Remember Zack Siek? Last August, we introduced you to this avid gamer with an affinity for graphic design who also happens to have Spinal Muscular Atrophy (SMA), type 2.
When his disease was diagnosed just after his first birthday, Zack’s family was shocked. They had no known history of the disease on either side of their families, and the gene that causes SMA is recessive, so both parents must have a copy of it in order for their child to have SMA. Looking back, the signs were there – weak muscle tone in Zack’s legs, delayed motor skills, regression in physical development. But an SMA diagnosis never even crossed their minds.