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Prenatal genetic testing was conducted on three fetuses belonging to three couples, both spouses in each couple being identified as SMA carriers. Among the three, one exhibited homozygous deletions of E7 and E8, while the remaining two displayed heterozygous deletions of E7 and E8. Following a thorough prenatal consultation, the couple formerly known as such opted to end the pregnancy. Prenatal diagnosis and screening for expectant mothers in Zhaoqing,