Homocystinuria Due To Cystathionine Beta-synthase Deficiency

Table of contents:

Description
Related genes
Clinical Features
Incidence and onset information
Alternative Names
Researches and researchers
Gene Panels
Sources and references

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).

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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

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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

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Homocystinuria Due To Cystathionine Beta-synthase Deficiency Recommended genes panels

Panel Name, Specifity and genes Tested/covered
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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 Panel complete gene list RMRP, BCS1L, SACS, BLM, SGCA, SGCB, SGCG, SGSH, SLC12A6, SLC17A5, SLC22A5, SLC25A13, SLC25A15, SLC26A2, SLC35A3, SLC7A7, SMN1, SMPD1, BTD, BTK, TGM1, TH, TTPA, UBE3A, UGT1A1, USH1C, USH2A, CLRN1, WAS, MCOLN1, NPHS2, CDH23, PCDH15, CAPN3, CBS, HPS3, LRPPRC, RTEL1, MLC1, DCLRE1C, ADA, CFTR, CHAT, POMGNT1, CHRNE, SUMF1, DHDDS, TPP1, CLN3, CLN5, CLN6, CLN8, ADAMTS2, COL4A3, CPT1A, ETHE1, CPT2, GNE, MMACHC, TMEM216, CTNS, CTSK, CYBB, CYP1B1, CYP27A1, BBS10, DOK7, DBT, DHCR7, DLD, DMD, GNPTAB, DPYD, AGA, AGL, EIF2B5, AGXT, FAH, FANCC, FKTN, FH, FMR1, ALDH3A2, G6PC, G6PD, SLC37A4, GAA, GALC, GALT, ALDOB, GBA, GCDH, GJB2, GJB6, GLB1, GLDC, ALPL, GRHPR, AMT, HADHA, HBA1, HBA2, HBB, HEXA, HEXB, HMGCL, HSD17B4, IDUA, ABCC8, ELP1, IL2RG, ABCD1, IVD, LAMA3, LAMB3, LAMC2, MAN2B1, MECP2, ARSA, MPI, MPL, ASL, MTTP, ASPA, ASS1, MYO7A, NBN, NEB, NPC1, NPHP1, NPHS1, ATM, OCRL, OTC, PAH, PC, PCCA, PCCB, ATP7B, SLC26A4, PEX1, PEX7, ACADM, PHGDH, SERPINA1, PKHD1, PLA2G6, PMM2, POLG, ACADVL, PPT1, PROP1, BBS1, BBS2, PTS, PEX2, BCKDHA, RAPSN, BCKDHB 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 Panel complete gene list RMRP, BCS1L, SACS, BLM, SGCA, SGCB, SGCG, SGSH, SLC12A6, SLC17A5, SLC22A5, SLC25A13, SLC25A15, SLC26A2, SLC35A3, SLC7A7, SMN1, SMPD1, BTD, TGM1, TH, TTPA, UBE3A, UGT1A1, USH1C, USH2A, CLRN1, WAS, MCOLN1, NPHS2, CDH23, PCDH15, CAPN3, CBS, HPS3, LRPPRC, RTEL1, MLC1, DCLRE1C, ADA, CFTR, CHAT, POMGNT1, CHRNE, SUMF1, DHDDS, TPP1, CLN3, CLN5, CLN6, CLN8, ADAMTS2, COL4A3, CPT1A, ETHE1, CPT2, GNE, MMACHC, TMEM216, CTNS, CTSK, CYP1B1, CYP27A1, BBS10, DOK7, DBT, DHCR7, DLD, GNPTAB, DPYD, AGA, AGL, EIF2B5, AGXT, FAH, FANCC, FKTN, FH, ALDH3A2, G6PC, SLC37A4, GAA, GALC, GALT, ALDOB, GBA, GCDH, GJB2, GJB6, GLB1, GLDC, ALPL, GRHPR, AMT, HADHA, HBA1, HBA2, HBB, HEXA, HEXB, HMGCL, HSD17B4, IDUA, ABCC8, ELP1, IVD, LAMA3, LAMB3, LAMC2, MAN2B1, ARSA, MPI, MPL, ASL, MTTP, ASPA, ASS1, MYO7A, NBN, NEB, NPC1, NPHP1, NPHS1, ATM, PAH, PC, PCCA, PCCB, ATP7B, SLC26A4, PEX1, PEX7, ACADM, PHGDH, SERPINA1, PKHD1, PLA2G6, PMM2, POLG, ACADVL, PPT1, PROP1, BBS1, BBS2, PTS, PEX2, BCKDHA, RAPSN, BCKDHB 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 Panel complete gene list SKI, TGFB2, TGFBR1, TGFBR2, TNXB, ACTA2, SLC2A10, CBS, ACVR1, ATP6V0A2, FKBP14, SLC39A13, ADAMTS2, COL11A1, COL1A2, COL3A1, COL5A1, COL5A2, ZNF469, CHST14, ELN, FBLN5, FBN1, FBN2, ABCC6, SMAD3, MYH11, MYLK, NOTCH1, ATP7A, PKD2, PLOD1, PRDM5 Specificity 4 % Genes 100 %

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Sources and references

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