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Microcephalic osteodysplastic primordial dwarfism type 1.

Steven Ferrell1, Aaron Johnson1, Waylon Pearson1

  • 1Western University of Health Sciences, Pomona, California, USA.

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Microcephalic osteodysplastic primordial dwarfism type 1 (MOPD1) is a rare genetic disorder causing microcephaly and growth issues. Early recognition of physical and radiological signs aids diagnosis and genetic counseling for families.

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Area of Science:

  • Genetics
  • Pediatrics
  • Radiology

Background:

  • Microcephalic osteodysplastic primordial dwarfism type 1 (MOPD1) is a rare autosomal recessive disorder.
  • It is characterized by severe microcephaly and intrauterine growth retardation.

Observation:

  • Key physical findings include sloping forehead, micrognathia, sparse hair, and short limbs.
  • Radiological features may involve agenesis of the corpus callosum, interhemispheric cysts, and shallow acetabula.
  • This case highlights MOPD1 with distinct subglottic stenosis and laryngeal cleft.

Findings:

  • Definitive diagnosis of MOPD1 relies on identifying mutations in the RNU4ATAC gene.
  • Early identification is crucial due to the condition's genetic inheritance pattern.

Implications:

  • Accurate diagnosis facilitates genetic counseling for affected families, especially in subsequent pregnancies.
  • Understanding the diverse physical manifestations aids clinicians in early detection and management of MOPD1.