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Ectopia lentis et pupillae syndrome in three generations
1Institute of Ophthalmology, University Hospital Nijmegen, The Netherlands.
The British Journal of Ophthalmology
|February 1, 1995
Summary
This study identifies key features of ectopia lentis et pupillae syndrome across three generations, challenging its typical autosomal recessive inheritance pattern. Findings suggest a possible autosomal dominant mode with reduced penetrance in this family.
Area of Science:
- Ophthalmology
- Medical Genetics
Background:
- Ectopia lentis et pupillae syndrome is a rare genetic disorder affecting the eye.
- It is typically inherited in an autosomal recessive manner.
Observation:
- Nine individuals across three generations and a distant relative exhibited key syndrome characteristics.
- These included ectopia lentis, ectopia pupillae, persistent pupillary membrane, iris transillumination, and poor pupillary dilatation.
- All patients developed bilateral cataracts before age 40, with two experiencing acute intraocular hypertensive crises.
Findings:
- The high prevalence within a single family and across generations is exceptional.
- Observed mother-to-son and mother-to-daughter transmission contradicts the presumed autosomal recessive inheritance.
- Pedigree analysis suggests autosomal dominant inheritance with reduced penetrance.
Implications:
- This family's presentation challenges the established inheritance pattern for ectopia lentis et pupillae syndrome.
- Further research is needed to understand the genetic basis and variable expressivity of this syndrome.
- Identifying the specific genetic mutation could aid in diagnosis and genetic counseling.