# How is SMA Inherited?
Keywords: spinal muscular atrophy, SMA, autosomal recessive, SMN1 gene, genetic testing, carrier screening, genetic counselor

> Spinal muscular atrophy (SMA) is an inherited autosomal recessive disease caused by mutations in the SMN1 gene. This page explains how SMA is inherited, the role of genetic testing, and the importance of understanding family history and genetic counseling.

## Details
- [Spinal muscular atrophy is an inherited disease](#): SMA is autosomal recessive, requiring mutations in both copies of the SMN1 gene for symptoms to appear; carriers have one mutated gene but are typically asymptomatic.
- [A family history](#): Having a family history of SMA increases the likelihood of being a carrier, and genetic testing can identify common mutations within the family.
- [Testing for family mutations](#): Depending on the type of mutation (e.g., SMN1 deletions or subtle gene changes), specific genetic tests can be conducted to assess carrier status.
- [Role of a genetic counselor](#): Genetic counselors help families understand genetic risks, testing options, and the implications of carrier screening for SMA.
- [Diagnosing and Testing](#): Confirming an SMA diagnosis requires genetic testing to identify mutations in the SMN1 gene.