Diese Seite wurde automatisch übersetzt und die Genauigkeit der Übersetzung wird nicht garantiert. Bitte wende dich an die englische Version für einen Quelltext.

Effects of Different Methods of PDAC Specimen Acquisition on Primary Cell Culture and Application

10. März 2021 aktualisiert von: The Third Xiangya Hospital of Central South University

Different Methods of Pancreatic Ductal Adenocarcinoma Specimen Acquisition, EUS-FNB vs. Surgery, Influence on Culturing Primary Cells to Screen Sensitive Chemotherapeutics for Individuals: a Prospective Cohort Study

The purpose of this study is to investigate the difference in the success rate of culturing primary cells derived from pancreatic ductal adenocarcinoma specimens of patients which obtained by endoscopic ultrasound-guided fine-needle biopsy wet suction technique and surgery, analyze whether the sensitive chemotherapeutic agents screened by the primary cells cultured from the specimens obtained by the above two methods are consistent, and whether they are consistent with the clinical treatment effect of patients, verify the accuracy of laboratory drug sensitivity results, so as to provide the basis for pancreatic ductal adenocarcinoma patients to choose the source of individual treatment samples.

Studienübersicht

Status

Unbekannt

Bedingungen

Intervention / Behandlung

Detaillierte Beschreibung

Pancreatic cancer is one of the malignant tumors with the highest mortality rate in the world, with a 5-year survival rate of only 7.2%-9%. Because some patients are resistant to multiple chemotherapy drugs, and there are differences in drug sensitivity between individuals, the current pancreatic ductal adenocarcinoma (PDAC) chemotherapy effect is not satisfactory. In order to improve the efficacy of chemotherapy and achieve precise treatment, it is important to establish an accurate and individualized PDAC research model.

At present, several studies have reported that surgical specimens of pancreatic cancer are successfully used to cultivate preclinical research models. However, most patients with PDAC have developed to advanced stage at the time of diagnosis and are not suitable for surgery, which limits our ability to obtain tumor cells. Endoscopic ultrasound-guided fine-needle biopsy (EUS-FNB) can procure specimens when patients have not receive any treatment, and can also evaluate the therapeutic effect and tumor progression in the process of treatment.

Until now, there is no study to compare the efficiency of the two methods in constructing preclinical research model of pancreatic cancer. Therefore, the investigators intend to investigate the difference in the success rate of culturing primary cells derived from PDAC specimens of patients which obtained by EUS-FNB wet suction technique and surgery, analyze whether the sensitive chemotherapeutic agents screened by the primary cells cultured from the specimens obtained by the above two methods are consistent, and whether they are consistent with the clinical treatment effect of patients, verify the accuracy of laboratory drug sensitivity results, so as to provide the basis for PDAC patients to choose the source of individual treatment samples.

Studientyp

Beobachtungs

Einschreibung (Voraussichtlich)

20

Kontakte und Standorte

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

Studienorte

  • China
    • Hunan
      • Changsha, Hunan, China, 410013
        • Rekrutierung
        • The Third Xiangya Hospital, Central South University
        • Kontakt:
        • Kontakt:

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 und älter (Erwachsene, Älterer Erwachsener)

Akzeptiert gesunde Freiwillige

Nein

Studienberechtigte Geschlechter

Alle

Probenahmeverfahren

Nicht-Wahrscheinlichkeitsprobe

Studienpopulation

Patients who are considered as PDAC by imaging, and may have opportunity of surgery, and require EUS-FNB for definite diagnosis will potentially be included in this study. Informed consent will be given by the doctor in charge or endoscopic operator or researcher. Patients who agree to participate in the trial will sign an informed consent form. Patients were enrolled after being screened according to the eligibility criteria.

Beschreibung

Inclusion Criteria:

  1. Male or female, age≥18
  2. Imaging examination (US, MRI, CT or PET-CT) of patients confirmed pancreatic lesions, and considered the possibility of PDAC, EUS-FNB was needed for auxiliary diagnosis
  3. No chemotherapy, including neoadjuvant chemotherapy, postoperative adjuvant chemotherapy and palliative chemotherapy, has been performed on patients
  4. Having surgery opportunities (including radical operation and cytoreductive surgery) and willingness of operation
  5. Agree to attend this study and signed informed consent

Exclusion Criteria:

  1. Poor physical condition, including but not limited to hemoglobin ≤ 8.0g/dl, severe cardiopulmonary insufficiency, etc
  2. Coagulation dysfunction (platelet count < 50,000/mm3, international standardized ratio > 1.5), or inability to discontinue anticoagulation therapy
  3. High risk for deep sedation
  4. Acute pancreatitis in the previous 2 weeks
  5. Pregnancy or lactation
  6. Any diseases leading to unreliable follow-up
  7. Absence of informed consent

Studienplan

Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.

Wie ist die Studie aufgebaut?

Designdetails

Kohorten und Interventionen

Gruppe / Kohorte
Intervention / Behandlung
EUS-FNB group
Each patient participated in the EUS-FNB group and the surgery group. The procedure of EUS-FNB with wet suction technique is as follow: before the needle was inserted into the biopsy channel, the stylet was removed, and the needle was flushed with saline solution until the fluid dripped out of the needle tip. The air column was replaced with the fluid. A 10-mL syringe was prefilled with 2 mL of saline solution, and the valve was closed. The syringe was loaded to the 5-mL position (i.e. a 3-mL vacuum) and then attached to the proximal port and used for biopsy after inserting into the biopsy channel and puncturing the lesion. Each patient was performed 1-2 passes to obtain specimens for subsequent experiments.
Verfahren: different methods of specimen acquisition
After informed consent, the investigators use two methods to obtain specimens for patients with pancreatic ductal adenocarcinoma, who needs eus-fnb for auxiliary diagnosis and had the opportunity of surgery. One method is EUS-FNB with wet suction technique, the other is surgery (including radical operation and cytoreductive surgery). Both methods are used on the same patient to remove deviations in results caused by tumor heterogeneity.
surgery group
Each patient participated in the EUS-FNB group and the surgery group. The patient underwent EUS-FNB with wet suction technique first, followed by surgery (palliative surgery without excising tumor is not included) for pancreatic cancer. According to the size of the specimen, 0.5cm3-1cm3 tumor specimen was used for subsequent experiments.
Verfahren: different methods of specimen acquisition
After informed consent, the investigators use two methods to obtain specimens for patients with pancreatic ductal adenocarcinoma, who needs eus-fnb for auxiliary diagnosis and had the opportunity of surgery. One method is EUS-FNB with wet suction technique, the other is surgery (including radical operation and cytoreductive surgery). Both methods are used on the same patient to remove deviations in results caused by tumor heterogeneity.

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
The different culture success rate
Zeitfenster: About 6 weeks after operation
The difference in the success rate of primary cell culture (P1) and passage to the third generation (P3) between PDAC specimens obtained by EUS-FNB and those obtained by surgery.
About 6 weeks after operation
The representation of the primary cells of pancreatic cancer
Zeitfenster: About 8 weeks after operation
Through Western Blot and PCR methods to detect the representativeness of primary cells to the primary tumor. If the patient underwent surgery later, hematoxylin-eosin staining and/or immunohistochemistry were added to compare the histological morphology with the original tumor.
About 8 weeks after operation

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Differences in drug susceptibility results between the two groups
Zeitfenster: About 14 weeks after operation
The primary cells cultured from PDAC which obtained by two methods, EUS-FNB and surgery, are used to screen sensitive chemotherapeutic drugs commonly used in pancreatic ductal adenocarcinoma, and to see if there are any differences between the two groups.
About 14 weeks after operation
Differences of drug sensitivity results between in vitro and clinical drug results
Zeitfenster: About 22 weeks after operation
The results of the commonly used sensitive chemotherapeutics for pancreatic ductal adenocarcinoma screened by the two groups of primary cells are fed back to the clinician. If the patients have not started chemotherapy, the drug will be used according to the results screened in vitro to observe whether the tumor markers improved and the tumor size decreased. If the patients have completed chemotherapy, the laboratory results are compared with the clinical results of chemotherapy, i.e., whether the in vitro screening results of sensitive/resistant drugs have the same effect in vivo.
About 22 weeks after operation

Mitarbeiter und Ermittler

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

Sponsor

The Third Xiangya Hospital of Central South University

Ermittler

  • Hauptermittler: Xiaoyan Wang, M.D., The Third Xiangya Hospital, Central South University

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 (Tatsächlich)

15. Januar 2021

Primärer Abschluss (Voraussichtlich)

30. November 2021

Studienabschluss (Voraussichtlich)

28. Februar 2022

Studienanmeldedaten

Zuerst eingereicht

1. März 2021

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

10. März 2021

Zuerst gepostet (Tatsächlich)

15. März 2021

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

15. März 2021

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

10. März 2021

Zuletzt verifiziert

1. März 2021

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Zusätzliche relevante MeSH-Bedingungen

Andere Studien-ID-Nummern

  • 2021EUS-002

Plan für individuelle Teilnehmerdaten (IPD)

Planen Sie, individuelle Teilnehmerdaten (IPD) zu teilen?

NEIN

Arzneimittel- und Geräteinformationen, Studienunterlagen

Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt

Nein

Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt

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 .

Klinische Studien zur Pankreatisches duktales Adenokarzinom

Suchen Sie nach ähnlichen Studien

Sponsoren und Mitarbeiter

Krankheiten

Drogeninterventionen

CROs by country

CROs in Cyprus

Bedingungen

Seltene Krankheiten

Drogeninterventionen

Nahrungsergänzungsmittel

Sponsor / Mitarbeiter

Standorte

Abonnieren