boronophenylalanine-mediated BNCT in Espoo, Finland, between February, 2003 and January, 2012. Prior treatments consisted of surgery and conventionally fractionated radiotherapy to a median cumulative dose of 66 Gy (interquartile range [IQR], 59-70 Gy) administered with or without concomitant chemotherapy. Tumor response was assessed using the RECISTv.1.0 criteria. RESULTS: Forty patients received BNCT once (on 1 day), and 39 twice. The median time between the 2 treatments was 6 weeks. Forty-seven (68%; 95% confidence interval [CI], 57-79%) of the 69 evaluable patients responded; 25 (36%) had a complete response, 22 (32%) a partial response, 17 (25%) a stable disease lasting for a median of 4.2 months, and 5 (7%) progressed. The patients treated with BNCT twice responded more often than those treated once. The median follow-up time after BNCT was 7.8 years. The 2-year locoregional progression-free survival rate was 38% and the overall survival rate 21%. A high minimum tumor dose and a small volume were independently associated with long survival in a multivariable analysis. CONCLUSIONS: Most patients responded to BNCT. A high minimum tumor dose from BNCT was predictive for response and survival. CI - Copyright (c) 2019 The Authors. Published by Elsevier B.V. All rights reserved. FAU - Koivunoro, Hanna AU - Koivunoro H AD - Department of Oncology, Helsinki University Hospital and University of Helsinki, Finland; Neutron Therapeutics Finland Ltd, Helsinki, Finland. FAU - Kankaanranta, Leena AU - Kankaanranta L AD - Department of Oncology, Helsinki University Hospital and University of Helsinki, Finland. FAU - Seppala, Tiina AU - Seppala T AD - Department of Oncology, Helsinki University Hospital and University of Helsinki, Finland. FAU - Haapaniemi, Aaro AU - Haapaniemi A AD - Department of Otorhinolaryngology - Head and Neck Surgery, Helsinki University Hospital and University of Helsinki, Finland. FAU - Makitie, Antti AU - Makitie A AD - Department of Otorhinolaryngology - Head and Neck Surgery, Helsinki University Hospital and University of Helsinki, Finland. FAU - Joensuu, Heikki AU - Joensuu H AD - Department of Oncology, Helsinki University Hospital and University of Helsinki, Finland. Electronic address: heikki.joensuu@hus.fi. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190517 PL - Ireland TA - Radiother Oncol JT - Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology JID - 8407192 SB - IM MH - Aged MH - Boron Neutron Capture Therapy/*methods MH - Female MH - Head and Neck Neoplasms/*radiotherapy MH - Humans MH - Male MH - Middle Aged MH - Neoplasm Recurrence, Local/*radiotherapy MH - Remission Induction MH - Retrospective Studies MH - Squamous Cell Carcinoma of Head and Neck/*radiotherapy MH - Survival Rate OTO - NOTNLM OT - Boron neutron capture therapy OT - Boronophenylalanine OT - Head and neck cancer OT - Radiotherapy EDAT- 2019/05/21 06:00 MHDA- 2020/04/11 06:00 CRDT- 2019/05/21 06:00 PHST- 2018/08/11 00:00 [received] PHST- 2019/03/03 00:00 [revised] PHST- 2019/04/29 00:00 [accepted] PHST- 2019/05/21 06:00 [pubmed] PHST- 2020/04/11 06:00 [medline] PHST- 2019/05/21 06:00 [entrez] AID - S0167-8140(19)30396-2 [pii] AID - 10.1016/j.radonc.2019.04.033 [doi] PST - ppublish SO - Radiother Oncol. 2019 Aug;137:153-158. doi: 10.1016/j.radonc.2019.04.033. Epub 2019 May 17.