Table 3. Frequency of mutation by molecule in naive and ART pre-treated patients with virological failure.

Patients Category	Patients	HIV-1 RNA VL (Log/mL)	NRTI						NNRTIs
			ZDV	D4T	3TC/FTC	ABC	DDI	TDF	NVP	EFV	ETR	RVP
ARV-naïve patients	10-1806	3,7	R	R	R	PR	PR	PR	R	R	SS	N/A
	10-1701	4,5	R	R	R	PR	PR	PR	R	R	PR	N/A
	10-1866	3,4	PR	R	R	PR	PR	PR	R	R	PR	R
	10.1828	4,3	PR	R	R	PR	PR	PR	R	R	SS	R
	11.2005	3,7	PR	PR	R	PR	PR	PR	R	R	PR	PR
	11.1919	4,8	PR	PR	R	PR	PR	PR	R	R	PR	PR
	10.1872	4,4	PR	PR	R	PR	PR	PR	R	R	PR	N/A
ARV pre-exposed patients	12.2095	5,8	R	R	R	R	R	R	R	R	PR	R
	10-1779	4,6	R	R	R	R	R	R	R	R	PR	N/A
	10-1885	5,5	PR	R	R	PR	PR	PR	R	R	R	N/A
	10-1896	4,4	R	R	R	SS	R	SS	R	R	PR	N/A
	10-1830	5,4	R	R	R	PR	PR	PR	R	R	R	N/A
	10-1796	4,8	R	R	R	R	R	SS	R	R	SS	N/A
	10-1754	5,6	R	R	R	SS	PR	SS	R	R	PR	N/A
	1759	4,1	R	R	R	SS	R	SS	PR	PR	R	N/A
	11.1990	5,5	PR	PR	R	R	R	PR	R	R	PR	PR
	10-1836	5	PR	PR	PR	PR	PR	PR	SS	PR	PR	N/A
	1991	4,2	PR	PR	PR	PR	PR	PR	PR	PR	PR	N/A
	10-1900	3,5	PR	PR	PR	PR	PR	PR	PR	PR	PR	N/A
	11-1963	6,4	PR	PR	PR	PR	PR	PR	PR	PR	PR	N/A
	10-1876	3,4	PR	PR	R	PR	PR	PR	R	R	R	N/A
	2002	4,1	R	R	R	PR	SS	SS	R	R	R	PR

R = Resistant, PR = Possible resistant, SS = sensitive.