The function of ENSG00000243646 (IL10RB, interleukin 10 receptor subunit beta) is as follows. Shared cell surface receptor required for the activation of five class 2 cytokines: IL10, IL22, IL26, IL28, and IFNL1. The IFNLR1/IL10RB dimer is a receptor for the cytokine ligands IFNL2 and IFNL3 and mediates their antiviral activity. The ligand/receptor complex stimulate the activation of the JAK/STAT signaling pathway leading to the expression of IFN-stimulated genes (ISG), which contribute to the antiviral state. {ECO:0000269|PubMed:12469119, ECO:0000269|PubMed:15123776}.