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Clinical Orthopaedics and Related Research®

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01.12.2010 | Clinical Research

RUNX2 Polymorphisms Associated with OPLL and OLF in the Han Population

verfasst von: Yang Liu, MD, Yongfei Zhao, MD, Yu Chen, MD, Guodong Shi, MD, Wen Yuan, MD

Erschienen in: Clinical Orthopaedics and Related Research® | Ausgabe 12/2010

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Abstract

Background

Runt-related transcription factor 2 (RUNX2), BMP-2, COL6A1, and VDR are four genes that may be related to ossification of the spinal ligament. However, their pathogenetic relevance remains unclear. Most cases of ossification of the posterior longitudinal ligament (OPLL) and ossification of the ligamentum flavum (OLF) have been reported in Asian populations, but the polymorphic loci in these genes may vary among people of different races.

Purposes

We identified (1) polymorphic loci in four genes (RUNX2, BMP-2, COL6A1, and VDR) in OPLL and OLF in Chinese Han patients and (2) identified loci related to these diseases.

Methods

We analyzed 19 single nucleotide polymorphisms (SNPs) in four candidate genes in 200 Han individuals (82 patients and 118 control subjects) by the Sequenom system. The genotype distribution and allele frequency of each SNP in the control and patient groups were compared. We then determined the relationships between the loci and the occurrence of OPLL and OLF.

Results

Genotyping showed RS1321075 and RS12333172 in RUNX2 differed between the patients and the control subjects. Both loci were located on chromosome 6 and exhibited linkage disequilibrium. One of the two blocks was a haplotype, thus suggesting a link between this block and increased incidence of OPLL and OLF.

Conclusion

Although the detailed mechanism of the SNP is unclear, our data suggest RUNX2 could be responsible for ectopic bone formation in the spinal ligament in the Chinese Han population. However, we found no obvious connection between polymorphic loci of COLA1, BMP-2, and VDR and the diseases.

Clinical Relevance

Molecular genetic studies have identified several candidate genes that may be responsible for increased susceptibility to the diseases. Information regarding SNPs among the certain candidate genes may improve understanding of the disease and assist in developing new diagnostic gene tools during early episodes of the disease.

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Titel: RUNX2 Polymorphisms Associated with OPLL and OLF in the Han Population
verfasst von: Yang Liu, MD
Yongfei Zhao, MD
Yu Chen, MD
Guodong Shi, MD
Wen Yuan, MD
Publikationsdatum: 01.12.2010
Verlag: Springer-Verlag
Erschienen in: Clinical Orthopaedics and Related Research® / Ausgabe 12/2010
Print ISSN: 0009-921X
Elektronische ISSN: 1528-1132
DOI: https://doi.org/10.1007/s11999-010-1511-5

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RUNX2 Polymorphisms Associated with OPLL and OLF in the Han Population

Abstract

Background

Purposes

Methods

Results

Conclusion

Clinical Relevance

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Abstract

Background

Purposes

Methods

Results

Conclusion

Clinical Relevance

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