alpha-Fetoprotein and cystic fibrosis

Area of Science:

• Biochemistry
• Genetics
• Pediatrics

Background:

• Unconfirmed reports suggested elevated serum alpha-fetoprotein (AFP) in cystic fibrosis (CF) patients and carriers.
• CF is a genetic disorder often associated with liver complications, prompting investigation of liver-related markers.

Purpose of the Study:

• To investigate the diagnostic value of serum AFP levels in identifying cystic fibrosis.
• To determine if AFP levels can aid in detecting carriers of the CF gene.

Main Methods:

• Serum AFP levels were measured in 25 children with CF, 26 siblings, 42 parents, and 31 healthy controls.
• Liver function tests were performed concurrently.
• AFP levels were also assessed in children with ataxia telangiectasia for comparison.

Main Results:

• No significant elevation of serum AFP was detected in any cystic fibrosis patients, siblings, or parents.
• Liver function tests were normal in all participants except one control subject.
• High AFP levels were observed in 15 out of 16 children with ataxia telangiectasia.

Conclusions:

• Serum AFP measurement is not a reliable method for detecting cystic fibrosis carriers.
• The previously reported association between AFP levels and cystic fibrosis requires further investigation or is unsubstantiated.