Long-term Safety and Efficacy of Efavaleukin Alfa in Participants With Moderately to Severely Active Ulcerative Colitis

Stopped early · Phase 2 · Has a placebo group

Conditions studied: Ulcerative Colitis

In brief

The primary objective of this study is to evaluate the long-term safety and tolerability of efavaleukin alfa in participants with moderate to severe ulcerative colitis (UC).

Key facts

Study ID: NCT05672199
Run by: Amgen
People needed: 25
Starts: 2023-04-28
Expected to finish: 2024-10-31
Last updated by the study team: 2025-10-15

Who can join

Age: 18 and older, up to 80. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

Participant has provided informed consent prior to initiation of any study specific activities/procedures.
Participant has completed the week 52 endoscopy in the phase 2 dose-finding parent study (20170104) and who in the opinion of the investigator may benefit from continued treatment.

You may not qualify if…

Permanent discontinuation of investigational product during the 52- week phase 2 dose finding parent study (20170104) for any reason
Female subjects of reproductive potential must agree not to donate eggs during the study and for 6 weeks after receiving the last dose of investigational product.
Disease Related:
Adenoma and dysplasia exclusion criteria:
Any current sporadic adenoma without dysplasia (adenomatous polyps occurring proximal to known areas of colitis) that has not been removed.
Dysplasia occurring in flat mucosa, sporadic adenomas containing dysplasia, and dysplasia-associated lesions or masses will be managed as follows:
Any history or current evidence of high-grade dysplasia.
Any history or current evidence of dysplasia occurring in flat mucosa.
This includes histopathology reporting indefinite for dysplasia, low-grade dysplasia, and high-grade dysplasia.
Any history or current evidence of a nonadenoma like dysplasia associated lesions or masses, with or without evidence of dysplasia.
Any current sporadic adenoma containing dysplasia or any current adenoma-like dysplasia-associated lesions or masses that has not been removed.
Other Medical Conditions:
Any malignancy diagnosed during parent Study 20170104, including evidence of cutaneous basal or squamous cell carcinoma or melanoma
Active infection (including chronic, acute, recurrent, opportunistic infections) at the time of eligibility evaluation requiring intravenous (IV) anti-infectives or hospitalization (infections requiring oral and/or topical anti-infective[s] for > 7 days may be allowed in consultation with the Amgen physician).
Required systemic corticosteroid use for any indication other than ulcerative colitis. The only exception is corticosteroids used for the treatment of adrenal insufficiency are allowed.
Plan to receive a live (attenuated) vaccine during the treatment period and up to 6 weeks after the last dose of investigational product in the long term extension study.
Prior/Concurrent Clinical Study Experience:
Currently receiving treatment in another investigational device or drug study. Other investigational procedures while participating in this study are excluded.
Other Exclusions:
Female participants who are pregnant or breastfeeding or planning to become pregnant or breastfeed during study and for an additional 6 weeks after the last dose of investigational product.
Female participants of childbearing potential unwilling to use protocol specified method of contraception see Appendix 5 (Section 11.5) during treatment and for an additional 6 weeks after the last dose of investigational product.
Participant has known sensitivity to any of the products to be administered during dosing with the exception of participants who exhibited sensitivity in parent Study 20170104 but did not result in treatment discontinuation.
Participant likely to not be available to complete all protocol-required study visits or procedures, and/or to comply with all required study procedures (e.g., Clinical Outcome Assessments) to the best of the participant and investigator's knowledge.
Participant has a history or evidence of any other clinically significant disorder (including laboratory abnormalities), condition, or disease that, in the opinion of the investigator or Amgen physician, if consulted would pose a risk to participant safety, or interfere with the study evaluation, procedures, or completion.

Where it is running

Santa Maria Gastroenterology Medical Group — Santa Maria, California, United States
Indian Health Service Health Research — Kissimmee, Florida, United States
University of Kansas Medical Center — Kansas City, Kansas, United States
Centro de Investigaciones Medicas Mar del Plata — Mar del Plata, Buenos Aires, Argentina
Clinica Independencia — Munro, Buenos Aires, Argentina
Cer Instituto Medico — Quilmes, Buenos Aires, Argentina
Diagnostic-Consultative Center Convex EOOD — Sofia, Bulgaria
Herlev Hospital — Herlev, Denmark
Universitaetsklinikum Ulm — Ulm, Germany
MIND Klinika Kft — Budapest, Hungary
Clinexpert Kft — Budapest, Hungary
Szegedi Tudomanyegyetem Szent-Gyorgyi Albert Klinikai Kozpont Altalanos Orvostudomanyi Kar — Szeged, Hungary
Tsujinaka Hospital Kashiwanoha — Kashiwa-shi, Chiba, Japan
Nagasaki University Hospital — Nagasaki, Nagasaki, Japan
Ome Medical Center — Ome-shi, Tokyo, Japan
Clinica de Investigacion en Reumatologia y Obesidad SC — Guadalajra, Jalisco, Mexico
NZOZ Twoje Zdrowie EL Spzoo — Elblag, Poland
Centrum Medyczne Melita Medical — Wroclaw-Krzyki, Poland
Clinica Medicum — Bucharest, Romania
Memorial Healthcare International SRL — Bucharest, Romania
Spitalul Clinic Colentina — Bucharest, Romania
Wonju Severance Christian Hospital — Wonju-si, Gangwon-do, South Korea
Intesto BE — Bern, Switzerland
Kocaeli Universitesi Tip Fakultesi Hastanesi — Kocaeli, Turkey (Türkiye)
Mersin Universitesi Tip Fakultesi Hastanesi — Mersin, Turkey (Türkiye)

Full record on ClinicalTrials.gov

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