Autoimmune lymphoproliferative syndrome | |
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Other names | Canale-Smith syndrome,[1] |
Specialty | Immunology |
Autoimmune lymphoproliferative syndrome (ALPS) is a form of lymphoproliferative disorder (LPDs). It affects lymphocyte apoptosis.[2]
It is a rare genetic disorder of abnormal lymphocyte survival caused by defective Fas mediated apoptosis.[3] Normally, after infectious insult, the immune system down-regulates by increasing Fas expression on activated B and T lymphocytes and Fas-ligand on activated T lymphocytes. Fas and Fas-ligand interact to trigger the caspase cascade, leading to cell apoptosis. Patients with ALPS have a defect in this apoptotic pathway, leading to chronic non-malignant lymphoproliferation, autoimmune disease, and secondary cancers.[4]
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