After conducting a keyword search on 23 September 2022: (1) (lung cancer OR lung neoplasms OR lung tumour) AND (anaemia OR anemia), we found 3547 results; (2) (lung cancer OR lung neoplasms OR lung tumour) AND (anaemia OR anemia) AND chemotherapy, we found 2282 results; (3) (lung cancer OR lung neoplasms OR lung tumour) AND (anaemia OR anemia) AND radiotherapy, we found 316 results; (4) (lung cancer OR lung neoplasms OR lung tumour) AND hepcidin, we found 22 results, compared to 432,949 results after searching for lung cancer OR lung tumour OR lung neoplasm. The gene discussed is HAMP; the disease is lung cancer.