Yes there is 25% possibility that the kid will be thalassemia
major. But you can do following test during pregnancy
to find out
if your baby is at risk for thalassemia, you can have prenatal tests during pregancy to see if he has the condition. Prenatal tests are tests you get during pregnancy to see how you and your baby are doing. 1. Chorionic villus
sampling (also called cvs). This test checks tissue from the placenta to see if your baby has a genetic condition. You can get cvs at 10 to 13 weeks of pregnancy.
(also called amnio). This test takes some amniotic
fluid from around your baby in the uterus. The test checks for birth defects
and genetic conditions in your baby. You can get this test at 15 to 20 weeks of pregnancy.