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Genet Mol Res. 2011 Dec 14;10(4):3539-44. doi: 10.4238/2011.December.14.5.

A novel single-base deletion mutation of the RUNX2 gene in a Chinese family with cleidocranial dysplasia.

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Department of Stomatology, Xiangya Hospital, Central South University, Changsha, Hunan, China.


We identified a disease-causing mutation of the RUNX2 gene in a four-generation Chinese family affected with cleidocranial dysplasia (CCD). For mutation analysis, the coding region of RUNX2 was sequenced with DNA from two patients and three unaffected family members. The RUNX2 mutation was investigated in 50 normal controls by denaturing high pressure liquid chromatography. A heterozygous single-base deletion (c.549delC) of RUNX2, which predicts a termination site at the 185th codon and leads to a stop in the runt domain of RUNX2 protein, was detected in both patients but not in the three unaffected members of the family. This mutation was also not found in 50 controls and has not been reported previously. We demonstrated that a novel mutation (c.549delC) of RUNX2 is associated with CCD in a Chinese family, adding to the repertoire of RUNX2 mutations related to CCD.

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