Spinal muscular atrophy (SMA) is a life-threatening genetic disease that affects approximately 1 in 10,000 babies. The progressive muscle-wasting condition, depending on severity, can leave children unable to walk, sit unaided, swallow, and in very severe cases even breathe.
In this DNA Learning Center video shared in July 2012, Dr. Darryl De Vivo, of Columbia University Medical Center, talks about how SMA is diagnosed.
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