Abstract
Catel-Manzke syndrome is characterized by Pierre Robin sequence and a unique form of bilateral hyperphalangy causing a clinodactyly of the index finger. We describe the identification of homozygous and compound heterozygous mutations in TGDS in seven unrelated individuals with typical Catel-Manzke syndrome by exome sequencing. Six different TGDS mutations were detected: c.892A>G (p.Asn298Asp), c.270-271del (p.Lys91Asnfs∗22), c.298G>T (p.Ala100Ser), c.294T>G (p.Phe98Leu), c.269A>G (p.Glu90Gly), and c.700T>C (p.Tyr234His), all predicted to be disease causing. By using haplotype reconstruction we showed that the mutation c.298G>T is probably a founder mutation. Due to the spectrum of the amino acid changes, we suggest that loss of function in TGDS is the underlying mechanism of Catel-Manzke syndrome. TGDS (dTDP-D-glucose 4,6-dehydrogenase) is a conserved protein belonging to the SDR family and probably plays a role in nucleotide sugar metabolism.
| Originalsprache | Englisch |
|---|---|
| Zeitschrift | American Journal of Human Genetics |
| Jahrgang | 95 |
| Ausgabenummer | 6 |
| Seiten (von - bis) | 763-770 |
| Seitenumfang | 8 |
| ISSN | 0002-9297 |
| DOIs | |
| Publikationsstatus | Veröffentlicht - 01.01.2014 |
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