Can prenatal screening tell you if your baby will have amyotrophic lateral sclerosis?

Rarely. Rare families have a genetic form of ALS that involves the gene for superoxide dismutase or other genes. More commonly, ALS occurs sporadically in families with multiple gene and environmental factors and cannot be tested for in advance of symptoms.

Related Questions

Can prenatal screening determine if a baby will eventually have amyotropic lateral sclerosis?

Yes, but ... Right now we know of about 10 genes that cause als, but there are probably more, because genetic testing finds a mutation in less than a third of ALS that runs in families (10% of als) and in even less when it comes out of the blue. Given a familial mutation, you can test before birth, but prenatal testing is especially complex and is best discussed with a clinical geneticist or genetic counselor. Read more...