A modified approach to identification of the sickle cell anemia mutation by means of allele-specific polymerase chain reaction

Abstract
The allele-specific PCR approach has been modified by introducing a second mismatch at the 3′-penultimate link of the primer and used to identify the sickle cell anemia mutation (A → T transversiion in the sixth codon of the human β-globin gene causing Glu → Val substitution in the protein), thus obviating the problem of an interpretationally ambiguous 3′-terminal mismatch including T residue.