A number sign (#) is used with this entry because Dyggve-Melchior-Clausen disease (DMC) is caused by homozygous or compound heterozygous mutation in. Dyggve-Melchior-Clausen disease (DMC) is a rare skeletal disorder Differential diagnoses include Smith-McCort syndrome (SMC; see this term), which. Dyggve-Melchior-Clausen (DMC) syndrome is a rare autosomal recessive disorder characterized by the association of spondylo-epi-metaphyseal dysplasia and.

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Clinical and molecular findings in three families supporting genetic heterogeneity in Smith-McCort dysplasia. The material is in no way intended to replace professional medical care by dyhgve-melchior-clausen qualified specialist and should not be used as a basis for diagnosis or treatment.

Rare Disease Database

Ayndrome the exception of reduced length, affected individuals usually are normal at birth. The pathognomonic radiographic findings for DMC and SMS include constrictions in the middle third of the vertebral bodies a double-humped appearanceand a lacy appearance of the upper portion of the iliac crest hipbone Hall-Craggs and Chapman As affected individuals age, growth deficiency results in short stature dwarfism dyggve-melchior-claisen, in part, due to a disproportionately short neck and trunk, and coxa vara a hip deformity in which the femur [thigh bone] is angled toward the midline of the body.

Morphological and biochemical findings in cartilage growth zone. Mutational analysis of DYM currently is available http: Genetic counseling Transmission is autosomal recessive.

This disease entry is based upon medical information available through May 25, The gene encodes for a Rab protein and the mutation lead to a marked deficiency of this protein. J Magnet Reson Imag. Together we are strong.

MRI findings in DMC include hypoplasia of the odontoid process, posterior disk protrusions in the lumbar vertebrae and the enlargement of the posterior common vertebral ligament Paupe et al.


Am J Hum Genet. While the OMIM database is open to the public, users seeking information about a personal medical or genetic condition are urged to consult with a qualified physician for diagnosis and for answers to personal questions. The Dyggve-Melchior-Clausen syndrome in Indian siblings. Check this box if you wish to receive a copy of your message.

The cleft palate is present at birth but other characteristics may not appear for 2 or 3 years. Other radiographic abnormalities seen in DMC have been extensively reviewed by Spranger et al.

Electron microscopy demonstrated chondrocytes with dilated cisternae of rough endoplasmic reticulum RER containing fine granular or amorphous material similar to what had been reported in cases of DMC syndrome.

Heterogeneity of Dyggve-Melchior-Clausen dwarfism. In a review of DMC disease, Beighton gave information on the 3 authors whose names are attached to the disorder. In contrast to Morquio syndrome, individuals with DMC have normal hearing and teeth, lack cloudy corneas and lack the urinary mucopolysaccharides, but do have intellectual disability.

Kniest dysplasia is also caused by mutations in the COL2A1 gene.

Differential diagnoses include Smith-McCort syndrome SMC; see this termwhich presents with the same clinical and radiological features as DMC but without intellectual deficiency, and Morquio disease or mucopolysaccharidosis type 4, MPS IV; see this termwhich is clinically similar but has specific radiological and enzymatic dyggve-mepchior-clausen.

Disease definition Dyggve-Melchior-Clausen disease DMC is a rare skeletal disorder belonging to the group of spondyloepimetaphyseal dysplasias see this term. Last Edited October 1, The content of the website and databases of the National Organization for Rare Disorders NORD is copyrighted dyggve-nelchior-clausen may not be reproduced, copied, downloaded or disseminated, in any way, for any commercial or public purpose, without prior written authorization and approval from NORD.


Am J Med Genet.

KEGG DISEASE: Dyggve-Melchior-Clausen disease and Smith-McCort dysplasia

Diagnosis is based on radiological evidence revealing platyspondyly with double vertebral humps, epiphyseal and metaphyseal dysplasia dyggve-mrlchior-clausen scalloped iliac crests. Spinal dyggve-melchior-clausfn compression due to atlantoaxial instability occurs in both. Normally, there is growth deficiency resulting in short stature. Comparisons may be syndrrome for a differential diagnosis: Clinical description Clinically, DMC is characterized by progressive dwarfism with short trunk, protruding sternum, microcephaly and mental retardation of varying severity.

The above findings suggest that lack of dymeclin may lead to abnormal processing or defective synthesis of cartilage protein El Ghouzzi et al. Affected individuals may also have flat facies, a short neck and barrel-shaped chest a rounded, bulging chest with pectus carinatum. In autosomal recessive conditions, if an individual receives one normal gene and one gene for the disease, the person is a carrier for the disease, but usually will not have any clinical manifestations of the condition.

Unfortunately, it is not free to produce. Spondyloepiphyseal dysplasia tarda, an X-linked inherited disorder, is also a rare genetic disorder that primarily affects males and is characterized by short stature, kyphoscoliosis, and lumbar lordosis.

Dyggve-mrlchior-clausen and treatment Management requires both a multidisciplinary approach and a long-term follow-up as the disease is progressive. Other features may include flat facies, myopia progressing to retinal detachment, kyphoscoliosis and platyspondyly.