Muscular Dystrophy-dystroglycanopathy (congenital With Mental Retardation), Type B, 1; Mddgb1

Description

Congenital muscular dystrophies resulting from defective glycosylation of alpha-dystroglycan (DAG1 ) are characterized by early onset of muscle weakness, usually before ambulation is achieved; mental retardation and mild brain anomalies are variable (Balci et al., 2005; Godfrey et al., 2007). Congenital muscular dystrophy-dystroglycanopathies with or without mental retardation (type B) represent the intermediate range of the spectrum of dystroglycanopathies. They are less severe than muscular dystrophy-dystroglycanopathy with brain and eye anomalies (type A; see MDDGA1, {236670}), previously designated Walker-Warburg syndrome (WWS) or muscle-eye-brain disease (MEB), and more severe than limb-girdle muscular dystrophy-dystroglycanopathy (type C; see MDDGC1, {609308}). Genetic Heterogeneity of Congenital Muscular Dystrophy-Dystroglycanopathy with or without Mental Retardation (Type B)Congenital muscular dystrophy with mental retardation due to defective glycosylation of DAG1 is genetically heterogeneous. See also MDDGB2 (OMIM ), caused by mutation in the POMT2 gene (OMIM ); MDDGB3 (OMIM ), caused by mutation in the POMGNT1 gene (OMIM ); MDDGB4 (OMIM ), caused by mutation in the FKTN gene (OMIM ); MDDGB5 (OMIM ), caused by mutation in the FKRP gene (OMIM ); MDDGB6 (OMIM ), caused by mutation in the LARGE gene (OMIM ); and MDDGB14 (OMIM ), caused by mutation in the GMPPB gene (OMIM ).

Clinical Features

Top most frequent phenotypes and symptoms related to Muscular Dystrophy-dystroglycanopathy (congenital With Mental Retardation), Type B, 1; Mddgb1

  • Intellectual disability
  • Global developmental delay
  • Generalized hypotonia
  • Microcephaly
  • Scoliosis
  • Muscle weakness
  • Cataract
  • Flexion contracture
  • Motor delay
  • Myopia

And another 20 symptoms. If you need more information about this disease we can help you.

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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

Muscular Dystrophy-dystroglycanopathy (congenital With Mental Retardation), Type B, 1; Mddgb1 Is also known as muscular dystrophy, congenital, pomt1-related.

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.

Muscular Dystrophy-dystroglycanopathy (congenital With Mental Retardation), Type B, 1; Mddgb1 Recommended genes panels

Panel Name, Specifity and genes Tested/covered
Limb Girdle Muscular Dystrophy Advanced Evaluation.

By Athena Diagnostics Inc (United States).

SGCA, SGCB, SGCD, SGCG, TCAP, MYOT, TTN, CAPN3, DNAJB6, CAV3, TRIM32, FKRP, POMGNT1, POMT2, TRAPPC11, DAG1, ANO5, DES, DYSF, FKTN , (...)

View the complete list with 3 more genes
Specificity
5 %
Genes
100 %
Muscular Dystrophy Advanced Evaluation.

By Athena Diagnostics Inc (United States).

SGCA, SGCB, SGCD, SGCG, TCAP, MYOT, TTN, CCDC78, CAPN3, DNAJB6, CAV3, TRIM32, SYNE2, SYNE1, FKRP, POMGNT1, POMT2, TRAPPC11, DAG1, ANO5 , (...)

View the complete list with 13 more genes
Specificity
4 %
Genes
100 %
Congenital Muscular Dystrophy Advanced Sequencing Evaluation.

By Athena Diagnostics Inc (United States).

TCAP, RXYLT1, B4GAT1, SELENON, FKRP, POMGNT1, CHKB, POMT2, COL6A1, COL6A2, COL6A3, POMGNT2, B3GALNT2, DNM2, DPM2, FKTN, FHL1, ISPD, ITGA7, LAMA2 , (...)

View the complete list with 3 more genes
Specificity
5 %
Genes
100 %
Epilepsy Advanced Sequencing and CNV Evaluation - Developmental Brain Malformations.

By Athena Diagnostics Inc (United States).

SHH, STIL, SIX3, TUBA8, SLC25A19, DEAF1, ARFGEF2, RAB3GAP1, CENPJ, NDE1, FKRP, ARX, ASPM, POMGNT1, POMT2, TUBA1A, COL4A1, CPT2, WDR62, DCX , (...)

View the complete list with 20 more genes
Specificity
3 %
Genes
100 %
Epilepsy Advanced Sequencing and CNV Evaluation.

By Athena Diagnostics Inc (United States).

SCN1A, SCN1B, SCN2A, SCN3A, SCN5A, SCN8A, SCN9A, SHH, ST3GAL3, ST3GAL5, STIL, SIX3, SLC2A1, SLC35A2, SLC6A1, SLC6A8, SLC9A6, SMC1A, KDM5C, SMS , (...)

View the complete list with 214 more genes
Specificity
1 %
Genes
100 %
Neuromuscular Disorders Panel.

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

RYR1, BIN1, SCN4A, SGCA, SGCB, SGCD, SGCE, SGCG, SLC25A4, SUCLA2, SUCLG1, TWNK, TCAP, TIA1, TK2, TNNI2, TNNT1, TPM2, TPM3, MYOT , (...)

View the complete list with 124 more genes
Specificity
1 %
Genes
100 %
Test for POMT1-Related Muscle Diseases.

By Genome Diagnostics Laboratory University Medical Center Utrecht (Netherlands).

POMT1
Specificity
100 %
Genes
100 %
CMD panel.

By Genome Diagnostics Laboratory University Medical Center Utrecht (Netherlands).

FKRP, POMGNT1, POMT2, FKTN, POMT1
Specificity
20 %
Genes
100 %

You can get up to 134 more panels with our dedicated tool

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Sources and references

You can check the following sources for additional information.

OMIM Rare Disease Search Engine

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