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Paricalcitol Versus Pirfenidone for Improving Surgical Resectability in Patients With Peritoneal Cancer (RANDY 1A)

28. September 2026 aktualisiert von: Patrick Wagner, MD, FACS

A Randomized Phase II Bayesian Pick-the-Winner Clinical Trial Investigating the Efficacy of Fibrosis-Modulating Agents (Paricalcitol and Pirfenidone) in Improving Surgical Resectability in Patients With Peritoneal Carcinomatosis Ineligible for Definitive Cytoreduction (Randy 1A)

The goal of this clinical trial is to learn if paricalcitol or pirfenidone can help make tumors removable by surgery in adults with peritoneal cancer who are currently unable to have their tumor removed.

The study aims to answer are whether paricalcitol or pirfenidone improve tumor response and tissue healing after 12 weeks of treatment, and which of these two drugs is more effective at helping participants become eligible for surgery. Researchers will compare paricalcitol to pirfenidone to see which drug works better and has a manageable safety profile.

Participants will take either paricalcitol or pirfenidone by mouth every day for 12 weeks while continuing their standard chemotherapy, visit the clinic regularly for checkups and lab tests, keep a daily diary to track their study medication, and undergo a surgical re-evaluation after treatment to see if their tumor can be removed.

Studienübersicht

Status

Noch keine Rekrutierung

Bedingungen

Intervention / Behandlung

Detaillierte Beschreibung

This is a single-center, randomized Phase II clinical trial designed to investigate the efficacy of repurposing fibrosis-modulating agents to improve surgical resectability in patients with peritoneal carcinomatosis. Peritoneal carcinomatosis is characterized by a challenging tumor microenvironment (TME) featuring extensive fibrosis and a high density of cancer-associated fibroblasts (CAFs). These elements create a dense desmoplastic barrier that impedes drug penetration, limits therapeutic efficacy, and frequently renders patients ineligible for definitive surgical cytoreduction.

To overcome these barriers, the trial evaluates two distinct anti-fibrotic agents: paricalcitol, a synthetic Vitamin D receptor agonist that promotes CAF quiescence and stromal remodeling, and pirfenidone, an oral anti-fibrotic agent that inhibits fibrosis by downregulating the TGF-β signaling pathway and collagen synthesis. Eligible participants are randomized in a 1:1 ratio to receive a 12-week course of either oral paricalcitol (2 mcg daily, titratable) or oral pirfenidone (titrated to 801 mg three times daily with food), administered concurrently with their ongoing standard systemic chemotherapy.

Studientyp

Interventionell

Einschreibung (Geschätzt)

74

Phase

  • Phase 2

Kontakte und Standorte

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

Studienkontakt

Studieren Sie die Kontaktsicherung

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

18 Jahre bis 80 Jahre (Erwachsene, Älterer Erwachsener)

Akzeptiert gesunde Freiwillige

Nein

Studienberechtigte Geschlechter

Alle

Beschreibung

Inclusion Criteria:

  • Males or females, age 18 to <81 years at the time of consent
  • Biopsy-proven peritoneal carcinomatosis
  • Documented receipt of at least three months of standard systemic chemotherapy prior to initiation, with persistent disease
  • ECOG Performance Status of 0 or 1
  • Adequate organ function within 14 days prior to anti-fibrotic initiation
  • Negative serum pregnancy test for women of childbearing potential (WOCBP) within 7 days prior to initiation
  • Able to understand and provide written informed consent
  • Willingness and ability to comply with all study procedures

Exclusion Criteria:

  • Patients deemed eligible for definitive cytoreductive surgery

    • Current or recent (within 30 days) use of paricalcitol, pirfenidone, or Vitamin D supplementation above USDA-recommended daily dosage
    • Known allergy or medical contraindication to study drugs
    • Hypersensitivity to any of the study drugs or to any ingredient in the formulation
    • Receipt of any investigational drug within 30 days prior to initiation
    • Active pregnancy or lactation
    • Active smoking
    • Active brain metastases
    • Elevated Vitamin D level (>2x upper limit of normal)
    • Significant comorbidities including abnormal calcium/phosphate, history of serious drug-induced liver injury, severe cardiac conditions, patients with or predisposed to cardiac arrhythmias, or uncontrolled hypertension
    • Concomitant medications that, after review by the study pharmacist(s) and potential dose modification in accordance with prescribing guidelines, still pose an unmanageable drug-drug interaction or unacceptable safety risk with either study drug

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: Keine (Offenes Etikett)

Waffen und Interventionen

Teilnehmergruppe / Arm
Intervention / Behandlung
Experimental: Paricalcitol Arm

Participants receive oral paricalcitol once daily for 12 weeks concurrently with standard systemic chemotherapy.

Oral, 2 mcg once daily for 12 weeks

Experimental: Pirfenidone Arm

Participants receive oral pirfenidone three times daily for 12 weeks (with initial dose titration) concurrently with standard systemic chemotherapy.

Oral, titrated up to 801 mg three times daily (total daily dose: 2403 mg/day) with food for 12 weeks.

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Paricalcitol Efficacy
Zeitfenster: 12 weeks from treatment initiation

Proportion of patients achieving a clinicopathologic response (CPR)

12 weeks from treatment initiation
Pirfenidone Efficacy
Zeitfenster: 12 weeks from treatment initiation

Proportion of patients achieving a clinicopathologic response (CPR)

12 weeks from treatment initiation

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Severity of Treatment-Emergent Adverse Events for Paricalcitol [Safety]
Zeitfenster: 16 weeks from treatment initiation

Maximum severity grade of treatment-emergent adverse events per participant, assessed on a scale from Grade 1 (mild) to Grade 5 (death) according to the Common Terminology Criteria for Adverse Events (CTCAE) version 5.0. Higher grades indicate a more severe outcome.

16 weeks from treatment initiation
Severity of Treatment-Emergent Adverse Events for Pirfenidone [Safety]
Zeitfenster: 16 weeks from treatment initiation

Maximum severity grade of treatment-emergent adverse events per participant, assessed on a scale from Grade 1 (mild) to Grade 5 (death) according to the Common Terminology Criteria for Adverse Events (CTCAE) version 5.0. Higher grades indicate a more severe outcome

16 weeks from treatment initiation
Incidence of Treatment-Emergent Adverse Events for Paricalcitol [Safety
Zeitfenster: 16 weeks from treatment initiation

Number of participants experiencing one or more treatment-emergent adverse events, as graded according to the Common Terminology Criteria for Adverse Events (CTCAE) version 5.0.

16 weeks from treatment initiation
Incidence of Treatment-Emergent Adverse Events for Pirfenidone [Safety]
Zeitfenster: 16 weeks from treatment initiation

Number of participants experiencing one or more treatment-emergent adverse events, as graded according to the Common Terminology Criteria for Adverse Events (CTCAE) version 5.0.

16 weeks from treatment initiation
Patient-Reported Quality of Life Outcomes Using the Medical Outcomes Study 20-Item Short-Form Health Survey (SF-20) for Paricalcitol [Tolerability]
Zeitfenster: 12 weeks

Assessment of patient-reported quality of life outcomes using the SF-20 questionnaire. Each subscale ranges from a minimum score of 0 to a maximum score of 100, where higher scores indicate a better health-related quality of life outcome.

12 weeks
Patient-Reported Quality of Life Outcomes Using the Medical Outcomes Study 20-Item Short-Form Health Survey (SF-20) for Pirfenidone [Tolerability]
Zeitfenster: 12 weeks

Assessment of patient-reported quality of life outcomes using the SF-20 questionnaire. Each subscale ranges from a minimum score of 0 to a maximum score of 100, where higher scores indicate a better health-related quality of life outcome.

12 weeks
Treatment Adherence Evaluated via Study Drug Diaries for Paricalcitol [Feasibility]
Zeitfenster: 12 weeks

Percentage of total prescribed doses taken based on study drug diaries (number of doses taken divided by total expected doses over 12 weeks).

12 weeks
Treatment Adherence Evaluated via Study Drug Diaries for Pirfenidone [Feasibility]
Zeitfenster: 12 weeks

Percentage of total prescribed doses taken based on study drug diaries (number of doses taken divided by total expected doses over 12 weeks).

12 weeks
Molecular Biomarker Analysis of Treatment Response in Research Blood Samples for Paricalcitol [Efficacy]
Zeitfenster: 12 weeks

Evaluation of molecular correlates of treatment response using research blood samples collected at baseline and post-treatment.

12 weeks
Molecular Biomarker Analysis of Treatment Response in Research Blood Samples for Pirfenidone [Efficacy]
Zeitfenster: 12 weeks

Evaluation of molecular correlates of treatment response using research blood samples collected at baseline and post-treatment.

12 weeks
Molecular Biomarker Analysis of Treatment Response in Research Blood Samples for Paricalcitol [Efficacy]
Zeitfenster: 12 weeks

Evaluation of circulating biomarkers of treatment response using research blood samples collected at baseline and post-treatment.

12 weeks
Molecular Biomarker Analysis of Treatment Response in Research Blood Samples for Pirfenidone [Efficacy]
Zeitfenster: 12 weeks

Evaluation of circulating biomarkers of treatment response using research blood samples collected at baseline and post-treatment.

12 weeks
Biomarker Analysis of Treatment Response in Tissue Biopsy Samples for Pirfenidone [Efficacy]
Zeitfenster: 12 weeks

Quantitative assessment of treatment response using baseline and post-treatment archival tissue biopsy samples, measuring changes in Ki-67 positive tumor cells

12 weeks
Biomarker Analysis of Treatment Response in Tissue Biopsy Samples for Paricalcitol [Efficacy]
Zeitfenster: 12 weeks

Quantitative assessment of treatment response using baseline and post-treatment archival tissue biopsy samples, measuring changes in Ki-67 positive tumor cells

12 weeks
Biomarker Analysis of Treatment Response in Tissue Biopsy Samples for Paricalcitol [Efficacy]
Zeitfenster: 12 weeks from treatment initiation

Quantitative assessment of treatment response using baseline and post-treatment archival tissue biopsy samples, measuring changes in density of Fibroblast Activation Protein-positive (FAP+)

12 weeks from treatment initiation
Biomarker Analysis of Treatment Response in Tissue Biopsy Samples for Pirfenidone [Efficacy]
Zeitfenster: 12 weeks from treatment initiation

Quantitative assessment of treatment response using baseline and post-treatment archival tissue biopsy samples, measuring changes in density of Fibroblast Activation Protein-positive (FAP+)

12 weeks from treatment initiation
Biomarker Analysis of Treatment Response in Tissue Biopsy Samples for Paricalcitol [Efficacy]
Zeitfenster: 12 weeks from treatment initiation

Quantitative assessment of treatment response using baseline and post-treatment archival tissue biopsy samples measuring changes in collagen density (quantified via Sirius Red or Masson's Trichrome staining).

12 weeks from treatment initiation
Biomarker Analysis of Treatment Response in Tissue Biopsy Samples for Pirfenidone [Efficacy]
Zeitfenster: 12 weeks from treatment initiation

Quantitative assessment of treatment response using baseline and post-treatment archival tissue biopsy samples measuring changes in collagen density (quantified via Sirius Red or Masson's Trichrome staining).

12 weeks from treatment initiation

Mitarbeiter und Ermittler

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

Sponsor

Ermittler

  • Hauptermittler: Patrick Wagner, AHN Health Network

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. September 2026

Primärer Abschluss (Geschätzt)

1. September 2030

Studienabschluss (Geschätzt)

1. November 2030

Studienanmeldedaten

Zuerst eingereicht

16. September 2026

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

28. September 2026

Zuerst gepostet (Tatsächlich)

5. Oktober 2026

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

5. Oktober 2026

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

28. September 2026

Zuletzt verifiziert

1. September 2026

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Andere Studien-ID-Nummern

  • 2026-077

Plan für individuelle Teilnehmerdaten (IPD)

Planen Sie, individuelle Teilnehmerdaten (IPD) zu teilen?

NEIN

Beschreibung des IPD-Plans

Sharing of data or bio-specimens is not currently planned and will require a separate IRB application and a Material Transfer Agreement (MTA) or Data Use Agreement (DUA), as applicable, in the event that such plans arise in the future

Arzneimittel- und Geräteinformationen, Studienunterlagen

Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt

Nein

Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt

Nein

Produkt, das in den USA hergestellt und aus den USA exportiert wird

Nein

Diese Informationen wurden ohne Änderungen direkt von der Website clinicaltrials.gov abgerufen. Wenn Sie Ihre Studiendaten ändern, entfernen oder aktualisieren möchten, wenden Sie sich bitte an register@clinicaltrials.gov. Sobald eine Änderung auf clinicaltrials.gov implementiert wird, wird diese automatisch auch auf unserer Website aktualisiert .