The plasma level of angiopoietin-1 was significantly higher in cancer patients compared to controls, median 671.4 pg/mL (IQR 440.9–1035.9, range 359.1–2490.4) vs. 288.9 (IQR 189.8–389.6, range 98.4–492.9) (Mann-Whitney U test, p = 0.0028; Shapiro-Wilk test, p < 0.0001; Kolmogorov-Smirnov test, p < 0.0100). Here, ANGPT1 is linked to cancer.