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Chronic Spontaneous UrticariaPhase 2MAVERICKNCT05528861

A Study to Assess Subcutaneous Lirentelimab (AK002) in Chronic Spontaneous Urticaria

A Phase 2 study testing Lirentelimab (AK002) in people with Chronic Spontaneous Urticaria, run by Allakos Inc. at 67 sites in 3 countries.

Terminated

Stopped early. The study ended before it was planned to and will not resume.

Official record
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Trial summary

This is a Phase 2, multicenter, randomized, double-blind, placebo-controlled study to evaluate the efficacy and safety of subcutaneous lirentelimab (AK002) in adult subjects with H-1 antihistamine refractory chronic spontaneous urticaria. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Chronic Spontaneous Urticaria
What is being tested?
Lirentelimab (AK002)
Type of treatment
Injection or infusion
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
127 participants
Where
67 sitesin 3 countries
Study dates
26 Oct 2022to 18 Apr 2024
Phase
Phase 2
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Subject is able to understand the information on the study, has the capacity to consent, and has provided written informed consent.
  • Male and female subjects ≥18 years of age at the time of screening.
  • CSU diagnosis for ≥6 months.
  • Diagnosis of moderate-severe CSU refractory to H1-antihistamine (H1-AH) at a minimum of the licensed dose at the licensed frequency at the time of randomization as defined by the following: presence of hives and itch for ≥6 consecutive weeks prior to Screening Visit 1; UAS7 score (range 0-42) ≥16 and HSS7 score (range 0-21) ≥8 during the 7 days prior to randomization.
  • Subjects that are omalizumab-naïve or omalizumab-exposed.
  • Subjects must be on stable dose of H1-AH, between 1x and 4x of the licensed dose and at the licensed frequency, for treatment of CSU for at least 1 week prior to screening and willing to remain on a stable dose throughout the study.
  • Able and compliant with completing a daily symptom eDiary for the duration of the study and adherent to the study visit schedules.

Who cannot join

  • History of hypersensitivity to the study drugs or their excipients or to drugs of similar chemical classes (i.e., murine, chimeric or human antibodies).
  • Current use of biologics for any indication.
  • Demonstrated lack of primary response to treatment with a biologic therapy (e.g., omalizumab) for the treatment of CSU.
  • Use of any of the following treatments within 4 weeks prior to the baseline visit or any condition that in the opinion of the Investigator is likely to require such treatment(s) during the first 4 weeks of study treatment: (i) immunosuppressive or immunomodulatory drugs, including but not limited to systemic calcineurin inhibitors (e.g., cyclosporin, tacrolimus), mTOR inhibitors (e.g., sirolimus, everolimus), anti-metabolites (e.g., azathioprine, methotrexate, 6-mercaptopurine, leflunomide, mycophenolate mofetil), alkylating agents (e.g., cyclophosphamide), TNF inhibitors (e.g., infliximab, adalimumab), and eosinophil-depleting drugs (e.g., benralizumab, pramipexole); (ii) routine (daily or every other day during 5 or more consecutive days) doses of systemic hydroxychloroquine; (iii) intravenous immunoglobulin (IVIG); (iv) plasmapheresis.
  • Use of oral Janus kinase (JAK) inhibitors within 8 weeks of the baseline visit.
  • Use of any of the following treatments within 3 weeks prior to the baseline visit: (i) H2 antihistamines (H2-AH); (ii) routine (daily or every other day during 5 or more consecutive days) doses of systemic corticosteroids; (iii) regular (daily or every other day) doxepin (oral); (iv) leukotriene receptor antagonists (LTRA) (e.g., montelukast, zafirlukast).
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  • H1-AH use at greater than approved doses or greater than local CSU guideline recommended doses after Screening Visit 1.
  • Previous treatment with biologics: (i) any cell-depleting agents including but not limited to rituximab within 6 months prior to the baseline visit or until lymphocyte count returns to normal, whichever is longer; (ii) other biologics, including investigational biologics (e.g., dupilumab, omalizumab, benralizumab, etc) within 5 half-lives if known or 8 weeks prior to the baseline visit, whichever is longer.
  • Planned or anticipated use of any prohibited medication.
  • Subjects having causes other than CSU for their urticaria including symptomatic dermographism, cholinergic urticaria, or any inducible urticaria.
  • Subjects with known or suspected urticarial vasculitis.
  • Subjects with known or suspected hereditary angioedema.
  • Any other skin disease associated with chronic itch, including atopic dermatitis, that in the Investigator's opinion might influence study outcome and subject's interpretation of symptoms caused by CSU.
  • A helminth parasitic infection diagnosed within 6 months prior to the date that informed consent is obtained and has not been treated with or has failed to respond to standard-of-care therapy.
  • Participation in a concurrent interventional study with the last intervention occurring within 30 days prior to study drug administration (or 90 days or 5 half-lives, whichever is longer, for biologic products).
  • Vaccination with live attenuated vaccines within 30 days prior to initiation of treatment in the study, during the treatment period, or vaccination expected within 5 half-lives (4 months) of study drug administration. This exclusion criterion does not apply to all types and formulations of vaccines (including live attenuated vaccines) currently authorized/approved by FDA or other regulatory authority for the prevention of COVID-19, which may be administered before, during, or after the study. The vaccine should not be administered within 3 days before and within 3 days after the administration of lirentelimab so that any side effects caused by either of the 2 medications can more easily be determined.

Trial locations and contacts

67 sites in 3 countries.

67 sites in 3 countries

United States51 sites
  • Allakos Investigational Site 227-034

    Ann Arbor, Michigan, 48106

  • Allakos Investigational Site 227-002

    Asheville, North Carolina, 28801

  • Allakos Investigational Site 227-055

    Austin, Texas, 78759

  • Allakos Investigational Site 227-058

    Bakersfield, California, 93301

  • Allakos Investigational Site 227-019

    Baltimore, Maryland, 21224

  • Allakos Investigational Site 227-024

    Birmingham, Alabama, 35209

  • Allakos Investigational Site 227-045

    Boise, Idaho, 83706

  • Allakos Investigational Site 227-016

    Boston, Massachusetts, 02111

  • Allakos Investigational Site 227-022

    Brooklyn, New York, 11203

  • Allakos Investigational Site 227-013

    Cincinnati, Ohio, 45229

  • Allakos Investigational Site 227-029

    Cincinnati, Ohio, 45236

  • Allakos Investigational Site 227-006

    Colorado Springs, Colorado, 80907

  • Allakos Investigational Site 227-018

    Columbus, Georgia, 31904

  • Allakos Investigational Site 227-043

    Columbus, Ohio, 43235

  • Allakos Investigational Site 227-068

    Cullman, Alabama, 35058

  • Allakos Investigational Site 227-032

    Detroit, Michigan, 48202

  • Allakos Investigational Site 227-073

    Dilworth, Minnesota, 56529

  • Allakos Investigational Site 227-049

    El Paso, Texas, 79903

  • Allakos Investigational Site 227-070

    Farmington Hills, Michigan, 48346

  • Allakos Investigational Site 227-007

    Great Neck, New York, 11021

  • Allakos Investigational Site 227-033

    Greenfield, Wisconsin, 53228

  • Allakos Investigational Site 227-028

    Hershey, Pennsylvania, 17033

  • Allakos Investigational Site 227-036

    Jacksonville, Florida, 32256

  • Allakos Investigational Site 227-051

    Lexington, Kentucky, 40509

  • Allakos Investigational Site 227-026

    Los Angeles, California, 90025

  • Allakos Investigational Site 227-009

    Los Angeles, California, 90045

  • Allakos Investigational Site 227-062

    Miami, Florida, 33135

  • Allakos Investigational Site 227-011

    Mission Viejo, California, 92691

  • Allakos Investigational Site 227-059

    Missoula, Montana, 59808

  • Allakos Investigational Site 227-039

    Murray, Utah, 84107

  • Allakos Investigational Site 227-071

    Murray, Utah, 84107

  • Allakos Investigational Site 227-045

    Normal, Illinois, 61761

  • Allakos Investigational Site 227-066

    North Charleston, South Carolina, 29420

  • Allakos Investigational Site 227-060

    Oklahoma City, Oklahoma, 73170

  • Allakos Investigational Site 227-047

    Overland Park, Kansas, 66211

  • Allakos Investigational Site 227-040

    Philadelphia, Pennsylvania, 19103

  • Allakos Investigational Site 227-014

    Phoenix, Arizona, 85021

  • Allakos Investigational Site 227-074

    Plainfield, Indiana, 46168

  • Allakos Investigational Site 227-027

    Portland, Oregon, 97223

  • Allakos Investigational Site 227-057

    River Forest, Illinois, 60305

  • Allakos Investigational Site 227-052

    Rochester, Minnesota, 55905

  • Allakos Investigational Site 227-021

    Santa Monica, California, 90404

  • Allakos Investigational Site 227-041

    Sarasota, Florida, 34239

  • Allakos Investigational Site 227-023

    Scottsdale, Arizona, 85251

  • Allakos Investigational Site 227-008

    St Louis, Missouri, 63141

  • Allakos Investigational Site 227-067

    Tampa, Florida, 33607

  • Allakos Investigational Site 227-005

    Tampa, Florida, 33613

  • Allakos Investigational Site 227-064

    Toledo, Ohio, 43617

  • Allakos Investigational Site 227-012

    Towson, Maryland, 21204

  • Allakos Investigational Site 227-031

    Upland, California, 91786

  • Allakos Investigational Site 227-063

    White Marsh, Maryland, 21162

Other trials in United States

Germany12 sites
  • Allakos Investigational Site 227-204

    Augsburg, 86179

  • Allakos Investigational Site 227-201

    Berlin, 12203

  • Allakos Investigational Site 227-214

    Buxtehude, 21614

  • Allakos Investigational Site 227-205

    Darmstadt, 64297

  • Allakos Investigational Site 227-209

    Erlangen, 91054

  • Allakos Investigational Site 227-208

    Frankfurt, 60590

  • Allakos Investigational Site 227-207

    Langenau, 89129

  • Allakos Investigational Site 227-203

    Leipzig, 04103

  • Allakos Investigational Site 227-210

    Mainz, 55128

  • Allakos Investigational Site 227-202

    Mainz, 55131

  • Allakos Investigational Site 227-211

    Munich, 80802

  • Allakos Investigational Site 227-206

    Osnabrück, 49074

Other trials in Germany

Poland4 sites
  • Allakos Investigational Site 227-302

    Lodz

  • Allakos Investigational Site 227-304

    Lodz

  • Allakos Investigational Site 227-303

    Lublin

  • Allakos Investigational Site 227-301

    Zabrze

Other trials in Poland

About this study

Official title: A Phase 2, Multicenter, Randomized, Double-Blind, Placebo-Controlled Study to Evaluate the Efficacy and Safety of Lirentelimab in Adult Subjects With H-1 Antihistamine Refractory Chronic Spontaneous Urticaria

This is a Phase 2, multicenter, randomized, double-blind, placebo-controlled study to evaluate the efficacy and safety of subcutaneous lirentelimab (AK002) in adult subjects with H-1 antihistamine refractory chronic spontaneous urticaria. Subjects who complete the randomized, double-blind, placebo-controlled treatment period may have the option to enroll in an open-label extension period and receive up to 6 doses of subcutaneous lirentelimab.

Being tested
Lirentelimab (AK002), Placebo
Keywords
Chronic Spontaneous Urticaria, Chronic Urticaria, Urticaria, Chronic Idiopathic Urticaria, Chronic Autoimmune Urticaria, Idiopathic Chronic Urticaria, Autoimmune Urticaria
Medical subject headings
Chronic Urticaria, Urticaria

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Lirentelimab (AK002)Drug

    Also called AK002

    Lirentelimab (AK002) is a humanized non-fucosylated immunoglobulin G1 (IgG1) monoclonal antibody directed against Siglec-8

  • PlaceboOther

    Placebo

Study groups in NCT05528861
Study groupRoleWhat they receive
Lirentelimab (AK002)ExperimentalSubjects in this arm will receive lirentelimab (AK002) administered subcutaneously.
Receives: Drug: Lirentelimab (AK002)
PlaceboPlacebo comparatorPlacebo
Receives: Other: Placebo

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Absolute Change in Weekly Urticaria Assessment Score (UAS7) From Baseline at Week 12

    The UAS7 is the sum for 7 days of the daily Hives Severity Score (HSS) and the daily Itch Severity Score (ISS). The daily HSS is recorded on a scale of 0 (none) to 3 (>50 hives) and the daily ISS is recorded on a scale of 0 (none) to 3 (severe). Therefore, the possible range of the weekly UAS7 score is 0-42, with 42 being the most severe.

    Measured: Baseline to Week 12

Secondary outcomes (3)
  1. Absolute Change in Hives Severity Score (HSS7) From Baseline at Week 12

    The severity of hives will be recorded by all subjects once daily on a scale of 0 (none) to 3 (> 50 hives). A weekly HSS score (HSS7) is derived by adding the average daily scores of the 7 days preceding the visit. Therefore, the possible range of the weekly score is 0 - 21.

    Measured: Baseline to Week 12

  2. Absolute Change in Itch Severity Score (ISS7) From Baseline at Week 12

    The severity of itching will be recorded by all subjects once daily on a scale of 0 (none) to 3 (severe). A weekly ISS score (ISS7) is derived by adding the average daily scores of the 7 days preceding the visit. Therefore, the possible range of the weekly score is 0 - 21.

    Measured: Baseline to Week 12

  3. Proportion of Subjects Achieving Weekly Urticaria Assessment Score (UAS7)=0 at Week 12

    The UAS7 is the sum for 7 days of the daily Hives Severity Score (HSS) and the daily Itch Severity Score (ISS). The possible range of the UAS7 is 0-42.

    Measured: At Week 12

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted6 Sep 2022
  2. Study start26 Oct 2022
  3. Primary completion27 Dec 2023
  4. Study completion18 Apr 2024

Why it stopped: No longer pursuing development

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
127 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05528861
Sponsor's protocol ID
AK002-027
Acronym
MAVERICK
Status last verified
Sep 2024
First submitted
1 Sep 2022
Last updated
27 Sep 2024
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Lirentelimab (AK002) in people with Chronic Spontaneous Urticaria, run by Allakos Inc. at 67 sites in 3 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 7 inclusion and 16 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: stopped early, as of the sponsor's last update on 27 Sep 2024. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 67 sites in United States, Germany, Poland. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 27 Sep 2024). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Absolute Change in Weekly Urticaria Assessment Score (UAS7) From Baseline at Week 12 (time frame: Baseline to Week 12). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 27 Sep 2024; AzTrials last refreshed its copy on 7 Nov 2026.

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