Serological and biochemical genetic markers in congenital cleft lip and cleft palate anomalies

Serological and biochemical genetic markers in 76 patients with cleft lip with or without cleft palate [CL(P)] and 24 patients with isolated cleft palate (CP) were studied and compared with healthy control subjects. Blood group A phenotype and homozygous plasma haptoglobin (2-2) were found associated with CL(P). The findings suggest that the individuals possessing these markers are more likely to develop congenital CL(P).