CASO CLINICO Il paziente naϊve ad alta viremia Rapido sviluppo di resistenza ad EFV dopo solo 4 mesi di terapia Clinical Case: ID 13268 Patient Age 43 infected with HIV-1 CRF01_AE in 650 550 500 450 350 150 GRT December 2011 >500000 cps/ml PR: K20R, M36I, L63P, L89I, I93L RT: NONE GRT April 2012 PR: K20R, M36I, L63P, L89I, I93L RT: K103N, Y188H/Y Other pol mutations PR: I13V, Q18H/Q, E35D, N37D, R41K, K43R, H69K RT: E6D, V35T, T39K, K43E, D121D/H, I142V, S162A, K173I, Q174K, D177E, G196EG, I202IV, Q207A, R211S, V245E, A272P, V276IV, T286A, E291D, V292I, I293V, Undetectability threshold E312T, I326V Other pol mutations PR: T12I/T, I13V, E35D, N37D, R41K, K43R, H69K RT: E6D, V35T, T39K, K43E, F61F/L, D121H, K122E, I142V, S162A, K173I, Q174K, D177E, Q207A, R211S, V245E, A272P, V276I, T286A, E291D, V292I, I293V, E312T, I326V, Q334R, G335D Viremia: 624734 copies/ml Rapid appearance resistance to TDF and CD4: 19 cells/µl EFV after only four months of therapy 100 50 Feb-12 Jan-12 0 Dec-11 CDC stage C3 out DECEMBER 2011 – APRIL 2012 TDF+TFC+EFV Apr-12 200 I Seropositivity December 2011 6.5 Mar-12 250 in out On December 2011 400 300 Risk Factor Heterosex 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 Viremia (log copies/ml) CD4 cell count (cells/ul) 600 Sex F Clinical Case: ID 13268 Patient with HIV-1 CRF01_AE subtype Age 43 Sex F Risk Factor Heterosex I Seropositivity December 2011 CDC stage C3 Mutation scoring* for the protease PR Total: PR Total: ATV/r DRV/r FPV/r IDV/r LPV/r NFV SQV/r TPV/r 0 0 0 0 0 0 0 DRV/r FPV/r IDV/r LPV/r NFV SQV/r TPV/r 0 0 0 0 0 0 0 0 ATV/r 0 GRT December 2011 GRT April 2012 Mutation scoring* for the reverse transcriptase RT 3TC Total: RT ABC 0 3TC AZT 0 ABC D4T 0 AZT DDI 0 D4T FTC 0 DDI TDF 0 FTC EFV 0 TDF ETR 0 EFV 0 ETR NVP 0 NVP RPV 0 RPV K103N - - - - - - - 60 0 60 0 Y188H - - - - - - - 30 0 60 0 Total: 0 0 0 52 0 0 29 90 0 120 0 Susceptible virus Virus low level of resistance Virus intermediate resistance Virus high level of resistance GRT December 2011 GRT April 2012 * Stanford Algorithm (http:hivdb.stanford.edu)