Atypical Presentation of Sengers Syndrome: A Novel Mutation Revealed with Postmortem Genetic Testing

Abstract

Introduction: Sengers syndrome is an autosomal recessive disorder characterized by congenital cataracts, hypertrophic cardiomyopathy, skeletal myopathy and lactic acidosis. The causative AGK mutations have been identified with whole exome sequencing. Clinical report: We report on a 9-month-old infant with episodic lactic acidosis who died before a definitive diagnosis could be established. Postmortem genomic autopsy revealed a novel homozygous NM_018238: c.1215dupG; p.Phe406Valfs*4 mutation in AGK (OMIM 610345) confirming the diagnosis of Sengers syndrome. Conclusion: This report provides further evidence that reverse genetics is a useful approach in patients who do not manifest the hallmark features of known and recognizable syndromes.

Keywords:

• Sengers syndrome
• AGK
• postmortem genetic testing
• whole exome sequencing

Acknowledgements

We thank the family for participating in the study.

Disclosure statement

The authors declare that they have no conflict of interest.

Additional information

Funding

This study was supported by Hacettepe University (Grant Number: TAY-2015-7335).