In line with these results, here we report significantly lower frequencies of CD56+CD3− NK cells in the blood and tumour of OAC patients with visceral obesity (blood; n = 17, tumour; n = 8) as categorised by visceral fat area (VFA) compared to non-obese (blood; n = 12, tumour; n = 7); blood: non-obese versus obese (13.12% vs. 8.6%, p = 0.04), tumour: non-obese versus obese (3.466% vs. 1.342%, p = 0.0068) (Fig. 1a). Here, NCAM1 is linked to neoplasm.