J Korean Pediatr Soc.  2003 May;46(5):505-509.

A Case of Lesch-Nyhan Syndrome

Affiliations
  • 1Department of Pediatrics, Chonnam National University Medical School, Gwangju, Korea. drkimjs@hanmail.net
  • 2Department of Pediatrics, College of Medicine, Yonsei University, Korea.
  • 3Department of Pediatrics, Medical Genetics Clinic & Laboratory, Asan Medical Center, Seoul, Korea.

Abstract

Lesch-Nyhan syndrome is an X-linked recessive disorder characterized by hyperuricemia, choreoathetosis, spasticity, mental retardation, and compulsive, self-injurious behavior. This disorder results from a complete deficiency of the purine salvage enzyme, hypoxanthine-guanine phosphoribosyl transferase(HPRT). We report here on a case of Lesch-Nyhan syndrome in a 1-year, 7-month-old male who presented with frequent vomiting, failure to thrive, and developmental delay. The diagnostic work-up revealed hyperuricemia, hyperuricosuria, and medullary nephrolithiasis. The HPRT activity in the erythrocytes was undetectable with a biochemical assay. We also identified de novo mutation which was a deletion of the 649th base, adenosine, in HPRT gene(649delA) by analysis of cDNA using RT-PCR technique coupled with direct sequencing.

Keyword

Lesch-Nyhan syndrome; Hypoxanthine guanine phosphoribosyl transferase(HPRT) gene; Hyperuricemia; Nephrolithiasis

MeSH Terms

Adenosine
DNA, Complementary
Erythrocytes
Failure to Thrive
Humans
Hyperuricemia
Hypoxanthine Phosphoribosyltransferase
Infant
Intellectual Disability
Lesch-Nyhan Syndrome*
Male
Muscle Spasticity
Nephrolithiasis
Self-Injurious Behavior
Vomiting
Adenosine
DNA, Complementary
Hypoxanthine Phosphoribosyltransferase
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