The genotype and allele frequencies of XPC 1496C>T, XPC 2920A>C, XPD 2251A>C, XPF-673C>T, XPF 11985A>G, and XPG 3507G>C and their association with the risk of developing MPN are shown in Table 5. Here, ERCC4 is linked to myeloproliferative disorder.