Staphylococcal protein A activates proinflammatory pathways via tumour necrosis factor receptor 1 on keratinocytes.122Staphylococcus aureus lipoteichoic acid and lipoproteins activate Toll‐like receptors 2 and 6 to exacerbate AD and stimulate release of thymic stromal lymphopoietin (TSLP) from keratinocytes. The gene discussed is TSLP; the disease is Alzheimer disease.