Coffin-lowry syndrome Q89.8

Author: Prof. Dr. med. Peter Altmeyer

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Last updated on: 29.10.2020

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History
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Coffin, 1966; Lowry, 1971

Definition
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Distinct dysmorphia syndrome with progressive swelling of connective tissue and severe developmental delay.

Occurrence/Epidemiology
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Panethnic with family history.

Etiopathogenesis
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X-linked dominant inheritance. Mutations of the RSK2 gene (gene locus Xp22.2) cause an enzyme defect of a serine-threonine protease, which is part of the RAS signalling cascade.

Clinical features
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Among other things, psychomotor and somatic retardation, facial dysmorphia with clumsy facial features (increase in connective tissue), scoliosis, four-finger furrows, livedo reticularis, varicosis.

Literature
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  1. Coffin GS, Siris E, Wegienka LC (1966) Mental retardation with osteocartilaginous anomalies. On J Dis Child 112: 205-213
  2. Hanauer A, Young ID (2002) Coffin-Lowry syndrome: clinical and molecular features. J Med Genet 39: 705-713
  3. Horn D, Delaunoy JP, Kunze J (2001) Prenatal diagnosis in Coffin-Lowry syndrome demonstrates germinal mosaicism confirmed by mutation analysis. Prenatal diagnosis 21: 881-884
  4. Hunter AG (2002) Coffin-Lowry syndrome: a 20-year follow-up and review of long-term outcomes. At J Med Genet 111: 345-355
  5. Lowry B, Miller JR, Fraser FC (1971) A new dominant gene mental retardation syndrome; associated with small stature, tapering fingers, characteristic facies, and possible hydrocephalus. On J Dis Child 121: 496-500
  6. Nelson GB, Hahn JS (2003) Stimulus-induced drop episodes in coffin-lowry syndrome. Pediatrics 111: E197-202

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Last updated on: 29.10.2020