Detection of the jaundice-related G71R mutation in the UGT1A1 gene by denaturing high performance liquid chromatography (DHPLC)

  • Retno Sutomo
  • Sunartini Hapsara
  • Suryono Yudha Patria
  • Hajime Nakamura
Keywords: G71R mutation, UGT1A1 gene, DHPLC, sequencing, neonatal jaundice

Abstract

Background  The  G71R mutation in the UGT1A1 gene has  been
associated with neonatal jaundice  and  other  cases  of  hereditary,
unconjugated hyperbilirubinemia in several Asian populations.
Currently,  DNA  sequencing  is  the  only  method  available  to
identify the mutation, which can be time- and  labor-intensive,
particularly for such projects  as  population-based genetic studies.
A relatively new method, denaturing high performance liquid
chromatography (DHPLC),  is  increasingly used to  detect  various
mutations.
Objective  The  aim  of  the present study was to investigate the
ability of DHPLC to  detect  the G71R mutation, in comparison
with the gold standard of sequencing analysis.
Methods Seventy-two infants were enrolled. Following genomic
DNA  extraction, exon 1 of the UGT1A1 gene was amplified  by
polymerase chain reaction (PCR). Afterwards, the G71R mutation
was simultaneously,  and  blindly, determined in all subjects  by
DHPLC and sequence analysis.  The  performance  of  the DHPLC
analysis, compared  to  the sequence analysis, was assessed in terms
of  sensitivity  and  specificity.
Results DHPLC detected the G71 R mutation in  31  individuals.
Of  these,  26  were heterozygous and 5 were homozygous for the
mutation. This method did not find the mutation in  41  other
individuals. Sequence analysis produced identical results for all
individuals.
Conclusion DHPLC analysis  is  capable  of  detecting the G71R
mutation  in  the  UGT1A1  with  a degree  of  sensitivity  and
specificity  (100%  each)  that  is  comparable to sequencing analysis.

Author Biographies

Retno Sutomo
Department  of  Child Health, Medical School, Gadjah Mada University, Yogyakarta, Indonesia
Sunartini Hapsara
Department  of  Child Health, Medical School, Gadjah Mada University, Yogyakarta, Indonesia
Suryono Yudha Patria
Department  of  Child Health, Medical School, Gadjah Mada University, Yogyakarta, Indonesia
Hajime Nakamura
Department of  Child Health, Kobe Children's  Hospital,  Hyogo, Japan.

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Published
2009-03-01
How to Cite
1.
Sutomo R, Hapsara S, Patria S, Nakamura H. Detection of the jaundice-related G71R mutation in the UGT1A1 gene by denaturing high performance liquid chromatography (DHPLC). PI [Internet]. 1Mar.2009 [cited 13Nov.2024];49(1):1-. Available from: https://paediatricaindonesiana.org/index.php/paediatrica-indonesiana/article/view/447
Section
Articles
Received 2016-09-05
Accepted 2016-09-05
Published 2009-03-01