Secukinumab in Pediatric Patients with Plaque Psoriasis: Pooled Safety Analysis from Two Phase 3 Randomized Clinical Trials.

BACKGROUND: Plaque psoriasis affects ~ 1% of the pediatric population, negatively impacting quality of life. The efficacy and safety of secukinumab in pediatric patients with moderate to severe or severe chronic plaque psoriasis have been established in two pivotal phase 3 trials (open-label, NCT03668613; double-blind, NCT02471144). OBJECTIVES: The aims were to report the pooled safety of secukinumab up to 52 weeks from two studies in subgroups of pediatric patients stratified by age and bodyweight, and to present, alongside the pediatric data, the pooled safety data from four pivotal adult secukinumab trials. METHODS: The safety of secukinumab was evaluated in subgroups of pediatric patients defined by age (6 to < 12 and 12 to < 18 years) and bodyweight (< 25 kg, 25 to < 50 kg, and ≥ 50 kg) in the pooled population. Patients received secukinumab low dose (LD; 75/75/150 mg), secukinumab high dose (HD; 75/150/300 mg), placebo, or etanercept (0.8 mg/kg). For safety analyses, data were pooled from the pediatric studies NCT03668613 and NCT02471144, and presented alongside the pooled data from four adult pivotal studies (NCT01365455, NCT01636687, NCT01358578, NCT01555125). RESULTS: A total of 198 pediatric patients (overall exposure: 184.6 patient-years [PY]) and 1989 adult patients (1749.5 PY) receiving secukinumab up to week 52 were included in this analysis. At week 52, the incidence of adverse events (AEs) was lower in the lower age and bodyweight subgroups. The AEs reported within these subgroups were consistent with the overall AEs reported in this analysis. Overall, exposure-adjusted incidence rates for treatment-emergent AEs were lower in the secukinumab-treated pediatric pool (198.8/100 PY) compared with the etanercept (266.3/100 PY) and adult pools (256.1/100 PY). Up to 52 weeks, the incidence rates of the AEs in the secukinumab-treated patients in the 6 to < 12 years subgroup and 12 to < 18 years subgroup were 167.7/100 PY and 214.7/100 PY, respectively. Similarly, incidence rates of the AEs in the secukinumab-treated patients in the < 25 kg, 25 kg to < 50 kg, and ≥ 50 kg subgroups were 177.3/100 PY, 192.5/100 PY, and 206.8/100 PY, respectively. Nasopharyngitis was the most frequently reported AE in secukinumab-treated pediatric patients across age (< 12 years: 11.8/100 PY; ≥ 12 years: 42.4/100 PY) and bodyweight (< 25 kg: 22.8/100 PY; 25 kg to < 50 kg: 19.0/100 PY; ≥ 50 kg: 43.0/100 PY). Of the 198 secukinumab-treated pediatric patients, one reported nail Candida, one reported skin Candida, and two reported vulvovaginal Candida. Transient and mostly mild events of neutropenia were observed with secukinumab, none leading to study treatment discontinuation. No incidence of treatment-emergent anti-drug antibodies was reported in pediatric patients treated with secukinumab. CONCLUSIONS: Secukinumab was well tolerated in pediatric patients with moderate to severe and severe plaque psoriasis across age and bodyweight subgroups. The overall safety profile of secukinumab in pediatric patients was consistent with that of adult patients. GOV IDENTIFIER: NCT03668613 (Novartis Study Code CAIN457A2311, referred to as A2311), actual study start date: August 29, 2018; actual primary completion date: September 19, 2019; estimated study completion date: September 14, 2023. NCT02471144 (Novartis Study Code CAIN457A2310, referred to as A2310), study start date: September 29, 2015; primary completion date: December 13, 2018; estimated study completion date: March 31, 2023.

Long-term data on the proposed adalimumab biosimilar BCD-057 in patients with moderate to severe psoriasis: A randomized controlled trial.

INTRODUCTION: The objective of this study was to demonstrate that BCD-057 is similar to innovator adalimumab (iADA) in terms of efficacy, safety, and pharmacokinetics in steady state in the target population of patients with moderate to severe plaque psoriasis (NCT02762955). METHODS: Patients were randomized in 1:1 ratio to receive 80 mg of BCD-057 or iADA at week 0 and 40 mg thereafter every other week from week 1. At week 24 patients from iADA group were re-randomized (1:1) to continue iADA or to be switched to BCD-057. The primary efficacy endpoint was 75% improvement in Psoriasis Area and Severity Index from baseline (PASI 75), secondary endpoints included PASI percent improvement and relative change in affected Body Surface Area (BSA) from baseline at weeks 16, 24, 33, and 55. Safety was assessed through monitoring of adverse events (AEs) and antidrug antibodies. Pharmacokinetics was evaluated at steady state. RESULTS: Overall, 346 adult patients were included in the study (174/172 patients in BCD-057/iADA arms, respectively). At week 16 PASI 75 was achieved by 60.34% and 63.37% of patients in BCD-057 and iADA arms, respectively (p = 0.5622). Bounds of the calculated 95% confidence interval (CI) for the difference between PASI 75 responses in arms [-13.26%; 7.2%] fall within the equivalence margin [-15% to 15%] demonstrating equivalent efficacy of BCD-057 and iADA. At week 55 81.61%, 85.56%, and 80.49% of patients in BCD-057, iADA and iADA/BCD-057 arms achieved PASI 75. Comparison of the secondary endpoints did not show significant differences between arms. A comparable pharmacokinetics was shown at steady state. Safety profiles and proportions of patients with antidrug antibodies were similar between arms. The switch from the iADA to BCD-057 did not affect the immunogenicity profile. CONCLUSION: Obtained data demonstrate that BCD-057 and iADA are highly similar in clinical efficacy, pharmacokinetics, safety, and immunogenicity in patients with moderate to severe plaque psoriasis.