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.
The dissociative disorders listed in the American Psychiatric Association's DSM-5 are as follows: 1  Dissociative identity disorder (formerly multiple personality disorder): the alternation of two or more distinct personality states with impaired recall among personality states.issociative identity disorder (multiple personality disorder). Cause: People with dissociative identity disorder usually have close relatives who have also had similar experiences. Treatment: Long-term psychotherapy that helps the patient merge his/her multiple personalities into one personality.