Very severe spinal muscular atrophy: Type 0 with Dandy-Walker variant

Area of Science:

• Neurology
• Genetics
• Pediatrics

Background:

• Spinal muscular atrophy (SMA) is a genetic neuromuscular disorder affecting motor neurons.
• SMA presents in various types, with Type 0 being the most severe, characterized by intrauterine onset and rapid progression.
• The Dandy Walker malformation is a congenital brain defect.

Observation:

• A case of Spinal muscular atrophy (SMA) Type 0 was identified.
• The patient presented with intrauterine onset and profound hypotonia.
• A Dandy Walker variant anomaly was concurrently diagnosed in this patient.

Findings:

• This report details the first documented case of Spinal muscular atrophy (SMA) Type 0 associated with a Dandy Walker variant anomaly.
• The co-occurrence of these conditions in a single patient is unprecedented in medical literature.
• Clinical observations highlight the complex interplay between neuromuscular and central nervous system development.

Implications:

• This case expands the known spectrum of clinical presentations for SMA Type 0.
• Understanding this rare association may inform future diagnostic approaches and genetic counseling for families.
• Further research is warranted to explore potential genetic or developmental links between SMA and Dandy Walker malformation.