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Mutations in the human TBX4 gene cause small patella syndrome.

ABSTRACT: Small patella syndrome (SPS) is an autosomal-dominant skeletal dysplasia characterized by patellar aplasia or hypoplasia and by anomalies of the pelvis and feet, including disrupted ossification of the ischia and inferior pubic rami. We identified an SPS critical region of 5.6 cM on chromosome 17q22 by haplotype analysis. Putative loss-of-function mutations were found in a positional gene encoding T-box protein 4 (TBX4) in six families with SPS. TBX4 encodes a transcription factor with a strongly conserved DNA-binding T-box domain that is known to play a crucial role in lower limb development in chickens and mice. The present identification of heterozygous TBX4 mutations in SPS patients, together with the similar skeletal phenotype of animals lacking Tbx4, establish the importance of TBX4 in the developmental pathways of the lower limbs and the pelvis in humans.

SUBMITTER: Bongers EM

PROVIDER: S-EPMC1182087 | biostudies-literature | 2004 Jun

REPOSITORIES: biostudies-literature

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Mutations in the human TBX4 gene cause small patella syndrome.

Bongers Ernie M H F EM Duijf Pascal H G PH van Beersum Sylvia E M SE Schoots Jeroen J Van Kampen Albert A Burckhardt Andreas A Hamel Ben C J BC Losan Frantisek F Hoefsloot Lies H LH Yntema Helger G HG Knoers Nine V A M NV van Bokhoven Hans H

American journal of human genetics 20040421 6

Small patella syndrome (SPS) is an autosomal-dominant skeletal dysplasia characterized by patellar aplasia or hypoplasia and by anomalies of the pelvis and feet, including disrupted ossification of the ischia and inferior pubic rami. We identified an SPS critical region of 5.6 cM on chromosome 17q22 by haplotype analysis. Putative loss-of-function mutations were found in a positional gene encoding T-box protein 4 (TBX4) in six families with SPS. TBX4 encodes a transcription factor with a strongl ...[more]

PMID: 15106123

Dataset Information

Mutations in the human TBX4 gene cause small patella syndrome.

Publications

Mutations in the human TBX4 gene cause small patella syndrome.

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