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Etanercept

Generic Name
Etanercept
Brand Names
Enbrel, Eticovo, Benepali, Erelzi, Nepexto
Drug Type
Biotech
CAS Number
185243-69-0
Unique Ingredient Identifier
OP401G7OJC

Overview

Dimeric fusion protein consisting of the extracellular ligand-binding portion of the human 75 kilodalton (p75) tumor necrosis factor receptor (TNFR) linked to the Fc portion of human IgG1. The Fc component of etanercept contains the CH2 domain, the CH3 domain and hinge region, but not the CH1 domain of IgG1. Etanercept is produced by recombinant DNA technology in a Chinese hamster ovary (CHO) mammalian cell expression system. It consists of 934 amino acids. It is used to treat or manage a variety of inflammatory conditions including rheumatoid arthritis (RA), ankylosing spondylitis (AS), and juvenile idiopathic poly-articular arthritis (JIA).

Indication

Etanercept is indicated for the treatment of moderately to severely active rheumatoid arthritis in adults and in chronic moderate to severe plaque psoriasis in patients 4 years of age and older. It is also used to manage signs and symptoms of polyarticular idiopathic arthritis and Juvenile Psoriatic Arthritis in those aged 2 years and older. Etanercept is also used to manage the symptoms of psoriatic arthritis and ankylosing spondylitis.

Associated Conditions

  • Active Juvenile Psoriatic Arthritis
  • Ankylosing Spondylitis (AS)
  • Graft-versus-host Disease (GVHD)
  • Polyarticular Juvenile Idiopathic Arthritis
  • Psoriasis Vulgaris (Plaque Psoriasis)
  • Psoriatic Arthritis
  • Pyoderma Gangrenosum
  • Rheumatoid Arthritis
  • Severe Plaque psoriasis
  • Stevens-Johnson Syndrome
  • Chronic, severe Psoriatic Arthritis
  • Moderate Plaque psoriasis
  • Moderate, active Rheumatoid arthritis
  • Severe, active Rheumatoid arthritis

Research Report

Published: Jul 16, 2025

Etanercept (DB00005): A Comprehensive Monograph on a Pioneering TNF Inhibitor

Section 1: Molecular Profile and Bioengineering

Etanercept is a cornerstone biologic agent in the treatment of autoimmune diseases, representing a triumph of rational drug design and recombinant DNA technology. Its structure and production method are intricately linked to its therapeutic efficacy, stability, and clinical utility.

1.1. Structural Characterization: An Engineered Dimeric Fusion Protein

Etanercept is a large, complex biomolecule classified as a dimeric fusion protein.[1] It possesses an apparent molecular weight of approximately 150 kilodaltons (kDa) and is composed of two identical polypeptide chains, with each chain comprising 934 amino acids.[1] The defining characteristic of Etanercept is its engineered structure, which is not found in nature. It is created by fusing two distinct and functionally critical human protein domains using recombinant DNA techniques.[5]

The two key components of each polypeptide chain are:

Continue reading the full research report

Clinical Trials

Title
Posted
Study ID
Phase
Status
Sponsor
2024/11/27
Phase 4
Recruiting
2024/09/19
Phase 3
Recruiting
mAbxience Research S.L.
2024/04/30
Phase 1
Active, not recruiting
mAbxience Research S.L.
2023/08/29
N/A
Not yet recruiting
2023/08/25
Phase 2
Recruiting
National Institute of Geriatrics, Rheumatology and Rehabilitation, Poland
2023/07/18
Early Phase 1
ENROLLING_BY_INVITATION
2022/03/16
Early Phase 1
Completed
2021/11/26
Phase 4
UNKNOWN
OptiSkin Medical
2021/07/22
Phase 1
Completed
2021/01/26
N/A
Recruiting

FDA Drug Approvals

Approved Product
Manufacturer
NDC Code
Route
Strength
Effective Date
A-S Medication Solutions
50090-3531
SUBCUTANEOUS
50 mg in 1 mL
4/13/2021
Immunex Corporation
58406-010
SUBCUTANEOUS
25 mg in 0.5 mL
12/6/2023
Immunex Corporation
58406-435
SUBCUTANEOUS
50 mg in 1 mL
12/6/2023
Immunex Corporation
58406-456
SUBCUTANEOUS
50 mg in 1 mL
12/6/2023
Immunex Corporation
58406-032
SUBCUTANEOUS
50 mg in 1 mL
12/6/2023
Immunex Corporation
58406-055
SUBCUTANEOUS
25 mg in 0.5 mL
12/6/2023
Immunex Corporation
58406-446
SUBCUTANEOUS
50 mg in 1 mL
12/6/2023
A-S Medication Solutions
50090-4490
SUBCUTANEOUS
50 mg in 1 mL
6/20/2019
Immunex Corporation
58406-445
SUBCUTANEOUS
50 mg in 1 mL
12/6/2023
Immunex Corporation
58406-044
SUBCUTANEOUS
50 mg in 1 mL
12/6/2023

NMPA Drug Approvals

Approved Product
Company
Approval Number
Drug Type
Dosage Form
Approval Date
Etanercept Solution for Injection
国药准字SJ20170048
生物制品
注射剂
6/6/2024
Etanercept Solution for Injection
国药准字SJ20170049
生物制品
注射剂
6/6/2024
Etanercept for Injection
国药准字S20230069
生物制品
注射剂
12/19/2023

PPB Drug Approvals

Approved Product
Registration No.
Company
Licence No.
Strength
Registration Date
No PPB approvals found for this drug.

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