Three different groups reported the molecular genetic basis for Smith-Lemli-Opitz syndrome simultaneously. Smith-Lemli-Opitz syndrome is caused by mutations in the DHCR7 gene, the gene that codes for the enzyme DHCR7 that normally converts 7DHC to cholesterol in the final step of the cholesterol synthetic pathway.
About inheritance and genetics: Inheritance of Dissociative Identity Disorder refers to whether the condition is inherited from your parents or runs in families. The level of inheritance of a condition depends on how important genetics are to the disease.Strongly genetic diseases are usually inherited, partially genetic diseases are sometimes inherited, and non-genetic diseases are not inherited.he level of inheritance of a condition depends on how important genetics are to the disease. Strongly genetic diseases are usually inherited, partially genetic diseases are sometimes inherited, and non-genetic diseases are not inherited.
Childhood abuse is not believed to be the only cause of Dissociative Identity Disorder. It appears that there also may be a biological link when it comes to DID. Many people who have Dissociative Identity Disorder have a family history of mental illness.