Final clinical study results presented at

Asian Pacific Digestive Week (APDW) 2016


A new blood test to assess the risk of Colorectal Cancer (CRC)
Measurement of Natural Killer Cell Activity (NKA) in patients undergoing colonoscopy.



This study was conducted at Maisonneuve-Rosemont Hospital in Montreal, Quebec, Canada by Dr. Gilles Jobin and colleagues. 1081 subjects >40 years of age who underwent colonoscopy were recruited between October 2014 and January 2016. NK VueTM a novel in vitro diagnostic device (IVDD), was used to measure NKA in these subjects. NKA was compared in subjects with cancer-negative colonoscopies to those with pathologically confirmed CRC.

Final study results are presented today during the Free Paper, Lower GI 1 session at Asian Pacific Digestive Week (APDW) 2016 by Dr. Katia Betito, Vice-President, Scientific Affairs at ATGen Canada.



Briefly, in the 872 evaluable subjects, statistically significant differences were found between the NKA of patients positive for CRC (n=23), confirmed by colonoscopy and pathological verification, and that of patients negative for CRC (n=849) (CRC mean 317.2 pg/mL, CRC-negative mean 745.7 pg/mL, p=0.002; CRC median 86.0 pg/mL, CRC-negative median 298.1 pg/mL, p=0.002). At a cut-off of 200 pg/mL, sensitivity of the IVDD for the detection of CRC was 87.0%, with a specificity of 60.7%, with positive and negative predictive values of 5.7% and 99.4%, respectively. The present study using a new simple blood test confirms that the measurement of NKA may be a useful tool in clinical practice to assess the risk of CRC.



NK Vue is the first commercially available IVDD that measures NKA in a small volume of stimulated whole blood. This IVDD was approved by Health Canada in December 2014 for the monitoring of the immune status of individuals. For additional information on NKA, the NK Vue test or ATGen Canada Inc., please visit


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