Treatment of primary cutaneous lichenoid amyloidosis with abrocitinib: A pilot study in two cases

Abrocitinib as a Novel Treatment for Multiple Skin Disorders: 3 Case Reports and a Scoping Review

Janus kinase (JAK) inhibitors are increasingly being used in dermatology due to their broad potential in managing both local and systemic inflammation. More recently, abrocitinib, an oral JAK 1 inhibitor, has shown promising clinical efficacy in the treatment of various skin disorders beyond moderate to severe atopic dermatitis (AD). We firstly presented three cases, each with diagnosis of pyoderma gangrenosum (PG), livedoid vasculopathy (LV), or hidradenitis suppurativa (HS), and conducted a comprehensive scoping review of the available literature on the use of abrocitinib in the treatment of diverse skin disorders. We summarized a total of 16 skin disorders, including our cases. The results indicated that abrocitinib, whether used as monotherapy or in combination with other treatments, was effective and well-tolerated in these disorders. These findings expanded the range of diseases for which abrocitinib may serve as an alternative therapeutic choice.

A Case of Perioral Dermatitis Successfully Treated with Abrocitinib

Perioral dermatitis (POD) is a chronic inflammatory skin disease that primarily affects females between the ages of 16 and 45. Conventional therapies face the challenge of limited efficacy and a high recurrence rate. In this report, we present the case of a 26-year-old male patient with POD who was successfully treated using the Janus kinase (JAK) inhibitor, abrocitinib. This treatment exhibited both good efficacy and safety. Abrocitinib, as a JAK inhibitor, holds promise as a potential therapy for cases of POD that might be resistant to conventional therapies.

A Report of Eruptive Pruritic Papular Porokeratosis Treated with Abrocitinib

Eruptive pruritic papular porokeratosis (EPPP) is a subtype of porokeratosis (PK). EPPP is characterized by intense itching and challenging to treat in some cases. Herein, for the first time, a case of successful relief of EPPP treated with abrocitinib was reported. A 75-year-old male with a 60-year history of PK suddenly experienced severe itching in the past 6 months. The patient's use of antihistamines, prednisone, vitamin A derivatives, vitamin D derivatives, and tripterygium wilfordii showed poor efficacy. Abrocitinib is a highly selective JAK1 inhibitor, and JAK1 appears to play a crucial role in pruritic diseases. Abrocitinib can quickly relieve itching within 24 hours. Before abrocitinib treatment, the visual analog scale (VAS) score was 10, the 12-item pruritus severity scale (12-PSS) score was 19, and the dermatology life quality index (DLQI) score was 18. Abrocitinib (100 mg) was taken orally once a day. After 1 month of oral administration of abrocitinib, the skin lesions gradually subsided, pruritus was relieved, and no adverse side effects occurred. The VAS, 12-PSS, and DLQI scores of the patient decreased to 2, 3, and 4, respectively. This report suggests a potential therapeutic benefit of abrocitinib in managing EPPP. However further investigations with larger sample sizes and controlled studies are necessary to validate its efficacy as a clinical therapy.