Ruxolitinib Cream Shows Promise in Treating Lichen Planus

AMSTERDAM — Treatment with ruxolitinib cream, 1.5%, achieved rapid and marked reductions in the clinical signs and symptoms of cutaneous lichen planus, including itch and skin pain, both when given twice daily and as needed, according to data from a phase 2 trial.

The research, presented at the European Academy of Dermatology and Venereology (EADV) 2024 Congress, involved 64 patients older than 18 years. Ruxolitinib cream (Opzelura) is a topical formulation of a Janus kinase (JAK)1/JAK2 inhibitor, approved by the US Food and Drug Administration (FDA) for treating mild to moderate atopic dermatitis and for nonsegmental vitiligo in adults and children aged 12 years or older.

Ruxolitinib cream twice daily resulted in “significant improvements in cutaneous lichen planus disease severity vs vehicle” after 16 weeks of treatment, said the study presenter, Aaron R. Mangold, MD, a dermatologist at Mayo Clinic, Scottsdale, Arizona.

Further improvements were seen during another 16 weeks of additional open-label, as-needed application, he added, and the topical treatment was “generally well tolerated.”

Consequently, “ruxolitinib cream represents a promising potential treatment for cutaneous lichen planus,” Mangold concluded.

Asked to comment on the results, Adam Friedman, MD, professor and chair of dermatology, The George Washington University, Washington, DC, who was not involved with the study, said that in keeping with the characterization of lichen planus using the four Ps — purple, polygonal, pruritic, papules — it is “Pretty common, Predictably disabling and disfiguring, and Passed over again and again in the drug development world.”

He told Medscape Medical News that this chronic inflammatory skin condition, which affects roughly 2% of the population, also “lacks consensus on work-up and management, likely in part owing to the absence of sizeable clinical trial data.”

A recent survey conducted at a meeting indicated that dermatologists “heavily lean on topical therapies for the management of all severity levels,” noted Friedman, one of the survey authors. “Therefore, the phase 2 data presented at EADV is a welcome addition to the mix.”

Phase 2 Study Results 

At the meeting, Mangold said that a previous proof-of-concept single-arm study in 12 patients suggested that topical ruxolitinib was highly effective in treating cutaneous lichen planus.

The current phase 2 trial enrolled 64 patients with predominantly cutaneous disease who had an Investigator’s Global Assessment (IGA) score of 3 or 4 and an Itch Numeric Rating Scale (NRS) score of ≥ 4. Their median age was 57 years, and 71.9% were women. Nearly 63% were White, 28.1% were Black, and 6.3% were Asian. The median duration of disease was 4.9 years, and 90.6% had received prior treatment for their lichen planus.

They were randomized to receive 1.5% ruxolitinib cream or vehicle cream twice daily for 16 weeks and following a primary endpoint assessment, were transferred to an open-label extension period, when they used ruxolitinib cream as needed for another 16 weeks. There was an additional 30-day safety follow-up period.

At week 16, significantly more patients treated with ruxolitinib cream (50.0%) vs vehicle cream (21.9%) achieved IGA treatment success (the primary endpoint), defined as an IGA score of 0 or 1 with ≥ 2-grade improvement from baseline (odds ratio, 4.04; P = .0129).

In the open-label extension, when all patients used the active cream as needed, the proportion achieving IGA treatment success increased to 60% among the patients originally treated with ruxolitinib cream and 60.9% among those who switched from the vehicle cream.

A similar pattern was seen with Itch NRS scores. At 16 weeks, 57.7% of those treated with ruxolitinib cream and 19.2% of those given the vehicle achieved an Itch NRS score of ≥ 4 (P

The time to achievement of an Itch NRS of ≥ 4 was also significantly shorter with ruxolitinib cream than with vehicle cream (median days, 17 vs 97; hazard ratio, 2.85; P = .0008).

In both treatment groups, skin pain NRS scores decreased by a mean of 3.0 with ruxolitinib cream and 1.3 with vehicle cream at week 16. By the end of the open-label extension, scores dropped by 4.3 among those who continued on active treatment and by 3.5 among those who switched from vehicle to topical ruxolitinib.

There were few treatment-emergent adverse events, with just three ruxolitinib patients affected during the randomized phase of the trial. There was one grade ≥ 3 event considered unrelated to the study drug, and no serious treatment-emergent adverse events were reported.

The most common adverse events during the randomized period were nasopharyngitis, hypertension, and contusion, all experienced by fewer than 10% of patients, whereas sinusitis, increased blood cholesterol levels, and increased blood creatine phosphokinase were most common in the open-label extension, experienced by no more than 5% of patients.

In the interview, Friedman commented that “these data provide hope that one day soon, there will be an FDA-approved, effective, and well-tolerated approach for this condition, validating the patient and supporting the dermatologist with an evidence-based option.”

The study was funded by Incyte Corporation. Mangold declared relationships with Argenx, Boehringer Ingelheim, Bristol Myers Squibb, Clarivate, Incyte Corporation, Janssen, Nuvig Therapeutics, Pfizer, Regeneron Pharmaceuticals, Soligenix, Tourmaline Bio, AbbVie, Corbus, Eli Lilly and Company, Kyowa, Merck, miRagen Therapeutics, Palvella Therapeutics, Priovant Therapeutics, and Adelphi Values. Friedman declared a relationship with Incyte, but it is not related to this topic.