borderline significantp ≈ 0.05
Nuclear MMP9 expression correlated with ACR and immune cell markers and was borderline significant for AMR ( p ≈ 0.05).
Nuclear MMP9 expression correlated with ACR and immune cell markers and was borderline significant for AMR ( p ≈ 0.05).
Although MMP2 expression was significantly associated with the degree of pAMR, when examined alone, associations with specific immune cell markers linked to humoral rejection—CD4, cluster of differentiation 8 (CD8), and CD68—did not reach statistical significance ( p = 0.0700, p = 0.0700, and p = 0.1900, respectively).
However, a closer analysis of our cohort revealed a notable trend: MMP2 expression was more consistently associated with AMR grades than with ACR, particularly when its cytoplasmic positivity was >50%.
In addition, <50% nuclear positivity exhibited a positive trend (OR = 2.27), although it did not reach statistical significance.