Rapid identification of the copy number of α-globin genes by capillary electrophoresis analysis

Clin Biochem. 2012 Jul;45(10-11):798-805. doi: 10.1016/j.clinbiochem.2012.02.006. Epub 2012 Feb 21.

Abstract

Objectives: The current study aimed at the rapid identification of the copy number of α-globin genes for the diagnosis of α-thalassemia.

Design and methods: To identify the copy number of α-globin genes in α-thalassemia, we developed a novel method using a multiplex polymerase chain reaction (PCR) in combination with the CE analysis.

Results: The proposed method provides a rapid detection of the common α-globin gene deletions. Sixty-six patients with α-thalassemia and 46 normal controls were included in the present study. The obtained results showed good correlation with those obtained by gap PCR. Moreover, a low amount of maternal cell contamination in the fetus specimen for the prenatal diagnosis of hemoglobin Barts hydrops fetalis as well as the rare multiplicated α-globin genes can be identified using this method.

Conclusion: This method provides a convenient and efficient tool for the rapid identification of the copy number of α-globin genes in α-thalassemia and the individuals with α-globin gene multiplication.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Base Sequence
  • DNA Copy Number Variations / genetics
  • Electrophoresis, Capillary / methods*
  • Female
  • Gene Deletion
  • Gene Dosage*
  • Glycated Hemoglobin / genetics
  • Hemoglobin A2 / genetics
  • Hemoglobins, Abnormal / genetics
  • Humans
  • Hydrops Fetalis / diagnosis
  • Hydrops Fetalis / genetics
  • Male
  • Molecular Sequence Data
  • Multiplex Polymerase Chain Reaction / methods
  • Pregnancy
  • Prenatal Diagnosis / methods
  • Reproducibility of Results
  • Sensitivity and Specificity
  • Sequence Homology, Nucleic Acid
  • alpha-Globins / genetics*
  • alpha-Thalassemia / diagnosis
  • alpha-Thalassemia / genetics*

Substances

  • Glycated Hemoglobin A
  • Hemoglobins, Abnormal
  • alpha-Globins
  • Hemoglobin A2
  • hemoglobin Bart's