Demographics
Labels Fragile X
Fragile X syndrome is the most common genetic cause of mental
retardation in boys, affecting one in 4,000 males and one in
8,000 females. A screening study that was done of children in special
education programs in the United States found that approximately
one in 400 males receiving special education services have fragile X
syndrome. According to the Centers for Disease Control and Prevention
(CDC), about one in 259 women carry the fragile X mutation and
could pass it to their children. About one in 800 men carry fragile X
changes; their daughters will also be carriers. As far as is known, fragile
X syndrome is equally common in all races and ethnic groups; it
appears to be one of the most common genetic disorders in humans.
No large-scale population screening in any country in the world has
been carried out, however.
retardation in boys, affecting one in 4,000 males and one in
8,000 females. A screening study that was done of children in special
education programs in the United States found that approximately
one in 400 males receiving special education services have fragile X
syndrome. According to the Centers for Disease Control and Prevention
(CDC), about one in 259 women carry the fragile X mutation and
could pass it to their children. About one in 800 men carry fragile X
changes; their daughters will also be carriers. As far as is known, fragile
X syndrome is equally common in all races and ethnic groups; it
appears to be one of the most common genetic disorders in humans.
No large-scale population screening in any country in the world has
been carried out, however.
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