Kindler syndrome: Extension of FERMT1 mutational spectrum and natural history

C Has, D Castiglia, M del Rio, M Garcia Diez… - Human …, 2011 - Wiley Online Library
C Has, D Castiglia, M del Rio, M Garcia Diez, E Piccinni, D Kiritsi, J Kohlhase, P Itin, L Martin…
Human mutation, 2011Wiley Online Library
Mutations in the FERMT1 gene (also known as KIND1), encoding the focal adhesion protein
kindlin‐1, underlie the Kindler syndrome (KS), an autosomal recessive skin disorder with an
intriguing progressive phenotype comprising skin blistering, photosensitivity, progressive
poikiloderma with extensive skin atrophy, and propensity to skin cancer. Herein we review
the clinical and genetic data of 62 patients, and delineate the natural history of the disorder,
for example, age at onset of symptoms, or risk of malignancy. Although most mutations are …
Abstract
Mutations in the FERMT1 gene (also known as KIND1), encoding the focal adhesion protein kindlin‐1, underlie the Kindler syndrome (KS), an autosomal recessive skin disorder with an intriguing progressive phenotype comprising skin blistering, photosensitivity, progressive poikiloderma with extensive skin atrophy, and propensity to skin cancer. Herein we review the clinical and genetic data of 62 patients, and delineate the natural history of the disorder, for example, age at onset of symptoms, or risk of malignancy. Although most mutations are predicted to lead to premature termination of translation, and to loss of kindlin‐1 function, significant clinical variability is observed among patients. There is an association of FERMT1 missense and in‐frame deletion mutations with milder disease phenotypes, and later onset of complications. Nevertheless, the clinical variability is not fully explained by genotype–phenotype correlations. Environmental factors and yet unidentified modifiers may play a role. Better understanding of the molecular pathogenesis of KS should enable the development of prevention strategies for disease complications. Hum Mutat 32:1204–1212, 2011. ©2011 Wiley Periodicals, Inc.
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