NCIt definition : Human EGF A61G allele is located in the vicinity of 4q25 and is approximately 99 kb
in length. The A61G allele is a polymorphism in the promoter region of the EGF gene
where an adenosine residue is replaced by a guanosine at position 61 in the genomic
DNA, which encodes pro-epidermal growth factor precursor protein. This allele may
be associated with aberrant expression of the protein and decreased incidence of cirrhosis,
hepatocellular carcinoma, malignant melanoma and gastric cancer.;