A humanized model for studying pathogenic mutations in VPS45, a protein essential for membrane trafficking, associated with severe congenital neutropenia.

VPS45, one of the essential membrane trafficking factors, has been identified as a cause of severe congenital neutropenia 5 (SCN5), but its pathophysiological role remains unknown. Here, we developed a humanized model for three pathogenic VPS45 variants. We found that wild-type human VPS45 functionally complemented the loss of VPS-45 , and the pathogenic human VPS45 variants functioned almost normally with respect to larval development and endocytosis in .