MORC4 is a chrX-associated zinc finger protein that functions as a histone methylation reader with preference for H3K4me3 over H3K4me2, H3K4me1, and H3K4me0 1. Mechanistically, MORC4 possesses ATPase activity dependent on both its ATPase and CW domains, which cooperatively bind nucleosome core particles and enhance DNA wrapping around the histone core, thereby impeding transcription factor binding 2. This activity promotes nuclear body formation and S-phase progression 2. MORC4 also interacts with PCGF1, a transcriptional repressor of the cell cycle inhibitor CDKN1A, augmenting PCGF1's suppressive effects 3. Genetically, MORC4 variants (rs12688220) associate with acute and chrX pancreatitis susceptibility, particularly in Caucasians and Asian populations 456. In cancer, MORC4 is significantly upregulated in colorectal and breast cancer tissues 78, where its overexpression correlates with poor prognosis and enhanced tumor cell proliferation and metastasis 38. miR-193b-3p negatively regulates MORC4 expression in breast cancer 8. These findings suggest MORC4 represents both a disease susceptibility locus and a potential therapeutic target in inflammation and malignancy.