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Karakterisering av biofysiske stromale egenskaper i menneskelig kreft: Mot persontilpasset beregningsonkologi (DCE-MRI)

16. september 2026 oppdatert av: University Hospital, Ghent

Drug delivery in solid tumors, whether administered systemically or locoregionally, is hindered by an elevated interstitial fluid pressure (IFP). Stromal targeting therapies are in active development, aiming to enhance drug transport after systemic or locoregional delivery. To date, no clinical methods are available to quantify tumor biophysical properties (including IFP). The investigators aim to use a combination of dynamic contrast enhanced MRI and computational fluid modeling (CFD) to measure stromal IFP in patients with pancreatic cancer and in patients with ovarian or colonic peritoneal carcinomatosis (PC). Computational data will be correlated with therapy response, platinum drug penetration, and invasively measured biophysical parameters after intravenous (pancreas) or intraperitoneal (ovarian/colonic PC) administration of a platinum compound. This would be the first in depth clinical study addressing this important topic, and could pave the way to developing personalized computational based treatment approaches aimed at targeting the biophysical environment of the tumor stroma in order to enhance cancer drug delivery.

Studieoversikt

Status

Fullført

Forhold

Intervensjon / Behandling

Studietype

Intervensjonell

Registrering (Faktiske)

22

Fase

  • Ikke aktuelt

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiesteder

      • Ghent, Belgia, 9000
        • Ghent University Hospital

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

18 år og eldre (Voksen, Eldre voksen)

Tar imot friske frivillige

Nei

Kjønn som er kvalifisert for studier

Alle

Beskrivelse

Inclusion Criteria:

  • Patients with non-cystic adenocarcinoma the pancreas requiring neoadjuvant chemotherapy (any) because of borderline resectability
  • Patients with stage IIIC or IVA ovarian cancer planned for debulking and HIPEC.
  • Patients with stage IIIC or IVA colorectal cancer planned for debulking and HIPEC

Exclusion Criteria:

  • Age <18 years

  • Pregnancy, or suspected inadequate contraception during study period

  • Clinically detectable ascites

  • Intestinal or urinary tract obstruction

  • Hepatic and/or extra-abdominal metastatic disease

  • Impaired renal function (serum creatinine > 1.5mg/dl or calculated GFR (CKD-EPI) < 60mL/min/1.73 m²)

  • Impaired liver function (serum total bilirubin > 1.5 mg/dl, except for known Gilbert's disease)

  • Platelet count < 100.000/µl

  • Hemoglobin < 9g/dl

  • Neutrophil granulocytes < 1.500/ml

  • Irresectable or metastatic disease

  • Contra-indication for contrast enhanced MRI

    • Known allergy or intolerance to Gadolinium based contrast agents
    • Severe claustrophobia
    • Patients with metallic foreign bodies (pacemaker, neurostimulator, pedicle screw, cerebral aneurysm clips…) that may dislodge in a strong magnetic field
  • Frail and medically unfit patients (Karnofsky index < 60% and WHO Performance score 3 or 4)

  • Estimated life expectancy < 12 months

  • In case of ovarian/colon cancer: no visible peritoneal metastasis on CT scan

  • Acute or chronic pancreatitis

Studieplan

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

  • Primært formål: Grunnvitenskap
  • Tildeling: N/A
  • Intervensjonsmodell: Enkeltgruppeoppdrag
  • Masking: Ingen (Open Label)

Våpen og intervensjoner

Deltakergruppe / Arm
Intervensjon / Behandling
Eksperimentell: DCE-MRI

Patients will undergo an MR scan before undergoing cytoreductive surgery. If neoadjuvant chemotherapy is administered, an extra MR scan is planned before the start of the neoadjuvant chemotherapy.

During surgery, tissue samples will be taken for interstitial fluid pressure (IFP) measurement, immunohistochemistry (IHC) and characterization of biophysical properties (viscoelastic properties and hydraulic conductivity).

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Biophysical properties of the tumor tissue - measurement of Young modulus to assess viscoelasticity
Tidsramme: up to 1 week after surgery

A flat-ended cylindrical indentation tip, with 5 mm diameter, will be attached to a load cell to indent the sample. After the initial contact, the control algorithm will drive the tip to indent a given depth (30% of sample's height) into the test material at a constant velocity (1 mm/s). After reaching the prescribed depth, the position of the indentation tip will be fixed at this value for a given amount of time (300 s) in order to start the stress relaxation process. Units: Pa = kg m-1 s-2

up to 1 week after surgery
Biophysical properties of the tumor tissue - measurement of hydraulic conductivity
Tidsramme: up to 1 week after surgery

The hydraulic conductivity of samples will be measured by detecting the amount of fluid exchange through the sample due to a hydrostatic pressure gradient in a closed system. The system includes two EasyMount Ussing diffusion chambers placed in a 2-channel EasyMount stand (Physiologic Instruments, Inc.; San Diego, CA), pressure reservoirs (syringes), and a bubble tracker device for measuring the liquid exchange.

The nominal hydraulic conductivity (K') will be calculated by:

K'=〖(d/D)〗^2 L/ρgh ∆x/∆t Where L and D are the tissue thickness and tissue area (interface), d is the glass tube diameter, ρ is the liquid density, h is the liquid column height, g is the gravity acceleration, x is bubble displacement and t is time.

up to 1 week after surgery

Sekundære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
CFD modeling
Tidsramme: up to 12 months after surgery

Develop and validate a computational fluid dynamics (CFD) model to calculate interstitial fluid pressure based on dynamic contrast enhanced (DCE)-MRI data. This approach is based on Darcy's law (v=-K∇P) with v the velocity and ∇P the pressure gradient. The boundary condition at the outer edge of the tumor will be set to equal the convective outflow velocity values (v), as calculated during DCE-MRI. Hydraulic conductivity values (K) will be based on the tissue sample measurements. Other operational parameters such as the fluid properties (e.g. viscosity of interstitial fluid) will be based on literature values.

up to 12 months after surgery
Measurement of Pt penetration
Tidsramme: up to 24 months after surgery

Quantitative laser ablation-ICP-MS will be used to analyze platinum penetration/distribution in peritoneal metastases that are left in situ during IP drug delivery but resected after completion of the procedure. The pixel intensities will be bilinearily interpolated and the Pt penetration depth set at 50% of the maximum intensity values.

up to 24 months after surgery

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Sponsor

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart (Faktiske)

11. oktober 2019

Primær fullføring (Faktiske)

18. juli 2023

Studiet fullført (Faktiske)

19. juli 2023

Datoer for studieregistrering

Først innsendt

31. juli 2020

Først innsendt som oppfylte QC-kriteriene

10. august 2020

Først lagt ut (Faktiske)

13. august 2020

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

21. september 2026

Siste oppdatering sendt inn som oppfylte QC-kriteriene

16. september 2026

Sist bekreftet

1. september 2026

Mer informasjon

Begreper knyttet til denne studien

Plan for individuelle deltakerdata (IPD)

Planlegger du å dele individuelle deltakerdata (IPD)?

NEI

Legemiddel- og utstyrsinformasjon, studiedokumenter

Studerer et amerikansk FDA-regulert medikamentprodukt

Nei

Studerer et amerikansk FDA-regulert enhetsprodukt

Nei

Denne informasjonen ble hentet direkte fra nettstedet clinicaltrials.gov uten noen endringer. Hvis du har noen forespørsler om å endre, fjerne eller oppdatere studiedetaljene dine, vennligst kontakt register@clinicaltrials.gov. Så snart en endring er implementert på clinicaltrials.gov, vil denne også bli oppdatert automatisk på nettstedet vårt. .