Figure 1. The mapping of three probands' pedigrees. A: M1: CERKL c.1482delT (p.Val495fs*), M2: CERKL c.239–2A>G, slashes are drawn to carry a single mutant, and hatched areas are diseased proband; B: M3: RPRH2 c.-5_3dup (p.Ala2Glufs*6), hatched areas are diseased proband; C: M4. RPGR c.1539del (p.Lys513Asnfs*), hatched for diseased proband.