EEC syndrome sans clefting: variable clinical presentations in a family

Area of Science:

• Genetics
• Developmental Biology
• Medical Genetics

Background:

• Ectrodactyly, ectodermal dysplasia and cleft palate/lip syndrome (EEC) is a rare autosomal dominant disorder.
• It is characterized by variable expression and reduced penetrance, leading to diverse clinical presentations.
• Key features include ectrodactyly, ectodermal dysplasia, and cleft lip/palate.

Observation:

• A family with EEC syndrome, including father, daughter, and son, presented with syndactyly.
• Affected members displayed split hand-split foot deformity (ectrodactyly), epiphora, hair abnormalities, and hearing loss.
• The severity and specific manifestations of the syndrome varied among family members.

Findings:

• The study documented the presence of EEC syndrome in a three-generation family.
• Variable expressivity of ectrodactyly, ectodermal dysplasia, and associated anomalies was observed.
• Genetic counseling and management strategies need to consider intrafamilial variability.

Implications:

• Understanding the variable expression of EEC syndrome is crucial for accurate diagnosis and genetic counseling.
• This case underscores the importance of thorough clinical evaluation in families with suspected genetic syndromes.
• Further research into the genetic and environmental factors influencing EEC syndrome penetrance and expressivity is warranted.