ROR2 and brachydactyly type B1: Human mutations in ROR2 can cause Robinow syndrome (Afzal et al., 2000; Lima et al., 2022; Person et al., 2010; van Bokhoven et al., 2000; White et al., 2018), as well as Brachydactyly type B1 (Oldridge et al., 2000; Schwabe et al., 2000), including autosomal recessive forms resembling our ror2−/− mutant zebrafish.