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- W2017870541 abstract "Hutchinson–Gilford Progeria Syndrome (HGPS) is a premature aging disorder caused by mutations in LMNA, which encodes the nuclear scaffold proteins lamin A and C. In HGPS and related progerias, processing of prelamin A is blocked at a critical step mediated by the zinc metalloprotease ZMPSTE24. LMNA-linked progerias can be grouped into two classes: (1) the processing-deficient, early onset “typical” progerias (e.g., HGPS), and (2) the processing-proficient “atypical” progeria syndromes (APS) that are later in onset. Here we describe a previously unrecognized progeria syndrome with prominent cutaneous and cardiovascular manifestations belonging to the second class. We suggest the name LMNA-associated cardiocutaneous progeria syndrome (LCPS) for this disorder. Affected patients are normal at birth but undergo progressive cutaneous changes in childhood and die in middle age of cardiovascular complications, including accelerated atherosclerosis, calcific valve disease, and cardiomyopathy. In addition, the proband demonstrated cancer susceptibility, a phenotype rarely described for LMNA-based progeria disorders. The LMNA mutation that caused LCPS in this family is a heterozygous c.899A>G (p.D300G) mutation predicted to alter the coiled–coil domain of lamin A/C. In skin fibroblasts isolated from the proband, the processing and levels of lamin A and C are normal. However, nuclear morphology is aberrant and rescued by treatment with farnesyltransferase inhibitors, as is also the case for HGPS and other laminopathies. Our findings advance knowledge of human LMNA progeria syndromes, and raise the possibility that typical and atypical progerias may converge upon a common mechanism to cause premature aging disease. © 2013 Wiley Periodicals, Inc." @default.
- W2017870541 created "2016-06-24" @default.
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- W2017870541 date "2013-05-10" @default.
- W2017870541 modified "2023-09-25" @default.
- W2017870541 title "<i>LMNA</i> ‐associated cardiocutaneous progeria: An inherited autosomal dominant premature aging syndrome with late onset" @default.
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- W2017870541 doi "https://doi.org/10.1002/ajmg.a.35971" @default.
- W2017870541 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3740161" @default.
- W2017870541 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/23666920" @default.