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Combination treatment of arsenic trioxide and osimertinib in recurrent and metastatic head and neck squamous cell carcinoma.


ABSTRACT: Recurrent and/or metastatic (R/M) head and neck squamous cell carcinoma (HNSCC) represents an advanced stage of the disease and frequently shows resistance to these current treatments, including platinum chemotherapy, cetuximab plus chemotherapy, and checkpoint inhibitors. EGFR overexpression and TP53 mutation are the most frequent genetic changes in patients with HNSCC. On the basis of this genetic feature, we proposed a combinatorial treatment using the EGFR tyrosine kinase inhibitor osimertinib (AZD) and arsenic trioxide (ATO) for compassionate use. The patient obtained treatment response and progression-free survival for about six months. In vitro mechanical verifications showed that ATO and AZD combination (ATO/AZD) significantly increased intracellular ROS levels and DNA damage. Additionally, ATO/AZD decreases the expression and activity of breast cancer type 1 susceptibility protein (BRCA1) and polo-like kinase 1 (PLK1), thereby impairing Rad51 recruitment to DNA double-strand lesion for repair and may ultimately cause tumor cell death. In conclusion, this study provides a concrete experience and an alternate strategy of ATO/AZD therapy for patients with R/M HNSCC.

SUBMITTER: Hsieh CY 

PROVIDER: S-EPMC9729903 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature

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Combination treatment of arsenic trioxide and osimertinib in recurrent and metastatic head and neck squamous cell carcinoma.

Hsieh Ching-Yun CY   Chang Wei-Chao WC   Lin Ching-Chan CC   Chen Jong-Hang JH   Lin Chen-Yuan CY   Liu Chia-Hua CH   Lin Chen C   Hung Mien-Chie MC  

American journal of cancer research 20221115 11


Recurrent and/or metastatic (R/M) head and neck squamous cell carcinoma (HNSCC) represents an advanced stage of the disease and frequently shows resistance to these current treatments, including platinum chemotherapy, cetuximab plus chemotherapy, and checkpoint inhibitors. EGFR overexpression and <i>TP53</i> mutation are the most frequent genetic changes in patients with HNSCC. On the basis of this genetic feature, we proposed a combinatorial treatment using the EGFR tyrosine kinase inhibitor os  ...[more]

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