marginal significancep < 1 × 10 −5
Four SNPs showed associations with post-RT pain at the marginal significance level of p < 1 × 10 −5 ; rs16970540 in ring finger and FYVE-like domain containing E3 ubiquitin protein ligase ( RFFL) or near to DNA ligase 3 ( LIG3 ) gene ( p = 1.7 × 10 −6 ), rs4584690, and rs7335912 in ATP-binding cassette, sub-family A, member 4 ( ABCC4)/ multidrug resistance protein 4 (MRP4) gene ( p = 5.5 × 10 −6 and p = 7.8 × 10 −6 , respectively), and rs73633565 in epidermal growth factor-like protein 6 ( EGFL6 ) gene ( p = 8.1 × 10 −6 ).