Health Information



X-linked Opitz G/BBB syndrome

National Organization for Rare Disorders, Inc.


It is possible that the main title of the report X-linked Opitz G/BBB syndrome is not the name you expected. Please check the synonyms listing to find the alternate name(s) and disorder subdivision(s) covered by this report.


  • XLOS
  • Opitz BBBG syndrome
  • Opitz-G syndrome
  • telecanthus-hypospadius syndrome (obsolete)
  • hypertelorism-hypospadius syndrome (obsolete)

Disorder Subdivisions

  • None

General Discussion

X-linked Opitz G/BBB syndrome is a rare genetic disorder characterized by facial anomalies, respiratory and genitourinary abnormalities and other midline defects as well as developmental delay or mental retardation. There is a wide variation in severity of this condition, even among members of the same family. X-linked Opitz G/BBB syndrome is an X-linked genetic condition associated with alterations (mutations) in the MID1 gene.


Children's Craniofacial Association

13140 Coit Road

Suite 517

Dallas, TX 75240


Tel: (214)570-9099

Fax: (214)570-8811

Tel: (800)535-3643



FACES: The National Craniofacial Association

PO Box 11082

Chattanooga, TN 37401

Tel: (423)266-1632

Fax: (423)267-3124

Tel: (800)332-2373



The Arc

1825 K Street NW, Suite 1200

Washington, DC 20006

Tel: (202)534-3700

Fax: (202)534-3731

Tel: (800)433-5255

TDD: (817)277-0553




P.O. Box 751112

Limekiln, PA 19535


Tel: (702)769-9264

Fax: (702)341-5351

Tel: (888)486-1209



Cleft Palate Foundation

1504 East Franklin Street

Suite 102

Chapel Hill, NC 27514-2820


Tel: (919)933-9044

Fax: (919)933-9604

Tel: (800)242-5338



National Foundation for Facial Reconstruction

333 East 30th Street, Lobby Unit

New York, NY 10016

Tel: (212)263-6656

Fax: (212)263-7534


AboutFace International

123 Edward Street, Suite 1003


Ontario, M5G 1E2


Tel: 4165972229

Fax: 4165978494

Tel: 8006653223



Genetic and Rare Diseases (GARD) Information Center

PO Box 8126

Gaithersburg, MD 20898-8126

Tel: (301)251-4925

Fax: (301)251-4911

Tel: (888)205-2311

TDD: (888)205-3223


Cleft Lip and Palate Foundation of Smiles

2044 Michael Ave SW

Wyoming, MI 49509

Tel: (616)329-1335



For a Complete Report

This is an abstract of a report from the National Organization for Rare Disorders (NORD). A copy of the complete report can be downloaded free from the NORD website for registered users. The complete report contains additional information including symptoms, causes, affected population, related disorders, standard and investigational therapies (if available), and references from medical literature. For a full-text version of this topic, go to and click on Rare Disease Database under "Rare Disease Information".

The information provided in this report is not intended for diagnostic purposes. It is provided for informational purposes only. NORD recommends that affected individuals seek the advice or counsel of their own personal physicians.

It is possible that the title of this topic is not the name you selected. Please check the Synonyms listing to find the alternate name(s) and Disorder Subdivision(s) covered by this report

This disease entry is based upon medical information available through the date at the end of the topic. Since NORD's resources are limited, it is not possible to keep every entry in the Rare Disease Database completely current and accurate. Please check with the agencies listed in the Resources section for the most current information about this disorder.

For additional information and assistance about rare disorders, please contact the National Organization for Rare Disorders at P.O. Box 1968, Danbury, CT 06813-1968; phone (203) 744-0100; web site or email

Last Updated:  1/17/2012

Copyright  1988, 1989, 2002, 2009, 2012 National Organization for Rare Disorders, Inc.

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