FAP and type 2 diabetes mellitus: Meanwhile, multivariable logistic regression analysis uncovered a significant positive association between plasma FAP activity (OR 2.906, 95% CI 1.531–5.514; P=0.001) and level (OR 2.776, 95% CI 1.511–5.101; P=0.001) and the presence of T2DM with HFpEF (Figure 1h and Table 2).