Can People with SMA Have Children?
People living with Spinal Muscular Atrophy, also known as SMA, can have children, and having SMA does not automatically prevent someone from becoming a parent. Research on pregnancy in women with SMA shows that successful pregnancies and healthy births are possible, although pregnancy may require closer medical monitoring because muscle weakness, reduced respiratory strength, scoliosis, mobility limitations, and fatigue can create additional challenges. Recent reviews have found that fertility in women with SMA does not appear to be significantly impaired, while pregnancy may carry higher rates of complications such as premature delivery, cesarean section, temporary loss of strength, or worsening respiratory function in some individuals. For that reason, pregnancy planning is often best approached with a multidisciplinary team that understands both SMA and high-risk obstetric care.
Genetics are another important part of family planning with Spinal Muscular Atrophy. Most cases of 5q SMA are inherited in an autosomal recessive pattern involving the SMN1 gene. An individual who has SMA will pass an altered SMN1 copy to each biological child, meaning the child will at minimum be a carrier. Whether the child could actually develop SMA depends heavily on the genetic status of the other biological parent. GeneReviews recommends that reproductive partners of individuals with SMA be offered carrier testing, because if the partner also carries an SMN1 disease-causing variant, the risk of having a child with SMA increases substantially. Genetic counseling can also help families understand options such as carrier screening, prenatal genetic testing, in vitro fertilization with preimplantation genetic testing, and other reproductive choices before pregnancy.
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