|55 Kenosia Avenue
Danbury, CT 06810
Toll Free: 1.800.999.6673
The National Organization for Rare Disorders (NORD) web site, its databases, and the contents thereof are copyrighted by NORD. No part of the NORD web site, databases, or the contents may be copied in any way, including but not limited to the following: electronically downloading, storing in a retrieval system, or redistributing for any commercial purposes without the express written permission of NORD. Permission is hereby granted to print one hard copy of the information on an individual disease for your personal use, provided that such content is in no way modified, and the credit for the source (NORD) and NORD’s copyright notice are included on the printed copy. Any other electronic reproduction or other printed versions is strictly prohibited.
The information in NORD’s Rare Disease Database is for educational purposes only. It should never be used for diagnostic or treatment purposes. If you have questions regarding a medical condition, always seek the advice of your physician or other qualified health professional. NORD’s reports provide a brief overview of rare diseases. For more specific information, we encourage you to contact your personal physician or the agencies listed as “Resources” on this report.
Copyright 1993, 2005, 2009
NORD is very grateful to William J. Kimberling, PhD, FACMG, Director of the Center for the Study and Treatment of Usher Syndrome, Boys Town Hospital, Professor of Biomedical Sciences, Creighton Medical School, Visiting Professor of Ophthalmology, University of Iowa Medical School, for assistance in the preparation of this report.
Rosenberg-Chutorian syndrome is an extremely rare genetic disorder characterized by the triad of hearing loss, degeneration of the optic nerve (optic atrophy) and neurological abnormalities, specifically disease of the nerves outside of the central nervous system (peripheral neuropathy). The arms and legs are most often affected by peripheral neuropathy. Rosenberg-Chutorian syndrome is inherited as an X-linked disorder with occasional mild symptoms present in the female carrier.
At least two other disorders are characterized by optic atrophy, hearing loss and peripheral neuropathy: Iwashita syndrome and Hagemoser syndrome. Most researchers consider these two disorders and Rosenberg-Chutorian syndrome separate disorders.
The symptoms of Rosenberg-Chutorian syndrome often become apparent during infancy or early childhood. The clinical triad of hearing loss, optic atrophy, and peripheral neuropathy characterizes the disorder.
Individuals with Rosenberg-Chutorian syndrome develop sensorineural hearing loss. In people with type of hearing impairment, sound may be conducted normally through the external and middle ear. However, sound vibrations are not properly transmitted to the brain due to a defect of the inner ear or the auditory nerve, resulting in hearing loss. (With normal hearing, a portion of the inner ear serves to convert sound vibrations to nerve impulses, which are then transmitted via the auditory nerve to the brain.) Although such sensorineural hearing loss is usually present at birth, it may not be detected until later during infancy. As affected children age, deafness may cause delays or impairment in speech development. Hearing loss may be slowly progressive.
Individuals with Rosenberg-Chutorian syndrome also develop degeneration (atrophy) of the optic nerve (optic atrophy). The optic nerve is the structure that sends electrical impulses from the retina to the brain. Optic atrophy results in the loss of visual acuity.
Noninflammatory disease affecting many nerves (polyneuropathy) is another sign of Rosenberg-Chutorian syndrome. The nerves outside the central nervous system, especially those of the arms and legs are affected (peripheral neuropathy). Individuals may develop weakness and wasting (atrophy) of the muscles in the arms and legs. Destruction of the fatty covering surrounding nerves (demyelination) has been present in a few affected individuals.
Rosenberg-Chutorian syndrome is caused by a mutation in the phosphoribosylpyrophosphate synthetase I (PRPS1) gene located on the X chromosome.
Rosenberg-Chutorian syndrome is inherited as an X-linked disorder. X-linked genetic disorders are conditions caused by an abnormal gene on the X chromosome and occur mostly in males. Females that have a disease gene present on one of their X chromosomes are carriers for that disorder. Carrier females usually do not display symptoms because females have two X chromosomes and one is inactivated so that the genes on that chromosome are nonfunctioning. It is usually the X chromosome with the abnormal gene that is inactivated. However, some females who carry a PRPS1 gene mutation show variably mild symptoms. Males have one X chromosome that is inherited from their mother and if a male inherits an X chromosome that contains a disease gene he will develop the disease. Female carriers of an X-linked disorder have a 25% chance with each pregnancy to have a carrier daughter like themselves, a 25% chance to have a non-carrier daughter, a 25% chance to have a son affected with the disease and a 25% chance to have an unaffected son.
Males with X-linked disorders pass the disease gene to all of their daughters who will be carriers. A male cannot pass an X-linked gene to his sons because males always pass their Y chromosome instead of their X chromosome to male offspring.
Rosenberg-Chutorian syndrome is a rare genetic disorder that affects males more often than females. Symptoms are more severe in males. Some carrier females may exhibit symptoms of the disorder.
Fewer than 10 cases have been reported in the medical literature. The disorder was first described in the medical literature in 1967.
Symptoms of the following disorders can be similar to those of Rosenberg-Chutorian syndrome. Comparisons may be useful for a differential diagnosis:
Iwashita syndrome is an extremely rare disorder characterized by optic atrophy, hearing loss and progressive disease of the many nerves (polyneuropathy). Fewer than 10 cases of Iwashita syndrome have been reported in the medical literature. Iwashita syndrome is differentiated from Rosenberg-Chutorian syndrome by mode of inheritance. Iwashita syndrome is inherited as an autosomal recessive trait.
Hagemoser syndrome is an extremely rare disorder characterized by optic atrophy, hearing loss, and disease affecting the nerves outside of the central nervous system (peripheral neuropathy). Fewer than 10 cases of Hagemoser syndrome have been reported in the medical literature. Hagemoser syndrome is differentiated from Rosenberg-Chutorian syndrome by mode of inheritance. Hagemoser syndrome is inherited as an autosomal dominant trait.
Charcot Marie Tooth disease encompasses a group of hereditary neuropathies in which the motor and sensory peripheral nerves are affected, resulting in muscle weakness and atrophy, primarily in the legs and sometimes in the hands. CMT hereditary neuropathy affects the nerves that control many muscles in the body. The nerve cells in individuals with this disorder are not able to send electrical signals properly because of abnormalities in the nerve axon or abnormalities in the insulation (myelin) around the axon. Specific gene mutations are responsible for the abnormal function of the peripheral nerves. Charcot Marie Tooth hereditary neuropathy can be inherited in an autosomal dominant, autosomal recessive or X-linked mode of inheritance. (For more information on this disorder, choose "Charcot-Marie-Tooth" as your search term in the Rare Disease Database.)
A diagnosis of Rosenberg-Chutorian syndrome is made based upon a thorough clinical evaluation, a detailed patient history and identification of characteristic findings. Molecular genetic testing for PRSP1 gene mutations is available to confirm the diagnosis. Carrier testing and prenatal diagnosis are available if a PRSP1 gene mutation has been identified in an affected family member.
The treatment of Rosenberg-Chutorian syndrome is directed toward the specific symptoms that are apparent in each individual. Treatment may require the coordinated efforts of a team of specialists. Pediatricians, neurologists, speech pathologists, specialists who asses and treat hearing problems (audiologists), eye specialists, and other healthcare professionals may need to systematically and comprehensively plan an affected child's treatment.
Physical and occupational therapy may be useful to maintain as much functioning as possible. A cochlear implant may help individuals with hearing loss. Braces and other orthopedic devices may also be of aid in walking and moving.
Genetic counseling is recommended for affected individuals and their families. Other treatment is symptomatic and supportive.
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
For information about clinical trials sponsored by private sources, contact:
Please note that some of these organizations may provide information concerning certain conditions potentially associated with this disorder (e.g., hearing loss, eye abnormalities).
11730 Plaza America Drive, Suite 300
Reston, VA 20190
Phone #: 703-790-8466
800 #: 800-222-2336
Home page: http://www.audiology.org
1444 I Street NW
Washington, DC 20005 United States
Phone #: 202-449-1100
800 #: 800-327-9355
Home page: http://www.betterhearing.org
PO Box 8126
Gaithersburg, MD 20898-8126
Phone #: 301-251-4925
800 #: 888-205-2311
Home page: http://rarediseases.info.nih.gov/GARD/
7910 Woodmont Avenue
Bethesda, MD 20814
Phone #: 301-657-2248
800 #: N/A
Home page: http://www.hearingloss.org
111 E 59th St
New York, NY 10022-1202
Phone #: N/A
800 #: 800-829-0500
Home page: http://www.lighthouse.org
1275 Mamaroneck Avenue
White Plains, NY 10605
Phone #: 914-997-4488
800 #: N/A
Home page: http://www.marchofdimes.com
31 Center Dr
Building 31, Room 2A32
Bethesda, MD 20892
Phone #: N/A
800 #: 800-370-2943
Home page: http://www.nichd.nih.gov/
P.O. Box 5801
Bethesda, MD 20824
Phone #: 301-496-5751
800 #: 800-352-9424
Home page: http://www.ninds.nih.gov/
Kimberling WJ. Rosenburg-Chutorian Syndrome. In: NORD Guide to Rare Disorders. Lippincott Williams & Wilkins. Philadelphia, PA. 2003:585.
Buyce ML., ed. Birth Defects Encyclopedia. Dover, MA: Blackwell Scientific Publications; For: The Center for Birth Defects Information Services Inc; 1990:510.
Magalini SI, et al., eds. Dictionary of Medical Syndromes. 4th ed.New York, NY: Lippincott-Raven Publishers; 1997:63.
Sugano M, Hirayama K, Saito T, Tsukamoto T, Yamamoto T. Optic atrophy, sensorineural hearing loss and polyneuropathy - a case of sporadic Rosenberg-Chutorian syndrome. Fukushima J Med Sci. 1992;38:57-65.
Hagemoser K, Weinstein J, Bresnick G, Nellis R, Kirkpatrick S, Pauli RM. Optic atrophy, hearing loss and polyneuropathy. Am J Med Genet. 1989;33:61-5.
Iwashita H, Inoue N, Araki S, Kuroiwa Y. Optic atrophy, neural deafness, and distal neurogenic amyotrophy; report of a family with two affected siblings. Arch Neurol. 1970;22:357-64.
Rosenberg RN, Chutorian A. Familial opticacoustic nerve degeneration and polyneuropathy. Neurology. 1967;17:827-32.
FROM THE INTERNET
McKusick VA., ed. Online Mendelian Inheritance in Man (OMIM). Baltimore. MD: The Johns Hopkins University; Entry No:165199; Last Update:12/2/1994. Available at: http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=165199 Accessed On: April 20, 2005.
McKusick VA., ed. Online Mendelian Inheritance in Man (OMIM). Baltimore. MD: The Johns Hopkins University; Entry No:258650; Last Update:3/11/1994. Available at: http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=258650 Accessed On: April 20, 2005.
Report last updated: 2009/11/03 00:00:00 GMT+0