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Parental genetic contribution to mode of presentation in Pompe disease
Insights
Pompe disease in infants can be linked to inherited heart conditions in parents. Asymmetric septal hypertrophy in parents may indicate a genetic predisposition for glycogen storage disease and outflow obstruction in their children.
Area of Science:
- Cardiology
- Genetics
- Pediatrics
Background:
- Pompe disease, a rare genetic disorder, can manifest in infants with severe cardiac complications.
- Infantile Pompe disease presents with either congestive cardiomyopathy or dynamic muscular subaortic stenosis.
- Investigating parental cardiac health is crucial for understanding the inheritance patterns of infantile Pompe disease.
Observation:
- Echocardiograms were conducted on parents of five infants diagnosed with Pompe disease.
- No cardiac murmurs were detected in any of the parents.
- While parents of infants without outflow obstruction showed normal echocardiograms, one parent of each infant with outflow obstruction exhibited asymmetric septal hypertrophy.
Findings:
- A significant association was observed between left ventricular outflow obstruction in infants and asymmetric septal hypertrophy in their parents.
- This suggests a potential inherited link between parental asymmetric septal hypertrophy and infantile Pompe disease with outflow obstruction.
- The findings indicate that both conditions may be inherited together from a parent.
Implications:
- Early identification of parental asymmetric septal hypertrophy could aid in predicting the risk of Pompe disease with cardiac complications in offspring.
- This research highlights the importance of comprehensive cardiac screening in families with a history of Pompe disease.
- Understanding the genetic transmission of cardiac abnormalities in Pompe disease can inform genetic counseling and management strategies.
Abstract:
Echocardiograms were performed on parents of five infants with Pompe disease (glycogen storage disease, type II). Three of the infants had presented with congestive cardiomyopathy and two with dynamic muscular subaortic stenosis. No heart murmurs were audible in any of the parents of the five infants. The parents of the three infants without left ventricular outflow tract obstruction had normal echocardiographic results, whereas one parent of each of the infants with left ventricular outflow obstruction had asymmetric septal hypertrophy. The association between left ventricular outflow obstruction and parental asymmetric septal hypertrophy suggests that both septal hypertrophy and glycogen storage disease were inherited by these two infants.