Efficacy data for PIFELTRO® (doravirine)
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DRIVE-SHIFT: In a 48-week study of virologically suppressed adults with HIV-1 who changed regimens, a doravirine-based FDCa demonstrated:
DRIVE-SHIFT: Powerful virologic suppression1
aDoravirine-based FDC (fixed-dose combination) = doravirine 100 mg/lamivudine 300 mg/tenofovir disoproxil fumarate 300 mg tablets.
DRIVE-SHIFT: In a 144-week extension phase (week 48 to week 144)
DRIVE-SHIFT: Virologic suppression was assessed2
Participants who completed the week 48 visit were eligible to continue receiving open-label DOR/3TC/TDF for an additional 96 weeks, up to week 144.1,2
bParticipants had no virologic data at 144 weeks primarily due to treatment discontinuation for reasons other than adverse events or death.
Limitation: No formal statistics testing was planned for this updated analysis, and, therefore, no statistical conclusions can be drawn.
DRIVE-FORWARD: In a 96-week clinical trial, PIFELTRO demonstrated:
DRIVE-FORWARD: Durable efficacy compared to boosted DRV in treatment-naïve adults3,4
20% of patients at baseline had HIV-1 RNA >100,000 copies/mL. PIFELTRO showed consistent virologic suppression regardless of baseline viral load.
View DRIVE-FORWARD study design
Study designs
DRIVE-SHIFT study design
A randomized, multicenter, active-controlled, non-inferiority, open-label, phase 3 trial of adult participants with virologically suppressed HIV-1 for ≥6 months on 2 NRTIs with a PI plus either ritonavir or cobicistat, elvitegravir plus cobicistat, or an NNRTI, with no history of virologic failure. Participants were either immediately switched to a doravirine-based FDC (100 mg DOR/300 mg 3TC/300 mg TDF) on day 1 of the 48-week trial (Immediate Switch Group [ISG; n=447]) or continued their baseline regimen and switched after 24 weeks (Delayed Switch Group [DSG; n=223]) to a doravirine-based FDC.1,2
Extension study: Participants who completed the 48-week visit were eligible to continue receiving an open-label doravirine-based FDC for an additional 96 weeks, up to week 144.1,2
Primary efficacy end point: Percentage of participants with HIV-1 RNA ≥50 copies/mL in the ISG at week 48 vs the DSG at week 24: 2% for the doravirine-based FDC vs 1% for the baseline regimen. Difference (95% CI): 0.7 (-1.3, 2.6).1
Additional efficacy end point: Percentage of participants with HIV-1 RNA <50 copies/mL in the ISG at week 48 vs the DSG at week 24: 91% for the doravirine-based FDC vs 95% for the baseline regimen.1
Safety end point: For participants whose baseline regimen included a PI plus ritonavir: Mean change from baseline to week 24 in fasting LDL-C and non-HDL-C.1
DRIVE-FORWARD study design
A randomized, multicenter, double-blind, active-controlled, non-inferiority, phase 3 trial comparing PIFELTRO 100 mg once daily (n=383) vs darunavir 800 mg + ritonavir 100 mg once daily (n=383), each in combination with 2 NRTIs, FTC/TDF or ABC/3TC selected by the investigator, in treatment-naïve adult participants with HIV-1 RNA ≥1000 copies/mL.3,4
Primary efficacy end point: Percentage of participants with HIV-1 RNA <50 copies/mL at week 48 for PIFELTRO + 2 NRTIs vs DRV/r + 2 NRTIs: 84% vs 80%. Difference (95% CI): 3.9 (-1.6, 9.4).3
Secondary efficacy end point: Percentage of participants with HIV-1 RNA <50 copies/mL at week 96 for PIFELTRO + 2 NRTIs vs DRV/r + 2 NRTIs: 72% vs 65%. Difference (95% CI): 7.5 (1.0, 14.1).4
Safety end point: Mean change from baseline to week 48 in fasting LDL-C and non-HDL-C.3
DRIVE-AHEAD study design
A randomized, multicenter, double-blind, active-controlled, non-inferiority, phase 3 trial comparing a doravirine-based FDC (100 mg DOR/300 mg 3TC/300 mg TDF) once daily (n=364) vs 600 mg EFV/200 mg FTC/300 mg TDF once daily (n=364) in treatment-naïve adult participants with HIV-1 RNA ≥1000 copies/mL.5,6
Primary efficacy end point: Percentage of participants with HIV-1 RNA <50 copies/mL at week 48 for a doravirine-based FDC vs EFV/FTC/TDF: 84% vs 81%. Difference (95% CI): 3.5 (-2.0, 9.0).5
Secondary efficacy end point: Percentage of participants with HIV-1 RNA <50 copies/mL at week 96 for a doravirine-based FDC vs EFV/FTC/TDF: 77% vs 74%. Difference (95% CI): 3.8 (-2.4, 10.0).6
Primary safety end point: Percentage of participants with three pre-specified neuropsychiatric events (dizziness, sleep disorders/disturbances, and altered sensorium) at week 48.5,a,b
- Dizziness: 9% for doravirine-based FDC vs 37% for EFV/FTC/TDF. Difference (95% CI): -28.3 (-34.0, -22.5); P<0.001
- Sleep disorders and disturbancesc: 12% for doravirine-based FDC vs 26% for EFV/FTC/TDF. Difference (95% CI): -13.5 (-19.1, -7.9); P<0.001
- Altered sensoriumd: 4% for doravirine-based FDC vs 8% for EFV/FTC/TDF. Difference (95% CI): -3.8 (-7.6, -0.3); P=0.033
Safety end point: Mean change from baseline to week 48 in fasting LDL-C and non-HDL-C.5
an=364 for each treatment group.
bThe 95% CIs were calculated using Miettinen and Nurminen’s method.
cPredefined using MedDRA preferred terms, including: abnormal dreams, hyposomnia, initial insomnia, insomnia, nightmare, sleep disorder, and somnambulism.
dPredefined using MedDRA preferred terms, including: altered state of consciousness, lethargy, somnolence, and syncope.
Acronyms
3TC, lamivudine; ABC, abacavir; DOR, doravirine; DRV/r, darunavir/ritonavir; EFV, efavirenz; FDC, fixed-dose combination; FTC, emtricitabine; HDL-C, high-density lipoprotein-cholesterol; LDL-C, low-density lipoprotein-cholesterol; MedDRA, Medical Dictionary for Regulatory Activities; NNRTI, non-nucleoside reverse transcriptase inhibitors; NRTI, nucleoside reverse transcriptase inhibitors; PI, protease inhibitor; RNA, ribonucleic acid; TDF, tenofovir disoproxil fumarate.
References
- Johnson M, Kumar P, Molina JM, et al; for the DRIVE-SHIFT Study Group. Switching to doravirine/lamivudine/tenofovir disoproxil fumarate (DOR/3TC/TDF) maintains HIV-1 virologic suppression through 48 weeks: results of the DRIVE-SHIFT trial. J Acquir Immune Defic Syndr. 2019;81(4):463-472. doi:10.1097/QAI.0000000000002056.
- Kumar P, Johnson M, Molina JM, et al; for the DRIVE-SHIFT Study Group. Switching to DOR/3TC/TDF maintains HIV-1 virologic suppression through week 144 in the DRIVE-SHIFT trial. J Acquir Immune Defic Syndr. 2021;87(2):801-805. doi: 10.1097/QAI.0000000000002642.
- Molina JM, Squires K, Sax PE, et al; for the DRIVE-FORWARD Study Group. Doravirine versus ritonavir-boosted darunavir in antiretroviral-naive adults with HIV-1 (DRIVE-FORWARD): 48-week results of a randomised, double-blind, phase 3, non-inferiority trial. Lancet HIV. 2018;5(5):e211-e220. Epub 2018 Mar 25. doi: 10.1016/S2352-3018(18)30021-3.
- Molina JM, Squires K, Sax PE, et al; for the DRIVE-FORWARD Study Group. Doravirine versus ritonavir-boosted darunavir in antiretroviral-naive adults with HIV-1 (DRIVE-FORWARD): 96-week results of a randomised, double-blind, non-inferiority, phase 3 trial. Lancet HIV. 2020;7(1):e16-e26. Epub 2019 Nov 15. doi: 10.1016/S2352-3018(19)30336-4.
- Orkin C, Squires KE, Molina JM, et al; for the DRIVE-AHEAD Study Group. Doravirine/lamivudine/tenofovir disoproxil fumarate is non-inferior to efavirenz/emtricitabine/tenofovir disoproxil fumarate in treatment-naive adults with human immunodeficiency virus-1 infection: week 48 results of the DRIVE-AHEAD trial. Clin Infect Dis. 2019;68(4):535-544. doi: 10.1093/cid/ciy540.
- Orkin C, Squires KE, Molina JM, et al. Doravirine/lamivudine/tenofovir disoproxil fumarate (TDF) versus efavirenz/emtricitabine/TDF in treatment-naive adults with human immunodeficiency virus type 1 infection: week 96 results of the randomized, double-blind, phase 3 DRIVE-AHEAD noninferiority trial. Clin Infect Dis. 2021;73(1):33-42. doi: 10.1093/cid/ciaa822.