Pathogenicity of NUSAP1 Variants Is Defined by NMD-Escape: Evidence From Two Novel Cases and Systematic Population-Based Variant Analysis.
A critical region at the 3' region of NUSAP1 is delineated, where nonsense variants introduce a premature termination codon and escape NMD, which is absent from healthy controls, while frameshift variants producing C-terminal elongations appear tolerated.