Re-irradiation for recurrent head and neck cancer: Freedom from cancer recurrence rate.

Authors

null

Issa Mohamad

Department of Radiation Oncology, King Hussein Cancer Center, Amman, Jordan

Issa Mohamad , Taher Abu Hejleh , Sania Abdelqader , Lina Wahbeh , Ayat Taqash , Abdelatif Al-Mousa , Ebrahim Mayta , Akram Al-Ibraheem , Fawzi Abuhijla , Ramiz Abu Hijlih , Tariq Hussein , Wisam Al-Gargaz , Hamza Ghatasheh , Ali Hosni

Organizations

Department of Radiation Oncology, King Hussein Cancer Center, Amman, Jordan, King Hussein Cancer Center, Amman, Jordan, Princess Margaret Cancer Centre, Toronto, ON, Canada

Research Funding

No funding received
None.

Background: Salvage re-irradiation (rRT) for patients with locoregionally recurrent head and neck cancer (rHNC) remains challenging. Methods: A retrospective analysis was performed on patients who received rRT between 2011 and 2018. The co-primary endpoint of the study was 2-year freedom from cancer recurrence rate (FCRR) and overall survival (OS), and secondary endpoints were 2-year disease free survival (DFS), local failure (LF), regional failure (RF), distant metastases (DM), and RTOG grade 3≥ late toxicities. Results: A total of 49 cases [nasopharygeal (n = 12); laryngeal (n = 12); oral cavity (n = 11); salivary gland (n = 9); and skin (n = 5)] were identified, adjuvant or definitive rRT were delivered to 22 and 27 patients, respectively. Various rRT fractionation schedules were used and 35/49 (71%) of patients received concurrent chemotherapy. The median follow-up after rRT was 30 months. The 2-year OS, DFS, LF, RF, and DM and FCRR were 64%, 51%, 28%, 32%, 9%, and 39% respectively. MVA showed that poor performance status (PS: 1-2 vs 0) and age > 52 years were predictive of worse OS. While, poor PS (1-2 vs 0) and total dose of rRT < 60Gy were predictive of worse DFS. Late RTOG toxicity of grade 3≥ was reported in 9(18.3%) patients. Conclusions: FCRR at 2 years after salvage rRT for rHNC was higher than other traditional endpoints and could be an important new endpoint to be included in the rRT studies. rRT for rHNC at our cohort was successful; with a manageable level of late sever toxicity.

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Abstract Details

Meeting

2023 ASCO Annual Meeting

Session Type

Publication Only

Session Title

Publication Only: Head and Neck Cancer

Track

Head and Neck Cancer

Sub Track

Local-Regional Disease

Citation

J Clin Oncol 41, 2023 (suppl 16; abstr e18077)

DOI

10.1200/JCO.2023.41.16_suppl.e18077

Abstract #

e18077

Abstract Disclosures