Evolution of human kidney allograft pathology diagnostics through 30 years of the Banff classification process

Table 5 Main changes in the nomenclature and classification of chronic changes of the allograft in the Banff classification over three decades of evolution (1991 to 2019)

Meeting reports, year	Category 5: Chronic allograft nephropathy
Banff, 1993	CAN, grades, I, II, III
Banff, 1997	CAN, grades, I, II, III, each divided into a and b subcategories1
Banff, 1997 update (2001)	CAN, grades, I, II, III, a and b
Banff, 2005	IFTA, of no specific etiology1, grades I, II, III
Banff, 2007	IFTA of no specific etiology, grades I, II, III
Banff, 2013	IFTA of no specific etiology, grades I, II, III
Banff, 2015	IFTA of no specific etiology, grades I, II, III
Banff, 2017	IFTA of no specific etiology, grades I, II, III
Banff, 2019	Grading of polyoma viral nephropathy into classes 1, 2 and 3 (adequate sampling for scoring should include 2 cores with medulla)1

¹Changes in the nomenclature or criteria. CAN: Chronic allograft nephropathy; IFTA: Interstitial fibrosis/tubular atrophy.