Main ContentThe Importance of Individualizing HIV Care
An Interactive Program on How to Select the Ideal Antiretroviral Therapy for Each Patient
Jointly provided by the Annenberg Center for Health Sciences at Eisenhower and ViralEd, Inc. in collaboration with Postgraduate Institute for Medicine. This activity is supported by an independent educational grant from Janssen Therapeutics, Division of Janssen Products, LP (source - external link)
(content from PowerPoint presentation)
Welcome and Introduction
Faculty: Wilbert Jordan, MD
Program Objectives
Upon completion of the program, participants should be better able to:
- Explain the importance of individualizing ARV therapy
- Individualize ARV therapy to improve treatment outcomes
- Employ the skills needed to gather knowledge regarding the patient and establish a trusting relationship that furthers the exchange of information between clinician and patient needed to accomplish individualization of care
What to Start
Which Antiretrovirals: 2015 Currently Available
NRTIs
- Abacavir
- Didanosine
- Emtricitabine
- Lamivudine
- Stavudine
- Tenofovir
- Zidovudine
NNRTIs
- Delavirdine
- Efavirenz
- Etravirine
- Nevirapine (XR)
- Rilpivirine
PIs
- Atazanavir**
- Darunavir**
- Fos-Amprenavir
- Indinavir
- Lopinavir
- Nelfinavir
- Ritonavir
- Saquinavir
- Tipranavir
Fusion Inhibitors
Entry Inhibitors
PK Booster
Integrase Inhibitors
- Raltegravir
- Elvitegravir*
- Dolutegravir
*Only available co-formulated with TDF/FTC; **atazanavir and darunavir available as individual drugs or co-formulated with cobicistat.
U.S. DHHS Guidelines January 2013: Four Preferred Regimens
NNRTI
- Efavirenz1/emtricitabine2/tenofovir DF3
PI
- Atazanavir4 + ritonavir + emtricitabine2/tenofovir DF3
- Darunavir + ritonavir (qd) + emtricitabine2/tenofovir DF3
INSTI
- Raltegravir + emtricitabine2/tenofovir DF3
- INSTI: Integrase strand transfer inhibitors.
- Efavirenz should not be used during the first trimester of pregnancy or in women trying to conceive or not using effective and consistent contraception.
- Lamivudine may substitute for emtricitabine or visa versa.
- Tenofovir DF should be used with caution in patients with renal insufficiency.
- Atazanavir + RTV should not be used in patients who require >20 mg omeprazole equivalent/day.
- Patients with creatinine clearance >70 mL/min.
- Patients who are HLA-B*5701 negative.
DHHS. Available at: http://www.aidsinfo.nih.gov/ContentFiles/AdultandAdolescentGL.pdf. Revision February 12, 2013.
DHHS. Available at: http://aidsinfo.nih.gov/contentfiles/AdultARV_INSTIRecommendations.pdf. Update October 30,2013.
DHHS Guidelines 10/2013 to 4/2014: What to Start: Seven Preferred Regimens
Preferred Regimens: Regimens with optimal and durable efficacy, favorable tolerability and toxicity profile, and ease of use
NNRTI
Boosted PI
- ATV/r + TDF/FTC
- DRV/r (once daily) + TDF/FTC
Integrase Inhibitor
- RAL + TDF/FTC
- EVG/cob/TDF/FTC
- DTG + TDF/FTC
- DTG + ABC/3TC
Available at: http://www.aidsinfo.nih.gov/ContentFiles/AdultandAdolescentGL.pdf. Revision Oct 30, 2013
DHHS Guidelines May 2014: Ten Recommended Regimens
NNRTI
- Efavirenz/emtricitabine/tenofovir DF
PI
- Atazanavir + ritonavir + emtricitabine/tenofovir DF
- Darunavir + ritonavir (QD) + emtricitabine/tenofovir DF
INSTI
- Raltegravir + emtricitabine/tenofovir DF
- Elvitegravir/cobicistat/emtricitabine/tenofovir DF
- Dolutegravir + abacavir/lamivudine
- Dolutegravir + emtricitabine/tenofovir DF
Additional options if the VL <5 log:
- Efavirenz + abacavir/lamivudine
- Atazanavir + ritonavir + abacavir/lamivudine
- Rilpivirine/tenofovir DF/emtricitabine (if CD4 count >200/mm3)
IAS-USA 2014 Guidelines Concur on All Ten Recommended Regimens
DHHS. Available at: http://aidsinfo.nih.gov/contentfiles/AdultARV_INSTIRecommendations.pdf. Update May 2014
DHHS Guidelines April 2015: Five Recommended Regimens
- PI
- Darunavir/ritonavir (DRV/r) + TDF/FTC
- INSTI
- Dolutegravir/abacavir/lamivudine (DTG/ABC/3TC) only for patients who are HLA-B*5701 negative
- DTG + tenofovir disoproxil fumarate/emtricitabine (TDF/FTC)
- Elvitegravir/cobicistat/TDF/FTC (EVG/c/TDF/FTC) only for patients with pre-ART CrCl >70 mL/min
- Raltegravir (RAL) + TDF/FTC
- On the basis of individual patient characteristics and needs, an Alternative regimen or; less frequently, an Other regimen; may in some instances be the optimal regimen for a patient.
- Given the large number of excellent options for initial therapy, selection of a regimen for a particular patient should be guided by factors such as virologic efficacy, toxicity, pill burden, dosing frequency, drug-drug interaction potential, resistance testing results, comorbid conditions, and cost.
DHHS. Available at: http://aidsinfo.nih.gov/contentfiles/lvguidelines/adultandadolescentgl.pdf. Update April 8, 2015
How Do We Choose from Among These Five Options?
Patient Characteristics:
- Pre-treatment virus resistance
- Risk of adverse events
- Rate and type of adverse events
- Type of evidence demonstrating the adverse event
- Other medical comorbidities
- CV, diabetes, renal, bone, psychological, and others
- Financial Concerns
- Patient copays, formulary restrictions, generics
Other Criteria You Use?
Criteria that ARE NOT Considered When Selecting a Regimen
- Age
- Beyond specific co-morbidity concerns
- Gender
- Race
- Weight/BMI
Case: Mr. CQM
- Mr. M comes in to start treatment
- He is a 24 yo BM
- His last HIV negative test was two years ago, tested positive six months ago
- Medical history
- Father had an MI at age 64-years-old
- The patient used to smoke
- Has been treated for STIs twice
- CD4 488
- HIV PCR 77,000
- HLA B*5701 neg
- HIV genotype - wildtype
How Do We Choose from Among These Five Options?
Drug Characteristics:
- BID vs. QD
- Raltegravir only recommended drug that is taken BID
- Most patients prefer qd over bid, and one pill over multiple
ACTG A5257 Study: Wk 96 Virologic Outcomes
ITT, Regardless of ART Change |
| RAL (n=603) | DRV/r (n=601) | ATV/r (n=605) |
HIV RNA <50 copies/mL (%) CD4 gain (cells/mm3) | 94 288 | 89 256 | 88 284 |
Any resistance (%) | 3 | <1 | 1.5 |
All patients received emtricitabine/tenofovir DF.
Landovitz RJ, et al. 21st CROI. Boston, 2014. Abstract 85.
Abbott 418 - Adherence by MEMS Caps: Once-daily vs. Twice-daily with the Same HAART
- QD vs BID LPV/r + TDF / FTC
- Weeks 84-96:
- % taken
- 93% vs. 81%, p=0.013
- Days with correct dosing:
- 85% vs. 65%, p<0.001
- % taken on time:
- 76% vs. 51%, p<0.001
% Taken -LPV/r QD vs. LPV/r BID graph source: Rode R, et al. 45th ICAAC; December 16–19, 2005; Washington D.C., Abstract H-522. (PDF - external link, page 2, Figure 1)
DHHS Guidelines April 2015: Five Recommended Regimens
PI
- Darunavir/ritonavir (DRV/r) + TDF/FTC
INSTI
- Dolutegravir/abacavir/lamivudine (DTG/ABC/3TC) only for patients who are HLA-B*5701 negative
- DTG + tenofovir disoproxil fumarate/emtricitabine (TDF/FTC)
- Elvitegravir/cobicistat/TDF/FTC (EVG/c/TDF/FTC) only for patients with pre-ART CrCl >70 mL/min
- Raltegravir (RAL) + TDF/FTC
DHHS. Available at: http://aidsinfo.nih.gov/contentfiles/lvguidelines/adultandadolescentgl.pdf. Update April 8, 2015
We Can Expand This
1. Atripla
2. Darunavir/rtv + Truvada (taf)
3. Complera (Odefsey)
4. Stribild (Genvoya)
5. Dolutegrivir + Truvada (taf)
6. Triumeq
7. Prezcobix + Truvada (taf)
A5202: Time to Virologic Failure by Baseline Viral Load ≥100,000 copies/mL (Week 192)
Hazard Ratio (95% CI) for 3TC/ABC vs FTC/TDF |
Favors 3TC/ABC | Favors FTC/TDF |
with either ATV + RTV or EFV1 | 2.33* on a scale from 1.46 to 3.72 |
with ATV + RTV2 | 2.22 on a scale from 1.19 to 4.14 |
with EFV2 | 2.46 on a scale from 1.20 to 5.05 |
0.05 | 1.0 | 5.0 |
Hazard Ratio |
N=797; median (25th, 75th) follow-up = 60 weeks (28, 84).
DSMB discontinues the high viral load 3TC/ABC arm due to higher virologic failure with 3TC/ABC versus FTC/TDF in HIV RNA ≥100,000 copies mL
*Log rank test P <.001
CI, confidence interval.
1 Sax PE, et al. N Engl J Med. 2009;361:2230-2240.
2 Daar ES, et al. CROI 2010. San Francisco, CA. Oral 59LB.
A5202: Time to Virologic Failure by Baseline Viral Load and CD4 Cell Count (Week 192)
Graph interpretation: Baseline Lower CD4 Cell Count or Higher Viral Load Associated with Increased Risk of Virologic Failure with ABC/3TC
Grant P, et al. CROI 2011. Boston, MA. #535.
How Do We Choose from Among These Five Options?
Food Requirements:
- Food required: on label for DRV/r, EVG/cob
- No concern re food: DTG, RAL
Effect of Food Type on the Mean Rilpivirine Pharmacokinetic Profile
Graph interpretation:
- Taking RPV with food increases RPV exposure by 40% compared to fasting
- Similar after a high-fat or standard breakfast.
- But – less food effect on RPV exposure for the RPV/FTC/TDF STR vs. RPV single agent:
- Diff of Fasting vs. fed comparison: ↓16% with STR vs. ↓43% as RPV alone
FDA Label: Recommended Dose: One tablet taken once daily with food
Crauwels HM, et al. IWCPHIV 2008. Abstract P32; Ramanathan S, et al. HIV-11 2012; Glasgow, UK. P068
How Do We Choose from Among These Options?
Drug Characteristics:
- BID vs. QD (or less?)
- Efficacy at any pre-treatment viral load and CD4 count
- Food requirements
- Number of pills per day (range 1-3)
- Potential drug-drug interactions
- Years of experience
- Barrier to resistance if viremic
US LifeLink Database: Predictors of Achieving ≥95% Adherence and Hospitalizations
Compared to ≥3 pill per day Regimens Predictors of Achieving 95% Adherence Threshold‡
Graph interpretation:
- QD STR was associated with a 62% increase (1.6 X more) chance for patients to be highly (> 95%) adherent to treatment (OR=1.62, p<0.001)
- QD STR was associated with a 24% decreased risk of hospitalization (OR=0.57, p<0.001).
- Consistent with previous research, this study demonstrates that providing ART as a STR is associated with potential clinical and economic benefits
Being on the STR:
- Associated with 24% lower risk of hospitalization (p=0.003) due to improved adherence vs. other regimens
Retrospective chart analysis; N=7,073 HIV+ pts; 6/2006 – 12/2008
* vs. 3 or more pills per day regimen
‡ Multivariate Logistic Regression
Sax P, et al. HIV10 2010. Glasgow. Oral #113
ART in the VA Healthcare System: Impact on Adherence and Outcomes
Graph interpretation: Patients in the STR arm had better adherence, fewer hospitalizations, and better chance to achieve HIV RNA <50 copies/mL compared with the MTR arm (P<0.001).1
STR: single-tablet regimen; MTR: multiple-tablet regimen.
*P<0.001. Odds ratios are adjusted for all baseline characteristics.
Rao G, et al. 53rd ICAAC. Denver, 2013. Abstract H-1464.
How Do We Choose from Among These Five Options?
Drug Characteristics:
- BID vs. QD (or less?)
- Efficacy at any pre-treatment viral load and CD4 count
- Food requirements
- Number of pills per day (range 1-3)
- Potential drug-drug interactions
- Years of experience
- Barrier to resistance if viremic
Potential drug-drug interactions
- Fewest: RAL, DTG - though there are a few
- DRV, EVG: inducer of CYP3A4
- RTV, Cobi: inhibitors of CYP3A4 and other isoenzymes
- Important role of the pharmacy /pharmacist
Indications and Usage
- DESCOVY® is a two-drug combination of emtricitabine (FTC) and tenofovir alafenamide (TAF)a, both HIV nucleoside analog reverse transcriptase inhibitors (NRTIs)
- DESCOVY is indicated, in combination with other antiretroviral agents, for the treatment of HIV-1 infection in adults and adolescent patients 12 years of age and older
- Limitations of Use
- DESCOVY is not indicated for use as pre-exposure prophylaxis (PrEP) to reduce the risk of sexually acquired HIV-1 in adults at high risk
a. Single-agent TAF has not been approved by the U.S. Food and Drug Administration and its safety and efficacy have not been established.
DESCOVY Prescribing Information. Gilead Sciences, Inc. 2016.
The TAF Component of DESCOVY is Expected to Result in Lower Concentrations of TFV in Plasma vs a 300 mg Dose of TDF
- TAF: A novel prodrug of TFV that is metabolized to TFV by cathepsin A in PBMCs and macrophages1
- In 2 trials of treatment-naive adults with HIV-1 infection, a 10 mg oral dose of TAF in FTC/TAF + EVG/COBI resulted in >90% lower concentrations of TFV in plasma as compared to a 300 mg oral dose of TDF in FTC/TDF + EVG/COBI (both coadministered as an STR)2,3
- In a pharmacokinetic study, the unboosted 25 mg of TAF in DESCOVY was demonstrated to be bioequivalent to the COBI-boosted 10 mg of TAF in FTC/TAF + EVG/COBI4
- The concentration of TFV in plasma may differ if DESCOVY is paired with a boosted protease inhibitor5
COBI, cobicistat; EVG, elvitegravir; PBMC, peripheral blood mononuclear cells; STR, single tablet regimen; TFV, tenofovir
1. DESCOVY Prescribing Information. Gilead Sciences, Inc. 2016. 2. GENVOYA Prescribing Information. Gilead Sciences Inc. 2016.
3. Sax P, et al. Lancet. 2015;385(9987):2606-15 4. Zack J, et al. J Bioequiv. 2016:8;49-54. 5. Data on File. Gilead Sciences, Inc.
Concomitant Use of HIV Drugs and HCV Drugs for Treatment of HCV in HIV-Infected Adults
HIV Drugs | HCV Drugs |
SOF | LDV/SOF | 3D | SMV | RBV | PegIFN |
3TC | √ | √ | √ | √ | √ | √ |
ABC | √ | √ | √ | √ | √ | √ |
FTC | √ | √ | √ | √ | √ | √ |
TDF | √ | √ (monitor for TDF toxicity) | √ | √ | √ | √ |
ZDV | √ | √ | √ | √ | X1 | X1 |
ATV (unboosted) | √ | √ | √2 | X | √ | √ |
ATV/r or ATV/c | √ | √3 | √4 | X | √ | √ |
DRV/r or DRV/c | √ | √3 | X | X | √ | √ |
FPV or FPV/r | √ | √3 | X | X | √ | √ |
LPV/r | √ | √3 | X | X | √ | √ |
SQV/r | √ | √3 | X | X | √ | √ |
TPV/r | X | X | X | X | √ | √ |
EFV | √ | √5 | X | X | √ | √ |
ETR | √ | √ | X | X | √ | √ |
NVP | √ | √ | X | X | √ | √ |
RVP | √ | √ | X | X | √ | √ |
DTG | √ | √ | ? | √ | √ | √ |
EVG/c/TDF/FTC | √ | X | X | X | √ | √ |
EVG (+ PI/r without COBI) | Refer to recommendations specific to each PI/r |
RAL | √ | √ | √ | √ | √ | √ |
MVC | √ | √ | X | √ | √ | √ |
√ = ARV agents that can be used concomitantly; X = ARV agents not recommended; ? = Data on PK interactions with the ARV drug are unavailable or insufficient to make a recommendation. 3D = Ombitasvir/paritaprevir/ritonavir + dasabuvir. 3. If PI/r [or ATV/c, DRV/c] is used with TDF, ↑TDF concentrations are expected. If co-administration necessary, monitor for TDF-associated toxicities. Consider alternative HCV or ARV therapy to avoid increases in TDF exposures. If co-administration is necessary, monitor for TDF-associated adverse reactions. 5. If EFV used with TDF/FTC, monitor for TDF toxicity due to ↑ TDF concentrations
http://aidsinfo.nih.gov/guidelines/html/1/adult-and-adolescent-arv-guidelines/26/hiv-hcv
How Do We Choose from Among These Five Options?
Drug Characteristics:
- BID vs. QD (or less?)
- Efficacy at any pre-treatment viral load and CD4 count
- Food requirements
- Number of pills per day (range 1-3)
- Potential drug-drug interactions
- Years of experience
- Barrier to resistance if viremic
Drug Characteristics:
- Barrier to resistance if viremic on treatment
- Boosted PIs and DTG: No primary mutations to drug detected, none (very low rate) of NRTI resistance
- RAL, EVG/c: NRTI mutation then InSTI resistance, at similar rates in clinical trials
Patient Characteristics:
- Pre-treatment virus resistance
- Risk of adverse events
- The rate of – and type of – adverse events
- Type of evidence demonstrating the adverse event
- Other medical comorbidities
- CV, diabetes, renal, bone, psychological, and others
- Financial Concerns
- Patient copays, formulary restrictions, generics
- Pre-treatment resistance testing
- Most common – NNRTIs (K103N) (but this is no longer critical since EFV and RPV are no longer part of recommended regimens)
- Lower – NRTIs (usually TAMs)
- Few – PIs
- Unclear impact if any on boosted PI efficacy
- Rare – Integrase
Drug Resistance Mutations in Treatment-Naïve HIV Patients (2000-2013)
Retrospective Analysis
- Analysis of pre-treatment samples from four phase 3 studies
- IN sequences (n=1617)
- PR-RT sequences (n=2531)
- Enrollment Years
- 2000 (study 903),
- 2003 (study 934),
- 2013 (studies 104 and 111)
Resistance-Associated Mutations at Baseline – graph interpretation:
- In this retrospective analysis, Margot and colleagues evaluated plasma samples from 4 phase 3 studies, prior to treatment, to determine the incidence of transmitted drug resistance in treatment-naïve patients (2000-2013). The evaluated 1617 IN sequences and 2531 PR-RT sequences.1
- They found little evidence of transmitted resistance among the integrase inhibitors while there was an increase in NNRTI and PI resistance and a stable presence of transmitted NRTI resistance mutations.1
Margot NA, et al. 21st CROI. Boston, 2014. Abstract 578.
Time to Suicidality, Primary Analysis
Graph interpretation at https://pubmed.ncbi.nlm.nih.gov/24979445/
*Person Years, sum of at-risk follow-up
How Do We Choose from Among These Options?
Patient Characteristics:
- Pre-treatment resistance testing
- Risk of Adverse Events
- Lab and Test Based:
- Lipids
- CV Risk
- Bone Demineralization
- Renal function
- Inflammatory Markers
SPIRIT Change in TC:HDL Ratio by Baseline Protease Inhibitor and NRTI
Graph interpretation at https://cahr-acrv.ca/wp-content/uploads/2012/10/CAHR-2013-Abstract-Book-FINAL.pdf (page 29A)
Brunetta J et al. 22nd CAHR April 11-14, 2013; Vancouver, Canada; Oral O064
ABC and Risk of MI: D:A:D
- Analysis of MI risk with ABC pre and post 3/08 in D:A:D cohort
- Trend of less ABC use in high risk individuals post 3/08
- MI rates
- Current/Recent ABC 0.47 (0.42-0.52)/1000 pt yrs of FU
- No ABC 0.21 (0.19-0.22)/1000 pt yrs of FU
- Overall RR with ABC 1.98 (1.72-2.29): Pre 3/08 1.97, Post 3/08 1.97
Graph at https://www.natap.org/2014/CROI/croi_191.htm (Figure 2)
Sabin C, et al. 21st CROI; Boston, MA; March 3-6, 2014. Abst. 747LB.
ABC Association with MI: FDA Meta-analysis
FDA Completed Trial-level Meta-analysis of 26 Completed RCTs of ABC in Adults, with N >50 Subjects |
| Events/Subjects | Risk Difference (95% CI) | Odds Ratio (95% CI) |
Studies | ABC | Non-ABC |
GSK | 6/2341 | 9/2367 | -0.11% (-0.43%, 0.21%) | 0.70 (0.25, 2.00) |
NIH | 12/1985 | 9/1610 | 0.03% (-0.45%, 0.51%) | 1.08 (0.43, 2.61) |
Academic | 6/702 | 4/863 | 0.31% (-0.53%, 1.16%) | 1.60 (0.46, 5.62) |
Overall | 24/5028 | 22/4840 | 0.008% (-0.26%, 0.27%) | 1.02 (0.56, 1.84) |
Ding X, et al. CROI 2011. Boston. #808. 2. De Pablo C, et al. CROI 2011. Boston. #815.
A5224s: Mean Percent Change in Lumbar Spine Bone Mineral Density
Graph interpretation at https://www.natap.org/2010/CROI/croi_20.htm
- Hip BMD: Significantly greater percent decline with FTC/TDF than ABC/3TC; not significant for NNRTI/PI
- No significant difference in fracture rate between arms
McComsey, G, et al. CROI 2010, 106LB.
ACTG 5257: Bone Mineral Density at 96 Weeks
Graph interpretation at https://www.natap.org/2014/CROI/croi_57.htm
Brown T, et al. 21st CROI; Boston, MA; March 3-6, 2014. Abst. 779.
Effects on Creatinine Tubular Transporter: Inhibiting Creatinine Secretion
Graph interpretation at https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6148882/ (Figure 2)
OCT2 = organic cation transporter 2
MATE1 = multidrug and toxin extrusion transporter 1
Benson, P, et al. 52nd ICAAC 2012.
Study 102: Week 144 Changes in Serum Cr from Baseline and from Week 4
Cohen C, et al. 14th EACS; Brussels, Belgium; October 16-19, 2013. Abst. PE7/13.
How Do We Choose from Among These Five Options?
Patient Characteristics:
- Pre-treatment virus resistance
- Risk of adverse events
- The rate and type of adverse events
- Type of evidence demonstrating the adverse event
- Other medical comorbidities
- CV, diabetes, renal, bone, psychological, and others
- Financial concerns
- Patient copays, formulary restrictions, generics
Economics: Antiretroviral Drugs Available in U.S. as a Generic Formulation
- Abacavir
- Didanosine
- Lamivudine
- Nevirapine
- Stavudine
- Zidovudine
- Zidovudine/lamivudine
Case: Mr. CQM
- Mr. M comes in to start treatment
- He is a 24 yo
- His last HIV negative test was two years ago, tested positive six months ago
- Your choice?
- What if :
- 1) He tested HLA +
- 2) Had a PCR > 200,000
- 3) Impressed you as being not to adherent
- 4) CD4 > 200, PCR 88,000
- 5) Was starting Hep C therapy
- 6 Was starting Hep C therapy and his CD4 44
How Do We Choose from Among These Five Options?
Summary
- Very little difference in virologic efficacy in pre-defined populations
- Fewer pills, once daily have advantages
- Some studies show advantage of tolerability over these
- Know your patients – make the choice together
- Lifestyle
- What will they tolerate
- Co-morbidities
- Drug-drug interaction
- Does cost effect their options
- Issues with stigma
- Early follow-up to assess if the choice was right
PrEP
PROUD: Open-Label PrEP Trial
- HIV negative, MSM engaging in unprotected anal intercourse in past 90 days in London, UK
- Willing to take a pill a day
- No contraindication to use of TDF/FTC
|
↓ Immediate PrEP Daily TDF/FTC N = 276 | ↓ Deferred PrEP until week 48 N = 269 |
- Follow-up at 3 month intervals
- Post-exposure prophylaxis provided
McCormack S, et al. 22nd CROI; Seattle, WA; February 23-26, 2015. Abst. 22LB.
PROUD: HIV Incidence
Group | No. of Infections | Follow-Up (PY) | Incidence (Per 100 PY) | 90% CI |
Overall | 22 | 453 | 4.9 | 3.4 – 6.8 |
Immediate | 3 | 239 | 1.3 | 0.4 – 3.0 |
Deferred | 19 | 214 | 8.9 | 6.0 – 12.7 |
- Efficacy = 86% (90% CI: 58 – 96%)
- P value = 0.0002
- Rate Difference = 7.6 (90% CI: 4.1 – 11.2)
- Number Needed to Treat = 13 (90% CI: 9 – 25)
McCormack S, et al. 22nd CROI; Seattle, WA; February 23-26, 2015. Abst. 22LB.
Ipergay: "On-Demand" PrEP Study Design
- Double blind, randomized placebo controlled trial to prevent HIV infection in France and Canada
- HIV negative MSM
- Anal sex without condoms with ≥2 partners in past 6 months
- eGRF >60 mL/min
| → | - Prevention services
- TDF/FTC before and after sex* (n=199)
|
→ | - Prevention services
- Placebo before and after sex* (n=201)
|
- Follow-up visits: month 1, 2, and every 2 months thereafter
- Endpoint driven study – with 64 infections there is 80% power to detect 50% reduction in infection rate in active arm
- Expected incidence 3/100 PY with placebo
* Two tablets 2-24 hours before sex; 1 tablet 24 hours later; 1 table 48 hours later
Molina JM, et al. 22nd CROI; Seattle, WA; February 23-26, 2015. Abst. 23LB.
Ipergay: Time to HIV Infection
Graph interpretation at https://www.iasusa.org/wp-content/uploads/2015/07/23-e1-5.pdf (page 10)
- Infections:
- Placebo: 14 (incidence: 6.6 per 100 PY)
- TDF/FTC: 2 (incidence: 0.94 per 100 PY)
- Relative Reduction: 86% (95% CI: 40–99%, p=0.002)
- Number needed to treat for one year to prevent one infection: 18
- Molina JM, et al. 22nd CROI; Seattle, WA; February 23-26, 2015. Abst. 23LB.
Partners Demo: PrEP & ART for Discordant Couples
Population
- Heterosexual discordant couples not using ART or PrEP in Kenya & Uganda
- At high risk for HIV transmission based on risk scoring tool
Intervention
- ART per national guidelines – treat all seropositive partners in discordant relationship
- PrEP – open label TDF/FTC until positive partner on therapy for 6 months as a 'bridge' to ART
Comparison
- Counterfactual simulation model, using bootstrapping data from Partner's PrEP Study with matching risk scores and follow-up
Baeten J, et al. 22nd CROI; Seattle, WA; February 23-26, 2015. Abst. 24.
Partners Demo: HIV Incidence
- 858 person years of follow-up
- 95% uptake of PrEP and 80% on ART
Graph interpretation from https://www.iasusa.org/wp-content/uploads/2015/07/23-e1-5.pdf (page 10)
Baeten J, et al. 22nd CROI; Seattle, WA; February 23-26, 2015. Abst. 24.
What is PrEP ?
- Truvada once daily
- Note: taf (tenofovir alafenamide or Descovy is NOT PrEP)
What Else to Consider?
- Test for HIV ab beforehand
- Test for Hep B
- If being treated for Hep B, you may need to amend treatment…contact the other treating physician
- Draw creatinine or CrCl > 60
- Give 3 months supply at most
- Re-evaluate in 3 months
Who Needs PrEP?
- MSM's
- MtF Transgenders
- Sex workers
- Female partners of MSM's
Physician comfort
- Patient does not need to disclose their sexuality…if they ask for it…explain what it is…if they still want it…prescribe it!
- Who covers:
- Most private insurances
- Public health offices in different locals
- Medicaid
- Medicare (?)
Questions