인간 암의 생물물리학적 간질 특성의 특성화: 개인화된 전산 종양학을 향하여 (DCE-MRI)
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.
연구 개요
연구 유형
등록 (실제)
단계
- 해당 없음
연락처 및 위치
연구 장소
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Ghent, 벨기에, 9000
- Ghent University Hospital
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참여기준
자격 기준
공부할 수 있는 나이
건강한 자원 봉사자를 받아들입니다
연구 대상 성별
설명
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:
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Age <18 years
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Pregnancy, or suspected inadequate contraception during study period
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Clinically detectable ascites
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Intestinal or urinary tract obstruction
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Hepatic and/or extra-abdominal metastatic disease
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Impaired renal function (serum creatinine > 1.5mg/dl or calculated GFR (CKD-EPI) < 60mL/min/1.73 m²)
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Impaired liver function (serum total bilirubin > 1.5 mg/dl, except for known Gilbert's disease)
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Platelet count < 100.000/µl
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Hemoglobin < 9g/dl
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Neutrophil granulocytes < 1.500/ml
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Irresectable or metastatic disease
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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
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Frail and medically unfit patients (Karnofsky index < 60% and WHO Performance score 3 or 4)
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Estimated life expectancy < 12 months
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In case of ovarian/colon cancer: no visible peritoneal metastasis on CT scan
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Acute or chronic pancreatitis
공부 계획
연구는 어떻게 설계됩니까?
디자인 세부사항
- 주 목적: 기초 과학
- 할당: 해당 없음
- 중재 모델: 단일 그룹 할당
- 마스킹: 없음(오픈 라벨)
무기와 개입
참가자 그룹 / 팔 |
개입 / 치료 |
|---|---|
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실험적: DCE-MRI
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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). |
연구는 무엇을 측정합니까?
주요 결과 측정
결과 측정 |
측정값 설명 |
기간 |
|---|---|---|
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Biophysical properties of the tumor tissue - measurement of Young modulus to assess viscoelasticity
기간: up to 1 week after surgery
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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
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Biophysical properties of the tumor tissue - measurement of hydraulic conductivity
기간: up to 1 week after surgery
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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
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2차 결과 측정
결과 측정 |
측정값 설명 |
기간 |
|---|---|---|
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CFD modeling
기간: up to 12 months after surgery
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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
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Measurement of Pt penetration
기간: up to 24 months after surgery
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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
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공동 작업자 및 조사자
연구 기록 날짜
연구 주요 날짜
연구 시작 (실제)
기본 완료 (실제)
연구 완료 (실제)
연구 등록 날짜
최초 제출
QC 기준을 충족하는 최초 제출
처음 게시됨 (실제)
연구 기록 업데이트
마지막 업데이트 게시됨 (실제)
QC 기준을 충족하는 마지막 업데이트 제출
마지막으로 확인됨
추가 정보
이 연구와 관련된 용어
추가 관련 MeSH 약관
기타 연구 ID 번호
- BC-06058 (EC 2019/1330)
개별 참가자 데이터(IPD) 계획
개별 참가자 데이터(IPD)를 공유할 계획입니까?
약물 및 장치 정보, 연구 문서
미국 FDA 규제 의약품 연구
미국 FDA 규제 기기 제품 연구
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