Deuruxolitinib (Leqselvi)

What is deuruxolitinib?

Deuruxolitinib (Leqselvi) is an oral JAK inhibitor used for severe alopecia areata in adults. It is one of the newer targeted treatment options for patients with more extensive autoimmune hair loss.

For patients with large areas of scalp hair loss, eyebrow involvement, eyelash involvement, or repeated relapses, it may represent a more advanced treatment option than injections or topical therapy alone.

How does deuruxolitinib work?

Alopecia areata is driven by an immune attack on the hair follicle. Deuruxolitinib works by blocking JAK signaling involved in that immune process. By reducing that abnormal signaling, it may allow hair growth to recover over time in some patients.

As with other JAK inhibitors, the goal is not simply to stimulate hair mechanically, but to interrupt the immune process that is preventing normal hair growth.

What are possible side effects of deuruxolitinib?

Deuruxolitinib carries important warnings as part of the broader oral JAK inhibitor class. Possible risks and side effects can include:

  • Infections

  • Acne or headache

  • Cholesterol changes or other lab changes

  • Blood clots, cardiovascular risks, or other serious adverse effects in some patients

These risks do not mean the medication is never appropriate, but they do mean careful patient selection and pretreatment review are important.

How is deuruxolitinib used?

Deuruxolitinib is taken by mouth on a schedule directed by your provider. Before starting treatment, your dermatologist may review labs, health history, vaccination status, medication interactions, and pretreatment requirements such as CYP2C9 genotype testing.

This medication is usually considered when alopecia areata is more extensive or when simpler treatment approaches are unlikely to be enough. Ongoing follow-up may include lab monitoring and review of infection risk, clotting risk, and other JAK-related safety issues.

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