Anterior Segment Dysgenesis 1; Asgd1

Description

Anterior segment dysgeneses (ASGD or ASMD) are a heterogeneous group of developmental disorders affecting the anterior segment of the eye, including the cornea, iris, lens, trabecular meshwork, and Schlemm canal. The clinical features of ASGD include iris hypoplasia, an enlarged or reduced corneal diameter, corneal vascularization and opacity, posterior embryotoxon, corectopia, polycoria, an abnormal iridocorneal angle, ectopia lentis, and anterior synechiae between the iris and posterior corneal surface (summary by Cheong et al., 2016).Anterior segment dysgenesis is sometimes divided into subtypes including aniridia (see {106210}), Axenfeld and Rieger anomalies, iridogoniodysgenesis, Peters anomaly, and posterior embryotoxon (Gould and John, 2002).Some patients with ASGD1 have been reported with the Peters anomaly subtype.In its simplist form, Peters anomaly involves a central corneal opacity, but it may also involve adherent iris strands. Some patients have keratolenticular content or cataract. The underlying defects in this form of congenital corneal opacity reside in the posterior stroma, Descemet membrane, and corneal endothelium. The disorder results from abnormal migration or function of neural crest cells and may include abnormalities of other anterior segment structures, such as the lens and iris (summary by Withers et al., 1999).

Clinical Features

Top most frequent phenotypes and symptoms related to Anterior Segment Dysgenesis 1; Asgd1

  • Intellectual disability
  • Global developmental delay
  • Nystagmus
  • Strabismus
  • Sensorineural hearing impairment
  • Cataract
  • Ptosis
  • Visual impairment
  • Myopia
  • Atrial septal defect

And another 41 symptoms. If you need more information about this disease we can help you.

Click here to know more about Mendelian.

Incidence and onset information

— Currently we don't have prevalence information about this disease (Not enough data available about incidence and published cases.)
No data available about the known clinical features onset.

Alternative names

Anterior Segment Dysgenesis 1; Asgd1 Is also known as anterior segment mesenchymal dysgenesis, asmd, anterior segment ocular dysgenesis, asod.

Researches and researchers

Currently, we don't have any information about doctors, researches or researchers related to this disease. Please contact us if you would like to appear here.

Anterior Segment Dysgenesis 1; Asgd1 Recommended genes panels

Panel Name, Specifity and genes Tested/covered
MitoMet®Plus aCGH Analysis.

By Baylor Miraca Genetics Laboratories (United States).

RGS9, RHO, GRK1, RLBP1, RNASEL, BCS1L, RP1, RP2, RP9, RPE65, RPGR, RPL35A, MRPL3, RPS14, RS1, SAG, SARDH, SCO2, SCP2, SDHB , (...)

View the complete list with 612 more genes
Specificity
1 %
Genes
50 %
Optic Atrophy and Early Glaucoma Panel.

By Greenwood Genetic Center Diagnostic Laboratories Greenwood Genetic Center (United States).

SLC4A4, SPG7, TBK1, ACO2, BEST1, WFS1, ACVR1, OPTN, ASB10, MFRP, CANT1, SBF2, COL4A1, CISD2, TMEM126A, MTPAP, CYP1B1, C12orf65, SH3PXD2B, FOXC1 , (...)

View the complete list with 14 more genes
Specificity
6 %
Genes
100 %
Axenfeld-Rieger syndrome.

By Medical Genetics Laboratory, Kennedy Center Juliane Marie Center, Rigshospitalet (Denmark).

B3GLCT, CYP1B1, FOXC1, FOXE3, PAX6, PITX2, PITX3
Specificity
29 %
Genes
100 %
Anterior segment defects.

By Medical Genetics Laboratory, Kennedy Center Juliane Marie Center, Rigshospitalet (Denmark).

PORCN, B3GLCT, COL4A1, CYP1B1, EYA1, FOXC1, FOXE3, KERA, LAMB2, PAX2, PAX6, PITX2, PITX3
Specificity
16 %
Genes
100 %
PITX3. Complete sequencing.

By Instituto de Medicina Genomica Instituto de Medicina Genomica (Spain).

PITX3
Specificity
100 %
Genes
50 %
Cataracts (NGS panel for 41 genes).

By CGC Genetics (Portugal).

BFSP1, BFSP2, VIM, WFS1, FYCO1, PXDN, CHMP4B, P3H2, AGK, SLC16A12, CRYAA, CRYAB, CRYBA1, CRYBA2, CRYBA4, CRYBB1, CRYBB2, CRYBB3, CRYGB, CRYGC , (...)

View the complete list with 21 more genes
Specificity
5 %
Genes
100 %
Anterior segment mesenchymal dysgenesis (sequence analysis of PITX3 gene).

By CGC Genetics (Portugal).

PITX3
Specificity
100 %
Genes
50 %
Ocular anterior segment mesenchymal dysgenesis (NGS panel of 18 genes).

By CGC Genetics (Portugal).

BMP4, VSX1, PXDN, B3GLCT, COL4A1, CYP1B1, MIR184, SLC38A8, FGFR2, FOXC1, FOXE3, HMX1, JAG1, ASPH, PAX6, PITX2, PITX3, PTCH1
Specificity
12 %
Genes
100 %

You can get up to 60 more panels with our dedicated tool

Learn more

Sources and references

You can check the following sources for additional information.

OMIM ORPHANET Genetic Syndrome Finder

If you liked this article maybe you will also find interesting the following in-depth articles about other rare diseases, like MYASTHENIC SYNDROME, CONGENITAL, 20, PRESYNAPTIC; CMS20 PRIMARY PERITONEAL CARCINOMA JOUBERT SYNDROME 2; JBTS2 HAMAMY SYNDROME; HMMS GILLESPIE SYNDROME; GLSP OGDEN SYNDROME; OGDNS PONTOCEREBELLAR HYPOPLASIA, TYPE 1C; PCH1C