This complex was annotated as PCGF6-PRC1, and was shown to form stable complexes with several other well-known epigenetic factors such as RING1A/B, PCGF6, L3MBTL2 [lethal(3)malignant brain tumor-like 2], RYBP, YAF2, G9A (also known as EHMT2: euchromatic histone-lysine N-methyltransferase 2), GLP (G9a-like protein 1, also known as EHMT1), and CBX1/3 (Gao et al., 2012; Hauri et al., 2016; Kloet et al., 2016; Ogawa et al., 2002; Qin et al., 2012; Trojer et al., 2011). This evidence concerns the gene EHMT1 and brain neoplasm.