Comparison With Dupilumab in Another Trial
Delgocitinib is no longer just an investigational medication, April W. Armstrong, MD, MPH, professor and chief of dermatology, University of California, Los Angeles, said during a separate late-breaking presentation at the EADV 2024 meeting. “I think it’s big news because now we have an important topical option for our patients with chronic hand eczema.”
Armstrong presented a matched-adjusted indirect comparison (MAIC) of delgocitinib vs dupilumab for the treatment of moderate to severe atopic hand eczema, which she described as “the next best thing” to a head-to-head trial.
MAICs are where patient level data from one or more clinical trials evaluating drug “A” are compared with aggregate data from one or more clinical trials evaluating drug “B.” In this case, individual patient data from the DELTA 1 and DELTA 2 trials of delgocitinib were compared with published aggregate data from the phase 3 LIBERTY-AD-HAFT trial of dupilumab.
A total of 201 patients with atopic hand eczema in the DELTA 1 and DELTA 2 trials were matched to 133 patients in the LIBERTY-AD-HAFT trial. Of these, 128 had been treated with delgocitinib cream, 73 with a cream vehicle, 67 with subcutaneous dupilumab, and 66 with a subcutaneous placebo.
“We’re trying to compare as much as possible apples to apples here in terms of the etiology of hand eczema,” Armstrong said. She noted that after matching and weighting based on age, sex, race, and baseline HECSI score, baseline characteristics in the two groups of patients were similar. The mean age was about 35.8 years in the two active treatment arms and 33.4 years in the two placebo arms, and mean baseline HESCI scores were about 79-80.
The endpoints compared were ≥ 75% improvement in HECSI; HECSI-90, HECSI percentage improvement, and IGA-CHE in the DELTA 1 and DELTA 2 trials; or a Hand and Foot IGA score of 0/1.
“The key message to take away from this is that there were no statistically significant differences between topical delgocitinib twice daily vs subcutaneous injection of dupilumab by week 16 in the treatment of patients with atopic hand dermatitis,” Armstrong reported. Odds ratios varied between 1.1 and 1.3 for the various endpoints.
Menno de Rie, MD, PhD, professor of dermatology and immunology at Amsterdam University Medical Center in the Netherlands, who cochaired the session, said that “I appreciate very much that you took the effort to compare these totally different compounds and showed us the methodology that you did. It’s really very impressive.”
Topical, Systemic, or Both?
Armstrong was questioned on how to manage someone with atopic hand dermatitis who developed lesions elsewhere on the body.
“I would take a really individualized approach to this patient,” she responded. If the eczema has been limited to the hands and has been there for a while, then perhaps delgocitinib would be her choice, but if they developed lesions elsewhere on the body, then a systemic treatment such as dupilumab may be preferable.
“The good thing is that this study shows that you can offer the patient either of those options and really engage the patient in a shared decision-making process.”
And with regards to whether the two might possibly be used together, Armstrong acknowledged insurance coverage restrictions could be a limiting factor in the United States, but elsewhere — and from a scientific point of view — this could make sense.
“If we have a patient, for example, who has moderate to severe atopic dermatitis involving the body, but also very severe hand eczema as well, one may possibly consider a combination of a systemic medication that’s helpful for the extensive area of involvement on the body ... and now you have a topical therapy, delgocitinib, where you can use it locally, have very deep efficacy locally, to kind of help augment that disease phenotype in that patient population.”
The studies were funded by Leo Pharma. Chovatiya, Giménez-Arnau, and Armstrong acknowledged ties to LEO Pharma, among other pharmaceutical companies.
A version of this article first appeared on Medscape.com.