Histological and clinical evaluation of marginal donor kidneys before transplantation: Which is best?

Table 1 Descriptive table of selected clinical scoring system

Score	Authors	Variables included in risk score	Score grades	Outcome
Expanded criteria donor	Port et al[58], 2002	Donor age	SCD	Relative risk of graft failure compared to SCD
		Cerebrovascular accident as cause of death	ECD	RR>1.7
		Serum creatinine> 1.5mg/dL
		History of hypertension
Deceased donor score	Nyberg et al[65], 2003	Age		5-year graft survival
		History of hypertension	A (0-9 points)	Grade A 82%
		Creatinine clearance	B (10-19 points)	Grade B 79%
		HLA mismatch	C (20-29 points)	Grade C 72%
		Cause of death	D (30-39 points)	Grade D 65%
Donor risk score (DRS)	Schold et al[67], 2005	Donor risk factors		5-year graft survival
		Race	I	Grade I 76.7%
		Age	II	Grade II 73.6%
		History of hypertension	III	Grade III 66.3%
		History of diabetes	IV	Grade IV54.8%
		Cause of death	V	Grade V 47.6%
		History of hypertension
		History of diabetes
		Cause of death
		HLA-Dr mismatch
		CMV mismatch
		Cold ischemia time
DGF nomogram	Irish et al[70], 2003	Donor risk factors	Continuous point score	Delayed graft function
		Age
		Serum creatinine
		History of hypertension
		Cause of death
		Donor after cardiac death
		Recipient risk factors
		Peak PRA
		Race
		Gender
		History of diabetes mellitus
		Previous transplant
		Pretransplant dialysis
		Pretransplant transfusions
		Combined transplantation
		HLA mismatch
		Cold ischemia time
KDRI	Rao et al[71], 2009	Donor risk factors	KDRI quintile	5-year graft survival
		Age	0.45-0.79	82%
		Race	0.80-0.96	79%
		Height	0.97-1.15	NA
		Weight	1.16-1.45	NA
		History of hypertension	>1.45	63%
		History of diabetes
		Cause of death
		Serum creatinine
		Hepatitis C
		Donation after cardiac death
		HLA-B mismatch
		HLA-DR mismatch
		Cold ischemia time
		Double or en bloc transplant
Donor-only KDRI	OPTN[72], 2014	Donor risk factors		5-year graft survival
		Age	<0.6	80%
		Race	0.61-0.79	78%
		Height	0.80-0.99	74%
		Weight	1.00-1.19	66%
		History of hypertension	1.20-1.59	59%
		History of diabetes	1.60-1.99	52%
		Cause of death	>1.99	44%
		Serum creatinine
		Hepatitis C
		Donation after cardiac death

ECD: Expanded criteria donor; KDRI: Kidney donor risk index; OPTN: The Organ Procurement and Transplantation Network; SCD: Standard criteria donor.