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Table 2 Non nucleoside RT inhibitor (NNRTI) resistance mutations: percentages occurrence in patients treated with duo nucleoside RT inhibitor plus NNRTI first -line antiretroviral (ARV) regimens

From: HIV type 1 drug resistance patterns among patients failing first and second line antiretroviral therapy in Nairobi, Kenya

ARV Regimen n. 103 106 181 188 190 A98 V108 Y184 K70
NNRTI NRTI   NS M C LCH ASEQ G IV V KT
   60 n (%) n (%) n (%) n (%) n (%) n (%)    
Efavenz (EFV) containing regiments           
EFV TDF/3TC 3 1 - 1 (33.3) - 1 (33.3)    1 (33.3) 1 (33.3)
  AZT/3TC 15 5 (33.3) - - - -     
Sub-Total   18 6 (30) - 1 (5.6) - 1 (5.6)     
Nevirapine (NVP) containing regiments           
NVP D4T/3TC 4 - - - - - -    
  TDF/3TC 3 2 (66.7) - - - 1 (33.3) -    
  AZT/3TC 18 1 (11.1) - - 1 (5.6) 2 (11.1) -    
Sub-Totals   25 3 (19.2) - - 1 (3.8) 3 (11.5) -    
PI            
Lopinavir (LPV)/Ritinovir containing regiments          
LPV/R ABC/DDI 1 - - 1 (100) - - 1 (100)    
  ABC/3TC 2 - - - - - -    
  AZT/3TC 7 - - - - - -    
  AZT/DDI 5 1 (20) 1 (20) - - - - 1 (20)   
  TDF/ABC 2 1 (50)   - - 1 (50) -   1  
Sub-Totals (n = %)   17 2 (10) 1 (5) 1 (5) - 2 (10) 1 (5)   2  
Totals   60 11 (18.3) 1 (1.6) 2 (3.2) 1 (1.6) 6 (9.4) 1 (1.6) 1 (1.6) 1 (1.6) 1 (1.6)