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Assessing Postnatal Mortality in Smith-Lemli-Opitz Syndrome
Aishwarya Selvaraman1, Samar Rahhal1, Simona Bianconi1
1Division of Translational Medicine, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland, USA.
American Journal of Medical Genetics. Part A
|September 13, 2024
Summary
Smith-Lemli-Opitz syndrome (SLOS) is a rare genetic disorder. Research shows higher mortality risk with increased severity and lower cholesterol levels in SLOS patients.
Area of Science:
- Genetics
- Biochemistry
- Pediatrics
Background:
- Smith-Lemli-Opitz syndrome (SLOS) is a rare autosomal recessive disorder.
- It stems from pathological variants in the DHCR7 gene, impairing 7-dehydrocholesterol reductase activity.
- This leads to cholesterol precursor accumulation and low cholesterol levels, causing developmental and physical challenges.
Purpose of the Study:
- To investigate postnatal mortality risk factors in individuals with Smith-Lemli-Opitz syndrome.
- To improve monitoring and prevention strategies for SLOS patients.
Main Methods:
- Utilized death certificate data from the National Death Index (NDI).
- Analyzed a cohort of SLOS patients enrolled in NIH Clinical Center natural history studies (NCT00001721, NCT05047354).
Main Results:
- While premature death occurs in SLOS, many individuals survive into adulthood.
- Postnatal mortality risk correlates with higher disease severity scores.
- Lower initial cholesterol levels are associated with increased mortality risk.
Conclusions:
- SLOS survival into adulthood is possible for many individuals.
- Disease severity and cholesterol levels are significant predictors of postnatal mortality risk in SLOS.
- Further research into SLOS mortality factors can enhance patient care and outcomes.
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