| Autor: |
van der BURG, MIRJAM, de GROOT, RONALD, COMANS-BITTER, W. MARIEKE, HOLLANDER, JAN C. den, HOOIJKAAS, HERBERT, NEIJENS, HERMAN J., BERGER, ROLF M. F., ORANJE, ARNOLD P., LANGERAK, ANTON W., DONGEN, JACQUES J. M. van |
| Zdroj: |
Pediatric Research (Ovid); March 2000, Vol. 47 Issue: 3 p336-343, 8p |
| Abstrakt: |
Autoimmune lymphoproliferative syndrome (ALPS) is characterized by autoimmune features and lymphoproliferations and is generally caused by defective Fas-mediated apoptosis. This report describes a child with clinical features of ALPS without detectable Fas expression on freshly isolated blood leukocytes. Detection of FAStranscripts via real-time quantitative PCR made a severe transcriptional defect unlikely. Sequencing of the FASgene revealed a 20-nucleotide duplication in the last exon affecting the cytoplasmic signaling domain. The patient was homozygous for this mutation, whereas the consanguineous parents and the siblings were heterozygous. The patient reported here is a human homologue of the Fas-null mouse, inasmuch as she carries an autosomal homozygous mutation in the FASgene and she shows the severe and accelerated ALPS phenotype. The heterozygous family members did not have the ALPS phenotype, indicating that the disease-causing FASmutation in this family is autosomal recessive. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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