Fig. 3From: Noninvasive prenatal testing of α-thalassemia and β-thalassemia through population-based parental haplotypingEffect of the reference panel sample size on the outcomes of PBH-NIPT. We randomly extracted one-half, one-quarter, one-sixth, one-eighth, one-twelfth, and 50 of the samples from the total reference panel and performed three independent tests for a β-thalassemia and b α-thalassemia. In the 52 fetuses in whom NIPT successfully inferred both alleles, the outcome of NIPT improved as the sample size of the reference panel increasedBack to article page