What is the genotype of a carrier for niemann-pick disease?

A carrier for Niemann-Pick disease typically has a heterozygous genotype, meaning they possess one normal allele and one mutated allele for the NPC1 or NPC2 gene, depending on the specific type of Niemann-Pick disease. This genotype can be represented as "N/n," where "N" denotes the normal allele and "n" the mutated allele. Carriers usually do not exhibit symptoms of the disease but can pass the mutated allele to their offspring.