STUDY DESIGN1

Graphic depicting the interchangeability study design

Study Design1

  • Multicenter, randomized, double-blind, parallel‐group, phase 3 study evaluating the pharmacokinetics, efficacy, safety, and immunogenicity of SIMLANDI versus Humira in 567 patients with moderate to severe chronic plaque psoriasis
  • Following 12-week open-label lead-in period in which all participants received Humira, PASI ≥75 responders were randomized 1:1 to receive SIMLANDI alternating with Humira (switching arm) or Humira only (nonswitching arm) (n=550)
  • At Week 28, participants who were PASI ≥50 responders could opt in to open-label extension phase to receive SIMLANDI up to Week 50 (n=525), with end-of-study follow-up at Week 52

PRIMARY ENDPOINTS1

  • Area under the concentration–time curve over the dosing interval from Weeks 26-28
  • Maximum concentration over the dosing interval from Weeks 26-28

SECONDARY ENDPOINTS1

  • PASI and DLQI score improvement from Weeks 1-28 and sPGA responses from Weeks 12-28
  • Included analysis of incidence, type, and severity of AEs (including adverse drug reactions), injection-site reactions,
    ADAs, physical examination, and laboratory parameters through Week 28 and during optional extension phase (Weeks 28-52)

ADA=antidrug antibody; AE=adverse event; DLQI=Dermatology Life Quality Index; PASI=Psoriasis Area and Severity Index; PK=pharmacokinetics;
sPGA=static Physician's Global Assessment.

Review pharmacokinetics
results from this study

SIMLANDI and Humira had similar pharmacokinetic profiles1

Pharmacokinetics from Weeks 26-28

Chart showing pharmacokinetics results from the interchangeability study
  • The mean concentration–time profiles for the switching and nonswitching arms were similar
  • Maximum concentration over the dosing interval from Weeks 26-28 was comparable
See efficacy results
from this study

PASI, DLQI, and sPGA responses were similar for SIMLANDI and Humira1,2

PASI efficacy results

Chart showing PASI results from the interchangeability study

DLQI efficacy results

Chart showing DLQI results from the interchangeability study

sPGA efficacy results

Chart showing sPGA results from the interchangeability study]

DLQI=Dermatology Life Quality Index; PASI=Psoriasis Area and Severity Index; sPGA=static Physician's Global Assessment.

Review safety results
from this study

Safety results in patients switched between Humira and SIMLANDI supported interchangeability1,2

TEAEs IN ≥1% OF PATIENTS IN ANY TREATMENT GROUP

Stage 2 (Weeks 12-28) Stage 3 (Weeks 28-52)
System organ class preferred term SIMLANDI/Humira/
SIMLANDI (n=277)

n (%)
Humira (n=273)
n (%)
SIMLANDI (n=525)
n (%)
Any TEAE 86 (31.0) 90 (33.0) 123 (23.4)
Blood and lymphatic system disorders 12 (4.3) 15 (5.5) 9 (1.7)
Leukopenia 2 (0.7) 3 (1.1)
Neutropenia 8 (2.9) 12 (4.4) 7 (1.3)
General disorders and administration-site conditions 12 (4.3) 17 (6.2) 16 (3.0)
Influenza-like illness 3 (1.1) 1 (0.4)
Injection-site reaction 7 (2.5) 15 (5.5) 14 (2.7)
Infections and infestations 28 (10.1) 19 (7.0) 32 (6.1)
COVID-19 9 (3.2) 10 (3.7) 7 (1.3)
Nasopharyngitis 6 (2.2) 4 (1.5)
Urinary tract infection 5 (1.8) 1 (0.4)
Investigations 38 (13.7) 25 (9.2) 43 (8.2)
Alanine aminotransferase increased 13 (4.7) 7 (2.6) 13 (2.5)
Aspartate aminotransferase increased 4 (1.4) 4 (1.5) 6 (1.1)
Blood creatine phosphokinase increased 11 (4.0) 3 (1.1) 6 (1.1)
Blood triglycerides increased 3 (1.1) 1 (0.4)
Gamma-glutamyl transferase increased 5 (1.8) 7 (2.6)
Hepatic enzyme increased 3 (1.1) 2 (0.7)
Neutrophil count decreased 3 (1.1) 3 (1.1)
Metabolism and nutrition disorders 7 (2.5) 12 (4.4) 13 (2.5)
Hyperglycemia 1 (0.4) 4 (1.5)
Hypertriglyceridemia 5 (1.8) 5 (1.8) 6 (1.1)
Nervous system disorders 1 (0.4) 5 (1.8) 8 (1.5)
Headache 1 (0.4) 5 (1.8) 7 (1.3)
Skin and subcutaneous tissue disorders 3 (1.1) 12 (4.4) 12 (2.3)
Alopecia 0 3 (1.1)
Psoriasis* 0 6 (2.2) 7 (1.3)

*Preferred term “Psoriasis” was used for all AEs that presented as worsening on study indication (moderate to severe chronic plaque psoriasis).

  • The AE profiles of the switching and nonswitching arms were comparable
  • Overall, there were no notable differences in severe TEAEs between treatment groups

AE=adverse event; TEAE=treatment-emergent adverse event.

See immunogenicity results
from this study

Immunogenicity was comparable between SIMLANDI and Humira out to 52 weeks2

Immunogenicity results

Chart showing immunogenicity results from the interchangeability study
  • There were no clinically meaningful differences between the immunogenicity assessments of switching between SIMLANDI and Humira and using Humira only

ADA=antidrug antibody.

Explore the biosimilarity
study for SIMLANDI

References:

1. Feldman SR, Kay R, Reznichenko N, et al. Assessing the interchangeability of AVT02 and Humira® in participants with moderate-to-severe chronic plaque psoriasis: pharmacokinetics, efficacy, safety, and immunogenicity results from a multicenter, double-blind, randomized, parallel-group study. BioDrugs. 2023;37(4):551-567. 2. Feldman SR, Kay R, Reznichenko N, et al. Assessing the interchangeability of AVT02 and Humira® in participants with moderate-to-severe chronic plaque psoriasis: pharmacokinetics, efficacy, safety, and immunogenicity results from a multicenter, double-blind, randomized, parallel-group study [supplementary information]. BioDrugs. 2023;37(4):551-567. Accessed February 1, 2024. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10197027/# 2. Data on file. Parsippany, NJ. Teva Pharmaceuticals.