Severe infantile hypotonia with ethylmalonic aciduria: Case report

Çetin Okuyaz, Fatih Süheyl Ezgü, Gürsel Biberoǧlu, Massimo Zeviani, Valeria Tiranti, Esat Yilgör

Research output: Contribution to journalArticlepeer-review


An 8-month-old girl was admitted to an outpatient clinic with significant hypotonia and weakness. Organic acid analysis in urine revealed a significant increase in ethylmalonic acid. A deoxyribonucleic analysis revealed the presence of a 625G>A (G-to-A substitution at nucleotide 625) variant short-chain acyl-coenzyme A dehydrogenase gene polymorphism. With the clinical, biochemical and molecular findings, short-chain acyl-coenzyme A dehydrogenase deficiency was suspected. Because 625G>A and 511C>T (C-to-T substitution at nucleotide 511) genetic variations are also present in 14% of the general population, these are considered to be genetic sensitivity variations rather than causing a disease themselves and to result in possible short-chain acyl-coenzyme A dehydrogenase deficiency in the presence of environmental factors such as fever and hunger as well as cellular, biochemical, and other genetic factors. It was stressed that severe infantile hypotonia could also be the only manifestation of ethylmalonic aciduria spectrum disorders.

Original languageEnglish
Pages (from-to)703-705
Number of pages3
JournalJournal of Child Neurology
Issue number6
Publication statusPublished - Jun 2008


  • Ethylmalonic aciduria
  • Hypotonia
  • Short-chain acyl-coenzyme A dehydrogenase deficiency

ASJC Scopus subject areas

  • Clinical Neurology
  • Pediatrics, Perinatology, and Child Health


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