Expanding the clinical spectrum of mitochondrial 3-hydroxy-3-methylglutaryl-CoA synthase deficiency with Turkish cases harboring novel HMGCS2 gene mutations and literature review

Kilic M., Dorum S., Topak A., Yazici M., EZGÜ F. S., COŞKUN T.

AMERICAN JOURNAL OF MEDICAL GENETICS PART A, cilt.182, sa.7, ss.1608-1614, 2020 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Derleme
  • Cilt numarası: 182 Sayı: 7
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1002/ajmg.a.61590
  • Dergi Adı: AMERICAN JOURNAL OF MEDICAL GENETICS PART A
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, BIOSIS, CAB Abstracts, EMBASE, MEDLINE
  • Sayfa Sayıları: ss.1608-1614
  • Anahtar Kelimeler: 3-hydroxy-3-methylglutaryl-CoA synthase deficiency, encephalopathy, HMG-CoA synthase deficiency, HMGCS2, hypoglycemia, DIAGNOSIS
  • Gazi Üniversitesi Adresli: Evet

Özet

Mitochondrial 3-hydroxy-3-methylglutaryl-CoA synthase (mHS) deficiency is a very rare autosomal recessive inborn error of ketone body synthesis and presents with hypoketotic hypoglycemia, metabolic acidosis, lethargy, encephalopathy, and hepatomegaly with fatty liver precipitated by catabolic stress. We report acute presentation of two patients from unrelated two families with novel homozygous c.862C>T and c.725-2A>C mutations, respectively, in HMGCS2 gene. Affected patients had severe hypoketotic hypoglycemia, lethargy, encephalopathy, severe metabolic and lactic acidosis and hepatomegaly after infections. Surprisingly, molecular screening of the second family showed more affected patients without clinical findings. These cases expand the clinic spectrum of this extremely rare disease.