Mental Retardation-hypotonic Facies Syndrome, X-linked, 1; Mrxhf1

Description

The term 'X-linked mental retardation-hypotonic facies syndrome' comprises several syndromes previously reported separately. These include Juberg-Marsidi, Carpenter-Waziri, Holmes-Gang, and Smith-Fineman-Myers syndromes as well as 1 family with X-linked mental retardation with spastic paraplegia. All these syndromes were found to be caused by mutation in the XH2 gene and are characterized primarily by severe mental retardation, dysmorphic facies, and a highly skewed X-inactivation pattern in carrier women (Abidi et al., 2005). Other more variable features include hypogonadism, deafness, renal anomalies, and mild skeletal defects.X-linked alpha-thalassemia/mental retardation syndrome (ATR-X; {301040}) is an allelic disorder with a similar phenotype with the addition of alpha-thalassemia and Hb H inclusion bodies in erythrocytes.

Clinical Features

Top most frequent phenotypes and symptoms related to Mental Retardation-hypotonic Facies Syndrome, X-linked, 1; Mrxhf1

  • Intellectual disability
  • Seizures
  • Global developmental delay
  • Short stature
  • Generalized hypotonia
  • Hearing impairment
  • Microcephaly
  • Growth delay
  • Hypertelorism
  • Micrognathia

And another 92 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

Mental Retardation-hypotonic Facies Syndrome, X-linked, 1; Mrxhf1 Is also known as smith-fineman-myers syndrome 1, chudley-lowry syndrome, holmes-gang syndrome, mental retardation, x-linked, with growth retardation, deafness, and microgenitalism, xlmr-hypotonic facies syndrome, carpenter-waziri syndrome, sfms, sfm1, jms, juberg-marsidi syndrome.

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.

Mental Retardation-hypotonic Facies Syndrome, X-linked, 1; Mrxhf1 Recommended genes panels

Panel Name, Specifity and genes Tested/covered
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 %
Epilepsy Advanced Sequencing and CNV Evaluation - Intellectual Disability.

By Athena Diagnostics Inc (United States).

SLC35A2, SLC6A8, SLC9A6, SMC1A, KDM5C, SMS, SNAP25, CDKL5, SYN1, SYP, CACNA2D1, PCDH19, ARHGEF9, DEAF1, CASK, ALG9, RAB39B, BCKDK, ARX, SPATA5 , (...)

View the complete list with 36 more genes
Specificity
2 %
Genes
100 %
Syndromic Autism Panel.

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

SCN1A, SCN2A, BRAF, SLC2A1, SLC9A6, SMC1A, KDM5C, CDKL5, STXBP1, TBR1, TCF4, MED12, TSC1, TSC2, UBE3A, HDAC8, CNTNAP2, FOXP2, CACNA1C, NSD1 , (...)

View the complete list with 63 more genes
Specificity
2 %
Genes
100 %
NGS XLID Panel.

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

RPL10, RPS6KA3, SLC16A2, SLC9A6, SMC1A, KDM5C, SMS, SOX3, CDKL5, SYN1, SYP, TAF1, TIMM8A, TSPAN7, MED12, UBE2A, USP9X, ZMYM3, ZNF41, ZNF711 , (...)

View the complete list with 94 more genes
Specificity
1 %
Genes
100 %
Rett-Angelman Syndrome 2nd-Tier Sequencing Panel.

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

SLC2A1, SLC9A6, CDKL5, TCF4, UBE3A, CNTNAP2, PCDH19, ZEB2, ARX, MBD5, EHMT1, CTNNB1, FOLR1, FOXG1, MECP2, MEF2C, NRXN1, OPHN1, ATRX, PNKP , (...)

View the complete list with 1 more genes
Specificity
5 %
Genes
100 %
ATRX syndrome.

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

ATRX
Specificity
100 %
Genes
100 %
Chudley-Lowry/Smith-Fineman-Meyers.

By Center for Human Genetics, Inc (United States).

ATRX
Specificity
100 %
Genes
100 %
Comprehensive Brain Malformation Panel.

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

SHH, STIL, SIX3, SLC9A6, SOX2, CDKL5, TGIF1, MED12, CEP41, TUBA8, UBE3A, VLDLR, VRK1, ZIC2, ACTB, MRPS16, NSD1, RAB18, ACTG1, SLC25A19 , (...)

View the complete list with 86 more genes
Specificity
1 %
Genes
100 %

You can get up to 113 more panels with our dedicated tool

Learn more

Sources and references

You can check the following sources for additional information.

ORPHANET 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 RAMON SYNDROME LYMPHEDEMA-DISTICHIASIS SYNDROME