Meng et al. demonstrated through the study of liver organoids and Klebsiella pneumoniae that Klebsiella pneumoniae plays a key role in post-Kasai cholangitis, and mediates the potential mechanism of liver fibrosis through the interleukin 13/transforming growth factor beta 1 (IL-13/TGF-β1) pathway [177]. The gene discussed is IL13; the disease is Hepatic fibrosis.