health

The prognosis of a baby with achondroplasia depends on whether the
defective gene is inherited from only one parent or from both. A child
who inherits the gene from both parents will die before birth or shortly
after birth from respiratory failure. About 3 percent of children with
achondroplasia die suddenly and unexpectedly during the first year of life,
usually from compression of the spinal cord.
A child who has one normal copy of the gene will usually have
normal intelligence and a normal life expectancy in spite of bone and
joint problems.