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Brachydactyly type A-7 (Smorgasbord): a new entity.
S A Meiselman1, M Berkenstadt, T Ben-Ami
1Institute of Medical Genetics, Chaim Sheba Medical Center, Tel Hashomer, Israel.
Clinical Genetics
|April 1, 1989
Summary
Researchers identified a new brachydactyly syndrome in a family, exhibiting features of types A2 and D, alongside novel characteristics. This distinct presentation has been named brachydactyly type A7 (Smorgasbord).
Area of Science:
- Genetics
- Medical Genetics
- Skeletal Dysplasias
Background:
- Brachydactyly encompasses a diverse group of congenital limb malformations.
- Existing classifications include types A, B, C, and D, each with distinct phenotypic features.
- Genetic heterogeneity contributes to the wide spectrum of brachydactyly presentations.
Purpose of the Study:
- To describe a novel brachydactyly syndrome observed in a single family.
- To characterize the unique combination of digital anomalies present in affected individuals.
- To establish a new classification for this distinct brachydactyly phenotype.
Main Methods:
- Clinical examination of affected family members.
- Detailed anthropometric measurements of the hands and feet.
- Review of existing literature and classification systems for brachydactyly.
Main Results:
- The family presented with a complex brachydactyly phenotype.
- Features overlapped with brachydactyly types A2 and D.
- Unique digital anomalies not previously described in other brachydactyly types were observed.
- This constellation of findings represents a previously unrecognized syndrome.
Conclusions:
- A new brachydactyly syndrome, termed brachydactyly type A7 (Smorgasbord), has been identified.
- This syndrome is characterized by a unique combination of digital abnormalities.
- Further research is warranted to elucidate the genetic basis and precise classification of brachydactyly type A7.