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A Phase 3 Study of Rezpegaldesleukin (NKTR-358) for Patients ≥ 12 Years of Age With Moderate-to-Severe Atopic Dermatitis (ZENITH AD-1)

2. Juli 2026 aktualisiert von: Nektar Therapeutics

A Phase 3, Randomized, Double-Blind, Parallel-Group, Placebo-Controlled Study to Evaluate the Efficacy and Safety of Rezpegaldesleukin (NKTR-358) Monotherapy in the Treatment of Patients ≥ 12 Years of Age With Moderate-to-Severe Atopic Dermatitis

This is an interventional, randomized, parallel group, treatment, Phase 3, double blind study to assess the effect of Rezpegaldesleukin in participants 12 years of age or older with moderate to severe atopic dermatitis, as compared to placebo.

The estimated participant overall duration is approximately 15 months.

Studienübersicht

Studientyp

Interventionell

Einschreibung (Geschätzt)

510

Phase

  • Phase 3

Kontakte und Standorte

Dieser Abschnitt enthält die Kontaktdaten derjenigen, die die Studie durchführen, und Informationen darüber, wo diese Studie durchgeführt wird.

Studienkontakt

Studienorte

    • Florida
      • St. Petersburg, Florida, Vereinigte Staaten, 33714
        • Rekrutierung
        • Nektar Investigative Site

Teilnahmekriterien

Forscher suchen nach Personen, die einer bestimmten Beschreibung entsprechen, die als Auswahlkriterien bezeichnet werden. Einige Beispiele für diese Kriterien sind der allgemeine Gesundheitszustand einer Person oder frühere Behandlungen.

Zulassungskriterien

Studienberechtigtes Alter

  • Kind
  • Erwachsene
  • Älterer Erwachsener

Akzeptiert gesunde Freiwillige

Nein

Beschreibung

Inclusion Criteria:

  • Male or female patients, ≥ 12 years of age on the day of signing the informed consent form and weighing ≥ 40 kg prior to randomization at Baseline
  • Chronic atopic dermatitis (AD) defined as onset of AD signs and symptoms ≥ 12 months prior to Screening as determined by the Investigator through patient interview and/or review of medical history at the Screening Visit
  • Patients must meet the following AD severity criteria:
  • IGA score ≥ 3 (scale of 0 to 4) at Screening and Baseline
  • ≥ 10.0% of BSA involvement at Screening and Baseline
  • EASI ≥ 16.0 at Screening and Baseline
  • Are candidates for systemic therapy and have history, documented by a physician and/or the Investigator, of inadequate response to existing topical medications within 6 months preceding Screening, or history of intolerance to a topical therapy
  • Provide written, informed consent to participate in the study and follow the study procedures, including compliance with the use of highly effective contraceptives

Exclusion Criteria:

  • Are currently experiencing or have a history of concomitant skin conditions other than AD, including skin infection in the area affected by the patient's AD that requires treatment with systemic antimicrobial therapy
  • Are currently experiencing or have a history of unstable course of AD
  • History of chronic idiopathic urticaria at any time or urticaria from other causes within 4 weeks prior to randomization at the Baseline Visit.
  • Have a history of TCS use suggestive of a high risk for topical corticosteroid (TCS) withdrawal
  • Have received any of the following treatments at any time before Screening: aldesleukin; investigational IL-2 analog; systemic biologic; oral JAKi; or any prior investigational agent for AD
  • Have a current or recent acute, active infection

Studienplan

Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.

Wie ist die Studie aufgebaut?

Designdetails

  • Hauptzweck: Behandlung
  • Zuteilung: Zufällig
  • Interventionsmodell: Parallele Zuordnung
  • Maskierung: Vervierfachen

Waffen und Interventionen

Teilnehmergruppe / Arm
Intervention / Behandlung
Experimental: Blinded Induction Period: Rezpegaldesleukin every 2 weeks
Rezpegaldesleukin every 2 weeks during the induction period
Darreichungsform: Injektionslösung Verabreichungsweg: subkutan
Andere Namen:
  • NKTR-358
Placebo-Komparator: Blinded Induction Period: Placebo
Placebo every 2 weeks during the induction period
Darreichungsform: Injektionslösung Verabreichungsweg: subkutan
Experimental: Blinded Maintenance Period: Rezpegaldesleukin every 4 weeks
Rezpegaldesleukin every 4 weeks during the maintenance period
Darreichungsform: Injektionslösung Verabreichungsweg: subkutan
Andere Namen:
  • NKTR-358
Experimental: Blinded Maintenance Period: Rezpegaldesleukin every 12 weeks
Rezpegaldesleukin every 12 weeks during the maintenance period
Darreichungsform: Injektionslösung Verabreichungsweg: subkutan
Andere Namen:
  • NKTR-358
Placebo-Komparator: Blinded Maintenance Period: Placebo
Placebo every 4 weeks during the maintenance period
Darreichungsform: Injektionslösung Verabreichungsweg: subkutan
Experimental: Open-Label Escape
Rezpegaldesleukin at a frequency determined by the investigator during the open-label escape
Darreichungsform: Injektionslösung Verabreichungsweg: subkutan
Andere Namen:
  • NKTR-358

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
US only: Number of participants with an Investigator's Global Assessment (IGA) score of 0 or 1 and reduction ≥ 2 points from baseline at Week 24
Zeitfenster: Week 0 and Week 24
The IGA scale ranges from 0 to 4, with higher score indicating more severe disease.
Week 0 and Week 24
Non-US regions only: Number of participants with an Investigator's Global Assessment (IGA) score of 0 or 1 at Week 24
Zeitfenster: Week 0 and Week 24
The IGA scale ranges from 0 to 4, with higher score indicating more severe disease.
Week 0 and Week 24
Non-US regions only: Number of participants with a ≥ 75% reduction in Eczema Area and Severity Index (EASI) score from baseline at Week 24 (EASI-75)
Zeitfenster: Week 0 and Week 24
The EASI scores range from 0 to 72, with higher scores indicating more severe atopic dermatitis.
Week 0 and Week 24

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
US only: Number of participants with a ≥ 75% reduction in EASI score from baseline at Week 24 (EASI-75)
Zeitfenster: Week 0 and Week 24
The EASI scores range from 0 to 72, with higher scores indicating more severe atopic dermatitis.
Week 0 and Week 24
Number of participants with a ≥ 90% reduction in EASI score from baseline at Week 24 (EASI-90)
Zeitfenster: Week 0 and Week 24
The EASI scores range from 0 to 72, with higher scores indicating more severe atopic dermatitis.
Week 0 and Week 24
Number of participants at week 6 achieving a 4-point or greater improvement in Itch numerical rating scale (NRS) in the subset of participants with a 4-point or greater Itch NRS at baseline
Zeitfenster: Week 0 and Week 6
The itch NRS goes from 0 to 10, with higher score indicating more severe itch.
Week 0 and Week 6
Number of participants at week 24 achieving a 4-point or greater improvement in Itch numerical rating scale (NRS) in the subset of participants with a 4-point or greater Itch NRS at baseline
Zeitfenster: Week 0 and Week 24
The itch NRS goes from 0 to 10, with higher score indicating more severe itch.
Week 0 and Week 24
Number of participants at week 6 achieving a 4-point or greater improvement in Skin Pain numerical rating scale (NRS) in the subset of participants with a 4-point or greater Skin Pain NRS at baseline
Zeitfenster: Week 0 and Week 6
The Skin Pain NRS goes from 0 to 10, with higher score indicating more severe pain.
Week 0 and Week 6
Number of participants at week 24 achieving a 4-point or greater improvement in Skin Pain numerical rating scale (NRS) in the subset of participants with a 4-point or greater Skin Pain NRS at baseline
Zeitfenster: Week 0 and Week 24
The Skin Pain NRS goes from 0 to 10, with higher score indicating more severe pain.
Week 0 and Week 24
Number of participants at week 6 achieving a 1.25-point or greater improvement in Atopic Dermatitis Sleep Scale Question 1 (ADSS Q1) in the subset of participants with a 1.25-point or greater ADSS Q1 at baseline
Zeitfenster: Week 0 and Week 6
The ADSS Q1 goes from 0 to 4, with higher score indicating more difficulty sleeping.
Week 0 and Week 6
Number of participants at week 24 achieving a 1.25-point or greater improvement in ADSS Q1 in the subset of participants with a 1.25-point or greater ADSS Q1 at baseline
Zeitfenster: Week 0 and Week 24
The ADSS Q1 goes from 0 to 4, with higher score indicating more difficulty sleeping.
Week 0 and Week 24
Change in Asthma Control Questionnaire-5 (ACQ-5) score from baseline at Week 24 in the subpopulation of patients with a 0.5-point or greater ACQ-5 at baseline
Zeitfenster: Week 0 and Week 24
The ACQ-5 goes from 0 to 6, with higher score indicating worse asthma control.
Week 0 and Week 24
Number of participants at week 24 achieving a 0.5-point or greater improvement in ACQ-5 in the subset of participants with a 0.5-point or greater ACQ-5 at baseline
Zeitfenster: Week 0 and Week 24
The ACQ-5 goes from 0 to 6, with higher score indicating worse asthma control.
Week 0 and Week 24
Change in Sino-Nasal Outcome Test (SNOT-22) score from baseline at Week 24 in the subpopulation of patients with an 8.9-point or greater SNOT-22 at baseline
Zeitfenster: Week 0 and Week 24
The SNOT-22 scores range from 0 to 110, with a higher score indicating more severe symptoms
Week 0 and Week 24
Number of participants at Week 24 achieving a 8.9-point or greater reduction from baseline in SNOT-22 in the subpopulation of patients with an 8.9-point or greater SNOT-22 at baseline
Zeitfenster: Week 0 and Week 24
The SNOT-22 scores range from 0 to 110, with a higher score indicating more severe symptoms
Week 0 and Week 24
Number of participants at week 24 achieving an Adapted Investigator's Global Assessment (aIGA) response of 0 or 1
Zeitfenster: Week 0 and Week 24
The aIGA scale ranges from 0 to 1, with a lower score indicating improvement in atopic dermatitis.
Week 0 and Week 24
Number of participants with treatment emergent adverse events (TEAEs)
Zeitfenster: Through participant study completion, approximately Week 56
Through participant study completion, approximately Week 56
Number of participants with treatment emergent serious adverse events
Zeitfenster: Through participant study completion, approximately Week 56
Through participant study completion, approximately Week 56
Number of participants with treatment related serious adverse events
Zeitfenster: Through participant study completion, approximately Week 56
Through participant study completion, approximately Week 56
Number of participants with treatment emergent adverse events of special interest
Zeitfenster: Through participant study completion, approximately Week 56
Through participant study completion, approximately Week 56
Number of participants with treatment related adverse events of special interest
Zeitfenster: Through participant study completion, approximately Week 56
Through participant study completion, approximately Week 56
Number of participants with TEAEs leading to treatment discontinuation
Zeitfenster: Through participant study completion, approximately Week 56
Through participant study completion, approximately Week 56
Number of participants with TEAEs leading to dose hold
Zeitfenster: Through participant study completion, approximately Week 56
Through participant study completion, approximately Week 56
Number of participants with TEAEs leading to dose modifications
Zeitfenster: Through participant study completion, approximately Week 56
Through participant study completion, approximately Week 56

Mitarbeiter und Ermittler

Hier finden Sie Personen und Organisationen, die an dieser Studie beteiligt sind.

Studienaufzeichnungsdaten

Diese Daten verfolgen den Fortschritt der Übermittlung von Studienaufzeichnungen und zusammenfassenden Ergebnissen an ClinicalTrials.gov. Studienaufzeichnungen und gemeldete Ergebnisse werden von der National Library of Medicine (NLM) überprüft, um sicherzustellen, dass sie bestimmten Qualitätskontrollstandards entsprechen, bevor sie auf der öffentlichen Website veröffentlicht werden.

Haupttermine studieren

Studienbeginn (Geschätzt)

1. Juli 2026

Primärer Abschluss (Geschätzt)

1. Mai 2028

Studienabschluss (Geschätzt)

1. Dezember 2028

Studienanmeldedaten

Zuerst eingereicht

2. Juli 2026

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

2. Juli 2026

Zuerst gepostet (Tatsächlich)

8. Juli 2026

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

8. Juli 2026

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

2. Juli 2026

Zuletzt verifiziert

1. Juli 2026

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Andere Studien-ID-Nummern

  • 25-358-09
  • 2025-524925-42-00 (Ctis)

Plan für individuelle Teilnehmerdaten (IPD)

Planen Sie, individuelle Teilnehmerdaten (IPD) zu teilen?

NEIN

Arzneimittel- und Geräteinformationen, Studienunterlagen

Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt

Ja

Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt

Nein

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