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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 luglio 2026 aggiornato da: 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.

Panoramica dello studio

Stato

Reclutamento

Tipo di studio

Interventistico

Iscrizione (Stimato)

510

Fase

  • Fase 3

Contatti e Sedi

Questa sezione fornisce i recapiti di coloro che conducono lo studio e informazioni su dove viene condotto lo studio.

Contatto studio

Luoghi di studio

    • Florida
      • St. Petersburg, Florida, Stati Uniti, 33714
        • Reclutamento
        • Nektar Investigative Site

Criteri di partecipazione

I ricercatori cercano persone che corrispondano a una certa descrizione, chiamata criteri di ammissibilità. Alcuni esempi di questi criteri sono le condizioni generali di salute di una persona o trattamenti precedenti.

Criteri di ammissibilità

Età idonea allo studio

  • Bambino
  • Adulto
  • Adulto più anziano

Accetta volontari sani

No

Descrizione

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

Piano di studio

Questa sezione fornisce i dettagli del piano di studio, compreso il modo in cui lo studio è progettato e ciò che lo studio sta misurando.

Come è strutturato lo studio?

Dettagli di progettazione

  • Scopo principale: Trattamento
  • Assegnazione: Randomizzato
  • Modello interventistico: Assegnazione parallela
  • Mascheramento: Quadruplicare

Armi e interventi

Gruppo di partecipanti / Arm
Intervento / Trattamento
Sperimentale: Blinded Induction Period: Rezpegaldesleukin every 2 weeks
Rezpegaldesleukin every 2 weeks during the induction period
Forma farmaceutica: Soluzione iniettabile Via di somministrazione: sottocutanea
Altri nomi:
  • NKTR-358
Comparatore placebo: Blinded Induction Period: Placebo
Placebo every 2 weeks during the induction period
Forma farmaceutica: Soluzione iniettabile Via di somministrazione: sottocutanea
Sperimentale: Blinded Maintenance Period: Rezpegaldesleukin every 4 weeks
Rezpegaldesleukin every 4 weeks during the maintenance period
Forma farmaceutica: Soluzione iniettabile Via di somministrazione: sottocutanea
Altri nomi:
  • NKTR-358
Sperimentale: Blinded Maintenance Period: Rezpegaldesleukin every 12 weeks
Rezpegaldesleukin every 12 weeks during the maintenance period
Forma farmaceutica: Soluzione iniettabile Via di somministrazione: sottocutanea
Altri nomi:
  • NKTR-358
Comparatore placebo: Blinded Maintenance Period: Placebo
Placebo every 4 weeks during the maintenance period
Forma farmaceutica: Soluzione iniettabile Via di somministrazione: sottocutanea
Sperimentale: Open-Label Escape
Rezpegaldesleukin at a frequency determined by the investigator during the open-label escape
Forma farmaceutica: Soluzione iniettabile Via di somministrazione: sottocutanea
Altri nomi:
  • NKTR-358

Cosa sta misurando lo studio?

Misure di risultato primarie

Misura del risultato
Misura Descrizione
Lasso di tempo
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
Lasso di tempo: 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
Lasso di tempo: 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)
Lasso di tempo: 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

Misure di risultato secondarie

Misura del risultato
Misura Descrizione
Lasso di tempo
US only: Number of participants with a ≥ 75% reduction in EASI score from baseline at Week 24 (EASI-75)
Lasso di tempo: 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)
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: 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)
Lasso di tempo: Through participant study completion, approximately Week 56
Through participant study completion, approximately Week 56
Number of participants with treatment emergent serious adverse events
Lasso di tempo: Through participant study completion, approximately Week 56
Through participant study completion, approximately Week 56
Number of participants with treatment related serious adverse events
Lasso di tempo: 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
Lasso di tempo: 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
Lasso di tempo: Through participant study completion, approximately Week 56
Through participant study completion, approximately Week 56
Number of participants with TEAEs leading to treatment discontinuation
Lasso di tempo: Through participant study completion, approximately Week 56
Through participant study completion, approximately Week 56
Number of participants with TEAEs leading to dose hold
Lasso di tempo: Through participant study completion, approximately Week 56
Through participant study completion, approximately Week 56
Number of participants with TEAEs leading to dose modifications
Lasso di tempo: Through participant study completion, approximately Week 56
Through participant study completion, approximately Week 56

Collaboratori e investigatori

Qui è dove troverai le persone e le organizzazioni coinvolte in questo studio.

Studiare le date dei record

Queste date tengono traccia dell'avanzamento della registrazione dello studio e dell'invio dei risultati di sintesi a ClinicalTrials.gov. I record degli studi e i risultati riportati vengono esaminati dalla National Library of Medicine (NLM) per assicurarsi che soddisfino specifici standard di controllo della qualità prima di essere pubblicati sul sito Web pubblico.

Studia le date principali

Inizio studio (Stimato)

1 luglio 2026

Completamento primario (Stimato)

1 maggio 2028

Completamento dello studio (Stimato)

1 dicembre 2028

Date di iscrizione allo studio

Primo inviato

2 luglio 2026

Primo inviato che soddisfa i criteri di controllo qualità

2 luglio 2026

Primo Inserito (Effettivo)

8 luglio 2026

Aggiornamenti dei record di studio

Ultimo aggiornamento pubblicato (Effettivo)

8 luglio 2026

Ultimo aggiornamento inviato che soddisfa i criteri QC

2 luglio 2026

Ultimo verificato

1 luglio 2026

Maggiori informazioni

Termini relativi a questo studio

Altri numeri di identificazione dello studio

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

Piano per i dati dei singoli partecipanti (IPD)

Hai intenzione di condividere i dati dei singoli partecipanti (IPD)?

NO

Informazioni su farmaci e dispositivi, documenti di studio

Studia un prodotto farmaceutico regolamentato dalla FDA degli Stati Uniti

Studia un dispositivo regolamentato dalla FDA degli Stati Uniti

No

Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .

Prove cliniche su Rezpegaldesleukin

3
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