Neurocognitive disorders are measured using Frascati 3-stage classification and Global Deficit Score, after the following 10 standardized battery test: Grooved Pegboard for dominant and non-dominant hand, Grefex Verbal Fluency, California Verbal Learning Test (CVLT), Digit Span Wechsler Adult Intelligence Scale III, modified Paced Auditory Serial Addition Test (60 items), WAIS III Digit Symbol Test, Trail Making Test A&B, recall of CVLT and Wisconsin Card Sorting Test; and after the Beck Depression Inventory II (BDI), Inventory of Activity Daily Living part II (IADL) and 10-items Cognitive Complaint Questionnaire (CCQ). The global CNS Penetration Effectiveness (CPE) score of ARV treatment are the sum of the scores of each ARV the patient received, according to the last published scoring. For each drug class, we considered treatment intensification only for drugs with CPE score reaching at least 3 (no intensification if switch in same drug class with same CPE score). CPE score was corrected by drugs resistance status, using cumulative genotype interpreted with the 2012 ANRS algorithm (www.hivfrenchresistance.org; v.2012) at inclusion (CPE=0 if resistance).