National Organization for Rare Disorders, Inc.
It is possible that the main title of the report Haim-Munk 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.
- Keratosis Palmoplantaris with Periodontopathia and Onychogryposis
- Kera. Palmoplant. Con., Pes Planus, Ony., Periodon., Arach., Acroosteolysis
- Cochin Jewish Disorder
Related Disorders List
Information on the following diseases can be found in the Related Disorders section of this report:
- Papillon-Lefevre Syndrome
- Schopf-Schulz-Passarge Syndrome
- Jadassohn-Lewandowsky Type Pachyonychia Congenita
- Mal de Meleda
Haim-Munk syndrome is a rare genetic disorder characterized by the development of red, scaly thickened patches of skin on the palms of the hands and soles of the feet (palmoplantar hyperkeratosis), frequent pus-producing (pyogenic) skin infections, overgrowth (hypertrophy) of the fingernails and toenails (onychogryposis), and degeneration of the structures that surround and support the teeth (periodontosis). Periodontosis usually results in the premature loss of teeth. Additional features associated with the disorder may include flat feet (pes planus); abnormally long, slender fingers and toes (arachnodactyly); loss of bone tissue at the ends of the fingers and/or toes (acroosteolysis); and/or other physical findings. Haim-Munk syndrome is inherited as an autosomal recessive trait.
Haim-Munk syndrome is a rare inherited disorder characterized by the development of dry scaly patches of skin that are abnormally red and thickened on the palms of the hands and soles of the feet (palmoplantar hyperkeratosis). Such patches may appear around the age of one to five years. However, in some cases, hyperkeratosis may be present at birth (congenital). These reddened patches are usually confined to the undersides of the hands and feet, but may eventually spread to the knees and elbows. In some rare cases, the upper portions of the hands and feet, the eyelids, the lips, and the cheeks may also be affected. Affected individuals also may have frequently recurring, pus-producing (pyogenic) skin infections.
In individuals with Haim-Munk syndrome, the teeth usually appear to form and erupt normally. However, most affected individuals develop chronic severe inflammation and degeneration of the tissues that surround and support the teeth (gingivitis and periodontosis). The gums and the underlying ligaments and bones that support the teeth are usually involved. When the primary (deciduous) teeth erupt, the gums become red, swell, and bleed (gingivitis). The mouth may become inflamed (stomatitis), lymph nodes may swell (regional adenopathy), and abnormal "tissue pockets" may form in the gums causing susceptibility to recurring bacterial infections. By the age of five years, the deciduous teeth often may become loose and fall out. Without appropriate treatment, most of the permanent teeth may be lost in the same manner by the age of approximately 16 years. Both deciduous and permanent teeth are usually affected in the order of their eruption.
In most cases, individuals with Haim-Munk syndrome exhibit overgrowth (hypertrophy) of the fingernails and toenails causing them to become abnormally thick to appear hooked and curved inward. Most affected individuals may also have flat feet (pes planus) and/or abnormally long, slender fingers and toes (arachnodactyly).
In addition, some individuals with Haim-Munk syndrome also experience numbness or tingling due to a lack of normal blood flow to the fingers and/or toes when exposed to cold temperatures (Raynaud's phenomenon). Bone tissue at the ends of the fingers and/or toes (acroosteolysis) may become frail and degrade in some cases. These findings (i.e., involving the nails, hands, and feet) may be helpful in distinguishing this disorder from Papillon-Lefevre syndrome.
In one reported cases, an individuals with Haim-Munk syndrome develop destructive inflammation of the joints (arthritis) of the wrists and shoulders.
Haim-Munk syndrome is inherited as an autosomal recessive trait. Genetic diseases are determined by two genes, one received from the father and one from 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%.
According to the medical literature, parents of many individuals with Haim-Munk syndrome have been closely related by blood (consanguineous). If both parents carry an altered (mutated) gene for the disorder, there is an increased risk that their children may inherit the two genes necessary for the development of the disorder.
Genetic analysis of several affected families (kindreds) suggests that Haim-Munk syndrome may be due to mutations of a gene (known as cathepsin C [CTSC]) located on the long arm (q) of chromosome 11* (11q14.1-q14.3). In addition, such analysis demonstrated that, in affected individuals, a shared, common set of genes (haplotype) surrounded the gene location (locus) and appeared to be transmitted with it as a unit, suggesting that the CTSC gene mutation was inherited from a single common ancestor.
Chromosomes are found in the nucleus of all body cells. They carry the genetic characteristics of each individual. Pairs of human chromosomes are numbered from 1 through 22, with an unequal 23rd pair of X and Y chromosomes for males and two X chromosomes for females. Each chromosome has a short arm designated as "p" and a long arm identified by the letter "q." Chromosomes are further subdivided into bands that are numbered. Therefore, chromosome 11q14.1 refers to band 14.1 on the long arm of chromosome 11.
Researchers also have found that certain mutations of the CTSC gene may cause Papillon-Lefevre syndrome (allelic disorder). (An allele is one of two or more alternative forms of a gene that may occupy a particular chromosomal location.) Papillon-Lefevre syndrome is a rare syndrome characterized by certain features similar to those seen in Haim-Munk syndrome. (For further information, please see the "Related Disorders" section of this report below.)
The CTSC gene regulates production (encodes for) of an enzyme (i.e., a lysosomal protease) known as cathepsin C that is expressed in various organs and tissues. It is also thought to play a role in the differentiation of certain tightly packed cells (epithelium) that form the protective outer layer of the skin, such as of the palms, soles, and knees, and bind gum tissues of the mouth (gingiva) to the tooth surface. Mutation of the CTSC gene may result in reduced levels of cathepsin C or defective cathepsin C that cannot perform its normal functions in the body.
Haim-Munk syndrome is a rare genetic disorder that affects males and females in equal numbers. The disorder is named after the investigators (Haim S, Munk J) who originally reported the disease entity in 1965 among members of an extended Jewish family (kindred) from Cochin, India. Since then, the disorder has been described in over 50 individuals in several multigenerational Jewish families in Cochin. It has sometimes been referred to as Cochin Jewish disorder.
Symptoms of the following disorders may be similar to those of Haim-Munk syndrome. Comparisons may be useful for a differential diagnosis:
Papillon-Lefevre syndrome is a rare genetic disorder characterized by the development of dry scaly patches of skin on the palms of the hands and the soles of the feet (palmar-plantar hyperkeratosis) and severe inflammation and degeneration of the structures that surround and support the teeth (periodontium), resulting in the premature loss of teeth (periodontoclasia). Additional features may include frequent pus-producing (pyogenic) skin infections, abnormalities of the nails (nail dystrophy), and/or excessive perspiration (hyperhidrosis). Papillon-Lefevre Syndrome is inherited as an autosomal recessive trait. As noted above (see "Causes"), evidence indicates that Papillon-Lefevre Syndrome may be due to certain mutations of the same gene (i.e., the CTSC gene) responsible for Haim-Munk syndrome. (For more information on this disorder, choose "Papillon Lefevre" as your search term in the Rare Disease Database.)
Schopf-Schulz-Passarge syndrome is a rare genetic disorder characterized by dry, scaly skin on the palms and the soles, fragile nails, and/or the development of cysts on the eyelids. Other findings may include the early loss of primary (deciduous) teeth, absence of some or all of the permanent teeth (hypodontia), and/or lack of body and/or scalp hair (hypotrichosis). Schopf-Schulz-Passarge syndrome is thought to be inherited as an autosomal dominant trait.
Jadassohn-Lewandowsky type pachyonychia congenita is a rare genetic disorder characterized by reddening, dryness, and a scaly appearance of the skin on the palms and soles (palmoplantar hyperkeratosis) and/or overgrowth and malformation of the fingernails and toenails (onychogryposis). Additional features may include the presence of teeth at birth (neonatal dentition), loss of scalp hair, excessive sweating (hyperhidrosis) of the hands and feet, hoarseness, and/or, in some cases, respiratory distress. Mental retardation may also be present in some cases. Jadassohn-Lewandowsky type pachyonychia congenita is thought to be inherited as an autosomal dominant trait.
Meleda disease is an extremely rare inherited skin disorder characterized by the slowly progressive development of dry, thick patches of skin on the palms of the hands and soles of the feet (palmoplantar hyperkeratosis). Affected skin may be unusually red (erythema) and become abnormally thick and scaly (symmetrical cornification). Affected children may also exhibit various abnormalities of the nails; excessive sweating (hyperhidrosis) associated with an unpleasant odor; and/or, in some cases, development of small, firm raised lesions (lichenoid plaques). The range and severity of symptoms may vary from case to case. Meleda disease is inherited as an autosomal recessive trait. (For more information on this disorder, choose "Meleda" as your search term in the Rare Disease Database.)
There are several additional disorders that are characterized by skin abnormalities similar to those observed in Haim-Munk syndrome. These may include psoriasis, epidermolytic hyperkeratosis, and some forms of ectodermal dysplasias. (For more information on these disorders, choose "Psoriasis," "Epidermolytic Hyperkeratosis," and "Ectodermal Dysplasia" as your search terms in the Rare Disease Database.)
The diagnosis of Haim-Munk syndrome may be confirmed by a thorough clinical evaluation that includes a detailed patient history and identification of characteristic physical findings. In some cases, skin abnormalities, including characteristic red, scaly thick patches of skin (hyperkeratosis) on the palms of the hands and the soles of the feet, may be apparent at birth (congenital) or during infancy. In most cases, Haim-Munk syndrome may not be firmly distinguished from other disorders with similar skin abnormalities until the inflammation and degeneration of the tissues surrounding and supporting the teeth (periodontium) becomes apparent. This usually occurs between the third and fifth year of life, when the infant teeth (deciduous) begin to erupt.
In addition, identification of physical findings specific to Haim-Munk syndrome is necessary to distinguish this disorder from Papillon-Lefevre Syndrome. These findings may include the abnormal growth of fingernails and toenails (onychogryphosis), unusually long, slender fingers and toes (arachnodactyly), heightened sensitivity of the fingers and toes to cold temperatures, loss of bone tissue in fingers and toes (acroosteolysis), and/or flat feet (pes planus).
The treatment of Haim-Munk 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, surgeons, physicians who evaluate and treat skin problems (dermatologists), dentists, specialists in treating disorders affecting the structures supporting and surrounding the teeth (periodontists), specialists in treating disorders affecting the feet (podiatrists), and other health care professionals may need to systematically and comprehensively plan an affected child's treatment.
Physicians may carefully monitor affected individuals to help prevent and ensure early identification of infection. If infection occurs, antibiotic therapy may be prescribed.
Limited success has been found in treating associated skin abnormalities with topical lubricants. In some cases, surgery and skin grafts may be used to alleviate skin problems. Use of special footwear may help affected individuals who exhibit flat feet (pes planus). Protective clothing may alleviate the discomfort experienced during exposure to cold temperatures.
Genetic counseling will be of benefit for affected individuals and their families. Other treatment is symptomatic and supportive.
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FROM THE INTERNET
McKusick VA., ed. Online Mendelian Inheritance in Man (OMIM). Baltimore. MD: The Johns Hopkins University; Entry No:245010; Last Update:04/25/2007. Available at: http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=245010 Accessed on: September 25, 2007.
McKusick VA., ed. Online Mendelian Inheritance in Man (OMIM). Baltimore. MD: The Johns Hopkins University; Entry No:245000; Last Update:11/07/2006. Available at: http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=245000 Accessed on: September 25, 2007.
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