# Decoding the Neurodevelopment and Seizure Puzzle: A Pediatric Case of DYRK1A Gene Mutation and Autosomal Dominant Mental Retardation Type 7

## TL;DR

This paper presents a rare case of a child with a DYRK1A gene mutation causing developmental delay and epilepsy, highlighting the importance of genetic testing for accurate diagnosis.

## Contribution

The paper adds to the limited clinical understanding of DYRK1A mutations through a detailed pediatric case report.

## Key findings

- The patient exhibited global developmental delay, epilepsy, and dysmorphic features consistent with DYRK1A mutation.
- Whole Exome Sequencing confirmed the diagnosis, emphasizing the role of genetic testing in rare disorders.
- The case underscores the clinical variability and diagnostic challenges of Autosomal Dominant Mental Retardation Type 7.

## Abstract

Autosomal Dominant Mental Retardation Type 7 is a disorder caused by pathogenic variants in the DYRK1A gene. Clinical features associated with this gene mutation include focal dysmorphism, developmental delay, and epilepsy. In this report, we present a case of an 8-year-old boy with a DYRK1A gene mutation, whose clinical manifestations underscore the rarity and clinical challenges of this genetic condition. The patient is a known case of global developmental delay with intractable epilepsy on multiple anti-epileptic medications. Upon examination, the patient showed delayed developmental milestones, hypotonia with brisk deep tendon reflexes, as well as dysmorphic features in the form of microcephaly, deep-set eyes, prominent ears, and a short nose. MRI was done, and findings were suggestive of a DYRK1A gene mutation. The diagnosis was later confirmed by Whole Exome Sequencing (WES). Our report aims to contribute to the growing knowledge about DYRK1A mutations, facilitating a better understanding of the associated clinical features and implications for patient care.