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Cause of the Disorder
There are several potential causes of achondroplasia. The first is a genetic mutation on chromosome 4 of the fibroblast growth factor receptor 3 (FGFR3). Scientists do not know why this mutation occurs. The disorder can also be passed on from an affected parent. If one parent has the disorder they have a 50% chance of having an affected child. If both parents have the disorder they have a 50% chance of having an affected child, a 25% chance of having a normal child, and a 25% chance that they will have a child that inherits one abnormal gene from each parent resulting in severe skeletal abnormalities that lead to early death for that child. (1, 2)
Statistics
Affects about 1 in 15,000 to 1 in 40,000 live births every year and can affect either sex. It can occur in all races and equally affects men and woman. About 10,000 people in the US are affected. About 80% of all little people have achondroplasia, about 190,000 people worldwide have the disorder, and......

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Approximate Word Count: 498
Approximate Pages: 2 (250 words per double-spaced page)

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