Hypoketotic hypoglycemia without neuromuscular complications in patients with SLC25A32 deficiency

Bushra Al Shamsi, Fathiya Al Murshedi, Asila Al Habsi, Khalid Al-Thihli*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Mitochondrial flavin adenine dinucleotide (FAD) transporter deficiencies are new entities recently reported to cause a neuro-myopathic phenotype. We report three patients from two unrelated families who presented primarily with hypoketotic hypoglycemia. They all had acylcarnitine profiles suggestive of multiple acyl-CoA dehydrogenase deficiency (MADD) with negative next-generation sequencing of electron-transfer flavoprotein genes (ETFA, ETFB, and ETFDH). Whole exome sequencing revealed a homozygous c.272 G > T (p.Gly91Val) variant in exon 2 of the SLC25A32 gene. The three patients shared the same variant, and they all demonstrated similar clinical and biochemical improvement with riboflavin supplementation. To date, these are the first patients to be reported with hypoketotic hypoglycemia without the neuromuscular phenotype previously reported in patients with SLC25A32 deficiency.

Original languageEnglish
JournalEuropean Journal of Human Genetics
DOIs
Publication statusAccepted/In press - 2021
Externally publishedYes

ASJC Scopus subject areas

  • Genetics
  • Genetics(clinical)

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