All the following Lipidoses are inherited as Autosomal Recessive Except
**Core Concept**
Lipidoses are a group of genetic disorders characterized by the accumulation of lipids in various organs, leading to cellular dysfunction. These conditions are often inherited in an autosomal recessive pattern, meaning that an individual must inherit two copies of the mutated gene (one from each parent) to express the disease.
**Why the Correct Answer is Right**
The correct answer is the one lipidoses that does not follow the autosomal recessive inheritance pattern. The majority of lipidoses, including Tay-Sachs disease (A), Niemann-Pick disease (B), and Fabry disease (D), are indeed inherited in an autosomal recessive manner. However, Gaucher disease (C) is an exception, as it can be inherited in an autosomal recessive, autosomal dominant, or even a non-inherited (somatic) manner, depending on the specific subtype.
**Why Each Wrong Option is Incorrect**
**Option A:** Tay-Sachs disease is an autosomal recessive disorder caused by a deficiency of the enzyme hexosaminidase A.
**Option B:** Niemann-Pick disease is also an autosomal recessive disorder caused by a deficiency of the enzyme sphingomyelinase.
**Option D:** Fabry disease is an X-linked recessive disorder caused by a deficiency of the enzyme alpha-Gal A, but it can manifest in females with a mutation in one of the two X chromosomes.
**Clinical Pearl / High-Yield Fact**
Gaucher disease is the most common lysosomal storage disorder, with a wide range of clinical manifestations, from mild to severe.
**Correct Answer: C. Gaucher disease can be inherited in an autosomal dominant or non-inherited manner.**