Whole exome sequencing of extreme morbid obesity patients: Translational implications for obesity and related disorders

Gilberto Paz-Filho, Margaret C.S. Boguszewski, Claudio A. Mastronardi, Hardip R. Patel, Angad S. Johar, Aaron Chuah, Gavin A. Huttley, Cesar L. Boguszewski, Ma Li Wong, Mauricio Arcos-Burgos, Julio Licinio

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)


Whole-exome sequencing (WES) is a new tool that allows the rapid, inexpensive and accurate exploration of Mendelian and complex diseases, such as obesity. To identify sequence variants associated with obesity, we performed WES of family trios of one male teenager and one female child with severe early-onset obesity. Additionally, the teenager patient had hypopituitarism and hyperprolactinaemia. A comprehensive bioinformatics analysis found de novo and compound heterozygote sequence variants with a damaging effect on genes previously associated with obesity in mice (LRP2) and humans (UCP2), among other intriguing mutations affecting ciliary function (DNAAF1). A gene ontology and pathway analysis of genes harbouring mutations resulted in the significant identification of overrepresented pathways related to ATP/ITP (adenosine/inosine triphosphate) metabolism and, in general, to the regulation of lipid metabolism. We discuss the clinical and physiological consequences of these mutations and the importance of these findings for either the clinical assessment or eventual treatment of morbid obesity.

Original languageEnglish
Pages (from-to)709-725
Number of pages17
Issue number3
Publication statusPublished or Issued - 25 Aug 2014


  • DNAAF1
  • Genetics
  • LRP2
  • Leptin-melanocortin
  • Megalin
  • Monogenic
  • Obesity
  • Pituitary
  • UCP2
  • Whole-exome sequencing

ASJC Scopus subject areas

  • Genetics
  • Genetics(clinical)

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