Figure 1. Diagram of the location and base pair distance between the seven common mutations in ABCA4 (accession sequence NM_000350.3) used in a diagnostic screening test for STGD in South Africa, namely, c.454C>T, c.768G>T, c.1804C>T, c.2588G>C, c.4469G>A, c.5461–10T>C, and c.6079C>T, as well as the variant of interest in this study, c.5603A>T.