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Clinical and genetic manifestations of the proband. (A) Dental caries. (B) Ankyloglossia. (C) Heart‐shaped tongue. (D) Pedigree of the proband. Black indicates family members with hearing loss. (E) Genetic sequencing result of c.339‐18C>T of P2RX2 gene. (F) Genetic sequencing result of c.539A>T of TSPEAR gene. (G) Genetic sequencing result of c.365G>A of TSPEAR gene. The red arrows indicate the mutated bases. WT means wild type.
