Marshall–Smith syndrome explained

Marshall-Smith syndrome
Synonyms:Greig's syndrome, Polysyndactyly cephalopolysyndactyly syndrome, Accelerated skeletal maturation, Marshall-Smith type, Marshall–Smith–Weaver syndrome

Marshall-Smith Syndrome, discovered in 1971 (Marshall, Graham, Scott, Boner, & Smith), is characterized by unusual accelerated skeletal maturation (usually starting before birth) and symptoms like conspicuous physical characteristics, respiratory difficulties, and intellectual disability. Cases described in the literature show a clinical variability regarding related symptoms. For instance, respiratory difficulties are ranging from absent to severe difficulties.

Presentation

The syndrome is a rare clinical disorder.[1]

Genotype

The first gene - NFIX - that could cause the syndrome has been identified.[4] This gene is located on the short arm of chromosome 19 (19p13.1).

Diagnosis

Respiratory complications are often cause of death in early infancy.[1]

Differential diagnosis

Marshall–Smith syndrome is not to be confused with:

Terminology

Translated

Further reading

External links

Notes and References

  1. http://www.lookfordiagnosis.com/cases.php?index=10&lang=1&from=9376 Cases Reported On Abnormalities, Multiple. MEDICAL DIAGNOSIS AND MEDICINAL PLANTS
  2. Sperli D, Concolino D, Barbato C, Strisciuglio P, Andria G . Long survival of a patient with Marshall-Smith syndrome without respiratory complications . Journal of Medical Genetics . 30 . 10 . 877–9 . Oct 1993 . 8230168 . 1016575 . 10.1136/jmg.30.10.877 .
  3. Eich GF, Silver MM, Weksberg R, Daneman A, Costa T . Marshall-Smith syndrome: new radiographic, clinical, and pathologic observations . Radiology . 181 . 1 . 183–8 . Oct 1991 . 1909446 . 10.1148/radiology.181.1.1909446.
  4. Malan V, Rajan D, Thomas S, Shaw AC, dit Picard HL, Layet V, Till M, van Haeringen A, Mortier G, Nampoothiri S, Pušeljić S, Legeai-Mallet L, Carter NP, Vekemans M, Munnich A, Hennekam RC, Colleaux L, Cormier-Daire V . Distinct Effects of Allelic NFIX Mutations on Nonsense-Mediated mRNA Decay Engender Either a Sotos-like or a Marshall-Smith Syndrome . American Journal of Human Genetics . 87 . 2 . 189–198 . July 2010 . 10.1016/j.ajhg.2010.07.001. 20673863 . 2917711 .
  5. Williams DK, Carlton DR, Green SH, Pearman K, Cole TR . Marshall-Smith syndrome: the expanding phenotype . Journal of Medical Genetics . 34 . 10 . 842–5 . Oct 1997 . 9350818 . 1051092 . 10.1136/jmg.34.10.842 .