HAMP and non-small cell lung carcinoma: To address this gap, we selected 13 potentially functional and tagging SNPs in BMP2 (rs1979855, rs170986, rs1980499, rs235768, rs3178250), BMP4 (rs4898820, rs762642, rs17563), Smad4 (rs12456284), and Hamp (rs1882694, rs10402233, rs10421768, rs12971321), hypothesizing that these SNPs in hepcidin regulatory BMP/Smad4/Hamp would be correlated with outcomes among patients with NSCLC after definitive radiotherapy.