1. Genes and Genomic Entities
  2. MMAA

MMAA

methylmalonic aciduria (cobalamin deficiency) cblA type
OMIM: 607481, Gene2Phenotype

7 panels

Panel Reviews Mode of inheritance Details
7 panels
Green MMAA in Hyperammonaemia

Level 3: Urea Cycle disorders
Level 2: Metabolic disorders
Version 1.22

review BIALLELIC, autosomal or pseudoautosomal
Sources
  • Expert Review Green
  • Radboud University Medical Center, Nijmegen
  • Illumina TruGenome Clinical Sequencing Services
  • UKGTN
  • Emory Genetics Laboratory
Phenotypes
  • Methylmalonic aciduria, vitamin B12-responsive 251100
Green MMAA in Undiagnosed metabolic disorders

Level 3: Specific metabolic abnormalities
Level 2: Metabolic disorders
Version 1.642

review BIALLELIC, autosomal or pseudoautosomal
Sources
  • Expert Review Green
  • Literature
Phenotypes
  • Defect in adenosylcobalamin synthesis-cbl A (Disorders of cobalamin absorption, transport and metabolism)
  • Methylmalonic aciduria, vitamin B12-responsive 251100
Green MMAA in Likely inborn error of metabolism


Level 2: Metabolic
Version 8.91
Latest signed off version: v8.0 (30 Apr 2025)

Component of the following Super Panels:

  • Childhood onset leukodystrophy
  • Hypotonic infant
  • Paediatric disorders
  • Unexplained death in infancy and sudden unexplained death in childhood

    		•  review BIALLELIC, autosomal or pseudoautosomal
    Sources
    • London North GLH
    • NHS GMS
    • Expert Review Green
    Phenotypes
    • Methylmalonic aciduria, vitamin B12-responsive 251100
    • Defect in adenosylcobalamin synthesis-cbl A (Disorders of cobalamin absorption, transport and metabolism)
    Red MMAA in Fetal anomalies


    Level 2: Fetal (including NIPD)
    Version 6.140
    Latest signed off version: v6.0 (30 Apr 2025)

    		review BIALLELIC, autosomal or pseudoautosomal
    Sources
    • Expert Review Red
    • PAGE DD-Gene2Phenotype
    Phenotypes
    • METHYLMALONIC ACIDURIA TYPE CBLA
    Green MMAA in DDG2P


    Version 6.424
    Latest signed off version: v6.0 (30 Apr 2025)

    Component of the following Super Panels:

  • Paediatric disorders

    		•  review BIALLELIC, autosomal or pseudoautosomal
    Sources
    • DD-Gene2Phenotype
    • Expert Review Green
    Phenotypes
    • METHYLMALONIC ACIDURIA TYPE CBLA 251100
    Green MMAA in Intellectual disability


    Level 2: Developmental disorders
    Version 9.285
    Latest signed off version: v9.0 (30 Apr 2025)

    Component of the following Super Panels:

  • Childhood onset leukodystrophy
  • Hypotonic infant
  • Paediatric disorders

    		•  review BIALLELIC, autosomal or pseudoautosomal
    Sources
    • Expert Review Green
    • Radboud University Medical Center, Nijmegen
    Phenotypes
    • Methylmalonic aciduria, vitamin B12-responsive, 251100
    • METHYLMALONIC ACIDURIA TYPE CBLA
    Red MMAA in Childhood onset dystonia, chorea or related movement disorder


    Level 2: Neurology
    Version 7.13
    Latest signed off version: v7.0 (30 Apr 2025)

    		review Not set
    Sources
    • Expert Review Red
    • London North GLH