ICAM1 and polycystic ovary syndrome: PCOS was associated with significantly higher serum ICAM-1 (median 1318 ng/ml [IQR 792–1581]) than either T2D (841 ng/ml [726–1010]) or control (746 ng/ml [668–823]) groups (F = 14.5, p < 0.001) as shown in Fig. 2.