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Auriculo-condylar syndrome. Confronting a diagnostic challenge
Nancy Mizue Kokitsu-Nakata1, Roseli Maria Zechi-Ceide, Siulan Vendramini-Pittoli
1Department of Clinical Genetics, Hospital of Rehabilitation of Craniofacial Anomalies, University of São Paulo (HRCA-USP), Bauru, SP, Brazil. nancykn@centrinho.usp.br
American Journal of Medical Genetics. Part A
|November 23, 2011
Summary
Auriculo-condylar syndrome (ACS) presents with distinct facial and jaw abnormalities. Genetic analysis in one family excluded known ACS1 markers, suggesting genetic heterogeneity for this rare condition.
Area of Science:
- Genetics
- Craniofacial biology
- Medical genetics
Background:
- Auriculo-condylar syndrome (ACS) is a rare congenital disorder.
- It is characterized by specific craniofacial anomalies including "question mark" ears, midface hypoplasia, microstomia, and temporomandibular joint abnormalities.
Observation:
- This report details a new simplex case of ACS.
- A previously unreported family with three affected generations is presented, highlighting significant clinical variability.
Findings:
- Linkage analysis for markers in the ACS1 candidate region (1p21.1-q23.3) was performed on the familial case.
- Exclusion of linkage in this region supports the hypothesis of genetic heterogeneity in Auriculo-condylar syndrome.
Implications:
- The findings underscore the importance of considering genetic heterogeneity in the diagnosis of ACS.
- Further research is needed to identify novel genetic loci associated with Auriculo-condylar syndrome.
- Understanding the genetic basis of ACS is crucial for accurate diagnosis and genetic counseling.
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