Mockenhaupt et al. [11] found heterozygous β-thalassemia in 1% of pregnant women enrolled in a cross-sectional study in Ghana Two studies from the 1970’s in Nigeria found a β-thalassemia prevalence of < 1% [12]; however, in a small clinic-based study in Nigeria, Vincent et al. [13] found that 6% of adults possessed both sickle cell and β-thalassemia genes. The gene discussed is PPIB; the disease is thalassemia.