LUJAN-FRYNS SYNDROME

General Information (adopted from Orphanet):

Synonyms, Signs: MENTAL RETARDATION, X-LINKED, WITH MARFANOID HABITUS
Number of Symptoms 51
OrphanetNr:
OMIM Id: 309520
ICD-10:
UMLs:
MeSH:
MedDRA:
Snomed:

Prevalence, inheritance and age of onset:

Prevalence: No data available.
Inheritance: X-linked recessive inheritance
[Omim]
Age of onset:

Disease classification (adopted from Orphanet):

Parent Diseases: No data available.

Symptom Information: Sort by abundance 

1
(HPO:0000119) Abnormality of the genitourinary system 34 / 7739
2
(HPO:0000194) Open mouth 70 / 7739
3
(HPO:0000678) Dental crowding 65 / 7739
4
(HPO:0000322) Short philtrum 130 / 7739
5
(HPO:0000347) Micrognathia 426 / 7739
6
(HPO:0002002) Deep philtrum 42 / 7739
7
(HPO:0011220) Prominent forehead 137 / 7739
8
(HPO:0000275) Narrow face 76 / 7739
9
(HPO:0000256) Macrocephaly 298 / 7739
10
(HPO:0000446) Narrow nasal bridge 29 / 7739
11
(HPO:0003189) Long nose 20 / 7739
12
(HPO:0002007) Frontal bossing 366 / 7739
13
(HPO:0000327) Hypoplasia of the maxilla 129 / 7739
14
(HPO:0000426) Prominent nasal bridge 121 / 7739
15
(HPO:0000276) Long face 109 / 7739
16
(HPO:0000219) Thin upper lip vermilion 112 / 7739
17
(HPO:0000218) High palate 356 / 7739
18
(HPO:0000369) Low-set ears 372 / 7739
19
(HPO:0008544) Abnormally folded helix 24 / 7739
20
(HPO:0000709) Psychosis 61 / 7739
21
(HPO:0000752) Hyperactivity 140 / 7739
22
(HPO:0000718) Aggressive behavior 109 / 7739
23
(HPO:0001250) Seizures 1245 / 7739
24
(HPO:0000744) Low frustration tolerance 3 / 7739
25
(HPO:0000735) Impaired social interactions 20 / 7739
26
(HPO:0000717) Autism 108 / 7739
27
(HPO:0001249) Intellectual disability 1089 / 7739
28
(HPO:0000722) Obsessive-compulsive behavior 35 / 7739
29
(HPO:0000712) Emotional lability 44 / 7739
30
(HPO:0001371) Flexion contracture 220 / 7739
31
(HPO:0001166) Arachnodactyly 62 / 7739
32
(HPO:0001238) Slender finger 23 / 7739
33
(HPO:0100807) Long fingers 23 / 7739
34
(HPO:0011304) Broad thumb 39 / 7739
35
(HPO:0001547) Abnormality of the rib cage 25 / 7739
36
(HPO:0001388) Joint laxity 117 / 7739
37
(HPO:0000767) Pectus excavatum 244 / 7739
38
(HPO:0000098) Tall stature 74 / 7739
39
(HPO:0001519) Disproportionate tall stature 39 / 7739
40
(HPO:0002631) Ascending aortic aneurysm 9 / 7739
41
(HPO:0001631) Atria septal defect 274 / 7739
42
(HPO:0001629) Ventricular septal defect 316 / 7739
43
(HPO:0001611) Nasal speech 48 / 7739
44
(HPO:0001290) Generalized hypotonia 51 / 7739
45
(HPO:0001419) X-linked recessive inheritance 189 / 7739
46
(OMIM) Poor impulse control 1 / 7739
47
(OMIM) Autistic-like behavior 1 / 7739
48
(OMIM) Double row of teeth 1 / 7739
49
(OMIM) Mental retardation, mild to moderate 33 / 7739
50
(HPO:0001274) Agenesis of corpus callosum 142 / 7739
51
(OMIM) Borderline to large testes 1 / 7739

Associated genes:

ClinVar (via SNiPA)

Gene symbol Variation Clinical significance Reference

Additional Information:

Clinical Description OMIM Lujan et al. (1984) described 4 mentally retarded males in a large kindred with marfanoid habitus and similar craniofacial changes: long, narrow face, small mandible, high-arched palate, and hypernasal voice. Fryns and Buttiens (1987) described 2 pairs of ...
Molecular genetics OMIM In affected members of the family reported by Lujan et al. (1984), Schwartz et al. (2007) identified a mutation in the MED12 gene (N1007S; 300188.0002). Schwartz et al. (2007) noted that 1 of the family members originally thought ...