In the sensitivity analysis investigating separate associations between the three measured MASP peptides and incident diabetes, the ‘TGVI’ peptide showed the strongest association (OR per sex-specific SD = 1.392 [95% CI 1.132, 1.711], model 2a), followed by ‘AAGN’ (1.260 [1.024, 1.551]) and ‘SLPT’ (1.104 [0.897, 1.359]). Here, MASP1 is linked to diabetes mellitus.