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Case Reports
. 2005 Apr 1;134A(1):74-6.
doi: 10.1002/ajmg.a.30277.

Isolated ectrodactyly caused by a heterozygous missense mutation in the transactivation domain of TP63

Juan Carlos Zenteno  1 , Valeria Berdón-Zapata, Susana Kofman-Alfaro, Osvaldo M Mutchinick
Affiliations
Case Reports

Isolated ectrodactyly caused by a heterozygous missense mutation in the transactivation domain of TP63

Juan Carlos Zenteno et al. Am J Med Genet A. .

Abstract

We report a Mexican boy with isolated ectrodactyly (split hand malformation) in whom a new mutation was identified in exon 3 of the TP63 gene. In contrast to previously reported patients with isolated split hand/foot anomaly and mutations in the DNA binding domain of Tp63, the mutation described herein induce an amino acid substitution (R97C) in the canonical transactivation (TA) domain. To our knowledge, this is the first naturally occurring mutation described so far in this part of the protein. Based on the genotype-phenotype correlation observed in our patient, we hypothesize that integrity of the TA domain of Tp63 is critical for normal limb development.

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