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Pulmonary Cryptococcosis in the Setting of Tofacitinib Therapy for Psoriasis

Lucia Seminario-Vidal, Wendy Cantrell, Boni E Elewski

    Journal of Drugs in Dermatology : JDD
    |August 13, 2015
    PubMed

    Insights

    Tofacitinib, used for inflammatory conditions, may increase the risk of pulmonary cryptococcosis in immunocompetent patients. Early recognition of this fungal infection is crucial to prevent severe outcomes.

    Area of Science:

    • Immunology
    • Infectious Diseases
    • Dermatology

    Background:

    • Tofacitinib is a Janus kinase (JAK) inhibitor targeting the JAK-STAT pathway.
    • It is approved for psoriatic arthritis and being investigated for psoriasis and other inflammatory conditions.
    • JAK inhibitors modulate immune responses, potentially affecting susceptibility to infections.

    Observation:

    • A case of pulmonary cryptococcosis occurred in an immunocompetent patient treated with tofacitinib for psoriasis.
    • The patient presented with a fungal infection despite no apparent underlying immune deficiency.

    Findings:

    • Tofacitinib may predispose patients to opportunistic infections like cryptococcosis.
    • The drug's mechanism, inhibiting cytokines essential for T-cell differentiation and macrophage activation, is hypothesized to contribute.
    • This suggests a potential link between JAK-STAT pathway inhibition and impaired fungal defense.

    Implications:

    • Dermatologists prescribing tofacitinib should be aware of the risk of cryptococcal infections.
    • Prompt diagnosis and management of pulmonary cryptococcosis are vital in patients on tofacitinib.
    • Delayed diagnosis can lead to severe, life-threatening complications.

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