Smith-Lemli-Opitz syndrome (SLOS) is caused by a deficiency in the enzyme 7-dehydrocholesterol reductase (DHCR7) that results in an abnormality in cholesterol metabolism. SLOS is inherited as an autosomal recessive genetic disorder. In this case, we describe a 34-day-old patient with postnatal progressive projectile vomiting, diagnosed with hypertrophic pyloric stenosis, who was suspected to have SLOS during treatment clinical and biochemical profile. A 34-day-old patient with progressively worsening vomiting and abdominal distention, diagnosed as hypertrophic pyloric stenosis, was operated by pediatric surgery department. After operation, the patient required pediatric intensive care unit admission due to respiratory distress, anemia, hypoalbuminemia, and generalized edema. Physical examination of our patient revealed dysmorphic facial features, finger anomalies, sacral dimple, and ambiguous genitalia, with chromosomal determination as XY. Molecular genetic testing was performed, and mutations in the DHCR7 gene of homozygous c.1342G>A/p.Glu448Lys (rs80338864) were detected. Infants with progressive projectile vomiting, feeding problems, and multiple anomalies with dysmorphic facial anomalies may be suspected to have SLOS and their families should be advised to have genetic testing and genetic counseling.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8298070PMC
http://dx.doi.org/10.14744/SEMB.2020.34651DOI Listing

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