Bart-Pumphrey syndrome
Last updated 18 Aug 2020
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Bart-Pumphrey syndrome is characterised by nail and skin abnormalities and hearing loss.
Description
Bart-Pumphrey syndrome is characterised by nail and skin abnormalities and hearing loss.
People with Bart-Pumphrey syndrome typically have a white discoloration of the nails (leukonychia); the nails may also be thick and crumbly. Affected individuals often have wart-like (verrucous) skin growths called knuckle pads on the knuckles of the fingers and toes. They may also have thickening of the skin on the palms of the hands and soles of the feet (palmoplantar keratoderma). The skin abnormalities generally become noticeable during childhood.
The hearing loss associated with Bart-Pumphrey syndrome ranges from moderate to profound and is typically present from birth (congenital).
The signs and symptoms of this disorder may vary even within the same family; while almost all affected individuals have hearing loss, they may have different combinations of the other associated features.
Inheritance patterns
The source lists the following possible inheritance patterns: Autosomal dominant. More than one pattern can apply in different cases.
Related genes
Other names
Knuckle pads, deafness, and leukonychia syndrome
Knuckle pads, leukonychia, and sensorineural deafness
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Further reading and references
- Bart-Pumphrey syndrome; MedlinePlus, National Library of Medicine.
- Alexandrino F, Sartorato EL, Marques-de-Faria AP, Steiner CE. G59S mutation in the GJB2 (connexin 26) gene in a patient with Bart-Pumphrey syndrome. Am J Med Genet A. 2005 Jul 30;136(3):282-4. doi: 10.1002/ajmg.a.30822. No abstract available.
- Lee JR, White TW. Connexin-26 mutations in deafness and skin disease. Expert Rev Mol Med. 2009 Nov 19;11:e35. doi: 10.1017/S1462399409001276.
- Ramer JC, Vasily DB, Ladda RL. Familial leuconychia, knuckle pads, hearing loss, and palmoplantar hyperkeratosis: an additional family with Bart-Pumphrey syndrome. J Med Genet. 1994 Jan;31(1):68-71. doi: 10.1136/jmg.31.1.68.
- Richard G, Brown N, Ishida-Yamamoto A, Krol A. Expanding the phenotypic spectrum of Cx26 disorders: Bart-Pumphrey syndrome is caused by a novel missense mutation in GJB2. J Invest Dermatol. 2004 Nov;123(5):856-63. doi: 10.1111/j.0022-202X.2004.23470.x.
- Xu J, Nicholson BJ. The role of connexins in ear and skin physiology - functional insights from disease-associated mutations. Biochim Biophys Acta. 2013 Jan;1828(1):167-78. doi: 10.1016/j.bbamem.2012.06.024. Epub 2012 Jul 13.
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