Sandhoff disease

General Information (adopted from Orphanet):

Synonyms, Signs: HEXOSAMINIDASES A AND B DEFICIENCY SANDHOFF DISEASE, ADULT TYPE, INCLUDED
GM2-GANGLIOSIDOSIS, TYPE II
SANDHOFF DISEASE, JUVENILE TYPE, INCLUDED
SANDHOFF DISEASE, INFANTILE TYPE, INCLUDED
GM2 gangliosidosis 0 variant
Hexosaminidases A and B deficiency
Number of Symptoms 46
OrphanetNr: 796
OMIM Id: 268800
ICD-10: E75.0
UMLs: C0036161
MeSH: D012497
MedDRA:
Snomed: 23849003

Prevalence, inheritance and age of onset:

Prevalence: No data available.
Inheritance: Autosomal recessive
[Orphanet]
Age of onset: Infancy
Childhood
Adolescent
Adult
[Orphanet]

Disease classification (adopted from Orphanet):

Parent Diseases: Cerebral lipidosis with dementia
 -Rare genetic disease
 -Rare neurologic disease
GM2 gangliosidosis
 -Rare genetic disease
 -Rare neurologic disease
Metabolic disease with macular cherry-red spot
 -Rare eye disease
 -Rare genetic disease
Rare hereditary metabolic disease with peripheral neuropathy
 -Rare genetic disease
 -Rare neurologic disease

Symptom Information: Sort by abundance 

1
(HPO:0000802) Impotence 20 / 7739
2
(HPO:0000293) Full cheeks Frequent [Orphanet] 85 / 7739
3
(HPO:0000280) Coarse facial features 189 / 7739
4
(HPO:0000256) Macrocephaly Very frequent [Orphanet] 298 / 7739
5
(HPO:0000158) Macroglossia 119 / 7739
6
(HPO:0008002) Abnormality of macular pigmentation Very frequent [Orphanet] 20 / 7739
7
(HPO:0000572) Visual loss Very frequent [Orphanet] 272 / 7739
8
(HPO:0010729) Cherry red spot of the macula 10 / 7739
9
(HPO:0000365) Hearing impairment Very frequent [Orphanet] 539 / 7739
10
(HPO:0001260) Dysarthria 329 / 7739
11
(HPO:0002380) Fasciculations 42 / 7739
12
(HPO:0007272) Progressive psychomotor deterioration 6 / 7739
13
(HPO:0001347) Hyperreflexia 363 / 7739
14
(HPO:0011442) Abnormality of central motor function Very frequent [Orphanet] 76 / 7739
15
(HPO:0007256) Abnormal pyramidal signs 116 / 7739
16
(HPO:0001251) Ataxia 413 / 7739
17
(HPO:0001278) Orthostatic hypotension 24 / 7739
18
(HPO:0002066) Gait ataxia Very frequent [Orphanet] 327 / 7739
19
(HPO:0100022) Abnormality of movement Very frequent [Orphanet] 129 / 7739
20
(HPO:0001250) Seizures Very frequent [Orphanet] 1245 / 7739
21
(HPO:0000924) Abnormality of the skeletal system Occasional [Orphanet] 114 / 7739
22
(HPO:0002808) Kyphosis Very frequent [Orphanet] 289 / 7739
23
(HPO:0002652) Skeletal dysplasia Occasional [Orphanet] 113 / 7739
24
(HPO:0002574) Episodic abdominal pain 10 / 7739
25
(HPO:0001744) Splenomegaly Frequent [Orphanet] 337 / 7739
26
(HPO:0002028) Chronic diarrhea 51 / 7739
27
(HPO:0001433) Hepatosplenomegaly 78 / 7739
28
(HPO:0002240) Hepatomegaly Frequent [Orphanet] 467 / 7739
29
(HPO:0004325) Decreased body weight Very frequent [Orphanet] 492 / 7739
30
(HPO:0001635) Congestive heart failure Occasional [Orphanet] 232 / 7739
31
(HPO:0001640) Cardiomegaly 81 / 7739
32
(HPO:0001939) Abnormality of metabolism/homeostasis Very frequent [Orphanet] 328 / 7739
33
(HPO:0006901) Impaired thermal sensitivity 4 / 7739
34
(HPO:0002205) Recurrent respiratory infections Frequent [Orphanet] 254 / 7739
35
(HPO:0003202) Skeletal muscle atrophy 281 / 7739
36
(HPO:0001324) Muscle weakness Frequent [Orphanet] 859 / 7739
37
(OMIM) High lumbar gibbus 4 / 7739
38
(OMIM) Impaired sweating 4 / 7739
39
(OMIM) Startle reaction 4 / 7739
40
(OMIM) Infantile muscle weakness 4 / 7739
41
(HPO:0012758) Neurodevelopmental delay Very frequent [Orphanet] 949 / 7739
42
(MedDRA:10013578) Dizziness postural 4 / 7739
43
(OMIM) Mild urinary incontinence 4 / 7739
44
(OMIM) Early blindness 6 / 7739
45
(OMIM) Doll-like face 4 / 7739
46
(OMIM) Hexosaminidase B beta chain deficiency 4 / 7739

Associated genes:

ClinVar (via SNiPA)

Gene symbol Variation Clinical significance Reference

Additional Information:

Description: (OMIM) Sandhoff disease is a progressive neurodegenerative disorder characterized by an accumulation of GM2 gangliosides, particularly in neurons, and is clinically indistinguishable from Tay-Sachs disease (272800).
Diagnosis OMIM Lowden et al. (1978) described Sandhoff disease in a Metis kindred of northern Saskatchewan and discussed carrier detection. Chamoles et al. (2002) described methods for enzymatic detection of Tay-Sachs and Sandhoff disease in newborns using dried blood spots ...
Clinical Description OMIM Sandhoff et al. (1968) gave the initial description of the disorder that bears his name. O'Brien (1971) studied 2 Mexican-American sisters and a boy of Anglo-Saxon extraction. Most patients have been non-Jewish; however, the clinical and pathologic picture ...
Molecular genetics OMIM O'Dowd et al. (1986) concluded that the primary gene defect in the majority of Sandhoff cases is in the HEXB gene itself. They studied 5 juvenile cell lines, all of which were found to have normal or reduced ...
Population genetics OMIM Cantor and Kaback (1985) stated that the gene frequency for Sandhoff disease was about 1/1000 in Jews and 1/600 in non-Jews.

Drousiotou et al. (2000) noted that in the previous 15 years, 4 patients with the ...