Is GM1 gangliosidosis inherited ?
How is GM1 gangliosidosis inherited? GM1 gangliosidosis is a hereditary condition that is inherited in an autosomal recessive manner. This means that to be affected, a person must have a mutation in both copies of the responsible gene in each cell. Affected people inherit one mutated copy of the gene from each parent, who is referred to as a carrier. Carriers of an autosomal recessive condition typically do not have any signs or symptoms (they are unaffected). When 2 carriers of an autosomal recessive condition have children, each child has: a 25% (1 in 4) chance to be affected a 50% (1 in 2) chance to be an unaffected carrier like each parent a 25% chance to be unaffected and not be a carrier GM1 gangliosidosis is type-specific within families. This means that people with a family history of the condition are generally only at increased risk for the specific type of GM1 gangliosidosis in the family.