Among the five additional genotypes analyzed, two genetic variations in the XRCC1 (c.1196G>A, rs25487) and MDR1 (c.3435C>T, rs1045642) genes displayed a trend supportive of their potential association with tumor response (p = 0.050 and 0.056, respectively, Fisher’s exact test, Table 4). The gene discussed is XRCC1; the disease is neoplasm.