XRCC1 and non-small cell lung carcinoma: However, three studies carried out in 161 advanced NSCLC patients 5 and 82 advanced NSCLC patients 28 who underwent platinum‐based chemotherapy, as well as in 74 advanced NSCLC patients treated with platinum‐based chemotherapy and additionally received concomitant or sequential radiotherapy 29, respectively, failed to identify significant associations between XRCC1 rs25487 and survival outcomes.