Marden Walker Syndrome

Marden Walker Syndrome

National Organization for Rare Disorders, Inc.

Important

It is possible that the main title of the report Marden Walker 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.

Synonyms

  • Connective Tissue Disorder, Marden-Walker Type
  • MWS

Disorder Subdivisions

  • None

General Discussion

Marden-Walker syndrome is a rare connective tissue disorder that is inherited as an autosomal recessive trait. Patients with this disorder typically have a distinct facial expression, a cleft or high-arched palate, small or receding jaw (micrognathia), bone joints in a fixed position, growth delay and limited control of muscle movement. Marden-Walker syndrome affects males more often than females.

Symptoms

Patients with Marden-Walker syndrome have distinct facial features including an abnormality of the jaw, droopy eyelids, a flat bridge of the nose, low-set ears, and a fixed facial position.



Other characteristics of this disorder are curvature of the spine causing a hunchback, bent joints that will not move (joint contractures), a cleft or high-arched palate, growth delay, and slow muscle movement.



Other symptoms of Marden-Walker syndrome may include a small head circumference, heart abnormalities, an irregular sexual and urinary system, a decrease in bone mass, a breastbone that pushes out or sinks in, a small projecting piece of tissue on the front of the outer ear (preauricular tag), abnormally small eyes, a short neck, a small mouth and/or a low hairline.



A condition in which extra tissue causes obstruction of the small intestine (duodenal bands); narrowing of the ring that separates the stomach from the first part of the small intestine causing a blockage in the flow of partly digested food (pyloric stenosis); and/or loss of appetite, failure of the body to absorb nutrients adequately, stomach pain and weight loss caused by a condition in which there are not enough pancreatic hormones or enzymes (pancreatic insufficiency) have all been associated with Marden-Walker syndrome.

Causes

Marden-Walker syndrome is inherited as an autosomal recessive trait. The exact genetic malfunction is not yet established but some clinicians believe a single gene defect may be responsible.



Chromosomes, which are present in the nucleus of human cells, carry the genetic information for each individual. Human body cells normally have 46 chromosomes. Pairs of human chromosomes are numbered from 1 through 22, and the sex chromosomes are designated X and Y. Males have one X and one Y chromosome and females have two X chromosomes. Each chromosome has a short arm designated "p" and a long arm designated "q". Chromosomes are further sub-divided into many bands that are numbered. For example, "chromosome 11p13" refers to band 13 on the short arm of chromosome 11. The numbered bands specify the location of the thousands of genes that are present on each chromosome.



Genetic diseases are determined by the combination of genes for a particular trait that are on the chromosomes received from the father and the mother.



Recessive genetic disorders occur when an individual inherits the same abnormal gene for the same trait from each parent. If an individual receives one normal gene and one gene for the disease, the person will be a carrier for the disease, but usually will not show symptoms. The risk for two carrier parents to both pass the defective gene and, therefore, have an affected child is 25% with each pregnancy. The risk to have a child who is a carrier like the parents is 50% with each pregnancy. The chance for a child to receive normal genes from both parents and be genetically normal for that particular trait is 25%. The risk is the same for males and females.



All individuals carry a few abnormal genes. Parents who are close relatives (consanguineous) have a higher chance than unrelated parents to both carry the same abnormal gene, which increases the risk to have children with a recessive genetic disorder.

Affected Populations

Marden-Walker Syndrome is a very rare disorder that affects males more often than females with a ratio of 11 to 3. There have been approximately twenty cases reported in the medical literature.

Standard Therapies

Genetic counseling may be of benefit for patients and their families. Other treatment is symptomatic and supportive.

Investigational Therapies

Information on current clinical trials is posted on the Internet at www.clinicaltrials.gov. All studies receiving U.S. government funding, and some supported by private industry, are posted on this government web site.



For information about clinical trials being conducted at the NIH Clinical Center in Bethesda, MD, contact the NIH Patient Recruitment Office:



Tollfree: (800) 411-1222

TTY: (866) 411-1010

Email: prpl@cc.nih.gov



For information about clinical trials sponsored by private sources, contact:

www.centerwatch.com

References

TEXTBOOKS

Orrico A. Marden-Walker Syndrome. In: NORD Guide to Rare Disorders. Lippincott Williams & Wilkins. Philadelphia, PA. 2003:18.



Jones KL, ed. Smith's Recognizable Patterns of Human Malformation. 5th ed. W. B. Saunders Co., Philadelphia, PA; 1997:220-21.



Gorlin RJ, Cohen MMJr, Levin LS, eds. Syndromes of the Head and Neck. 3rd ed. Oxford University Press, London, UK; 1990:633-34.



JOURNAL ARTICLES

Orrico A, Galli L, Zappella M, et al. Additional case of Marden-Walker syndrome: support for the autosomal-recessive inheritance and refinement of phenotype in a surviving patient. J Child Neurol. 2001;16:150-53.



Garavelli L, Donadio A, Banchini G, et al. Marden-Walker syndrome: case report, nosologic discussion and aspects of counseling. Genet Couns. 2000;11:111-18.



Fryns JP, Willekens D, Van Schoubroeck D, et al. Marden-Walker syndrome versus isolated distal arthrogryposis: evidence the both conditions may be variable manifestations of the same mutated gene. Clin Genet. 1998;54:86-89.



Gripp KW, Scott CI Jr, Brockett BC, et al. Extending the spectrum of distal arthrogryposis. Am J Med Aenet. 1996;65:286-90.



Soekarman D, Volcke P, legius E, et al. Marden-Walker phenotype: a diagnostic dilemma. Genet Couns. 1996;7:31-39.



Kotzot D, Schinzel A. Marden-Walker syndrome in an adult. Clin Dysmorphol. 1995;4:260-65.



FROM THE INTERNET

McKusick VA, ed. Online Mendelian Inheritance In Man (OMIM). The Johns Hopkins University. Entry Number; 248700: Last Edit Date; 5/26/1999.



Marden-Walker syndrome (MWS). Jablonski's Syndromes database. nd. 2pp.

www.nlm.nih.gov/chi/jablonski/syndrome_cgi?index=415

Resources

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

Internet: http://rarediseases.info.nih.gov/GARD/



Madisons Foundation

PO Box 241956

Los Angeles, CA 90024

Tel: (310)264-0826

Fax: (310)264-4766

Email: getinfo@madisonsfoundation.org

Internet: http://www.madisonsfoundation.org



For a Complete Report

This is an abstract of a report from the National Organization for Rare Disorders, Inc.® (NORD). Cigna members can access the complete report by logging into myCigna.com. For non-Cigna members, a copy of the complete report can be obtained for a small fee by visiting the NORD website. The complete report contains additional information including symptoms, causes, affected population, related disorders, standard and investigational treatments (if available), and references from medical literature. For a full-text version of this topic, see http://www.rarediseases.org/search/rdblist.html.

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