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Peanut AllergyPhase 2NCT02920021

Study to Investigate Etokimab (ANB020) Activity in Adult Participants With Peanut Allergy

A Phase 2 study testing Etokimab in people with Peanut Allergy, run by AnaptysBio, Inc. at 2 sites in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The purpose of this study is to determine etokimab safety, tolerability and activity in adult participants with peanut allergy. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Peanut Allergy
What is being tested?
Etokimab
Type of treatment
Injection or infusion
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
20 participants
Where
2 sitesUnited States
Study dates
26 Jan 2017to 30 Mar 2018
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

  • Male and female participants with age > 18 years and able to give informed consent.
  • Participants with a confirmed clinically allergic response to peanut.
  • Positive clinical reaction during the peanut oral food challenge and no clinical reaction during the placebo challenge
  • Positive peanut allergy skin prick test > 3 millimeters (mm) of the negative control and detectable serum peanut-specific Immunoglobulin E (IgE) levels by ImmunoCAP testing.
  • Body mass index (BMI) of 18 to 36 kilogram per square meter (kg/m^2) inclusive) and total body weight > 50 kg (110 lb). BMI = weight (kg)/(height [m^2]).
  • Willing and able to comply with the study protocol requirements.
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  • Have the ability to read and understand the study procedures and have the ability to communicate meaningfully with the Investigator and staff.
  • Women of childbearing potential, must have a negative serum pregnancy test at screening and Day 1, and be surgically sterile or using an acceptable method of contraception throughout the study and for 15 weeks after the last administration of investigational product. Postmenopausal participants defined as (1) aged over 45 years with at least 1 year of amenorrhea and levels of follicle stimulating hormone over 20 international units per liter (IU/L) or (2) aged over 50 years with at least 1 year of amenorrhea.
  • Male participants must be willing to use effective methods of contraception during the entire study period and for 15 weeks after the last administration of investigational product.

Who cannot join

  • Have concomitant dermatological or medical condition(s) which may interfere with the Investigator's ability to evaluate the participant's response to the investigational product.
  • Have experienced severe life-threatening anaphylactic reactions to peanuts within 6 months before screening (i.e., requiring an intensive care unit [ICU] admission).
  • Positive clinical reaction observed during the placebo oral food challenge.
  • Participation in any interventional study for the treatment of peanut and/or food allergies in the 12 months before screening.
  • Have received any investigational product or been part of any interventional clinical study within a period of 3 months or 5 half-lives (whichever is longer) before screening.
  • Have received systemic corticosteroids, nonsteroidal, immunosuppressant, or immunomodulating drugs treatments within 2 weeks before screening.
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  • Use of beta blockers, angiotensin-converting enzyme inhibitors, angiotensin-receptor blockers, or calcium channel blockers within 2 weeks before screening.
  • History of ischemic cardiovascular diseases.
  • Use of biologics within 6 months before screening or participant is in build-up phase of allergen immunotherapy (excluding peanut) and has not reached maintenance dose.
  • Have received antibiotic treatment within 1 week before screening.
  • Have a history of hypersensitivity or allergic reactions following infusions of human blood or blood components.
  • Have a history of hypersensitivity or allergic reactions a component of etokimab formulation or the inactive ingredients (excipients).
  • If female, are pregnant or lactating, or intend to become pregnant during the study period.
  • Current diagnosis of asthma requiring Global Initiative for Asthma Assessment (GINA) Step 4 or higher treatment or asthma partially controlled or uncontrolled according to GINA classifications in the last three months before screening.
  • History of a life threatening asthma attack within 1 year before screening (example: requiring an intensive care unit admission, intubation with mechanical ventilation).
  • Other significant medical conditions that in the opinion of the Principal Investigator, prevent participation in the study.
  • History of drug, alcohol or other substance abuse, or other factors limiting the ability to cooperate and to comply with the study protocol.
  • Have any other physical, mental, or medical conditions which, in the opinion of the Investigator, make study participation inadvisable or could confound study assessments.
  • Receipt of a live attenuated vaccine within 4 weeks before screening.
  • Planned surgery during the study or 30 days before screening.

Trial locations and contacts

2 sites in 1 country.

United States2 sites
  • Stanford Univ. Medical Center

    Palo Alto, California, 94305

  • Asthma, Inc Clinical Research Center

    Seattle, Washington, 98115

Other trials in United States

About this study

Official title: Placebo-Controlled Proof of Concept Study to Investigate ANB020 Activity in Adult Patients With Peanut Allergy

The purpose of this study is to determine etokimab safety, tolerability and activity in adult participants with peanut allergy.

Read the detailed description

This is a multi-center, randomized, double-blind, placebo-controlled, proof of concept study to assess the safety and tolerability of etokimab in adult participants with peanut allergy.

Conditions
Peanut Allergy
Being tested
Etokimab, Placebo
Medical subject headings
Peanut Hypersensitivity

What participants receive

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

  • EtokimabDrug

    Also called ANB020

    Humanized monoclonal antibody, administered by intravenous infusion

  • PlaceboDrug

    Administered by intravenous infusion

Study groups in NCT02920021
Study groupRoleWhat they receive
EtokimabExperimentalParticipants received a single dose of 300 milligrams (mg) etokimab administered by 1-hour intravenous (IV) infusion on Day 1.
Receives: Drug: Etokimab
PlaceboPlacebo comparatorParticipants received a single dose of placebo administered by 1-hour IV infusion on Day 1.
Receives: Drug: Placebo

What is being measured

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

  1. Number of Participants With Treatment-emergent Adverse Events (TEAEs)

    An adverse event (AE) is any untoward medical occurrence in a patient or clinical investigation patient administered a pharmaceutical product and which does not necessarily have a causal relationship with this treatment. AEs include any clinical laboratory test results determined to be clinically significant by the investigator. AE was considered "serious" if there was any of the following outcomes: death, life-threatening AE, inpatient hospitalization or prolongation of existing hospitalization, persistent or significant incapacity or substantial disruption of the ability to conduct normal life functions, congenital anomaly/birth defect, other important medical events. Each AE was evaluated for severity (mild, moderate, or severe) and causal relationship to the study drug. AE was considered TEAE if the date of onset was during or after first dose of study treatment, or if the AE present at baseline worsened in either intensity or frequency after first dose of study treatment.

    Measured: From first dose of study drug up to 45 days.

  2. Change From Baseline in Cumulative Tolerated Peanut Dose During Oral Food Challenge

    Oral food challenges were performed at Baseline and Day 14 in accordance with the Practical Allergy (PRACTALL) consensus report. Escalating doses of peanut protein (peanut flour mixed with a non-allergic food vehicle such as apple sauce) consisting of 5, 20, 50, 100, 100, 100, and 125 mg (for a cumulative maximum dose of 500 mg) were given at 20 minute intervals. If the participant developed any signs of an objective allergic reaction, the challenge was stopped. The total cumulative tolerated dose of blinded peanut reached prior to reaction was recorded.

    Measured: Baseline and Day 14

Secondary outcomes (10)
  1. Change From Baseline in Oral Food Challenge Symptom Score at Day 14

    Oral food challenges were performed at Baseline and Day 14 in accordance with the PRACTALL consensus report.

    During OFC the OFC Symptom Scoring Assessment Tool was used to assess participants for common symptoms that can be suspected to be an allergic reaction involving the skin, upper respiratory, lower respiratory, gastrointestinal, and cardiovascular systems. Each symptom was scored according to the following scale: Grade 0 = sign or symptom not observed; Grade 1 = mild; Grade 2 = moderate, Grade 3 = severe. The score from each symptom was averaged to calculate the overall score at Baseline and on Day 14.

    Measured: Baseline and Day 14

  2. Maximum Observed Concentration (Cmax) of Etokimab

    The concentration of etokimab was measured using a validated assay method. The lower limit of quantification (LLOQ) was 0.400 microgram per milliliter (μg/mL).

    Measured: Day 1 predose, 0.5 hours after the start of the infusion, end of infusion (EOI), 3 hours after EOI, 24, 96, 336 (Day 15), and 1056 (Day 45) hours after the start of infusion.

  3. Time to Maximum Observed Concentration (Tmax) of Etokimab

    The concentration of etokimab was measured using a validated assay method. The lower limit of quantification (LLOQ) was 0.400 μg/mL.

    Measured: Day 1 predose, 0.5 hours after the start of the infusion, EOI, 3 hours after EOI, 24, 96, 336 (Day 15), and 1056 (Day 45) hours after the start of infusion.

  4. Area Under the Concentration-time Curve in Serum From Time Zero Extrapolated to Infinite Time (AUC0-inf) for Etokimab

    Area under the concentration-time curve in serum from time zero (predose) extrapolated to infinite time, calculated by linear up/log down trapezoidal summation and extrapolated to infinity by addition of the last quantifiable concentration (Clast) divided by the apparent terminal rate constant (λz): AUC(0-last) + Clast/λz.

    Measured: Day 1 predose, 0.5 hours after the start of the infusion, EOI, 3 hours after EOI, 24, 96, 336 (Day 15), and 1056 (Day 45) hours after the start of infusion.

  5. Area Under the Concentration-time Curve in Serum From Time Zero to the Time of the Last Quantifiable Concentration (AUC0-last) for Etokimb

    Area under the serum concentration-time curve from time zero to the time of the last quantifiable concentration, calculated by linear up/log down trapezoidal summation.

    Measured: Day 1 predose, 0.5 hours after the start of the infusion, EOI, 3 hours after EOI, 24, 96, 336 (Day 15), and 1056 (Day 45) hours after the start of infusion.

  6. Apparent Terminal Half-life (T1/2) for Etokimab

    Measured: Day 1 predose, 0.5 hours after the start of the infusion, EOI, 3 hours after EOI, 24, 96, 336 (Day 15), and 1056 (Day 45) hours after the start of infusion.

  7. Systemic Clearance for Etokimab

    Systemic clearance calculated as dose/ AUC(0-inf).

    Measured: Day 1 predose, 0.5 hours after the start of the infusion, EOI, 3 hours after EOI, 24, 96, 336 (Day 15), and 1056 (Day 45) hours after the start of infusion.

  8. Volume of Distribution at Steady State Following IV Dosing (Vss) for Etokimab

    Volume of distribution at steady state following intravenous dosing, calculated as mean residence time (extrapolated to infinity) multiplied by systemic clearance.

    Measured: Day 1 predose, 0.5 hours after the start of the infusion, EOI, 3 hours after EOI, 24, 96, 336 (Day 15), and 1056 (Day 45) hours after the start of infusion.

  9. Volume of Distribution (Vz)

    Volume of distribution is defined as the theoretical volume in which the total amount of drug would need to be uniformly distributed to produce the desired plasma concentration of a drug. Volume of distribution was estimated by dividing the systemic clearance by apparent terminal rate constant (λz).

    Measured: Day 1 predose, 0.5 hours after the start of the infusion, EOI, 3 hours after EOI, 24, 96, 336 (Day 15), and 1056 (Day 45) hours after the start of infusion.

  10. Apparent Terminal Rate Constant (λz)

    The terminal elimination rate constant (λz) is defined as the first-order rate constant describing the rate of decrease of drug concentration in the terminal phase. Apparent terminal rate constant was determined by linear regression of the terminal points of the log-linear concentration-time curve.

    Measured: Day 1 predose, 0.5 hours after the start of the infusion, EOI, 3 hours after EOI, 24, 96, 336 (Day 15), and 1056 (Day 45) hours after the start of infusion.

Timeline

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

  1. First posted30 Sep 2016 (estimated)
  2. Study start26 Jan 2017
  3. Primary completion30 Mar 2018
  4. Study completion30 Mar 2018

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
20 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02920021
Sponsor's protocol ID
ANB020-003
Status last verified
Jul 2023
First submitted
26 Sep 2016
Last updated
27 Jul 2023
Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No

Publications

  • Chinthrajah S, Cao S, Liu C, Lyu SC, Sindher SB, Long A, Sampath V, Petroni D, Londei M, Nadeau KC. Phase 2a randomized, placebo-controlled study of anti-IL-33 in peanut allergy. JCI Insight. 2019 Nov 14;4(22):e131347. doi: 10.1172/jci.insight.131347.

    PubMed 31723064

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Etokimab in people with Peanut Allergy, run by AnaptysBio, Inc. at 2 sites in United States.

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 9 inclusion and 20 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: finished, as of the sponsor's last update on 27 Jul 2023. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 2 sites in United States. 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 Jul 2023). 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?

Number of Participants With Treatment-emergent Adverse Events (TEAEs) (time frame: From first dose of study drug up to 45 days.). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT02920021, which also lists 1 linked publication.

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 Jul 2023.

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