Table 2.

Risk scores associated with various genotypes.

Risk score	CCR2 190	CCR5 −2459	CCR5 ORF	CXCL12 801 (I)	CXCL12 801 (II)	CXCL12 801 (III)	CXCL12 801 (IV)
2	-	AAa	wtwta	-	-	-	-
1	GGb	GAc	wtΔ32c	GGb, GAb	GGb	AAa	GAa, AAa
0	GAd, AAd	GGd	Δ32Δ32d	AAd	GAd, AAd	GGb, GAb	GGb

Roman numerals I, II, III, and IV represent four different scenarios, described in Materials and methods.

^aSusceptibility/risk

^bReference genotype

^cPartial protection

^dProtection