The FDA has approved the injectable interleukin (IL)-17A/17F antagonist bimekizumab-bkzx (Bimzelx – UCB) for treatment of moderate to severe plaque psoriasis in adults who are candidates for systemic treatment or phototherapy. Bimekizumab is the first IL-17A/17F antagonist to be approved in the US. It was approved in the European Union for the same indication in 2021.

Psoriatic arthritis is a chronic inflammatory arthropathy associated with psoriasis. A recent review found that about 20% of patients with psoriasis have psoriatic arthritis. Updated guidelines for treatment of psoriatic arthritis have recently been published.

Mild to moderate psoriasis can be treated with topical drugs or with phototherapy. Patients with moderate to severe disease generally require systemic therapy.

View the Expanded Table: Some Drugs for Psoriasis

The FDA has approved the interleukin (IL)-23 antagonist risankizumab-rzaa (Skyrizi – Abbvie) for treatment of moderate to severe plaque psoriasis in adults. Risankizumab is the third IL-23 antagonist to be approved for this indication; guselkumab (Tremfya) and tildrakizumab (Ilumya) were approved earlier.

Tildrakizumab-asmn (Ilumya – Sun), an interleukin (IL)-23 antagonist, has been approved by the FDA for treatment of adults with moderate to severe plaque psoriasis who are candidates for systemic therapy or phototherapy. Tildrakizumab is the second selective IL-23 antagonist to be approved for this indication; guselkumab (Tremfya) was the first.

The FDA has approved the interleukin (IL)-23 blocker guselkumab (Tremfya – Janssen) for treatment of moderate to severe plaque psoriasis in adults who are candidates for systemic therapy or phototherapy. Guselkumab is the first selective IL-23 blocker to become available in the US.

The FDA has approved brodalumab (Siliq – Valeant), an injectable human interleukin (IL)-17A receptor antagonist, for treatment of adults with moderate to severe plaque psoriasis who have failed to respond to other systemic therapies. Brodalumab is the third IL-17A antagonist to be approved in the US for this indication; secukinumab (Cosentyx) and ixekizumab (Taltz) were approved earlier.

The FDA has approved the subcutaneous IL-17A antagonist secukinumab (Cosentyx - Novartis), which was first approved in 2015 for treatment of plaque psoriasis, for treatment of psoriatic arthritis and ankylosing spondylitis in adults.1 Secukinumab is one of the most effective drugs available for treatment of plaque psoriasis.2

FDA approval of secukinumab for treatment of psoriatic arthritis was based on two randomized, double-blind trials with a primary endpoint of at least a 20% improvement in the American College of Rheumatology response criteria (ACR20) at 24 weeks. In both trials, ACR20 response rates were significantly higher in patients receiving secukinumab than in those receiving placebo.3,4 Secukinumab was effective in both TNF inhibitor-naive and TNF inhibitor-experienced patients.

Approval of secukinumab for ankylosing spondylitis was based on two double-blind trials in which the primary endpoint was the percentage of patients who achieved at least a 20% improvement in Assessment of Spondyloarthritis International Society response criteria (ASA20) at 16 weeks. In both trials, ASA20 response rates were significantly higher in patients receiving secukinumab than in those receiving placebo.5

The most common adverse effects of secukinumab in clinical trials were nasopharyngitis, diarrhea, and upper respiratory infection. In general, infections occurred at a higher rate in secukinumab-treated patients than in those who received placebo. Patients should be screened for tuberculosis before starting therapy. Exacerbations of Crohn's disease were reported during clinical trials in patients taking secukinumab. Urticaria and anaphylaxis have occurred.

The recommended dosage of secukinumab for patients with psoriatic arthritis (without concomitant moderate to severe plaque psoriasis) or ankylosing spondylitis is 150 mg injected subcutaneously at weeks 0, 1, 2, 3, and 4, then every 4 weeks. The drug can also be given every 4 weeks without the weekly loading doses. The dose can be increased to 300 mg in patients who continue to have active psoriatic arthritis. The cost for one 150 mg/mL single-use pen is $1954.10.6

1. Secukinumab (Cosentyx) for psoriasis. Med Lett Drugs Ther 2015; 57:45.
2. Drugs for psoriasis. Med Lett Drugs Ther 2015; 57:81.
3. IB McInnes et al. Secukinumab, a human anti-interleukin-17A monoclonal antibody, in patients with psoriatic arthritis (FUTURE-2): a randomised, double-blind, placebo-controlled, phase 3 trial. Lancet 2015; 386:1137.
4. PJ Mease et al. Secukinumab inhibition of interleukin-17A in patients with psoriatic arthritis. N Engl J Med 2015; 373:1329.
5. D Baeten et al. Secukinumab, an interleukin-17A inhibitor, in ankylosing spondylitis. N Engl J Med 2015; 373:2534.
6. Approximate WAC. WAC = wholesaler acquisition cost or manufacturer's published price to wholesalers; WAC represents a published catalogue or list price and may not represent an actual transactional price. Source: AnalySource® Monthly. May 5, 2016. Reprinted with permission by First Databank, Inc. All rights reserved. ©2016. www.fdbhealth.com/policies/drug-pricing-policy.

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The FDA has approved ixekizumab (Taltz – Lilly), an injectable humanized interleukin (IL)-17A antagonist, for treatment of adults with moderate to severe plaque psoriasis who are candidates for systemic therapy or phototherapy. Ixekizumab is the second IL-17A antagonist to be approved for this indication in the US; secukinumab (Cosentyx – Novartis) was the first.

Mild to moderate psoriasis is generally treated with topical corticosteroids. Vitamin D analogs and tazarotene are topical alternatives that can be used in combination with topical corticosteroids. Phototherapy and systemic therapy, including biologic agents, are recommended for patients with moderate to severe disease.

Psoriatic arthritis is a chronic inflammatory arthropathy that develops in up to 40% of patients with psoriasis. Several guidelines for treatment of psoriatic arthritis have been published.

Secukinumab (Cosentyx – Novartis), an injectable human interleukin (IL)-17A antagonist, has been approved by the FDA for treatment of moderate to severe plaque psoriasis in adult patients who are candidates for systemic therapy or phototherapy. It is the first IL-17 inhibitor to be approved for any indication in the US.