TP53 genetic heterogeneity in recurrent or second primary head and neck squamous cell carcinoma.

Kampel, Liyona; Feldstein, Sara; Tsuriel, Shlomo; Trejo, Leonor Leider; Horowitz, Gilad; Warshavsky, Anton; Mansour, Jobran; Hershkovitz, Dov et al. · Radiother Oncol · 2025

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Abstract

Head and neck squamous cell carcinomas (HNSCC) frequently recur, and patients often develop second primary tumors. Their distinction is clinically challenging. TP53 mutational heterogeneity may indicate novel molecular events rather than resistant clones' expansion or persistent disease. Surveillance and therapeutic strategies should be adjusted, especially in the case of a second primary arising in an already irradiated field.

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