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Table 3 Estimated 2016 US prevalence of SMA by type assuming a birth prevalence of 10.3 per 100,000

From: Indirect estimation of the prevalence of spinal muscular atrophy Type I, II, and III in the United States

SMA type

Estimated prevalencea

Estimated prevalenceb

I

1764

1293

II

4322

4035

III

4247

4247

All

10,333

9575

  1. SMA spinal muscular atrophy
  2. aUsed published survival estimates from US literature only
  3. bUsed combined published survival estimates from the United States, Europe, and Australia
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Orphanet Journal of Rare Diseases

ISSN: 1750-1172