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Analysis of Natural Killer Cell Activity (NKA) in Whole Blood in High Risk Subjects Undergoing Colonoscopy (ANKA-HR)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT03249727
Recruitment Status : Terminated (Lack of funding)
First Posted : August 15, 2017
Last Update Posted : July 5, 2019
Information provided by (Responsible Party):
ATGen Canada Inc

Brief Summary:
This study will measure the activity of natural killer (NK) cells using the in vitro diagnostic device NK Vue in high risk subjects (Quebec risk categories P2, P3 and P4) scheduled for colonoscopy.

Condition or disease Intervention/treatment Phase
Immunity, Innate Colorectal Cancer Diagnostic Test: IVDD for NK cell activity in whole blood Not Applicable

Detailed Description:
In Quebec, subjects in risk category P2 are scheduled for colonoscopy due to high suspicion of cancer based on imaging, sigmoidoscopy or clinical exam. Subjects in categories P3 and P4 are scheduled for colonoscopy for one of the following reasons: suspicion of having an inflammatory bowel condition, rectal bleeding, presence of occult blood in stool, unexplained iron deficiency anemia, recent change in bowel habits, family history of CRC or adenomatous polyps or other hereditary colorectal diseases. Often, colonoscopy is not performed within the government-prescribed recommended delays, leading to waiting lists for the procedure. Analysis of NK cell activity may help identify those at risk for the presence of CRC and therefore help prioritize subjects on these waiting lists, help manage resources and help convince subjects to have a colonoscopy. Furthermore, all subjects will undergo a FIT, allowing a determination of the ability of each test alone, as well as a combination of NK Vue and FIT, to predict outcome on colonoscopy.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 396 participants
Allocation: N/A
Intervention Model: Single Group Assignment
Intervention Model Description: All subjects will have a FIT (OC FIT-CHEK, Polymedco) and NK Vue test prior to colonoscopy
Masking: Single (Outcomes Assessor)
Masking Description: Endoscopist will not be provided the results of either the FIT or NK Vue tests performed as part of the trial; biochemist will not be provided the results of the colonoscopy
Primary Purpose: Screening
Official Title: Analysis of Natural Killer Cell Activity (NKA) in Whole Blood in High Risk Subjects Undergoing Colonoscopy
Actual Study Start Date : July 5, 2017
Actual Primary Completion Date : October 11, 2018
Actual Study Completion Date : October 11, 2018

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Colonoscopy

Intervention Details:
  • Diagnostic Test: IVDD for NK cell activity in whole blood
    Once subject has been scheduled for a colonoscopy by the institution (up to 4 weeks prior to procedure), the subject will perform a FIT at home and an NK Vue test (one sample of one mL of blood) at the institution, prior to the day of colonoscopy.
    Other Name: NK Vue

Primary Outcome Measures :
  1. Test performance of NK Vue (ability of NK Vue to detect CRC in those subjects in risk categories P2, P3 or P4) [ Time Frame: NK Vue blood draw taken within 7 days of FIT stool sampling and prior to colonoscopy ]
    Test performance of NK Vue for CRC will be assessed by ROC analysis and logistic regression, adjusting for subject baseline characteristics

Secondary Outcome Measures :
  1. Test performance of FIT, to be determined at different cut-offs reflective of the various Canadian provincial cut-offs. [ Time Frame: FIT performed at home and sample brought to institution within 7 days of collection and prior to coloscopy ]
    Test performance of FIT for CRC, using different cut-offs (≥50 ng/mL, ≥ 75 ng/mL, ≥ 100 ng/mL and ≥ 175 ng/mL), will be assessed by calculating the RR and by using ROC analyses at the different cut-offs.

  2. Test performance of NK Vue in combination with FIT [ Time Frame: FIT and NK Vue performed up to 4 weeks prior to colonoscopy, with NK Vue draw within 7 days of stool sampling ]
    Test performance of the combination of FIT at the different cut-offs (≥50 ng/mL, ≥ 75 ng/mL, ≥ 100 ng/mL and ≥ 175 ng/mL) and NK Vue (cut-off of <200 pg/mL), for CRC, will be assessed by calculating the RR and by using ROC analyses. Similar analyses will be done with subjects having either a positive FIT (at different cut-offs) or a NK Vue of <200 pg/mL

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

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Ages Eligible for Study:   40 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  1. Subjects aged 40 and over who are scheduled to undergo colonoscopy at the research site and who are classified in category P2, P3 or P4.
  2. Subjects who provide informed consent to participate in the trial

Exclusion Criteria:

  1. Lack of understanding and/or participation due to illiteracy or inability to comprehend English or French
  2. Subjects in category P3 who are there due to knowledge or suspicion of an inflammatory bowel disease
  3. Previous history of cancer (any type) or active infection (as declared by the subject at the time of enrolment)
  4. Currently participating (or participated within the previous 120 days) in an investigational therapeutic study (in case of interference of the drug with the immune system)
  5. Subjects who underwent their colonoscopy and

    1. the colonoscopy preparation was judged insufficient
    2. the colonoscopy itself was judged insufficient or incomplete by the doctor
    3. the biopsy sample was lost and cancer could not be pathologically confirmed
    4. the colonoscopy detected an inflammatory bowel disease
  6. Female who is pregnant, nursing, or of child-bearing potential while not practicing effective contraceptive methods.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT03249727

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Canada, Quebec
CIUSSS de l'Est-de-l'île-de-Montréal, Installation Hôpital Maisonneuve-Rosemont
Montreal, Quebec, Canada, H1T 2M4
Centre Hospitalier de l'Université de Montréal
Montreal, Quebec, Canada, H2X 3J4
McGill University and the McGill University Health Centre
Montreal, Quebec, Canada, H3G 1A4
Sponsors and Collaborators
ATGen Canada Inc
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Principal Investigator: Gilles Jobin, MD, FRCP CIUSSS de l'Est-de-l'île-de-Montréal; Installation Hôpital Maisonneuve-Rosemont
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Responsible Party: ATGen Canada Inc Identifier: NCT03249727    
Other Study ID Numbers: ANKA-HR
First Posted: August 15, 2017    Key Record Dates
Last Update Posted: July 5, 2019
Last Verified: July 2019
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No

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Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No
Keywords provided by ATGen Canada Inc:
natural killer cells
natural killer cell activity
Additional relevant MeSH terms:
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Colorectal Neoplasms
Intestinal Neoplasms
Gastrointestinal Neoplasms
Digestive System Neoplasms
Neoplasms by Site
Digestive System Diseases
Gastrointestinal Diseases
Colonic Diseases
Intestinal Diseases
Rectal Diseases