Methylmalonic Aciduria, Transient, Due To Transcobalamin Receptor Defect

Description

Methylmalonic aciduria due to transcobalamin receptor defect is a rare metabolite absorption and transport disorder characterized by a moderate increase of methylmalonic acid (MMA) in the blood and urine due to decreased cellular uptake of cobalamin resulting from decreased transcobalamin receptor function. Patients are usually asymptomatic however, screening reveals increased C3-acylcarnitine and MMA in plasma. Serum homocysteine levels may vary from normal to moderately elevated and retinal vascular occlusive disease, resulting in severe visual loss, has been reported.

Clinical Features

Phenotypes and symptoms related to Methylmalonic Aciduria, Transient, Due To Transcobalamin Receptor Defect

  • Visual loss
  • Aciduria
  • Ethylmalonic aciduria
  • Methylmalonic aciduria
  • Central retinal artery occlusion
  • Retinal arterial occlusion

Incidence and onset information

Not enough data available about incidence and published cases.


Mendelian

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Methylmalonic Aciduria, Transient, Due To Transcobalamin Receptor Defect Recommended genes panels

Panel Name, Specifity and genes Tested/covered
Methylmalonic Acidemia Sequencing NextGen Panel.

By Children's Hospital Colorado Molecular Genetics Laboratory Children's Hospital Colorado in United States.

MTHFR, MTR, ACSF3, SUCLA2, TCN2, GIF, MCEE, MMAB, MMAA, IVD, CBS, CD320, TCN1
Specificity
8 %
Genes
100 %
Cobalamin Metabolism Disorder.

By Knight Diagnostic Laboratories - Molecular Diagnostic Center Oregon Health & Science University in United States.

MMACHC, MTR, MTRR, ACSF3, MMADHC, LMBRD1, TCN2, GIF, MCEE, MMAB, MMAA, MUT, SUCLG1, IVD, CBS, ABCD4, CD320
Specificity
6 %
Genes
100 %
Methylmalonic aciduria due to transcobalamin receptor defect (sequence analysis of CD320 gene).

By CGC Genetics in Portugal.

CD320
Specificity
100 %
Genes
100 %
Methylmalonic aciduria (NGS panel for 15 genes).

By CGC Genetics in Portugal.

MMACHC, MTR, MTRR, ACSF3, SUCLA2, MMADHC, LMBRD1, MCEE, MMAB, MMAA, MUT, MLYCD, SUCLG1, ABCD4, CD320
Specificity
7 %
Genes
100 %
Methylmalonic Acidemia Sequencing Panel with CNV Detection.

By PreventionGenetics PreventionGenetics in United States.

ACSF3, ALDH6A1, SUCLA2, MMADHC, MCEE, MMAB, MMAA, MUT, MLYCD, SUCLG1, CD320
Specificity
10 %
Genes
100 %
Methylmalonic Aciduria and Homocystinuria Sequencing Panel with CNV Detection.

By PreventionGenetics PreventionGenetics in United States.

MMACHC, MMADHC, LMBRD1, TCN2, ABCD4, HCFC1, CD320
Specificity
15 %
Genes
100 %
Methylmalonic Aciduria and/or Homocystinuria via CD320 Gene Sequencing with CNV Detection.

By PreventionGenetics PreventionGenetics in United States.

CD320
Specificity
100 %
Genes
100 %
Organic Aciduria Sequencing Panel with CNV Detection.

By PreventionGenetics PreventionGenetics in United States.

MCCC1, MCCC2, ACAT1, HLCS, BCKDHA, BCKDHB, MMACHC, DLD, ACSF3, ALDH6A1, IDH2, PCCB, PCCA, D2HGDH, MMADHC, MCEE, MMAB, MMAA, MUT, DBT , (...)

View the complete list with 9 more genes
Specificity
4 %
Genes
100 %
Disorders Related to Metabolism of Cobalamin, Folate and Homocysteine Sequencing Panel with CNV Detection.

By PreventionGenetics PreventionGenetics in United States.

MTHFR, MMACHC, AMN, MTR, MTRR, ACSF3, ALDH6A1, SUCLA2, PCCB, PCCA, MMADHC, LMBRD1, TCN2, CUBN, GIF, MCEE, MMAB, MMAA, MUT, MLYCD , (...)

View the complete list with 11 more genes
Specificity
4 %
Genes
100 %
Methylmalonic Aciduria due to Transcobalamin Receptor Defect (CD320 gene).

By VU University Medical Center Metabolic Unit, PX 1X 009 in Netherlands.

CD320
Specificity
100 %
Genes
100 %
AllNeuro panel.

By Centogene AG - the Rare Disease Company in Germany.

F2, F5, FMR1, HTT, HFE, MTHFR, TTR, UBE3A, VHL, PTEN, AARS2, ABHD12, ACACA, ACAD9, ACADL, ACADM, ACADS, AGL, ACADVL, ACAT1 , (...)

View the complete list with 1185 more genes
Specificity
1 %
Genes
100 %
CentoICU platinum plus.

By Centogene AG - the Rare Disease Company in Germany.

BRCA2, F2, F5, MTHFR, UBE3A, MCCC1, MCCC2, AARS2, ACAD9, ACADL, ACADM, ACADS, AGL, ACADVL, ACAT1, ALDOA, ALDOB, FBP1, PC, GYS2 , (...)

View the complete list with 494 more genes
Specificity
1 %
Genes
100 %
CentoICU platinum.

By Centogene AG - the Rare Disease Company in Germany.

BRCA2, F2, F5, MTHFR, UBE3A, MCCC1, MCCC2, AARS2, ACAD9, ACADL, ACADM, ACADS, AGL, ACADVL, ACAT1, ALDOA, ALDOB, FBP1, PC, GYS2 , (...)

View the complete list with 494 more genes
Specificity
1 %
Genes
100 %
Methylmalonic aciduria TCbIR type.

By Centogene AG - the Rare Disease Company in Germany.

CD320
Specificity
100 %
Genes
100 %
Methylmalonic Aciduria and Homocystinuria.

By Asper Biogene Asper Biogene LLC in Estonia.

MTHFR, MMACHC, AMN, MTR, MTRR, ACSF3, SUCLA2, MMADHC, LMBRD1, TCN2, CUBN, GIF, MCEE, MMAB, MMAA, MUT, MLYCD, SUCLG1, IVD, CBS , (...)

View the complete list with 3 more genes
Specificity
5 %
Genes
100 %
Invitae Metabolic Disorders Newborn Screening Confirmation Panel.

By Invitae in United States.

MCCC1, MCCC2, ACADM, ACADS, ACADVL, ACAT1, PC, ARG1, HLCS, BTD, AUH, BCKDHA, BCKDHB, GAA, MMACHC, MTR, MTRR, CPS1, CPT2, PRODH , (...)

View the complete list with 70 more genes
Specificity
2 %
Genes
100 %
Invitae Combined Methylmalonic Acidemia and Homocystinuria Panel.

By Invitae in United States.

MMACHC, AMN, MMADHC, LMBRD1, TCN2, CUBN, GIF, ABCD4, HCFC1, CD320, TCN1
Specificity
10 %
Genes
100 %
Inherited Metabolic Disorders: Sequencing Panel.

By EGL Genetic Diagnostics Eurofins Clinical Diagnostics in United States.

MCCC1, MCCC2, ACAD9, ACADL, ACADM, ACADS, AGL, ACADVL, PC, GYS2, HLCS, ATPAF2, AUH, BCKDHA, BCKDHB, GAA, MMACHC, MTR, SLC37A4, MTRR , (...)

View the complete list with 81 more genes
Specificity
1 %
Genes
100 %
Cobalamin Homocysteine Methionine Deficiency NGS Panel.

By Fulgent Genetics Fulgent Genetics in United States.

MTHFR, MMACHC, MTR, MTRR, ALDH6A1, MMADHC, LMBRD1, TCN2, MCEE, MMAB, MMAA, MUT, CBS, AHCY, GNMT, CD320, MAT1A, CTH, ADK, FOLH1
Specificity
5 %
Genes
100 %
Methylmalonic Acid Metabolism NGS Panel.

By Fulgent Genetics Fulgent Genetics in United States.

MMACHC, ACSF3, ALDH6A1, SUCLA2, MMADHC, LMBRD1, TCN2, MCEE, MMAB, MMAA, MUT, SUCLG1, CD320
Specificity
8 %
Genes
100 %
CD320.

By Fulgent Genetics Fulgent Genetics in United States.

CD320
Specificity
100 %
Genes
100 %
Organic Acidemia/Aciduria & Cobalamin Deficiency Panel.

By Blueprint Genetics in Finland.

MTHFR, MCCC1, MCCC2, ACAT1, BCKDHA, BCKDHB, BCS1L, MMACHC, AMN, MTR, MTRR, DLD, ACSF3, HMGCL, IDH2, ACADSB, PCCB, PCCA, D2HGDH, MMADHC , (...)

View the complete list with 33 more genes
Specificity
2 %
Genes
100 %
Comprehensive Metabolism Panel.

By Blueprint Genetics in Finland.

HFE, MTHFR, MCCC1, MCCC2, ACAD9, ACADL, ACADM, ACADS, AGL, ACADVL, ACAT1, ALDOA, ALDOB, FBP1, PC, GYS2, ARG1, HLCS, BTD, ATP7B , (...)

View the complete list with 414 more genes
Specificity
1 %
Genes
100 %
METHYLMALONIC ACIDEMIA: NGS PANEL.

By Laboratorio de Genetica Clinica SL in Spain.

MMACHC, ACSF3, SUCLA2, MMADHC, LMBRD1, MCEE, MMAB, MMAA, MUT, MLYCD, SUCLG1, ABCD4, HCFC1, CD320
Specificity
8 %
Genes
100 %
Methylmalonic Aciduria due to Transcobalamin Receptor Defect , Sequencing CD320 Gene.

By Reference Laboratory Genetics in Spain.

CD320
Specificity
100 %
Genes
100 %
Methylmalonic acidemia: gene sequencing panel (RAPID testing).

By CEN4GEN Institute for Genomics and Molecular Diagnostics in Canada.

MMACHC, ACSF3, MMADHC, LMBRD1, TCN2, MMAB, MMAA, MUT, ABCD4, HCFC1, CD320
Specificity
10 %
Genes
100 %
CEN4GEN rapid supplemental newborn genetic screen: Full gene sequencing panel.

By CEN4GEN Institute for Genomics and Molecular Diagnostics in Canada.

MTHFR, MCCC1, MCCC2, ACADM, ACADS, ACADVL, ACAT1, ARG1, HLCS, BTD, AUH, BCKDHA, BCKDHB, GAA, HBB, MMACHC, MTR, MTRR, CPT2, HSD17B10 , (...)

View the complete list with 79 more genes
Specificity
2 %
Genes
100 %
CEN4GEN rapid pan-ethnic carrier screen: Full gene sequencing panel.

By CEN4GEN Institute for Genomics and Molecular Diagnostics in Canada.

MTHFR, MCCC1, MCCC2, ACADM, ACADS, ACADVL, ACAT1, ARG1, HLCS, BTD, AUH, BCKDHA, BCKDHB, GAA, HBB, MMACHC, MTR, MTRR, CPT2, HSD17B10 , (...)

View the complete list with 84 more genes
Specificity
1 %
Genes
100 %
Methylmalonic aciduria due to transcobalamin receptor defect: Full gene sequencing (Rapid testing).

By CEN4GEN Institute for Genomics and Molecular Diagnostics in Canada.

CD320
Specificity
100 %
Genes
100 %

Alternate names

Methylmalonic Aciduria, Transient, Due To Transcobalamin Receptor Defect Is also known as methylmalonic acidemia, tcblr type;methylmalonic acidemia, tcb1r type; methylmalonic acidemia, tcbir type.


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