KAT2B and Infertility: Pathways analyses were carried out online using STRING https://string-db.org/ and revealed that estrogenic hypomethylated Alu sequences in the YOPRO+ sperm fraction of infertile patients were associated with an enrichment of the histone acetyltransferase complex, with the SAGA-complex (Spt-Ada-Gcn5 acetyltransferase), with the PCAF-complex (P300/CBP-associated factor), and with the STAGA-pre-snoRNP-complex (GO:0000123, GO:0000124, GO:0000125, GO:0030914, GO:0033276, GO:0070761, respectively) due to the association with the AK6 and TAF9 genes.