SPAG17 and primary ciliary dyskinesia: Interestingly, a cluster formed by 12 elements, including WDR63, DNAH3, DNAI1, TTC18, SPAG17, TTC25, and CCDC113, was found to be a cluster related to primary ciliary dyskinesia and COPI-independent Golgi-to-ER (Cluster 10689, STRING False Discovery Rate: 1.0–12) (Figure S1).