TWEAK signaling linked to eczema-like reactions in psoriasis patients on biologics
- Some psoriasis patients treated with biologics against TNF, IL-17 or IL-23 develop eczema-like lesions resembling atopic dermatitis; the molecular drivers were unclear.
- Single-cell and spatial transcriptomic maps of patient skin showed expanded myeloid and T cell populations and keratinocytes shaped by TWEAK acting through its receptor TNFRSF12A.
- In cultured keratinocytes, TWEAK combined with IL-13 induced a type 2 and interferon-skewed epithelial program that partly reproduced the lesional signature.
💡 Points Based on the abstract
Cultured keratinocytes plus recombinant cytokines show sufficiency at best, so I'd ask first whether TWEAK-high, TNFRSF12A-high skin predicts who flips to eczema before treatment. Then check drug exposure in skin, and whether blockade quiets the lesion without unmasking psoriasis again.