Multi-Institutional Study Validates Safety of Intraoperative Cesium-131 Brachytherapy for Treatment of Recurrent Head and Neck Cancer

Adam Luginbuhl, Alyssa Calder, David Kutler, Chad Zender, Trisha Wise-Draper, Jena Patel, Michael Cheng, Vidhya Karivedu, Tingting Zhan, Bhupesh Parashar, Shuchi Gulati, Min Yao, Pierre Lavertu, Vinita Takiar, Alice Tang, Jennifer Johnson, William Keane, Joseph Curry, David Cognetti, Voichita Bar-Ad, Adam Luginbuhl, Alyssa Calder, David Kutler, Chad Zender, Trisha Wise-Draper, Jena Patel, Michael Cheng, Vidhya Karivedu, Tingting Zhan, Bhupesh Parashar, Shuchi Gulati, Min Yao, Pierre Lavertu, Vinita Takiar, Alice Tang, Jennifer Johnson, William Keane, Joseph Curry, David Cognetti, Voichita Bar-Ad

Abstract

Introduction: Surgery is the primary treatment for resectable, non-metastatic recurrent head and neck squamous cell carcinoma (HNSCC). We explore the safety and oncologic benefit of intraoperative Cesium-131 (Cs-131) brachytherapy combined with salvage local and/or regional surgical resection.

Methods and materials: Findings were reported from a single arm multi-institutional prospective phase 1/2 trial involving surgery plus Cs-131 (surgery + Cs-131) treatment. The results of two retrospective cohorts-surgery alone and surgery plus intensity modulated radiation therapy (surgery + ReIMRT)-were also described. Included patients had recurrent HNSCC and radiation history. Safety, tumor re-occurrence, and survival were evaluated.

Results: Forty-nine patients were enrolled in the surgery + Cs-131 prospective study. Grade 1 to 3 adverse events (AEs) occurred in 18 patients (37%), and grade 4 AEs occurred in 2 patients. Postoperative percutaneous endoscopic gastrostomy (PEG) tubes were needed in 10 surgery + Cs-131 patients (20%), and wound and vascular complications were observed in 12 patients (24%). No cases of osteoradionecrosis were reported in the surgery + Cs-131 cohort. We found a 49% 2-year disease-free survival at the site of treatment with a substantial number of patients (31%) developing metastatic disease, which led to a 31% overall survival at 5 years.

Conclusions: Among patients with local/regional recurrent HNSCC status-post radiation, surgery + Cs-131 demonstrated acceptable safety with compelling oncologic outcomes, as compared to historic control cohorts.

Clinical trial registration: ClinicalTrials.gov, identifiers NCT02794675 and NCT02467738.

Keywords: Cesium-131; brachytherapy; head and neck cancer; recurrent; reirradiation head and neck; surgery.

Conflict of interest statement

The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

Copyright © 2021 Luginbuhl, Calder, Kutler, Zender, Wise-Draper, Patel, Cheng, Karivedu, Zhan, Parashar, Gulati, Yao, Lavertu, Takiar, Tang, Johnson, Keane, Curry, Cognetti and Bar-Ad.

Figures

Figure 1
Figure 1
Intraoperative adjustments were made for placement around major vessels, nerves, and bone. Components of the harvested flap were utilized to avoid direct contact of the Cs-131 seeds with critical structures, including the carotid artery.

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Source: PubMed

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