The characteristics of the included studies. Author Publica tion Year Country Sample Size Type of study Type of Thalassemia Type of Mutation (DM/NDM) Frequency Final Finding Ref. α Mutations β Mutations Rahim. F 2008 Iran 850,340 C.S α/β DM/NDM -3.7α (20.0%) IVSII-1 (11.7%) Due to the high prevalence of thalassemia, molecular genotyping prevents unnecessary iron supplementation. (1) Li.J 2014 China C.S α/β DM/NDM -SEA (65.1%) CD41/42 (42.1%) It is necessary screening for co-inheritance α/β thalassemia in prenatal diagnosis. (2) Wee.YC 2008 Malaysia C.S α/β DM/NDM -SEA (7.8%) CD41/42 (37.6%) Due to the high prevalence of -SEA mutation in Malaysia, it should be characteristic.