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Evaluating Diagnostic Performance of Spectra IMDx System for Detection of Gastric Cancer and Precancerous Lesions

12. april 2021 opdateret af: Endofotonics Pte Ltd

A Prospective, Single Centre Study Evaluating The Diagnostic Performance of Spectra IMDx System for The Detection of Gastric Cancer and Precancerous Lesions In Vivo

The purpose of the study is to evaluate the diagnostic performance of a Raman spectroscopy analysis device - Spectra IMDx for the detection of gastric cancer and precancerous lesions in vivo.

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

This is a prospective, single centre study to assess the diagnostic performance of Spectra IMDx system in detection of gastric cancer and precancerous lesions in subjects with suspected gastric intraepithelial neoplasia who are undergoing upper gastrointestinal endoscopic procedures.

The Spectra IMDx system comprises a laser system, a spectrometer, a computer with an analysis algorithm installed, and other ancillary parts. The Spectra IMDx system also comprises a Raman probe that can be connected with the main system. The Raman probe is an assembly of optical fibres and optical components arranged for maximal transmission of light energy. When in use, the laser system will emit a 785nm near infra-red laser that will be transmitted through the Raman probe to the distal end. When the laser is interrogated upon a tissue surface, the light energy is absorbed and reflected. The reflected energy is then collected from the distal end of the Raman probe, transmitted back to the main system, and passed through the spectrometer. The collected signal is then processed to obtain the clean Raman signal, which is then parsed through the analysis algorithm to evaluate its risk for cancer (high/low). Feedback will then be generated on the GUI in real time.

Undersøgelsestype

Interventionel

Tilmelding (Forventet)

185

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Studiesteder

  • Kina
    • Fujian
      • Xiamen, Fujian, Kina, 361004
        • Rekruttering
        • Zhongshan Hospital Xiamen University
        • Kontakt:

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

18 år og ældre (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  • The subject is older than 18 years of age.
  • The subject is undergoing upper GI endoscopy for suspected intraepithelial neoplasia or gastric cancer lesions (less than 20mm)
  • The subject must have personally signed and dated the patient informed consent form indicating that he/she has been informed of all pertinent aspects of the study.
  • The subject must be willing and able to comply with all study procedures.

Exclusion Criteria:

  • The subject has bleeding disorders, such as haemophilia, in whom biopsies are contraindicated.
  • The subject shows presence of active gastrointestinal bleeding or coagulopathy precluding biopsies.
  • The subject has rare gastric malignancies such as gastrointestinal stromal tumors (GISTs), lymphomas and neuroendocrine tumors （NETs）.
  • The subject is pregnant.
  • The subject with liver cirrhosis, impaired renal function, acute gastrointestinal (GI) bleeding, esophageal varices, jaundice, and GI post-surgery
  • The subject with severe co-morbid illness, such as end-stage renal failure (ESRF), congestive cardiac failure (CCF), severe osteoarthritis (OA) and rheumatoid arthritis (RA) requiring long term non-steroidal anti-inflammatory drug (NSAID) therapy
  • The subject has other severe acute or chronic medical or psychiatric condition or laboratory abnormality that may interfere with the interpretation of study results and in the judgment of the investigator would make the subject unsuitable for entry into the study
  • The subject on regular anti-coagulant prophylaxis such as warfarin must be able to undergo a five-day washout period before gastroscopy. The subject on aspirin, ticlopidine and clopidogrel must be able to undergo a one-week washout period before gastroscopy. The subject's physician or study co-investigator will exercise their clinical judgement to ensure subject's safety.
  • The subject is unwilling or unable to provide signed informed consent.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Diagnostisk
  • Tildeling: N/A
  • Interventionel model: Enkelt gruppeopgave
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Spectra IMDx

The physician will be asked to give a diagnosis of the lesion under White light endoscopy (WLE) firstly and the endoscopic diagnosis result will be recorded on case report form. Then the physician will introduce the probe of Spectra IMDx system to contact and assess the lesion. The Spectra IMDx system will detect the scattering light signal from the lesion and assess the risk of the lesion being high-grade intraepithelial neoplasia or gastric cancer, and display the result on the Spectra IMDx screen. The Spectra IMDx assessment will be recorded on case report form. Both the patient and doctor will be blinded from the results from Spectra IMDx system.

After Spectra IMDx system examination, the physician takes biopsy sample(s) in suspected lesion for further histopathological diagnosis.
Enhed: Spectra IMDx system
The Spectra IMDx system is intended to be used in conjunction with conventional white light endoscopy in upper gastrointestinal endoscopic procedure to identify patients with high risk of developing and/or having gastric cancer and it is intended for use on patients above and equal to the age of 18.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Sensitivity of Spectra IMDx system
Tidsramme: During the procedure

To assess the sensitivity of Spectra IMDx system for the detection of gastric cancer and precancerous lesions in vivo in the presence of using histological diagnosis as the gold standard.

Diagnostic measurements will be assessed in this trial. Using the histopathological diagnosis as the gold standard, true positives (TPs), true negatives (TNs), false positives (FPs) and false negatives (FNs) can be obtained for both Spectra IMDx (IMDx) system.

Sensitivity = TP/(TP + FN).
During the procedure

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Specificity of Spectra IMDx system
Tidsramme: During the procedure

To assess the specificity and accuracy of Spectra IMDx system for the detection of gastric cancer and precancerous lesions in vivo in the presence of using histological diagnosis as the gold standard.

Specificity = TN/(TN + FP).
During the procedure
Accuracy of Spectra IMDx system
Tidsramme: During the procedure

To assess the accuracy of Spectra IMDx system for the detection of gastric cancer and precancerous lesions in vivo in the presence of using histological diagnosis as the gold standard.

Accuracy = (TP + TN)/(TP + TN + FP + FN).
During the procedure

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Endofotonics Pte Ltd

Samarbejdspartnere

Zhongshan Hospital Xiamen University

Efterforskere

  • Ledende efterforsker: Hongzhi Xu, MD, PhD, Zhongshan Hospital Xiamen University

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

7. oktober 2019

Primær færdiggørelse (Forventet)

31. maj 2021

Studieafslutning (Forventet)

31. juli 2021

Datoer for studieregistrering

Først indsendt

31. marts 2021

Først indsendt, der opfyldte QC-kriterier

4. april 2021

Først opslået (Faktiske)

8. april 2021

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

15. april 2021

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

12. april 2021

Sidst verificeret

1. april 2021

Mere information

Begreber relateret til denne undersøgelse

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • EFCNX002

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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Studerer et amerikansk FDA-reguleret enhedsprodukt

Ingen

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Kliniske forsøg med Mavekræft

Kliniske forsøg med Spectra IMDx system

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Betingelser

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Kosttilskud

Sponsor / samarbejdspartnere

Placeringer

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