GCNT2 gene related symptoms and diseases

All the information presented here about the GCNT2 gene and its related diseases, symptoms, and test panels has been aggregated from the following public sources: OMIM,HGNC,NCBIGENE,ORPHANET, Mendelian Rare Disease Search Engine.

Top 5 symptoms and clinical features associated to GCNT2 gene

Symptoms // Phenotype % Cases
Cataract Very Common - Between 80% and 100% cases
Congenital cataract Very Common - Between 80% and 100% cases
Posterior lenticonus Uncommon - Between 30% and 50% cases
Sutural cataract Uncommon - Between 30% and 50% cases
Lenticonus Uncommon - Between 30% and 50% cases

Other less frequent symptoms and clinical features

Patients with GCNT2 gene alterations may also develop some of the following symptoms and phenotypes:
  • Not very common - Between 30% and 50% cases

  • Anterior polar cataract
  • Cortical cataract
  • Polar cataract
  • Posterior polar cataract
  • Inspiratory stridor
  • Nuclear cataract
  • Preauricular pit
  • Severe vision loss

And 10 more phenotypes, you can get all of them using our tools for rare diseases.

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Rare diseases associated to GCNT2 gene

Here you will find a list of rare diseases related to the GCNT2. You can also use our tool to get a more accurate diagnosis based on your current symptoms.


CATARACT 13 WITH ADULT I PHENOTYPE; CTRCT13


Description

The i and I antigens of the I blood group system (OMIM ) are carbohydrate structures carried on glycolipids and glycoproteins and are characterized as straight or branched glycochains composed of repeating N-acetyllactosamine (LacNAc) units, respectively. Conversion of i antigen into an I-active structure requires the activity of the I-branching enzyme, beta-1,6-N-acetylglucosaminyltransferase (GCNT2 ), which adds the decisive GlcNAc-beta-1-6 branch onto the straight poly-LacNAc chains. Expression of the i and I antigens on red blood cells (RBCs) is reciprocal and developmentally regulated. Adult human RBCs predominantly express I antigen, whereas fetal and neonatal RBCs predominantly express i antigen. After birth, I antigen levels increase gradually as i antigen levels fall, with the normal Ii status of adult RBCs reached after about 13 to 20 months. Mutations that specifically affect 1 of the 3 variants produced by the GCNT2 gene cause the rare adult i phenotype (see {110800}), in which adult RBCs are rich in i antigen and contain low levels of I antigen. Mutations that eliminate all 3 GCNT2 variants cause the adult i phenotype with congenital cataract (review by Yu and Lin, 2011).

Most common symptoms of CATARACT 13 WITH ADULT I PHENOTYPE; CTRCT13

  • Cataract
  • Congenital cataract


More info about CATARACT 13 WITH ADULT I PHENOTYPE; CTRCT13

SOURCES: OMIM

TOTAL EARLY-ONSET CATARACT


Alternate names

TOTAL EARLY-ONSET CATARACT Is also known as cataract, congenital, x-linked, cataract, congenital total, with posterior sutural opacities in heterozygotes, cxn, cct, cataract 40 with or without microcornea

Most common symptoms of TOTAL EARLY-ONSET CATARACT

  • Cataract
  • Visual impairment
  • Ventricular septal defect
  • Microphthalmia
  • Patent ductus arteriosus


More info about TOTAL EARLY-ONSET CATARACT

SOURCES: OMIM ORPHANET

BLOOD GROUP, I SYSTEM; II


Alternate names

BLOOD GROUP, I SYSTEM; II Is also known as i blood group system, ii blood group system

Description

The i and I antigens of the I blood group system are carbohydrate structures carried on glycolipids and glycoproteins and are characterized as straight or branched glycochains composed of repeating N-acetyllactosamine (LacNAc) units, respectively. Conversion of i antigen into an I-active structure requires the activity of the I-branching enzyme, beta-1,6-N-acetylglucosaminyltransferase (GCNT2 ), which adds the decisive GlcNAc-beta-1-6 branch onto the straight poly-LacNAc chains. Expression of the i and I antigens on red blood cells (RBCs) is reciprocal and developmentally regulated. Adult human RBCs predominantly express I antigen, whereas fetal and neonatal RBCs predominantly express i antigen. After birth, I antigen levels increase gradually as i antigen levels fall, with the normal Ii status of adult RBCs reached after about 13 to 20 months. Mutations that specifically affect 1 of the 3 variants produced by the GCNT2 gene cause the rare adult i phenotype, in which adult RBCs are rich in i antigen and contain low levels of I antigen. Mutations that eliminate all 3 GCNT2 variants cause the adult i phenotype with congenital cataract (CTRCT13 ) (review by Yu and Lin, 2011).

Most common symptoms of BLOOD GROUP, I SYSTEM; II

  • Cataract
  • Congenital cataract
  • Blood group antigen abnormality


More info about BLOOD GROUP, I SYSTEM; II

SOURCES: OMIM


Potential gene panels for GCNT2 gene

Cataract 13 with adult i phenotype (sequence analysis of GCNT2 gene) Panel

Portugal.

By CGC Genetics

This panel specifically test the GCNT2 gene.

More info about this panel

Cataracts (NGS panel for 41 genes) Panel

Portugal.

By CGC Genetics Cataracts (NGS panel for 41 genes) that also includes the following genes: BFSP1 BFSP2 VIM WFS1 FYCO1 PXDN CHMP4B P3H2 AGK SLC16A12

More info about this panel

Congenital Cataracts Sequencing Panel with CNV Detection Panel

United States.

By PreventionGenetics PreventionGenetics Congenital Cataracts Sequencing Panel with CNV Detection that also includes the following genes: BFSP1 BFSP2 VIM FYCO1 PXDN CHMP4B P3H2 AGK SLC16A12 CRYAA

More info about this panel

Cataract Panel

Germany.

By MGZ Medical Genetics Center Cataract that also includes the following genes: BFSP1 BFSP2 SIX6 VIM WFS1 RAB18 FYCO1 JAM3 TBC1D20 CHMP4B

More info about this panel

Eye Diseases - panels Panel

Germany.

By MGZ Medical Genetics Center Eye Diseases - panels that also includes the following genes: BFSP1 BFSP2 SALL2 BMP4 BMP7 SHH SIX3 SIX6 FOXL2 SOX2

More info about this panel

Cataract panel Panel

Germany.

By Centogene AG - the Rare Disease Company Cataract panel that also includes the following genes: BFSP1 BFSP2 VIM WFS1 UNC45B FYCO1 CHMP4B P3H2 VSX2 BCOR

More info about this panel

Cataract, autosomal dominant Panel

Germany.

By Centogene AG - the Rare Disease Company

This panel specifically test the GCNT2 gene.

More info about this panel

Cataract Panel Panel

Germany.

By CeGaT GmbH Cataract Panel that also includes the following genes: BFSP1 BFSP2 VIM FYCO1 PXDN CHMP4B P3H2 BCOR AGK SLC16A12

More info about this panel

Single gene testing GCNT2 Panel

Germany.

By CeGaT GmbH

This panel specifically test the GCNT2 gene.

More info about this panel

Cataract Panel

Estonia.

By Asper Biogene Asper Biogene LLC Cataract that also includes the following genes: BFSP1 BFSP2 SIX6 VIM UNC45B FYCO1 PXDN CHMP4B P3H2 VSX2

More info about this panel

Invitae Congenital Cataracts Panel Panel

United States.

By Invitae Invitae Congenital Cataracts Panel that also includes the following genes: BFSP1 BFSP2 FYCO1 VSX2 BCOR AGK CRYAA CRYAB CRYBA1 CRYBB1

More info about this panel

GCNT2 Panel

United States.

By Fulgent Genetics Fulgent Genetics

This panel specifically test the GCNT2 gene.

More info about this panel

Cataract Panel Panel

Finland.

By Blueprint Genetics Cataract Panel that also includes the following genes: BFSP1 BFSP2 TFAP2A VIM WFS1 WRN FYCO1 PXDN CHMP4B RAB3GAP1

More info about this panel

Congenital Cataract, Autosomal Recessive NGS and Deletion/Duplication Panel Panel

United States.

By DDC Clinic Molecular Diagnostics Laboratory DDC Clinic, Center for Special Needs Children Congenital Cataract, Autosomal Recessive NGS and Deletion/Duplication Panel that also includes the following genes: FYCO1 AGK CRYAA CRYAB CRYBB1 CRYBB3 SIL1 CTDP1 TDRD7 GALK1

More info about this panel

GCNT2 Gene Sequencing and Deletion/Duplication Analysis Panel

United States.

By DDC Clinic Molecular Diagnostics Laboratory DDC Clinic, Center for Special Needs Children

This panel specifically test the GCNT2 gene.

More info about this panel

Congenital Cataracts , Panel Massive Sequencing (NGS) 40 Genes Panel

Spain.

By Reference Laboratory Genetics Congenital Cataracts , Panel Massive Sequencing (NGS) 40 Genes that also includes the following genes: BFSP1 BFSP2 VIM FYCO1 PXDN CHMP4B P3H2 AGK SLC16A12 CRYAA

More info about this panel


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