Fig. 1. Minigene splice assays for variants c.2256 C > T and c.2276 G > T.
a A minigene splice assay was performed with a construct spanning from USH2A intron 11 to intron 13 (6,814 nt), containing either c.2276 G > T or both variants (c.[2256 T > C;2276 G > T]). b A single RT-PCR product of 1112 nt was observed after expression of both splice vectors, indicative of the incorporation of USH2A exons 12 and 13 between RHO exons 3 and 5 in both transcripts. c Sanger sequencing confirmed that USH2A exon 12 and exon 13 were correctly incorporated in the mRNA.