A case of Shwachman-Diamond syndrome confirmed with genetic analysis in a Korean child.
Shwachman-Diamond syndrome (SDS) is an autosomal recessive genetic disorder, consisting of exocrine pancreatic insufficiency, chronic neutropenia, neutrophil chemotaxis defects, metaphyseal dysostosis, short stature, dental caries, and multiple organ involvements. Although SDS is the second most common hereditary abnormality of exocrine pancreas following cystic fibrosis in the Western countries, it has rarely been reported in Asia. We diagnosed a case of SDS in a 42-month-old girl, and genetic analysis including the relatives of the patient confirmed the diagnosis for the first time in Korea. She had short stature, steatorrhea, dental caries, and recurrent prulent otitis media and pneumonias. Laboratory studies revealed cyclic neutropenia, and serum levels of trypsin, amylase, and lipase were decreased. Simple radiography revealed metaphyseal sclerotic changes at the distal femur. A CT scan demonstrated a fatty infiltration and atrophy of the pancreas. On direct sequencing analysis of Shwachman-Bodian-Diamond Syndrome gene exon 2 region, the patient was homozygous for the c.258+2T>C mutation and heterozygous for the c.183_184TA>CT mutation and c.201A>G single nucleotide polymorphism. Treatment with pancreatic enzyme replacement, multivitamin supplementation, and regular to high fat diet improved her weight gain and steatorrhea.
Lee
Jeong Hee
JH
Department of Pediatrics, Konkuk University School of Medicine, Seoul, Korea.
Bae
Sun Hwan
SH
Yu
Jeong Jin
JJ
Lee
Ran
R
Yun
Yeo Min
YM
Song
Eun Young
EY
D002675:Child, Preschool; D003731:Dental Caries / Q000235:genetics*; D004413:Dysostoses / Q000235:genetics*; D010188:Exocrine Pancreatic Insufficiency / Q000235:genetics*; D005260:Female; D006801:Humans; D009154:Mutation; D009503:Neutropenia / Q000235:genetics*; D010375:Pedigree; D013577:Syndrome