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Atopic DermatitisPhase 1NCT05859724

Evaluation of NM26-2198 in Healthy Subjects and in Patients With Moderate-to-severe Atopic Dermatitis (AD)

A Phase 1 study testing NM26-2198 in people with Atopic Dermatitis, run by Yellow Jersey Therapeutics AG at 15 sites in 4 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 randomized, double-blind, placebo-controlled, single- and multiple ascending dose study of subcutaneous (SC) administration of NM26-2198 in healthy volunteers and adult patients with moderate to-severe AD to evaluate the safety, tolerability, pharmacokinetics (PK), and immunogenicity of single (SAD) and… Read more about this study

Who is it for?
Ages 18 years and olderHealthy volunteers can take part
Conditions the study is for
Atopic Dermatitis
What is being tested?
NM26-2198
Type of treatment
Injection or infusion
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
126 participants
Where
15 sitesin 4 countries
Study dates
10 May 2023to 17 Oct 2024
Phase
Phase 1
Are there results?
None posted in the registry

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
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • SAD: Non-Asian ethnicity with grandparents and parents of non-Asian descent or Japanese descent having all four Japanese grandparents born in Japan.
  • SAD and MAD in Healthy Volunteers: Male or female aged 18 to 55 years; MAD: Male or female ≥18 years of age.
  • ALL COHORTS: Weight of 45 kg to 100 kg and BMI of 18.0 to 30.0 kg/m2.
  • SAD and MAD in Healthy Volunteers: Non-childbearing, non-breastfeeding females or males willing to use double barrier contraception or abstention from sex and sperm donation during the study; MAD: Males willing to use double barrier contraception or abstention from sex and sperm donation during the study; non-childbearing females or females of childbearing potential using protocol-defined method contraception, and who is not pregnant, lactating, or breastfeeding.
  • MAD: Diagnosis of chronic AD.
  • MAD: EASI score ≥16.
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  • MAD: vIGA-AD™ score of ≥3.
  • MAD: Atopic lesions cover ≥10% of body surface area (BSA).
  • MAD: PP-NRS score ≥4.
  • MAD: Daily use of non-prescription emollient.
  • Note: Other protocol-defined Inclusion criteria apply.

Who cannot join

  • SAD and MAD in Healthy Volunteers: Any clinically-relevant medical history or lab abnormality, including positive test for SARS-CoV-2, Hepatitis B or C, or HIV; MAD: Clinically-significant, abnormal laboratory findings, or positive test for SARS-CoV-2, Hepatitis B or C, or HIV.
  • ALL COHORTS: Clinically important ECG abnormalities or history/evidence thereof.
  • SAD and MAD in Healthy Volunteers: Use of prescription or non-prescription medications (except occasional use of paracetamol).
  • MAD: Diagnosis of protocol-specified skin diseases other than AD, or history of other significant skin condition that could interfere with study assessments.
  • MAD: History or ongoing allergy/hypersensitivity or history, or history of hypersensitivity to biological drugs.
  • MAD: Recent receipt of immunoglobulin or blood products.
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  • MAD: Recent treatment with protocol-specified investigational treatments, or any prior treatment with dupilumab, tralokinumab, lebrikizumab, nemolizumab, or other protocol-specified drugs.
  • MAD: AD with recent ocular involvement requiring chronic ocular corticosteroid treatment.
  • MAD: Chronic pruritis due to conditions other than AD.
  • MAD: Acute AD superinfection, recent superficial skin infection, or other chronic/acute infection requiring protocol-defined treatments.
  • MAD: Recent use of sedating antihistimines, systemic corticosteroids, cytotoxic treatments, other immunosuppressive/immunomodulating agents, and other protocol-specified prohibited medications.
  • MAD: Recent topical corticosteroid or prescription moisturizer use.
  • Note: Other protocol-defined Exclusion criteria apply.

Trial locations and contacts

15 sites in 4 countries.

15 sites in 4 countries

United States6 sites
  • First OC Dermatology Research

    Fountain Valley, California, 92708

  • California Clinical Trials Medical Group (CCTMG) managed by Parexel

    Glendale, California, 91206

  • Sadick Research Group

    New York, New York, 10075

  • Paddington Testing Co.

    Philadelphia, Pennsylvania, 19103

  • TCR Medical Corporation

    San Diego, California, 92123

  • D&H Tamarac Research Center

    Tamarac, Florida, 33321

Other trials in United States

Poland4 sites
  • COPERNICUS Podmiot Leczniczy Sp. z o.o., Szpital Sw. Wojciecha

    Gdansk, 80-462

  • Uniwersytecki Szpital Kliniczny im. F.Chopina w Rzeszowie

    Rzeszów, 35-055

  • Panstwowy Instytut Medyczny Ministerstwa Spraw Wewnetrznych

    Warsaw, 02-507

  • Klinika Ambroziak Dermatologia

    Warsaw, 02-953

Other trials in Poland

Germany3 sites
  • Universitätsklinikum Carl Gustav Carus

    Dresden, Saxony, 01307

  • UK-SH - Lübeck

    Lübeck, Schleswig-Holstein, 23538

  • Universitätsmedizin Mainz

    Mainz, Hesse, 55131

Other trials in Germany

Canada2 sites
  • DermEffects

    London, Ontario, N6H5L5

  • Centre de Recherche Saint-Louis

    Québec, G1W4R4

Other trials in Canada

About this study

Official title: A Randomized, Double-blind, Placebo-controlled, Single- and Multiple-ascending Dose Study to Evaluate the Safety, Tolerability, Pharmacokinetics, Immunogenicity, Pharmacodynamics and Exploratory Clinical Activity of NM26-2198 in Healthy Volunteers and in Adult Patients With Atopic Dermatitis

This is a randomized, double-blind, placebo-controlled, single- and multiple ascending dose study of subcutaneous (SC) administration of NM26-2198 in healthy volunteers and adult patients with moderate to-severe AD to evaluate the safety, tolerability, pharmacokinetics (PK), and immunogenicity of single (SAD) and multiple doses (MAD) of NM26-2198.

Being tested
NM26-2198, Placebo
Medical subject headings
Dermatitis, Atopic

What participants receive

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

  • NM26-2198Biological

    IL-4R/IL-31 bispecific antibody for subcutaneous administration

  • PlaceboOther

    Placebo for NM26-2198

Study groups in NCT05859724
Study groupRoleWhat they receive
PlaceboPlacebo comparatorPlacebo (for NM26-2198) for subcutaneous (SC) injection in healthy volunteers (HVs) on Day 1 (SAD Cohorts) and on Days 1, 8, 15, and 22 (MAD Cohorts)
Receives: Other: Placebo
NM26-2198ExperimentalNM26-2198 10mg, 50mg, 150mg, 300mg, 400mg, 600mg, and 900mg for SC injection in HVs on Day 1 (SAD Part A); NM26-2198 150mg and 300mg for SC injection in patients with AD on Days 1, 8, 15, and 22 (MAD Part B); NM26-2198 150mg and 300mg for SC injection in HVs on Days 1, 8, 15, and 22 (MAD Part C)
Receives: Biological: NM26-2198

What is being measured

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

  1. Percentage of participants with Treatment Emergent Adverse Events (TEAEs) [SAD]

    TEAEs defined as AEs and SAEs developing or worsening during treatment period (time from the first dose of study drug up to the end of study visit [Day 57 in SAD]), and includes findings from vital signs, electrocardiogram (ECG), clinical laboratory tests, physical examinations, and injection site evaluations.

    Measured: First dose through end of study (Day 57)

  2. Percentage of participants with Treatment Emergent Adverse Events (TEAEs) [MAD]

    TEAEs defined as AEs and SAEs developing or worsening during treatment period (time from the first dose of study drug up to the end of study visit [Day 85 in MAD]), and includes findings from vital signs, electrocardiogram (ECG), clinical laboratory tests, physical examinations, and injection site evaluations.

    Measured: First dose through end of study (Day 85)

Secondary outcomes (31)
  1. Pharmacokinetics of NM26-2198: Peak Concentration (Cmax) [SAD]

    Mean maximum concentration of NM26-2198 after single dose administration in healthy subjects.

    Measured: Pre-dose on Day 1 through Day 57

  2. Pharmacokinetics of NM26-2198: Peak Concentration (Cmax) [MAD]

    Mean maximum concentration of NM26-2198 after multiple dose administrations in healthy volunteers and in patients with AD.

    Measured: Pre-dose on Day 1 through Day 85

  3. Pharmacokinetics of NM26-2198: Trough Concentration (Ctrough) [MAD]

    Mean trough concentrations of NM26-2198 with multiple dose administrations in healthy volunteers and in patients with AD.

    Measured: Pre-dose on Day 1 through Day 85

  4. Pharmacokinetics of NM26-2198: Time of Peak Concentration (Tmax) [SAD]

    Mean time of maximum concentration of NM26-2198 after single dose administration in healthy subjects.

    Measured: Pre-dose on Day 1 through Day 57

  5. Pharmacokinetics of NM26-2198: Time of Peak Concentration (Tmax) [MAD]

    Mean time of maximum concentration of NM26-2198 after multiple dose administrations in healthy volunteers and in patients with AD.

    Measured: Pre-dose on Day 1 through Day 85

  6. Pharmacokinetics of NM26-2198: Last Area Under the Curve (AUClast) [SAD]

    Mean area under the curve from the time of dosing to the last measurable concentration of NM26-2198 after single dose administration in healthy subjects.

    Measured: Pre-dose on Day 1 through Day 57

  7. Pharmacokinetics of NM26-2198: Last Area Under the Curve (AUClast) [MAD]

    Mean area under the curve from the time of dosing to the last measurable concentration of NM26-2198 after multiple dose administrations in healthy volunteers and in patients with AD.

    Measured: Pre-dose on Day 1 through Day 85

  8. Pharmacokinetics of NM26-2198: Area Under the Curve During the Dosing Interval (AUCtau) [SAD]

    Mean area under concentration-time curve over dosing interval of NM26-2198 after single dose administration in healthy subjects.

    Measured: Pre-dose on Day 1 through Day 7

  9. Pharmacokinetics of NM26-2198: Area Under the Curve During the Dosing Interval (AUCtau) [MAD]

    Mean area under concentration-time curve over dosing interval of NM26-2198 after multiple dose administrations in healthy volunteers and in patients with AD.

    Measured: Pre-dose on Day 1 through Day 29

  10. Pharmacokinetics of NM26-2198: Estimated Total Exposure (AUCinf) [SAD]

    Mean estimated total exposure to NM26-2198 after single dose administration in healthy subjects.

    Measured: Pre-dose on Day 1 through Day 57

  11. Pharmacokinetics of NM26-2198: Estimated Total Exposure (AUCinf) [MAD]

    Mean estimated total exposure to NM26-2198 after multiple dose administrations in healthy volunteers and in patients with AD.

    Measured: Pre-dose on Day 1 through Day 85

  12. Pharmacokinetics of NM26-2198: Time-Averaged Concentration (AUC%extrap) [SAD]

    Mean time-averaged concentration of NM26-2198 after single dose administration in healthy subjects.

    Measured: Pre-dose on Day 1 through Day 57

  13. Pharmacokinetics of NM26-2198: Time-Averaged Concentration (AUC%extrap) [MAD]

    Mean time-averaged concentration of NM26-2198 after multiple dose administrations in healthy volunteers and in patients with AD.

    Measured: Pre-dose on Day 1 through Day 85

  14. Pharmacokinetics of NM26-2198: Time of last quantifiable concentration (tlast) [SAD]

    Mean estimated time to last quantificable concentration of NM26-2198 after single dose administration in healthy subjects.

    Measured: Pre-dose on Day 1 through Day 57

  15. Pharmacokinetics of NM26-2198: Time of last quantifiable concentration (tlast) [MAD]

    Mean estimated time to last quantificable concentration of NM26-2198 after multiple dose administration in healthy volunteers and in patients with AD.

    Measured: Pre-dose on Day 1 through Day 85

  16. Pharmacokinetics of NM26-2198: Terminal Elimination Rate (λz) [SAD]

    Mean terminal elimination rate of NM26-2198 after single dose administrations in healthy subjects.

    Measured: Pre-dose on Day 1 through Day 57

  17. Pharmacokinetics of NM26-2198: Terminal Elimination Rate (λz) [MAD]

    Mean terminal elimination rate of NM26-2198 after multiple dose administrations in healthy volunteers and in patients with AD.

    Measured: Pre-dose on Day 1 through Day 85

  18. Pharmacokinetics of NM26-2198: Terminal elimination half-life (t1/2) [SAD]

    Mean terminal elimination half-life of NM26-2198 after single dose administration in healthy subjects.

    Measured: Pre-dose on Day 1 through Day 57

  19. Pharmacokinetics of NM26-2198: Terminal elimination half-life (t1/2) [MAD]

    Mean terminal elimination half-life of NM26-2198 after multiple dose administrations in healthy volunteers and in patients with AD.

    Measured: Pre-dose on Day 1 through Day 85

  20. Pharmacokinetics of NM26-2198: Total body clearance (CL/F) [SAD]

    Mean total body clearance of NM26-2198 after single dose administration in healthy subjects.

    Measured: Day 1

  21. Pharmacokinetics of NM26-2198: Total body clearance (CL/F) [MAD]

    Mean total body clearance of NM26-2198 after multiple dose administrations in healthy volunteers and in patients with AD.

    Measured: Day 1 and Day 22

  22. Pharmacokinetics of NM26-2198: Apparent volume of distribution (Vz/F) [SAD]

    Mean apparent volume of distribution of NM26-2198 after single dose administrations in healthy subjects.

    Measured: Day 1

  23. Pharmacokinetics of NM26-2198: Apparent volume of distribution (Vz/F) [MAD]

    Mean apparent volume of distribution of NM26-2198 after multiple dose administrations in healthy volunteers and in patients with AD.

    Measured: Day 1 and Day 22

  24. Pharmacokinetics of NM26-2198: Accumulation ratio of last dose Cmax (Racc,cmax) [MAD]

    Mean accumulation ratio of last dose Cmax of NM26-2198 after multiple dose administrations in healthy volunteers and in patients with AD.

    Measured: Day 1 through Day 22

  25. Pharmacokinetics of NM26-2198: Accumulation ratio of last dose AUCtau (Racc,AUCtau) [MAD]

    Mean accumulation ratio of last dose AUCtau of NM26-2198 after multiple dose administrations in healthy volunteers and in patients with AD.

    Measured: Day 1 through Day 22

  26. Percentage of subjects developing treatment-emergent anti-drug antibodies (ADAs) [SAD]

    Measured: Pre-dose on Day 1 through Day 57

  27. Percentage of subjects developing treatment-emergent anti-drug antibodies (ADAs) [MAD]

    Measured: Pre-dose on Day 1 through Day 85

  28. Percentage of subjects developing treatment-enhanced anti-drug antibodies (ADAs) [SAD]

    Measured: Pre-dose on Day 1 through Day 57

  29. Percentage of subjects developing treatment-enhanced anti-drug antibodies (ADAs) [MAD]

    Measured: Pre-dose on Day 1 through Day 85

  30. Mean ADA titers [SAD]

    Measured: Pre-dose on Day 1 through Day 57

  31. Mean ADA titers [MAD]

    Measured: Pre-dose on Day 1 through Day 85

Timeline

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

  1. First posted16 May 2023
  2. Study start10 May 2023
  3. Primary completion1 Oct 2024
  4. Study completion17 Oct 2024

Why it stopped: Asset acquisition by Johnson \& Johnson. Minimum study objectives necessary to inform safety, tolerability, and dose selection for Phase 2 dose-ranging evaluation of NM26-2198 were achieved, with full completion of all healthy volunteer cohorts.

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 1
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Sequential
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
126 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05859724
Sponsor's protocol ID
NB-NM026-2198-101
Other IDs
2023-503577-38, 2023
Status last verified
Jul 2026
First submitted
5 May 2023
Last updated
6 Jul 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing NM26-2198 in people with Atopic Dermatitis, run by Yellow Jersey Therapeutics AG at 15 sites in 4 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 11 inclusion and 13 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 6 Jul 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 15 sites in United States, Poland, Germany, Canada. 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 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

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

Are results available for this study?

The study was stopped early (reason given: Asset acquisition by Johnson \& Johnson. Minimum study objectives necessary to inform safety, tolerability, and dose selection for Phase 2 dose-ranging evaluation of NM26-2198 were achieved, with full completion of all healthy volunteer cohorts.). Results are not available in the source record.

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?

Percentage of participants with Treatment Emergent Adverse Events (TEAEs) [SAD] (time frame: First dose through end of study (Day 57)). 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?
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 6 Jul 2026.

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