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Area of Science:

  • Neonatal Medicine
  • Genetics
  • Neurology

Background:

  • Severe Spinal Muscular Atrophy (SMA) type 0 is a recognized, albeit rare, neonatal neuromuscular disorder.
  • Classical presentations involve profound hypotonia and respiratory insufficiency from birth.

Observation:

  • A neonate presented with severe generalized hypotonia and significant respiratory distress immediately after birth.
  • Genetic analysis revealed a homozygous absence of exon 7 in the Survival Motor Neuron I (SMN1) gene, confirming SMA type 0.

Findings:

  • The neonate experienced rapid deterioration despite supportive care.
  • Respiratory support was withdrawn at parental request, and the infant died at 108 days of age.

Implications:

  • Spinal Muscular Atrophy must be considered in the differential diagnosis of neonates with unexplained severe hypotonia and respiratory distress.
  • This case underscores the severity and rapid progression of SMA type 0.
  • Highlights the importance of genetic testing for definitive diagnosis in critical neonatal cases.