Background
Ribonucleotide reductase subunit M1 (RRM1) has emerged as a promising biomarker to predict the efficacy of gemcitabine. The
Conclusion
RRM1 IHC expression tailored selection of first-line therapy could improve therapeutic outcomes in patients with advanced NSCLC.
Methods
A single-institution study was conducted in patients with advanced NSCLC. In personalized therapy group, patients received chemotherapy based on RRM-1 IHC expression levels. Low RRM1 group received gemcitabine or gemcitabine/cisplatin, high RRM1 group received docetaxel or docetaxel/ cisplatin. In standard therapy group, non-customized chemotherapy was delivered. In this trial, Patients aged ⩾ 70 years received single agent chemotherapy, whereas patients below 70 had platinum-based chemotherapy.
Results
There were statistically significant improvements between the personalized therapy group versus the standard therapy group in disease control rate (82.9% vs 55.3%, P=0.004), and PFS (median: 5.5 months vs 3.0 months, P=0.005). Besides, the OS had a tendency to become more prolonged (median: 16.0 months vs 12.4 months, P=0.286). The subgroup analysis suggested the survival benefit in the elderly patients was more obvious.