PMID- 16446975 OWN - NLM STAT- MEDLINE DCOM- 20070201 LR - 20181113 IS - 0340-6717 (Print) IS - 0340-6717 (Linking) VI - 119 IP - 3 DP - 2006 Apr TI - Genetic alterations in caspase-10 may be causative or protective in autoimmune lymphoproliferative syndrome. PG - 284-94 AB - Autoimmune lymphoproliferative syndrome (ALPS) is characterized by lymphadenopathy, elevated numbers of T cells with alphabeta-T cell receptors but neither CD4 nor CD8 co-receptors, and impaired lymphocyte apoptosis in vitro. Defects in the Fas receptor are the most common cause of ALPS (ALPS Ia), but in rare cases other apoptosis proteins have been implicated, including caspase-10 (ALPS II). We investigated the role of variants of caspase-10 in ALPS. Of 32 unrelated probands with ALPS who did not have Fas defects, two were heterozygous for the caspase-10 missense mutation I406L. Like the previously reported ALPS II-associated mutation L285F, I406L impaired apoptosis when transfected alone and dominantly inhibited apoptosis mediated by wild type caspase-10 in a co-transfection assay. Other variants in caspase-10, V410I and Y446C, were found in 3.4 and 1.6% of chromosomes in Caucasians, and in 0.5 and <0.5% of African Americans, respectively. In contrast to L285F and I406L, these variants had no dominant negative effect in co-transfection assays into the H9 lymphocytic cell line. We found healthy individuals homozygous for V410I, challenging the earlier suggestion that homozygosity for V410I alone causes ALPS. Moreover, an association analysis suggested protection from severe disease by caspase-10 V410I in 63 families with ALPS Ia due to dominant Fas mutations (P<0.05). Thus, different genetic variations in caspase-10 can produce contrasting phenotypic effects. FAU - Zhu, Shigui AU - Zhu S AD - Genetics and Molecular Biology Branch, National Human Genome Research Institute, NIH, DHHS, Bethesda, MD 20892, USA. FAU - Hsu, Amy P AU - Hsu AP FAU - Vacek, Marla M AU - Vacek MM FAU - Zheng, Lixin AU - Zheng L FAU - Schaffer, Alejandro A AU - Schaffer AA FAU - Dale, Janet K AU - Dale JK FAU - Davis, Joie AU - Davis J FAU - Fischer, Roxanne E AU - Fischer RE FAU - Straus, Stephen E AU - Straus SE FAU - Boruchov, Donna AU - Boruchov D FAU - Saulsbury, Frank T AU - Saulsbury FT FAU - Lenardo, Michael J AU - Lenardo MJ FAU - Puck, Jennifer M AU - Puck JM LA - eng GR - Intramural NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Intramural DEP - 20060131 PL - Germany TA - Hum Genet JT - Human genetics JID - 7613873 RN - EC 3.4.22.- (Caspase 10) RN - EC 3.4.22.63 (CASP10 protein, human) SB - IM MH - Autoimmune Diseases/*etiology MH - Caspase 10/*genetics/metabolism MH - Cells, Cultured MH - Child MH - Child, Preschool MH - Family MH - Female MH - Genetic Testing MH - Genetic Variation MH - Humans MH - Infant MH - Jurkat Cells MH - Lymphoproliferative Disorders/*etiology MH - Male MH - Phenotype MH - Syndrome MH - Transfection EDAT- 2006/02/01 09:00 MHDA- 2007/02/03 09:00 CRDT- 2006/02/01 09:00 PHST- 2005/10/02 00:00 [received] PHST- 2006/01/04 00:00 [accepted] PHST- 2006/02/01 09:00 [pubmed] PHST- 2007/02/03 09:00 [medline] PHST- 2006/02/01 09:00 [entrez] AID - 10.1007/s00439-006-0138-9 [doi] PST - ppublish SO - Hum Genet. 2006 Apr;119(3):284-94. doi: 10.1007/s00439-006-0138-9. Epub 2006 Jan 31.