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Disease Profile

Syndromic X-linked intellectual disability 7

Prevalence
Prevalence estimates on Rare Medical Network websites are calculated based on data available from numerous sources, including US and European government statistics, the NIH, Orphanet, and published epidemiologic studies. Rare disease population data is recognized to be highly variable, and based on a wide variety of source data and methodologies, so the prevalence data on this site should be assumed to be estimated and cannot be considered to be absolutely correct.
<1 / 1 000 000

< 331

US Estimated

< 514

Europe Estimated

Age of onset

No data available

ICD-10

Q87.8

Inheritance

Autosomal dominant A pathogenic variant in only one gene copy in each cell is sufficient to cause an autosomal dominant disease

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Autosomal recessive Pathogenic variants in both copies of each gene of the chromosome are needed to cause an autosomal recessive disease and observe the mutant phenotype

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X-linked
dominant X-linked dominant inheritance, sometimes referred to as X-linked dominance, is a mode of genetic inheritance by which a dominant gene is carried on the X chromosome.

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X-linked
recessive Pathogenic variants in both copies of a gene on the X chromosome cause an X-linked recessive disorder

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Mitochondrial or multigenic Mitochondrial genetic disorders can be caused by changes (mutations) in either the mitochondrial DNA or nuclear DNA that lead to dysfunction of the mitochondria and inadequate production of energy.

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Multigenic or multifactor Inheritance involving many factors, of which at least one is genetic but none is of overwhelming importance, as in the causation of a disease by multiple genetic and environmental factors.

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Not applicable

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Other names (AKA)

MRXS7; X-linked intellectual disability, Ahmad type

Categories

Congenital and Genetic Diseases; Nervous System Diseases

Summary

The following summary is from Orphanet, a European reference portal for information on rare diseases and orphan drugs.
orphanet

Orpha Number: 85274

Definition
A rare, X-linked syndromic intellectual disability disorder characterized by mild to moderate intellectual disability, obesity, hypogonadism, tapering fingers and microphallus with small or undescended testes, localized to Xp11.3-Xq23. Additional varible manifestations include alopecia, dental and eyesight anomalies, speech disabilities, and decreased body strength.

Visit the Orphanet disease page for more resources.

Symptoms

This table lists symptoms that people with this disease may have. For most diseases, symptoms will vary from person to person. People with the same disease may not have all the symptoms listed. This information comes from a database called the Human Phenotype Ontology (HPO) . The HPO collects information on symptoms that have been described in medical resources. The HPO is updated regularly. Use the HPO ID to access more in-depth information about a symptom.

Medical Terms Other Names
Learn More:
HPO ID
80%-99% of people have these symptoms
Hypogonadism
Decreased activity of gonads
0000135
Intellectual disability, moderate
IQ between 34 and 49
0002342
Obesity
Having too much body fat
0001513
Tapered finger
Tapered fingertips
Tapering fingers

[ more ]

0001182
30%-79% of people have these symptoms
Abnormality of dental morphology
Abnormality of dental shape
Abnormally shaped teeth
Deformity of teeth
Dental deformity
Dental malformations
Malformed teeth
Misshapen teeth
Misshapened teeth

[ more ]

0006482
Incomprehensible speech
0002546
Misalignment of teeth
Abnormal dental position
Abnormal teeth spacing
Abnormality of alignment of teeth
Abnormality of teeth spacing
Crooked teeth
Malaligned teeth
Malposition of teeth
Malpositioned teeth

[ more ]

0000692
Muscle weakness
Muscular weakness
0001324
Short stature
Decreased body height
Small stature

[ more ]

0004322
Sparse body hair
0002231
5%-29% of people have these symptoms
Cryptorchidism
Undescended testes
Undescended testis

[ more ]

0000028
Micropenis
Short penis
Small penis

[ more ]

0000054
Visual loss
Loss of vision
Vision loss

[ more ]

0000572
Percent of people who have these symptoms is not available through HPO
Intellectual disability
Mental deficiency
Mental retardation
Mental retardation, nonspecific
Mental-retardation

[ more ]

0001249

Learn more

These resources provide more information about this condition or associated symptoms. The in-depth resources contain medical and scientific language that may be hard to understand. You may want to review these resources with a medical professional.

In-Depth Information

  • The Monarch Initiative brings together data about this condition from humans and other species to help physicians and biomedical researchers. Monarch’s tools are designed to make it easier to compare the signs and symptoms (phenotypes) of different diseases and discover common features. This initiative is a collaboration between several academic institutions across the world and is funded by the National Institutes of Health. Visit the website to explore the biology of this condition.
  • Online Mendelian Inheritance in Man (OMIM) is a catalog of human genes and genetic disorders. Each entry has a summary of related medical articles. It is meant for health care professionals and researchers. OMIM is maintained by Johns Hopkins University School of Medicine. 
  • Orphanet is a European reference portal for information on rare diseases and orphan drugs. Access to this database is free of charge.
  • PubMed is a searchable database of medical literature and lists journal articles that discuss Syndromic X-linked intellectual disability 7. Click on the link to view a sample search on this topic.