While studying a Paneth-cell marker for colorectal neoplasia (CRC) prospectively [11], we chanced upon patients who had contracted COVID-19, and thus, we had been able to associate the pre-morbid stance of a marker using a simple ratio of the blood concentration of ferritin as the numerator and the stool p87 ELISA results as the denominator, which appeared to correlate with the previously acquired COVID-19 disease. This evidence concerns the gene IMMT and COVID-19.