| A recently described syndrome with characteristics of developmental delay, microcephaly, short stature, heart defects and limb abnormalities. The syndrome is caused by an interstitial deletion encompassing 17q23.1q23.2. The underlying mechanism is non-allelic homologous recombination. Parental FISH testing in five of the seven cases confirmed a de novo origin. The minimal deletion region of 2.2 Mb encompasses 2 transcription factors, TBX2 and TBX4, which are good candidate genes for explaining the phenotype. |
