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To evaluate ixekizumab, an anti-interleukin 17A monoclonal antibody, for safety and effectiveness through 64 weeks in biologic-naive and tumor necrosis factor–inadequate responder (TNF-IR) patients with rheumatoid arthritis.
Ixekizumab is a
humanized IgG4 monoclonal antibody administered by subcutaneous injection that
targets the IL-17A cytokine. This effective study between the biologic-naive
and TNF-IR patients manifested Ixekizumab to be reliable for rheumatoid
arthritis.
To evaluate
ixekizumab, an anti-interleukin 17A monoclonal antibody, for safety and
effectiveness through 64 weeks in biologic-naive and tumor necrosis
factor–inadequate responder (TNF-IR) patients with rheumatoid arthritis.
Patients
completing the 16-week double-blind period of a phase II study were eligible to
enter the open-label extension (OLE) for an additional 48 weeks of ixekizumab
treatment. After a treatment hiatus between weeks 10 to 16, 232 biologic-naive
and 158 TNF-IR patients entered the OLE with all patients receiving 160 mg
ixekizumab at weeks 16, 18, and 20, and then every 4 weeks through Week 64.
A total of 201
(87%) biologic-naive and 99 (62%) TNF-IR patients completed the OLE.
Treatment-emergent adverse events (AE) occurred in 168 (72%) biologic-naive and
115 (73%) TNF-IR patients during the OLE. Most AE were mild to moderate in
severity and did not lead to study discontinuation. Serious AE (SAE) occurred
in 17 (7%) biologic-naive patients, including 5 (2%) serious infections and 2
(1%) deaths. SAE occurred in 18 (11%) TNF-IR patients, including 4 (3%) serious
infections and 1 (1%) death. No mycobacterial or invasive fungal infections
were reported. Clinical responses [American College of Rheumatology (ACR) 20,
ACR50, ACR70, and 28-joint Disease Activity Score with C-reactive protein]
observed at Week 16 were maintained or improved through Week 64.
Ixekizumab was
well tolerated, and safety findings in the OLE were consistent overall with
those in the double-blind period of this study. Clinical improvements observed
with ixekizumab through Week 16 were maintained or improved in patients
participating in the OLE through Week 64.
J Rheumatol. 2016 Feb;43(2):289-97
Safety and Efficacy of Open-label Subcutaneous Ixekizumab Treatment for 48 Weeks in a Phase II Study in Biologic-naive and TNF-IR Patients with Rheumatoid Arthritis
Genovese MC et al.
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