Tofacitinib: A Treatment Option for Recalcitrant Polymorphic Light Eruption and Its Mechanistic Rationale.
Kabir SardanaSinu Rose MathachanAnanta KhuranaPublished in: Dermatitis : contact, atopic, occupational, drug (2024)
Background: Polymorphous light eruption is largely characterized by a delayed-type (type IV) hypersensitivity reaction to 1 or more undefined endogenous ultraviolet-induced skin antigens. Objectives: To evaluate the efficacy of tofacitinib in refractory cases of polymorphous light eruption. Methods: Seven patients who had failed multiple systemic treatments or relapsed within 2 weeks of existing systemic agents with concomitant photoprotection were offered tofacitinib after written consent. Results: Initiation of tofacitinib led to a marked reduction of itching (mean ± SD 3.1 ± 1.12 days) followed by clinical resolution (mean ± SD 2.6 ± 1.1 weeks). The duration of therapy ranged from 1 to 3 months (mean ± SD 2 ± 0.63 months), and 4 of 7 patients had a recurrence in 5.5 weeks and were again initiated on tofacitinib with a prompt response. Conclusion: Tofacitinib inhibits Janus kinase (JAK)1 and JAK3 thus it can abrogate the effects of the predominant cytokine milieu of polymorphic light eruption (PMLE) and thus reduce the expression of aberrant inflammatory T lymphocyte expression in PMLE.
Keyphrases
- rheumatoid arthritis
- ulcerative colitis
- poor prognosis
- end stage renal disease
- drug induced
- chronic kidney disease
- gestational age
- clinical trial
- newly diagnosed
- acute myeloid leukemia
- oxidative stress
- prognostic factors
- acute lymphoblastic leukemia
- stem cells
- long non coding rna
- hodgkin lymphoma
- binding protein
- mesenchymal stem cells
- high glucose
- cell therapy
- replacement therapy
- protein kinase
- light emitting