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Br J Haematol ; 204(3): 1086-1095, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-37926112

RESUMO

By whole exome sequencing, we identified a homozygous c.2086 C→T (p.R696C) TERT mutation in patients who present with a spectrum of variable bone marrow failure (BMF), raccoon eyes, dystrophic nails, rib anomalies, fragility fractures (FFs), high IgE level, extremely short telomere lengths (TLs), and skewed numbers of cytotoxic T cells with B and NK cytopenia. Haploinsufficiency in the other family members resulted in short TL and osteopenia. These patients also had the lowest bone mineral density Z-score compared to other BMF-patients. Danazol/zoledronic acid improved the outcomes of BMF and FFs. This causative TERT variant has been observed in one family afflicted with dyskeratosis congenita (DC), and thus, we also define a second report and new phenotype related to the variant which should be suspected in severe cases of DC with co-existent BMF, FFs, high IgE level and rib anomalies.


Assuntos
Disceratose Congênita , Pancitopenia , Fraturas das Costelas , Telomerase , Humanos , Telômero , Mutação , Disceratose Congênita/genética , Imunoglobulina E/genética , Telomerase/genética
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