CPLANE1 and polydactyly: In the UW cohort, polydactyly, which is present in 56 out of 387 (15%) of JS individuals, was significantly correlated only with biallelic variants in CPLANE1 and TCTN2, but also observed in single or few patients with other gene variants (Bachmann‐Gagescu, Dempsey, et al., 2015).