Pedigree and sequencing chromatograms for family 38 (FAM83H, p.Q677X) and oral photographs and radiographs of the proband. This 3-yr-old Caucasian boy showed hypocalcified amelogenesis imperfecta (AI) in his primary dentition. (A) Maxillary occlusal, (B) mandibular occlusal, (C) frontal, (D) left buccal, (E) right buccal, (F) radiographs, (G) DNA-sequencing chromatograms showing a C/T doublet demonstrating the c.2029C > T mutation in the proband, but not in the unaffected mother, and (H) a pedigree showing the autosomal-dominant pattern of inheritance (a dot marks each person recruited in the study).