P4HB and skeletal dysplasia: Notably, mutations in SUCO and P4HB have been linked to skeletal dysplasia (Rauch et al, 2015; Ouyang & Yang, 2017; Balasubramanian et al, 2018; Maddirevula et al, 2018; Porntaveetus et al, 2018; Li et al, 2019) in humans, which aligns with the TAPT1 loss‐of‐function clinical presentation.