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Two siblings with a rare type of maturity-onset diabetes of the young (MODY)
  1. Fatima Riyadh Alhakim and
  2. Haya AlKhayyat
  1. Pediatrics, Bahrain Defence Force Royal Medical Services, Riffa, Bahrain
  1. Correspondence to Dr Fatima Riyadh Alhakim; fatima.alhakim{at}gmail.com

Abstract

Maturity-onset diabetes of the young (MODY) is a type of diabetes that does not entirely fit the usually encountered type 1 or type 2 diabetes. It is a monogenic, familial and non-autoimmune diabetes among children and young adults resulting from autosomal dominant gene mutations.

MODY diagnosis is confirmed by molecular genetic testing, which is costly. Therefore, it is rarely done.

Nearly 1%–6% of diabetes has a monogenic cause but this is frequently misclassified as type 1 diabetes mellitus due to the lack of genetic testing. Therefore, a correct diagnosis of MODY is crucial for determining the plan of management. Furthermore, having a patient with MODY in a family indicates screening other family members. In this case report, we highlight that paediatric diabetes cases are not always type 1 or type 2 diabetes mellitus since two siblings incidentally presented with hyperglycaemia and a confirmed diagnosis of MODY type 10 was ultimately made. Moreover, their mother who was previously labelled as a case of type 1 diabetes mellitus was diagnosed later as MODY after genetic testing.

  • Diabetes
  • Genetic screening / counselling

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Footnotes

  • Contributors Report was written by FRA. Supervised by HA.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Case reports provide a valuable learning resource for the scientific community and can indicate areas of interest for future research. They should not be used in isolation to guide treatment choices or public health policy.

  • Competing interests None declared.

  • Provenance and peer review Not commissioned; externally peer reviewed.