MGAT4A and endometrial cancer: For example, MGAT4A expression was high in gastrointestinal tissues, while MGAT4B was ubiquitously expressed.[53] In pancreatic cancer, MGAT4A was downregulated due to the promoter methylation, while MGAT4B was overexpressed.[54] Based on the IHC data from Human Protein Atlas endometrial cancer database, MGAT4A was overexpressed mainly in EC cells and MGAT4B was expressed in tumor stroma (Figure S2I, Supporting Information).