HYPERPHOSPHATASIA WITH MENTAL RETARDATION SYNDROME 2

General Information (adopted from Orphanet):

Synonyms, Signs: HPMRS2
Number of Symptoms 32
OrphanetNr:
OMIM Id: 614749
ICD-10:
UMLs:
MeSH:
MedDRA:
Snomed:

Prevalence, inheritance and age of onset:

Prevalence: No data available.
Inheritance: Autosomal recessive inheritance
[Omim]
Age of onset: Congenital onset
[Omim]

Disease classification (adopted from Orphanet):

Parent Diseases: No data available.

Symptom Information: Sort by abundance 

1
(HPO:0000076) Vesicoureteral reflux rare [HPO:skoehler] 94 / 7739
2
(HPO:0000455) Broad nasal tip 67 / 7739
3
(HPO:0000316) Hypertelorism 644 / 7739
4
(HPO:0003196) Short nose 264 / 7739
5
(HPO:0001357) Plagiocephaly rare [HPO:skoehler] 106 / 7739
6
(HPO:0000637) Long palpebral fissure 21 / 7739
7
(HPO:0010804) Tented upper lip vermilion 47 / 7739
8
(HPO:0000431) Wide nasal bridge 290 / 7739
9
(HPO:0000252) Microcephaly rare [HPO:skoehler] 832 / 7739
10
(HPO:0001327) Photomyoclonic seizures 125 / 7739
11
(HPO:0001250) Seizures rare [HPO:skoehler] 1245 / 7739
12
(HPO:0001249) Intellectual disability 1089 / 7739
13
(HPO:0000750) Delayed speech and language development 197 / 7739
14
(HPO:0010055) Broad hallux 56 / 7739
15
(HPO:0002023) Anal atresia 135 / 7739
16
(HPO:0002025) Anal stenosis 23 / 7739
17
(HPO:0001510) Growth delay 295 / 7739
18
(HPO:0001631) Atria septal defect rare [HPO:skoehler] 274 / 7739
19
(HPO:0001671) Abnormality of the cardiac septa 55 / 7739
20
(HPO:0003155) Elevated alkaline phosphatase 52 / 7739
21
(HPO:0001324) Muscle weakness 859 / 7739
22
(HPO:0008947) Infantile muscular hypotonia 482 / 7739
23
(HPO:0010547) Muscle flaccidity 466 / 7739
24
(HPO:0001252) Muscular hypotonia 990 / 7739
25
(OMIM) Broad halluces 12 / 7739
26
(HPO:0002119) Ventriculomegaly rare [HPO:skoehler] 253 / 7739
27
(OMIM) Brachytelephalangy 3 / 7739
28
(OMIM) Coronal synostosis (1 patient) 2 / 7739
29
(OMIM) Delayed psychomotor development, moderate to severe 2 / 7739
30
(OMIM) Hypoplastic or absent nails 1 / 7739
31
(HPO:0000007) Autosomal recessive inheritance 2538 / 7739
32
(HPO:0003577) Congenital onset 133 / 7739

Associated genes:

ClinVar (via SNiPA)

Gene symbol Variation Clinical significance Reference

Additional Information:

Description: (OMIM) Hyperphosphatasia with mental retardation syndrome-2 is an autosomal recessive disorder characterized by moderately to severely delayed psychomotor development, facial dysmorphism, brachytelephalangy, and increased serum alkaline phosphatase (hyperphosphatasia). Some patients may have additional features, such as cardiac septal defects ...
Clinical Description OMIM Krawitz et al. (2012) reported 2 sisters, born of unrelated British parents, and an unrelated girl with hyperphosphatasia with mental retardation. All 3 patients had normal birth parameters, but were born with anal stenosis or anal atresia with ...
Molecular genetics OMIM By exome sequencing of 2 sisters with HPMRS, Krawitz et al. (2012) identified compound heterozygosity for 2 mutations in the PIGO gene (614730.0001 and 614730.0002). Sequencing of this gene in 11 additional patients with a similar disorder identified ...