X-linked intellectual disability-macrocephaly-macroorchidism syndrome

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Disease Overview

X-linked intellectual disability-macrocephaly-macroorchidism syndrome is characterized by intellectual deficit affecting both sexes, macrocephaly, and macroorchidism in the majority of affected males. It has been described in 12 individuals from two generations of one family. Other males from this family did not display intellectual deficit but did present macroorchidism and macrocephaly. Transmission is X-linked and the causative gene has been localized to the q12-q21 region of the X chromosome.


Synonyms

  • Johnson syndrome

GARD Disease Summary

The Genetic and Rare Diseases Information Center (GARD) has information and resources for patients, caregivers, and families that may be helpful before and after diagnosis of this condition. GARD is a program of the National Center for Advancing Translational Sciences (NCATS), part of the National Institutes of Health (NIH).

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Orphanet

Orphanet has a summary about this condition that may include information on the diagnosis, care, and treatment as well as other resources. Some of the information and resources are available in languages other than English. The summary may include medical terms, so we encourage you to share and discuss this information with your doctor. Orphanet is the French National Institute for Health and Medical Research and the Health Programme of the European Union.

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National Organization for Rare Disorders