Table 2. At the time of de novo DSA (biopsy #1).

Variables	IVIG+ N = 11	IVIG- N = 9	P
Delay from transplant, months, median (Q1-Q3)	3 (2–5)	5 (3–7)	0.25
Class I DSA
N (%)	7 (64)	5 (55)	1.00
Number, median (Q1-Q3)	1 (1–2)	1 (0–1)	0.39
MFI max, median (Q1-Q3)	2340 (1343–3354)	2049 (1375–2546)	0.78
MFI sum, median (Q1-Q3)	3410 (1773–4712)	2482 (1528–3204)	0.32
Class II DSA
N (%)	5 (45)	3 (33)	1.00
Number, median (Q1-Q3)	0 (0–1)	0 (0–1)	0.72
MFI max, median (Q1-Q3)	1672 (1225–5526)	1583 (1000–5896)	0.78
MFI sum, median (Q1-Q3)	1672 (1225–6102)	1583 (1000–5896)	0.78
Histology
Glomerulitis, N (%)	0 (0)	0 (0)	.
Peri-tubular capillaritis, N (%)	0 (0)	0 (0)	.
Interstitial inflammation, N (%)	1 (9)	0 (0)	1.00
Grade, 1/2/3	1/0/0	.	.
Tubulitis, N(%)	2 (18)	0 (0)	0.49
Grade, 1/2/3	2/0/0	0 (0)	.
Chronic glomerulopathy, N (%)	0 (0)	0 (0)	.
Interstitial fibrosis, N (%)	5 (45)	3 (43)	1.00
Grade, 1/2/3	3/1/1	1/2/0	.
Tubular atrophy, N (%)	4 (36)	3 (43)	1.00
Grade, 1/2/3	3/0/1	2/1/0	.
Vascular
cv, N (%)	3 (27)	2 (28)	1.00
Grade, 1/2/3	2/1/0	2/0/0	.
ah, N (%)	4 (36)	4 (57)	0.63
Grade, 1/2/3	3/1/0	3/1/0	.
C4d+, N (%)	0 (0)	0 (0)	.
eGFR (ml/min/1,73m2), mean (SD)	63 (±20)	53 (±15)	0.30
Proteinuria (g/L), mean (SD)	0.07 (±0.03)	0.09 (±0.06)	0.60