Homocystinuria Due To Cystathionine Beta-synthase Deficiency

Description

Classic homocystinuria is an autosomal recessive metabolic disorder of sulfur metabolism. The clinical features of untreated homocystinuria due to CBS deficiency usually manifest in the first or second decade of life and include myopia, ectopia lentis, mental retardation, skeletal anomalies resembling Marfan syndrome (MFS ), and thromboembolic events. Light skin and hair can also be present. Biochemical features include increased urinary homocystine and methionine. There are 2 main phenotypes of the classic disorder: a milder pyridoxine (vitamin B6)-responsive form, and a more severe pyridoxine-nonresponsive form. Pyridoxine is a cofactor for the CBS enzyme, and can aid in the conversion of homocysteine to cysteine (summary by Reish et al., 1995 and Testai and Gorelick, 2010).Some patients have been reported to have a milder form of homocystinuria, which is characterized by increased plasma homocysteine and increased risk for thrombotic events in young adulthood, but without the other skeletal, ocular, or nervous system manifestations observed in classic homocystinuria (Kelly et al., 2003).

Clinical Features

Top most frequent phenotypes and symptoms related to Homocystinuria Due To Cystathionine Beta-synthase Deficiency

  • Intellectual disability
  • Seizures
  • Failure to thrive
  • High palate
  • Myopia
  • Abnormality of the skeletal system
  • Edema
  • Behavioral abnormality
  • Dilatation
  • Depressivity

And another 37 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

Homocystinuria Due To Cystathionine Beta-synthase Deficiency Is also known as cystathionine beta-synthase deficiency, cbs deficiency, homocystinuria with or without response to pyridoxine.

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.

Homocystinuria Due To Cystathionine Beta-synthase Deficiency 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
100 %
CBS Familial Mutation/Variant Analysis.

By Baylor Miraca Genetics Laboratories (United States).

CBS
Specificity
100 %
Genes
100 %
CBS Prenatal Sequence Analysis.

By Baylor Miraca Genetics Laboratories (United States).

CBS
Specificity
100 %
Genes
100 %
CBS Sequence Analysis.

By Baylor Miraca Genetics Laboratories (United States).

CBS
Specificity
100 %
Genes
100 %
GeneAware Complete Panel Version 2 (Female).

By Baylor Miraca Genetics Laboratories (United States).

RMRP, BCS1L, SACS, BLM, SGCA, SGCB, SGCG, SGSH, SLC12A6, SLC17A5, SLC22A5, SLC25A13, SLC25A15, SLC26A2, SLC35A3, SLC7A7, SMN1, SMPD1, BTD, BTK , (...)

View the complete list with 139 more genes
Specificity
1 %
Genes
100 %
GeneAware Complete Panel Version 2 (Male).

By Baylor Miraca Genetics Laboratories (United States).

RMRP, BCS1L, SACS, BLM, SGCA, SGCB, SGCG, SGSH, SLC12A6, SLC17A5, SLC22A5, SLC25A13, SLC25A15, SLC26A2, SLC35A3, SLC7A7, SMN1, SMPD1, BTD, TGM1 , (...)

View the complete list with 129 more genes
Specificity
1 %
Genes
100 %
NGS Aortic Dysfunction or Dilation and Related Disorders Panel.

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

SKI, TGFB2, TGFBR1, TGFBR2, ACTA2, SLC2A10, CBS, COL3A1, COL5A1, COL5A2, ELN, FBLN5, FBN1, FBN2, SMAD3, MYH11, MYLK, NOTCH1, PLOD1
Specificity
6 %
Genes
100 %
NGS Connective Tissue Disorders Panel.

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

SKI, TGFB2, TGFBR1, TGFBR2, TNXB, ACTA2, SLC2A10, CBS, ACVR1, ATP6V0A2, FKBP14, SLC39A13, ADAMTS2, COL11A1, COL1A2, COL3A1, COL5A1, COL5A2, ZNF469, CHST14 , (...)

View the complete list with 13 more genes
Specificity
4 %
Genes
100 %

You can get up to 116 more panels with our dedicated tool

Learn more

Sources and references

You can check the following sources for additional information.

OMIM Genetic Syndrome Finder

If you liked this article maybe you will also find interesting the following in-depth articles about other rare diseases, like SPINOCEREBELLAR ATAXIA 12; SCA12 NESTOR-GUILLERMO PROGERIA SYNDROME; NGPS HYPOCHONDROPLASIA CONGENITAL DISORDER OF GLYCOSYLATION, TYPE IIn; CDG2N NIEMANN-PICK DISEASE, TYPE C1; NPC1