Microarray based mutational analysis of patients with methylmalonic acidemia: Identification of 10 novel mutations


Dündar H., Özgül R. K. , Guzel-Ozanturk A., Dursun A., Sivri S., Aliefendioglu D., ...More

MOLECULAR GENETICS AND METABOLISM, vol.106, no.4, pp.419-423, 2012 (Peer-Reviewed Journal) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 106 Issue: 4
  • Publication Date: 2012
  • Doi Number: 10.1016/j.ymgme.2012.05.014
  • Journal Name: MOLECULAR GENETICS AND METABOLISM
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.419-423
  • Keywords: Methylmalonic acidemia, Microarray sequencing, Mutation, MUT, COA MUTASE, MOLECULAR-BASIS, SPECTRUM, FORMS, B-12

Abstract

Methylmalonic acidemia is an autosomal recessive metabolic disorder affecting the propionate oxidation pathway in the catabolism of several amino acids, odd-chain fatty acids, and cholesterol. Methylmalonic acidemia is characterized by elevated levels of methylmalonic acid in the blood and urine. Mutations in the MUT gene, encoding methylmalonyl-CoA mutase carries out isomerization of L-methylmalonyl-CoA to succinyl-CoA, cause methylmalonic acidemia. In this study, 30 Turkish patients diagnosed with mut methylmalonic acidemia were screened for mutations using custom designed sequencing microarrays. The study resulted in detection of 22 different mutations, 10 of which were novel: p.Q132*, p.A137G, c.753 + 1T, p.T387I, p.Q514E, p.P615L, p.D625V, c.1962_1963delTC, p.L674F, and c.2115_2116insA. The most common, p.P615T, was identified in 28.0% of patients. These results suggest that microarray based sequencing is a useful tool for the detection of mutations in MUT in patients with mut methylmalonic acidemia. (C) 2012 Elsevier Inc. All rights reserved.