A FAS-ligand variant associated with autoimmune lymphoproliferative syndrome in cats

Danielle Aberdein, John S. Munday, Barbara Gandolfi, Keren E. Dittmer, Richard Malik, Dorian J. Garrick, Leslie A. Lyons, Lives Consortium 99 Lives Consortium, Pauol C. Alves, Gregory S. Barsh, Holly C. Beale, Adam R. Boyko, Marta G. Castelhano, Patricia Chan, N. Matthew Ellinwood, Christopher R. Helps, Christopher B. Kaelin, Tosso Leeb, Hannes Lohi, Maria LongeriMichael J. Montague, William J. Murphy, Niels C. Pedersen, Max F. Rothschild, William F. Swanson, Karen A. Terio, Rory J. Todhunter, Wesley C. Warren

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

British shorthair (BSH) kittens in multiple litters died as a result of a severe non-neoplastic lymphoproliferative disease that showed many similarities with human autoimmune lymphoproliferative syndrome (ALPS). Human ALPS is caused by inherited defects in FAS-mediated lymphocyte apoptosis and the possibility of similar defects was investigated in BSH cats. The whole genomes of two affected kittens were sequenced and compared to 82 existing cat genomes. Both BSH kittens had homozygous insertions of an adenine within exon 3 of the FAS-ligand gene. The resultant frameshift and premature stop codon were predicted to result in a severely truncated protein that is unlikely to be able to activate FAS. Three additional affected BSH kittens were homozygous for the variant, while 11 of 16 unaffected, but closely related, BSH cats were heterozygous for the variant. All BSH cats in the study were from a population with significant inbreeding. The variant was not identified in a further survey of 510 non-BSH cats. Identification of a genetic defect in the FAS-mediated apoptosis pathway confirms that the lymphoproliferative disease in BSH cats fulfills the diagnostic criteria for ALPS in humans. These results will enable the development of a genetic test to detect BSH carrier animals.

Original languageEnglish (US)
Pages (from-to)47-55
Number of pages9
JournalMammalian Genome
Volume28
Issue number1-2
DOIs
StatePublished - Feb 1 2017

ASJC Scopus subject areas

  • Genetics

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    Aberdein, D., Munday, J. S., Gandolfi, B., Dittmer, K. E., Malik, R., Garrick, D. J., Lyons, L. A., 99 Lives Consortium, L. C., Alves, P. C., Barsh, G. S., Beale, H. C., Boyko, A. R., Castelhano, M. G., Chan, P., Ellinwood, N. M., Helps, C. R., Kaelin, C. B., Leeb, T., Lohi, H., ... Warren, W. C. (2017). A FAS-ligand variant associated with autoimmune lymphoproliferative syndrome in cats. Mammalian Genome, 28(1-2), 47-55. https://doi.org/10.1007/s00335-016-9668-1