Identifying multi-nucleotide variants associated with congenital hypotonia and global developmental delay
WGS identified a likely pathogenic, de novo variant in POLR2A, which has a strong association with the phenotype displayed by the individual. The variant was adjacent to a polymorphism variant that was inherited from one of the parents, and this caused their in-house pipeline to mis-identify it as an inherited MNV in the exome sequencing analysis. The WGS findings led to a positive finding that could be presented to the patient.
