IGV display of the 1-bp deletion in TTC8 (c.669delA). Each of the three samples (PRA-affected, obligate carrier and control) viewed in IGV are represented by two panels. The upper panel is a histogram where the height of each column is representative of the read depth at that location. The lower panel is a graphical view of some of the reads that align to that location. The “A” base indicated is absent in almost all reads in the PRA-affected sample, approximately half the reads in the obligate carrier and sample and none of the reads in the PRA-unaffected (control) sample.