Nonsyndromic holoprosencephaly accounts for approximately 25 to 50 percent of all cases of holoprosencephaly, which affects an estimated 1 in 10,000 newborns.
How many people are affected by nonsyndromic holoprosencephaly ?
<s>[INST] Answer the question truthfully, you are a medical professional. This is the question: How many people are affected by nonsyndromic holoprosencephaly ? [/INST] \n Nonsyndromic holoprosencephaly accounts for approximately 25 to 50 percent of all cases of holoprosencephaly, which affects an estimated 1 in 10,000 newborns.</s>