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This article examines the role of CD147, a protein found on certain immune cells, in the development and recurrence of psoriasis. The study discovered that high levels of CD147 on CD4+ T cells were associated with the effectiveness of IL-17A inhibitor treatment and the likelihood of psoriasis returning. The researchers developed two models that accurately predicted treatment outcomes and long-term effectiveness based on CD147 levels. Additionally, the study found that a lack of CD147 on CD4+ T cells worsened psoriasis and increased the chances of it coming back. These findings provide valuable insights into the causes of psoriasis and could inform personalized treatment approaches. [Extracted from the article]