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  • Title: Identification of a novel frameshift mutation (383insT) in the RUNX2 (PEBP2 alpha/CBFA1/AML3) gene in a Japanese patient with cleidocranial dysplasia.
    Author: Goseki-Sone M, Orimo H, Watanabe A, Hamatani R, Yokozeki M, Ohyama K, Kuroda T, Watanabe H, Miyazaki H, Shimada T, Oida S.
    Journal: J Bone Miner Metab; 2001; 19(4):263-6. PubMed ID: 11448020.
    Abstract:
    Cleidocranial dysplasia (CCD) is an autosomal dominant disorder due to mutations in runt-related gene 2 (RUNX2)/polyomavirus enhancer-binding protein 2alphaA (PEBP2alphaA)/core-binding factor A1 (CBFA1)/acute myeloid leukemia 3 (AML3). To investigate the RUNX2 mutations in a Japanese patient with classic CCD, we analyzed the RUNX2 gene using polymerase chain reaction (PCR)-single-strand conformation polymorphism and PCR-restriction fragment length polymorphism. The patient had hypoplasia of the clavicles, patent fontanelles, short stature, supernumerary teeth, and retention of deciduous dentition. We identified a 1-bp insertion (383insT) at codon 128 of the RUNX2 gene. The 383T insertion affects the conserved residue in the runt domain and results in premature termination in the runt domain.
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