This disease is caused by a deficiency of an enzyme called sphingomyelinase, an enzyme responsible for breaking down a specific fat in the body. Lack of sphingomyelinase causes an accumulation of this fat in various body organs. There are several subtypes of this condition. Type A is seen with increased frequency in those of Jewish ancestry. In type A, accumulation also occurs in the brain and nervous system which causes rapid deterioration and death 2-3 years of age. No cure or effective treatment is available.
| Disease frequency: | 1 in 40,000 for type A in the Jewish population. |
| Carrier frequency: | As high as 1 in 70 for those of Jewish ancestry. |
| Diagnosis: | Laboratory testing looking for deficiency of a specific enzyme or by genetic testing of the Niemann-Pick gene. |
| Inheritance: | Autosomal Recessive |
| Carrier testing: | Available by testing of the Niemann-Pick gene. |
| Prenatal diagnosis: | Available to those with an affected child or to couples identified to be at risk by carrier testing. |
Technical Information on Niemann-Pick Disease, Type A
Additional Information:
National Niemann-Pick Disease Foundation, Inc.
PO Box 49
415 Madison Ave.
Ft. Atkinson, WI 53538
(877) cure-npc
fax: (920) 563-0931
email: nnpdf@idcnet.com
www.nnpdf.org
Supported by a grant from
the Michael Reese Health Trust
© 2003 Chicago Center for Jewish Genetic Disorders
