Other studies have demonstrated that mutations in FOXA2, GPC1, ADD3, PKD1L1, EFEMP1/3, STIP1, XPNPEP1, REV1 and JAG1 genes can increase an individual’s genetic susceptibility to biliary atresia (Cui et al., 2013; Tsai et al., 2014; Tsai et al., 2015; Rajagopalan et al., 2020; Davenport et al., 2021). Here, ADD3 is linked to biliary atresia.