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Tofacitinib for the Treatment of Ulcerative Colitis: Analysis of Nonmelanoma Skin Cancer Rates From the Ulcerative
Bruce E Sands1, Millie D Long2, Walter Reinisch3
1Icahn School of Medicine at Mount Sinai, New York, New York, USA.
Background:
Tofacitinib is an oral, small molecule Janus kinase inhibitor for the treatment of ulcerative colitis (UC). We present integrated analyses of nonmelanoma skin cancer (NMSC) incidence in the tofacitinib UC clinical program.
Methods:
Nonmelanoma skin cancer events were evaluated from 3 randomized, placebo-controlled studies: 2 identical, 8-week induction studies (NCT01465763, NCT01458951), a 52-week maintenance study (NCT01458574), and an open-label, long-term extension study (NCT01470612). Cohorts analyzed were: Induction, Maintenance, and Overall (patients receiving ≥1 dose of tofacitinib 5 mg or 10 mg twice daily [BID]). An independent adjudication committee reviewed potential NMSC. Proportions and incidence rates (IRs; unique patients with events per 100 patient-years of exposure) for NMSC were evaluated. A Cox proportional hazards model was used for risk factor analysis.
Results:
Nonmelanoma skin cancer was evaluated for 1124 patients (2576.4 patient-years of tofacitinib exposure; ≤6.8 years' treatment). In the Induction Cohort, NMSC IR was 0.00 for placebo and 1.26 for 10 mg BID. Nonmelanoma skin cancer IR was 0.97 for placebo, 0.00 for 5 mg BID and 1.91 for 10 mg BID in the Maintenance Cohort, and 0.73 (n = 19) in the Overall Cohort. No NMSC was metastatic or led to discontinuation. In the Overall Cohort, Cox regression identified prior NMSC (hazard ratio [HR], 9.09; P = 0.0001), tumor necrosis factor inhibitor (TNFi) failure (3.32; P = 0.0363), and age (HR per 10-year increase, 2.03; P = 0.0004) as significant independent NMSC risk factors.
Conclusions:
For patients receiving tofacitinib, NMSC occurred infrequently. Older age, prior NMSC, and TNFi failure, which are previously reported NMSC risk factors in patients with UC, were associated with increased NMSC risk.
Insights
Tofacitinib treatment for ulcerative colitis showed infrequent nonmelanoma skin cancer (NMSC) events. Prior NMSC, older age, and TNFi failure were identified as key risk factors for NMSC in patients with UC.
Area of Science:
- Immunology
- Dermatology
- Gastroenterology
Background:
- Tofacitinib is an oral Janus kinase inhibitor used to treat ulcerative colitis (UC).
- Integrated analyses of nonmelanoma skin cancer (NMSC) incidence within the tofacitinib UC clinical program were conducted.
- Understanding NMSC risk is crucial for patients with UC treated with immunomodulatory therapies.
Purpose of the Study:
- To evaluate the incidence of nonmelanoma skin cancer (NMSC) in patients with ulcerative colitis (UC) treated with tofacitinib.
- To identify risk factors associated with NMSC development in this patient population.
- To provide integrated safety data on NMSC from a comprehensive clinical program.
Main Methods:
- Analysis of data from 3 randomized, placebo-controlled studies and an open-label extension study.
- Evaluation of NMSC events by an independent adjudication committee.
- Utilized Cox proportional hazards modeling to identify significant risk factors for NMSC.
Main Results:
- Nonmelanoma skin cancer (NMSC) occurred infrequently across all treatment groups.
- Incidence rates (IRs) for NMSC varied by cohort and dosage, with higher rates observed in the 10 mg BID tofacitinib group compared to placebo in the Maintenance Cohort.
- Prior NMSC, tumor necrosis factor inhibitor (TNFi) failure, and older age were identified as significant independent risk factors for NMSC.
Conclusions:
- Nonmelanoma skin cancer (NMSC) events were infrequent in patients receiving tofacitinib for ulcerative colitis (UC).
- Established risk factors including older age, previous NMSC, and TNFi failure were associated with an increased risk of NMSC.
- These findings reinforce the importance of monitoring for NMSC in UC patients, particularly those with identified risk factors.
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