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The cisplatin and gemcitabine regimen is one of the most effective regimens against advanced non-small-cell lung cancer. However, tumors that are initially sensitive to chemotherapy treatment may acquire drug resistance. Excision repair cross complementation 1 gene (ERCC1) is involved in the repair of DNA damage caused by cisplatin, and ribonucleotide reductase M1 subunit (RRM1) is associated with gemcitabine resistance in tumor cells. The current study reports the case of a patient with advanced squamous cell lung carcinoma exhibiting low ERCC1 and RRM1 expression levels, who experienced long-term survival following repeated responses to gemcitabine and cisplatin chemotherapy. This case indicates that selected patients may benefit from multiple courses of gemcitabine and cisplatin chemotherapy, and the sustained clinical benefits suggest that further investigation into individualized therapy is merited.

oncology letters

Advanced squamous lung carcinoma in a patient experiencing long-term survival following repeated responses to gemcitabine and cisplatin chemotherapy: A case report