HAMP and anemia (phenotype): 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.