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What is the prevalence of Spinal Muscular Atrophy?

How many people does Spinal Muscular Atrophy affect? Does it have the same prevalence in men and women? And in the different countries?

Prevalence of Spinal Muscular Atrophy

Spinal Muscular Atrophy (SMA) is a rare genetic disorder characterized by the loss of motor neurons, leading to muscle weakness and atrophy. It affects approximately 1 in 6,000 to 1 in 10,000 live births worldwide. SMA is classified into different types based on the age of onset and severity of symptoms. The most severe form, SMA Type 1, is the most common and accounts for about 60% of cases. Early diagnosis and intervention are crucial for managing SMA and improving quality of life for affected individuals.

Spinal Muscular Atrophy (SMA) is a rare genetic disorder that affects the motor neurons in the spinal cord, leading to muscle weakness and atrophy. The prevalence of SMA varies depending on the specific type.

The most common form of SMA is called SMA type 1, also known as Werdnig-Hoffmann disease. It is the most severe and typically manifests in infancy. SMA type 1 has an estimated prevalence of approximately 1 in 10,000 live births. Infants with this form of SMA often have difficulty with basic motor functions, such as breathing, swallowing, and moving.

Other types of SMA, such as SMA type 2 and type 3, have a lower prevalence but can still significantly impact individuals' lives. SMA type 2 typically appears in early childhood and has an estimated prevalence of 1 in 25,000 to 1 in 50,000 individuals. SMA type 3, also known as Kugelberg-Welander disease, usually manifests in adolescence or adulthood and has a prevalence of approximately 1 in 40,000 to 1 in 60,000 individuals.

It is important to note that SMA is a rare disorder, but its impact on affected individuals and their families is substantial. Ongoing research and advancements in treatment options, such as gene therapy, offer hope for improved outcomes and quality of life for those living with SMA.
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3 answers
Translated from spanish Improve translation
Affect you love children between 0 even year of life

Posted Aug 3, 2017 by Marycielo 2000
Translated from french Improve translation
I remember more too, but when one falls sick before the age of 16 in this case, it is regarded as a spinal muscular atrophy infant and it is a lot much more serious,thank god it is a my 16 years it has appeared

Posted Nov 22, 2017 by 2000

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Stories of Spinal Muscular Atrophy

SPINAL MUSCULAR ATROPHY STORIES
Spinal Muscular Atrophy stories
Charlotte & Wayne lost their first daughter Annabelle Rose when she was just 7 months and 12 days old due to a genetic muscle wasting condition called Spinal Muscular Atrophy. Annabelle had Type 1 which is the most severe form of the condition and ta...
Spinal Muscular Atrophy stories
My son Grady was born on May 15th 2015. He wasn't due until June 19th but since I had polyhydraminos my water broke on May 13th. I had noticed while I was pregnant that Grady didn't move near as often or as much as my daughter did during my first pre...
Spinal Muscular Atrophy stories
I was born on March 5, 1949, in a poor neighborhood of Lima, Peru, in a time where most houses had no electricity and radio music was a luxury only afforded by the few. The television had not yet come to the country and Internet was unimaginable. htt...
Spinal Muscular Atrophy stories
My daughter has a SMA type1 , the start of the disease in 5.5 months. She is 17 months. She is breathing on her own. Little holding her head. Raises handle. She begins to talk.
Spinal Muscular Atrophy stories
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SPINAL MUSCULAR ATROPHY FORUM
Spinal Muscular Atrophy forum
No less than two neurologists have diagnosed me with SMA, but I have to say, I'm pretty sure I DON'T have it. I'm strong, graceful and powerful... the only symptoms I'm experiencing are speech slurring, weak tongue and lips and mild difficulty breat...

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