Ambrosioni, JuanSued, OmarNicolás, DavidParera, MartaLópez-Diéguez, MaríaRomero, AnabelAgüero Santangelo, FernandoMarcos, Ma. AngelesManzardo, ChristianZamora, LauraGómez-Carrillo, ManuelGatell, José M.Pumarola Suñé, TomàsMiró Meda, José M. (José María), 1956-2016-02-032016-02-032015-06-031932-6203https://hdl.handle.net/2445/69204OBJECTIVES: To evaluate the prevalence of transmitted drug resistance (TDR) and non-B subtypes in patients with acute/recent HIV-1 infection in Barcelona during the period 1997-2012. METHODS: Patients from the "Hospital Clinic Primary HIV-1 Infection Cohort" with a genotyping test performed within 180 days of infection were included. The 2009 WHO List of Mutations for Surveillance of Transmitted HIV-1 Drug Resistance was used for estimating the prevalence of TDR and phylogenetic analysis for subtype determination. RESULTS: 189 patients with acute/recent HIV-1 infection were analyzed in 4 time periods (1997-2000, n=28; 2001-4, n=42; 2005-8, n=55 and 2009-12, n=64). The proportion of patients with acute/recent HIV-1 infection with respect to the total of newly HIV-diagnosed patients in our center increased over the time and was 2.18%, 3.82%, 4.15% and 4.55% for the 4 periods, respectively (p=0.005). The global prevalence of TDR was 9%, or 17.9%, 9.5%, 3.6% and 9.4% by study period (p=0.2). The increase in the last period was driven by protease-inhibitor and nucleoside-reverse-transcriptase-inhibitor resistance mutations while non-nucleoside-reverse-transcriptase inhibitor TDR and TDR of more than one family decreased. The overall prevalence of non-B subtypes was 11.1%, or 0%, 4.8%, 9.1% and 20.3 by study period (p=0.01). B/F recombinants, B/G recombinants and subtype F emerged in the last period. We also noticed an increase in the number of immigrant patients (p=0.052). The proportion of men-who-have-sex-with-men (MSM) among patients with acute/recent HIV-1 infection increased over the time (p=0.04). CONCLUSIONS: The overall prevalence of TDR in patients with acute/recent HIV-1 infection in Barcelona was 9%, and it has stayed relatively stable in recent years. Non-B subtypes and immigrants proportions progressively increased.14 p.application/pdfengcc by (c) Ambrosioni et al., 2015http://creativecommons.org/licenses/by/3.0/es/Persones seropositivesResistència als medicamentsAssaigs clínicsBarcelona (Catalunya)HIV-positive personsDrug resistanceClinical trialsBarcelona (Catalonia)info:eu-repo/semantics/article2016-02-02info:eu-repo/semantics/openAccess26039689