STUDY DESIGN1*

Graphic depicting the pharmacokinetics study design

Study Design1

  • Randomized, adaptive-design,
    double-blind, 3-arm, parallel-group,
    phase 1 study
  • Assessed the pharmacokinetics, safety,
    tolerability, and immunogenicity of a
    single dose of SIMLANDI
    compared with Humira in 260 healthy adults

KEY ENDPOINTS1

  • Primary pharmacokinetics parameters (Cmax, AUC0-t, and AUC0-inf) contained within the
    prespecified 80%-125% bioequivalence margins
  • Comparison of serum adalimumab concentrations over time
  • Comparisons of safety and immunogenicity profiles

*Study contained both EU- and US-approved Humira, but only
the US arm results are shown here.

AUC0-inf=area under the serum concentration–time curve from time zero (predose) extrapolated to infinity; AUC0-t=area under the serum concentration–time curve from time zero (predose) to the time of the last quantifiable concentration; Cmax=maximum serum concentration.

Review pharmacokinetics
results from this study

Pharmacokinetics results supported bioequivalence1

  • Primary PK parameters were similar between SIMLANDI and Humira and were contained within the prespecified
    bioequivalence margins of 80% and 125%

Combined Geometric Mean Ratio (90% CI) SIMLANDI/Humira

Cmax, ng/mL AUC0-t, ng•h/mL AUC0-inf, ng•h/mL
1.01 (0.93-1.09) 1.03 (0.93-1.15) 1.04 (0.92-1.16)

MEAN SERUM CONCENTRATION-TIME PROFILES

Chart showing mean serum concentration-time profiles from the pharmacokinetics study

AUC0-inf=area under the serum concentration–time curve from time zero (predose) extrapolated to infinity; AUC0-t=area under the serum concentration–time curve from time zero (predose) to the time of the last quantifiable concentration; CI=confidence interval; Cmax=maximum serum concentration; PK=pharmacokinetics.

See safety results
from this study

The safety profiles of SIMLANDI and Humira supported bioequivalence1

TEAEs

SIMLANDI (n=130)
n (%)
Humira (n=131)
n (%)
Any TEAE 103 (79.2) 106 (80.9)
TEAEs of special interest 19 (14.6) 18 (13.7)
TEAEs leading to early withdrawal 0 (0.0) 0 (0.0)
System organ class preferred term*
Infections and infestations 45 (34.6) 57 (43.5)
Upper respiratory tract infection 35 (26.9) 35 (26.7)
Nervous system disorders 42 (32.3) 41 (31.3)
Headache 37 (28.5) 36 (27.5)
General disorders and administration-site conditions 27 (20.8) 26 (19.8)
Injection-site erythema 16 (12.3) 9 (6.9)
Influenza-like illness 7 (5.4) 3 (2.3)
Injection-site pain 4 (3.1) 7 (5.3)
Gastrointestinal disorders 19 (14.6) 27 (20.6)
Nausea 6 (4.6) 11 (8.4)
Vomiting 0 (0) 7 (5.3)
Respiratory, thoracic, and mediastinal disorders 20 (15.4) 25 (19.1)
Oropharyngeal pain 11 (8.5) 11 (8.4)
Nasal congestion 3 (2.3) 7 (5.3)
Musculoskeletal and connective tissue disorders 14 (10.8) 13 (9.9)
Back pain 7 (5.4) 4 (3.1)

*TEAE frequency ≥5%.

TEAE=treatment-emergent adverse event.

Review immunogenicity results from this study

SIMLANDI demonstrated comparable immunogenicity to Humira1

  • In the pharmacokinetics study, immunogenicity was measured up to 64 days. The onset and frequency of
    ADA and NAb development over time were similar in both treatment groups

IMMUNOGENICITY RESULTS

Number of patients (%)
ADA detection NAb detection
Study day (N) Positive Positive
SIMLANDI
Day 1 (predose) (n=130) 8 (6.2) 0 (0)
Day 9 (n=130) 45 (34.6) 2 (4.3)
Day 15 (n=130) 89 (68.5) 1 (1.1)
Day 29 (n=130) 105 (80.8) 15 (14.3)
Day 64/EOS (n=129) 124 (96.1) 100 (80.6)
Humira
Day 1 (predose) (n=131) 7 (5.3) 2 (28.6)
Day 9 (n=131) 42 (32.1) 2 (4.8)
Day 15 (n=131) 87 (66.4) 2 (2.3)
Day 29 (n=130) 105 (80.8) 17 (16.2)
Day 64/EOS (n=129) 123 (95.3) 107 (87.0)

Individual immunogenicity sample collection and ADA results (including NAb results, if available) are listed for all patients. Detection of ADAs (positive or negative) was summarized with frequency counts by treatment group and nominal study day.

ADA=antidrug antibody; EOS=end of study; NAb=neutralizing antibody.

The SIMLANDI Autoinjector

Reference:

1. Wynne C, Schwabe C, Lemech C, et al. A randomized, adaptive design, double-blind, 3-arm, parallel study assessing the pharmacokinetics and safety of AVT02, a high-concentration (100 mg/mL) adalimumab biosimilar, in healthy adult subjects (ALVOPAD FIRST). Expert Opin Investig Drugs. 2022;31(9):965-976.