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Acromesomelic dysplasia 1, Maroteaux type

Synonyms
ACROMESOMELIC DYSPLASIA 1; Acromesomelic Dysplasia, Maroteaux Type; Acromesomelic dwarfism Maroteux type; ST. HELENA DYSPLASIA
Modes of inheritance
Autosomal recessive inheritance (Orphanet)

Summary

The acromesomelic dysplasias are disorders in which there is disproportionate shortening of skeletal elements, predominantly affecting the middle segments (forearms and forelegs) and distal segments (hands and feet) of the appendicular skeleton. Acromesomelic dysplasia-1 (AMD1) is characterized by severe dwarfism (height below 120 cm) with shortening of the middle and distal segments of the limbs. This condition is usually diagnosed at birth and becomes more obvious in the first 2 years of life. X-rays show short broad fingers, square flat feet, and shortening of the long bones (particularly the forearms). The radius is bowed; the ulna is shorter than the radius, and its distal end is occasionally hypoplastic. The skull is dolichocephalic and a shortness of the trunk, with decreased vertebral height and narrowing of the lumbar interpedicular distances, is consistently observed. Facial appearance and intelligence are normal (summary by Faivre et al., 2000). Genetic Heterogeneity of Acromesomelic Dysplasia Additional autosomal recessive forms of acromesomelic dysplasia include acromesomelic dysplasia-2A (200700), -2B (228900), and -2C (201250), all caused by mutation in the GDF5 gene (601146) on chromosome 20q11; AMD3 (200700), caused by mutation in the BMPR1B gene (603248) on chromosome 4q22; and AMD4 (619636), caused by mutation in the PRKG2 gene (601591) on chromosome 4q21. An autosomal dominant form of acromesomelic dysplasia has also been reported (see 112910). [from OMIM]

Available tests

21 tests are in the database for this condition.

Check Related conditions for additional relevant tests.

Clinical tests (21 available)

Molecular Genetics Tests

Genes See tests for all associated and related genes

  • Also known as: AMD1, AMDM, ANPRB, ANPb, ECDM, GC-B, GCB, GUC2B, GUCY2B, NPRB, NPRBi, SNSK, NPR2
    Summary: natriuretic peptide receptor 2

Clinical features

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Imported from Human Phenotype Ontology (HPO)

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