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A Study to Investigate the Efficacy and Safety of Alpha1H as a Neoadjuvant Therapy in Participants With Low- to Intermediate-Risk/Low-Grade Papillary Non-Muscle Invasive Bladder Cancer

31 août 2026 mis à jour par: Hamlet Pharma AB

A Randomized Phase III Study to Investigate the Efficacy and Safety of Alpha1H as a Neoadjuvant Therapy in Participants With Low- to Intermediate-Risk/Low-Grade Papillary Non-Muscle Invasive Bladder Cancer

The goal of this clinical trial is to learn if the drug Alpha1H works to treat low-to-intermediate risk non-muscle-invasive bladder cancer in adults. It will also learn about the safety of drug Alpha1H.

The main questions it aims to answer are:

  • Does giving drug Alpha1H before surgery lower the risk of cancer returning or worsening compared to standard care alone?
  • Is drug Alpha1H safe and well-tolerated by participants? Researchers will compare participants receiving drug Alpha1H before standard surgery to participants receiving standard care alone to see if drug Alpha1H lowers the risk of cancer returning or progressing.

Participants will:

  • Be randomly assigned to receive either drug Alpha1H before surgery or standard care alone.
  • Receive drug Alpha1H directly into the bladder 6 times over about 1 month if assigned to the Alpha1H group.
  • Hold the liquid in the bladder for up to 2 hours during each visit.
  • Undergo standard surgery through the urethra (TURBT) to remove remaining tumor tissue.
  • Visit the clinic regularly for follow-up checkups (including bladder examinations and urine tests) to check if the cancer returns.
  • Fill out questionnaires about their quality of life.

Aperçu de l'étude

Statut

Pas encore de recrutement

Les conditions

Intervention / Traitement

Type d'étude

Interventionnel

Inscription (Estimé)

194

Phase

  • Phase 3

Contacts et emplacements

Cette section fournit les coordonnées de ceux qui mènent l'étude et des informations sur le lieu où cette étude est menée.

Coordonnées de l'étude

Sauvegarde des contacts de l'étude

Lieux d'étude

  • Tchéquie
      • Prague, Tchéquie, 15000
        • Fakultní nemocnice Motol a Homolka

Critères de participation

Les chercheurs recherchent des personnes qui correspondent à une certaine description, appelée critères d'éligibilité. Certains exemples de ces critères sont l'état de santé général d'une personne ou des traitements antérieurs.

Critère d'éligibilité

Âges éligibles pour étudier

  • Adulte
  • Adulte plus âgé

Accepte les volontaires sains

Non

La description

Inclusion Criteria:

  • Signed and dated informed consent.
  • Low- or intermediate-risk non-muscle-invasive bladder cancer (NMIBC) meeting one of the following definitions:
  • Low-risk NMIBC: Primary, solitary, Ta, low-grade, 0.5 cm to 3 cm.
  • Intermediate-risk NMIBC (low-to-intermediate risk subgroup per IBCG classification):
  • Primary multifocal (<10 lesions), Ta, low-grade, 0.5 cm to 3 cm;
  • Recurrent solitary, Ta, low-grade, 0.5 cm to 3 cm; or
  • Recurrent multifocal (<10 lesions), Ta, low-grade, >1 year after previous recurrence.
  • Men and women aged 18 years or older.
  • Negative pregnancy test at screening for women of childbearing potential.
  • Women of childbearing potential must agree to use highly effective contraception methods throughout study participation; men of childbearing potential must refrain from donating sperm during the study.
  • Ability to retain bladder contents for 2 hours.

Exclusion Criteria:

  • Patient with non-papillary tumor appearance at the time of initial cystoscopy.
  • Previous history of T1 or high-grade disease in recurrent tumors.
  • Patients with T1 or high-grade non-muscle invasive papillary bladder cancer (NMIBC).
  • Previous intravesical BCG immunotherapy.
  • Patients with any other cancer diagnosis within the last 5 years (except for skin basalioma).
  • Acute urinary tract infection requiring antibiotic treatment.
  • Prior radiotherapy or systemic chemotherapy.
  • WHO performance status of 3 or 4.
  • Any other investigational agent or non-marketed product within one month prior to Visit 1 and during the trial.
  • Known active HIV infection, defined as detectable HIV viral load at screening.
  • Active hepatitis B virus (HBV) infection, defined as hepatitis B surface antigen (HBsAg) positivity with detectable HBV DNA at screening.
  • Active hepatitis C virus (HCV) infection, defined as anti-HCV antibody positivity with detectable HCV RNA at screening in a patient not on stable antiviral treatment.
  • Any concurrent illness that may render a participant ineligible or limit compliance with study requirements.
  • Previously enrolled in this trial.

Plan d'étude

Cette section fournit des détails sur le plan d'étude, y compris la façon dont l'étude est conçue et ce que l'étude mesure.

Comment l'étude est-elle conçue ?

Détails de conception

  • Objectif principal: Traitement
  • Répartition: Randomisé
  • Modèle interventionnel: Affectation parallèle
  • Masquage: Aucun (étiquette ouverte)

Armes et Interventions

Groupe de participants / Bras
Intervention / Traitement
Expérimental: Alpha1H
Participants receive 6 intravesical instillations of Alpha1H over approximately 1 month prior to transurethral resection of bladder tumor (TURBT).
Médicament: Alpha1H
Administered via intravesical instillation directly into the urinary bladder. Participants in the experimental group receive a total of 6 instillations on Days 1, 3, 5, 8, 15, and 22 over approximately 1 month prior to TURBT. During each treatment, participants are asked to retain the solution in the bladder for up to 2 hours.
Procédure: Transurethral Resection of Bladder Tumor (TURBT)
Standard endoscopic surgical procedure performed through the urethra to resect and remove papillary bladder tumor tissue. Performed approximately 30 days after study entry (on Visit 8). Resected tumor tissue is collected for histopathology and central analysis.
Médicament: Intravesical Chemotherapy
A single early intravesical instillation of standard-of-care chemotherapy (epirubicin, mitomycin, or gemcitabine) administered into the urinary bladder shortly following TURBT surgery in accordance with local institutional guidelines.
Comparateur actif: Standard of Care
Participants receive standard of care consisting of transurethral resection of bladder tumor (TURBT) followed by a single early intravesical instillation of standard chemotherapy.
Procédure: Transurethral Resection of Bladder Tumor (TURBT)
Standard endoscopic surgical procedure performed through the urethra to resect and remove papillary bladder tumor tissue. Performed approximately 30 days after study entry (on Visit 8). Resected tumor tissue is collected for histopathology and central analysis.
Médicament: Intravesical Chemotherapy
A single early intravesical instillation of standard-of-care chemotherapy (epirubicin, mitomycin, or gemcitabine) administered into the urinary bladder shortly following TURBT surgery in accordance with local institutional guidelines.

Que mesure l'étude ?

Principaux critères de jugement

Mesure des résultats
Délai
Event-Free Survival (EFS)
Délai: From randomization until the occurrence of an EFS event or study completion, assessed at 3, 6, 9 (optional), and 12 months post-randomization, and every 6 months thereafter for up to 3 years.
From randomization until the occurrence of an EFS event or study completion, assessed at 3, 6, 9 (optional), and 12 months post-randomization, and every 6 months thereafter for up to 3 years.

Mesures de résultats secondaires

Mesure des résultats
Description de la mesure
Délai
Complete Response (CR) Rate
Délai: Day 30 (±5 days), prior to TURBT
Day 30 (±5 days), prior to TURBT
Overall Survival (OS)
Délai: From randomization through study completion (assessed at 3, 6, 9 [optional], and 12 months, and every 6 months thereafter for up to 3 years).
From randomization through study completion (assessed at 3, 6, 9 [optional], and 12 months, and every 6 months thereafter for up to 3 years).
Tumor Response (Morphological and Cellular)
Délai: Baseline (Day 1) to Day 30 (±5 days)
Assessed as: (1) change in papillary tumor size (% reduction from baseline); (2) tumor cell shedding in urine (cells/mL); (3) apoptosis in shed cells (% TUNEL-positive cells); (4) Alpha1H uptake in shed cells (% Alpha1H-positive cells). Each parameter reported separately.
Baseline (Day 1) to Day 30 (±5 days)
Tumor Gene Expression
Délai: Baseline (Day 1) to Day 30 (±5 days)
Assessed by RNA sequencing (whole transcriptome) in tumor tissue and urine RNA. Reported as number of differentially expressed cancer-related genes and pathways between the Alpha1H and SOC arms.
Baseline (Day 1) to Day 30 (±5 days)
Urinary Biomarkers and Immune Response
Délai: Day 1, 3, 5, 8, 15, and 22 (pre- and post-instillation), and Day 30 (±5 days)
Assessed by proteomic profiling of urine samples. Reported as change in concentration (pg/mL) of cytokines, chemokines, and interferons between pre- and post-instillation samples, compared between the Alpha1H and SOC arms.
Day 1, 3, 5, 8, 15, and 22 (pre- and post-instillation), and Day 30 (±5 days)
Incidence and Severity of Adverse Events (AEs)
Délai: From Visit 1 (Screening) through Visit 9 (Day 40/50) and follow-up period (up to 3 years)
From Visit 1 (Screening) through Visit 9 (Day 40/50) and follow-up period (up to 3 years)
Change in Quality of Life (QoL) as Assessed by the QLQ-NMIBC24 Questionnaire
Délai: From Visit 1 (Screening) through follow-up visits (up to 3 years)
Quality of life will be assessed using the European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire - Non-Muscle-Invasive Bladder Cancer Module (EORTC QLQ-NMIBC24), a 24-item, disease-specific patient-reported outcome instrument. Each domain score is linearly transformed to range from 0 to 100. On functional scales (e.g., sexual function), higher scores indicate better functioning; on symptom-related scales (e.g., urinary symptoms, future perspective), higher scores indicate greater symptom burden. Scores are calculated per the EORTC scoring manual.
From Visit 1 (Screening) through follow-up visits (up to 3 years)

Collaborateurs et enquêteurs

C'est ici que vous trouverez les personnes et les organisations impliquées dans cette étude.

Parrainer

Hamlet Pharma AB

Dates d'enregistrement des études

Ces dates suivent la progression des dossiers d'étude et des soumissions de résultats sommaires à ClinicalTrials.gov. Les dossiers d'étude et les résultats rapportés sont examinés par la Bibliothèque nationale de médecine (NLM) pour s'assurer qu'ils répondent à des normes de contrôle de qualité spécifiques avant d'être publiés sur le site Web public.

Dates principales de l'étude

Début de l'étude (Estimé)

1 septembre 2026

Achèvement primaire (Estimé)

1 juillet 2029

Achèvement de l'étude (Estimé)

1 juillet 2029

Dates d'inscription aux études

Première soumission

26 août 2026

Première soumission répondant aux critères de contrôle qualité

31 août 2026

Première publication (Réel)

4 septembre 2026

Mises à jour des dossiers d'étude

Dernière mise à jour publiée (Réel)

4 septembre 2026

Dernière mise à jour soumise répondant aux critères de contrôle qualité

31 août 2026

Dernière vérification

1 août 2026

Plus d'information

Termes liés à cette étude

Mots clés

Termes MeSH pertinents supplémentaires

Autres numéros d'identification d'étude

  • HP003-001
  • 2026-525531-16-00 (Ctis)

Plan pour les données individuelles des participants (IPD)

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INDÉCIS

Informations sur les médicaments et les dispositifs, documents d'étude

Étudie un produit pharmaceutique réglementé par la FDA américaine

Oui

Étudie un produit d'appareil réglementé par la FDA américaine

Non

Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .

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