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The cardio-facio-cutaneous (CFC) syndrome: autosomal dominant inheritance in a large family
J P Fryns1, P Volcke, H Van den Berghe
1Center for Human Genetics, University of Leuven, Belgium.
Genetic Counseling (Geneva, Switzerland)
|January 1, 1992
Insights
A family study provides strong evidence for autosomal dominant inheritance of cardio-faciocutaneous (CFC) syndrome. This finding challenges the distinction between CFC syndrome and Noonan syndrome.
Area of Science:
- Genetics
- Clinical Medicine
- Dermatology
Background:
- Cardio-faciocutaneous (CFC) syndrome is a rare genetic disorder.
- It is characterized by specific facial features, heart defects, and skin abnormalities.
- The genetic basis and nosological classification of CFC syndrome remain areas of active research.
Purpose of the Study:
- To report a large, three-generation family with a clear pattern of autosomal dominant inheritance of CFC syndrome.
- To evaluate the diagnostic criteria and genetic overlap between CFC syndrome and Noonan syndrome.
Main Methods:
- Pedigree analysis was conducted over three generations.
- Clinical examinations and genetic assessments were performed on affected family members.
Main Results:
- Autosomal dominant transmission of CFC syndrome was firmly established within the family.
- Clinical phenotypes exhibited significant overlap with features typically associated with Noonan syndrome.
Conclusions:
- The findings suggest a potential blurring of the lines between CFC syndrome and Noonan syndrome.
- Further research is warranted to clarify the genetic and clinical distinctions between these related RASopathies.
Abstract:
A large, three generation-family with firm evidence of autosomal dominant transmission of the cardio-faciocutaneous (CFC) syndrome is reported. This observation questions once more the validity of separating the CFC syndrome from the Noonan syndrome as two distinct entities.