EACS 2019: ViiV Healthcare to present 17 abstracts from its portfolio addressing the diverse needs of people living with HIV

Data presentations expand understanding of ViiV Healthcare’s pipeline for heavily treatment-experienced populations, and look deeper into its 2-drug regimen studies

London, 6 November 2019 – ViiV Healthcare, the global specialist HIV company majority-owned by GSK, with Pfizer Inc. and Shionogi Limited as shareholders, announced today that 17 abstracts from its portfolio of late-stage pipeline and approved HIV treatments will be presented at the 17^th European AIDS Conference (EACS 2019) in Basel, Switzerland, 6-9 November.

Advances in research and development combined with the availability of effective medicines are changing the HIV landscape beyond 3-drug regimens which have been the mainstay of HIV treatment. ViiV Healthcare has been an integral part of this shift with the development of the 2-drug regimens (2DR) Dovato^[1] (dolutegravir/lamivudine) and in partnership with Janssen, Juluca (dolutegravir/rilpivirine).  Together with Janssen, ViiV healthcare is also working on cabotegravir and rilpivirine long-acting, an investigational long-acting injectable regimen. We are continuing to expand our innovative treatment portfolio by developing fostemsavir, a first-in-class treatment for people living with HIV (PLHIV) who have very few or no treatment options left available to them.

Kimberly Smith, MD, Head of Research & Development at ViiV Healthcare, said: “Since ViiV Healthcare’s inception 10 years ago, we have used our experience in drug development and the time we have spent getting to know people living with HIV to create research into innovative treatments that meet their diverse and changing needs. At EACS 2019, we are presenting data that take a deeper look at how different populations, including women and those who are heavily treatment-experienced, can benefit from our treatment innovations, to give us a fuller understanding of outcomes in these populations.”

Key ViiV Healthcare abstracts to be presented at EACS 2019

Presenting data for ViiV Healthcare’s long-acting cabotegravir and Janssen’s rilpivirine in women

• Efficacy rates of long-acting cabotegravir and rilpivirine in women at Week 48, from the pooled ATLAS and FLAIR studies[i]

 

Expanding our understanding of fostemsavir in heavily treatment-experienced (HTE) PLHIV

• Genotypic and phenotypic results for fostemsavir in HTE participants with HIV-1 at 96 weeks, from the phase 3 BRIGHTE study[ii]
• Impact of susceptibility scoring on virologic response in HTE participants with HIV-1 on a fostemsavir-based regimen: week 96 results from the phase 3 BRIGHTE study[iii]

Further data for Dovato[2] 2DR from the landmark GEMINI and TANGO studies

GEMINI 1 & 2 studies

• Assessments of very low-level HIV replication for dolutegravir and lamivudine vs dolutegravir + tenofovir disoproxil/emtricitabine (TDF/FTC) in the GEMINI 1 & 2 studies through week 96[iv]

TANGO study

• Week 48 subgroup analysis assessing efficacy outcomes in participants on dolutegravir/lamivudine versus a tenofovir alafenamide (TAF)-based regimen[v]
• Week 48 data showing that switching to dolutegravir/lamivudine from a 3-drug TAF-based regimen was not associated with a higher frequency of intermittent viremia[vi]

Treatment outcomes in real-world populations: continuing to evaluate effectiveness post-approval for Juluca 2DR 

Real-world evidence comparing Juluca (dolutegravir/rilpivirine) to standard 3-drug regimens[vii]

The full list of data that will be presented by ViiV Healthcare at EACS 2019 is listed below:

 

Cabotegravir and rilpivirine long-acting regimen

Format	Title of abstract	Author/ presenter	Abstract/ poster number	Time (CET)/ location
Oral	Outcomes for women in phase 3 trials of long-acting cabotegravir + rilpivirine: pooled ATLAS & FLAIR week 48 results	Romina Quercia	PS1/1	Event Hall 7 Nov 10:20-10:35

Dovato (dolutegravir/lamivudine)*

Format	Title of abstract	Author/ presenter	Abstract/ poster number	Time (CET)/ location
Oral	Assessments of very low-level HIV replication for dolutegravir + lamivudine (DTG+3TC) vs dolutegravir + tenofovir disoproxil/emtricitabine (DTG+TDF/FTC) in the GEMINI 1 & 2 studies through week 96	Mark Underwood	PS8/2	Event Hall 8 Nov 10:15 – 10:30
Oral	Switching to DTG/3TC fixed dose combination (FDC) is non-inferior to continuing a TAF-based regimen (TBR) through 48 weeks: subgroup analyses from the TANGO study	Jean van Wyk	PS7/2	Boston 1 – 3 7 Nov 14:20 - 14:40
ePoster	Switching from a 3-drug tenofovir alafenamide (TAF)-based regimen (TBR) to a 2-drug dolutegravir/lamivudine (2DR, DTG/3TC FDC) was not associated with a higher frequency of intermittent viremia in suppressed patients in the TANGO study	Ruolan Wang	PE3/15	Exhibition hall 6 Nov 12:45 – 20:00 7 Nov 9:00 – 18:00 8 Nov 9:00 – 18:00

Dolutegravir

Format	Title of abstract	Author/ presenter	Abstract/ poster number	Time (CET)/ location
Oral	Dolutegravir (DTG) use during pregnancy and birth outcomes: data from the antiretroviral pregnancy registry (APR)	Vani Vannappagari	PS1/2	Event Hall 7 Nov 10:35 – 10:50
ePoster	Population pharmacokinetic analysis of dolutegravir in HIV/TB co-infected people with and without rifampicin	Rajendra Singh	PE35/9	Exhibition hall 6 Nov 12:45 – 20:00 7 Nov 9:00 – 18:00 8 Nov 9:00 – 18:00

Juluca (dolutegravir/rilpivirine)

Format	Title of abstract	Author/ presenter	Abstract/ poster number	Time (CET)/ location
ePoster	SWORD 1&2: Maintenance or improvement in renal function in PLWH through 148 weeks after switch to the dolutegravir + rilpivirine 2-drug regimen	Josep Llibre	PE32/11	Exhibition hall 7 Nov 9:00 – 18:00 8 Nov 9:00 – 18:00
ePoster	Comparison of a two-drug regimen (dolutegravir/rilpivirine) to standard three-drug regimens in virologically suppressed, treatment experienced individuals in the real world	Gerald Pierone	PE2/37	Exhibition hall 6 Nov 12:45 – 20:00 7 Nov 9:00 – 18:00 8 Nov 9:00 – 18:00

Fostemsavir

Format	Title of abstract	Author/ presenter	Abstract/ poster number	Time (CET)/ location
ePoster	Baseline and emergent genotypic and phenotypic results in HIV-1-infected, heavily treatment-experienced (HTE) participants meeting protocol-defined virologic failure (PDVF) criteria through Week 96 in the fostemsavir (FTR) phase 3 BRIGHTE study	Peter Ackerman	PE17/6	Exhibition hall 7 Nov 12:30 – 13:15
ePoster	Impact of susceptibility scoring on virologic response in heavily treatment-experienced participants with HIV-1 receiving a fostemsavir-based antiretroviral regimen: results through Week 96 from the randomized cohort of the phase 3 BRIGHTE study	Peter Ackerman	PE3/5	Exhibition hall 6 Nov 12:45 – 20:00 7 Nov 9:00 – 18:00 8 Nov 9:00 – 18:00

Triumeq (DTG/ABC/3TC)

Format	Title of abstract	Author/ presenter	Abstract/ poster number	Time (CET)/ location
ePoster	Real world data of using Triumeq (dolutegravir/abacavir/lamivudine (DTG/ABC/3TC): final outcomes of the 3-year German TRIUMPH cohort show good virologic effectiveness and safety in clinical routine	Nils Postel	PE2/57	Exhibition hall 6 Nov 12:45 – 20:00 7 Nov 9:00 – 18:00 8 Nov 9:00 – 18:00

Additional abstracts

Format	Title of abstract	Author/ presenter	Abstract/ poster number	Time (CET)/ location
Oral	A simple tool to evaluate the effectiveness of HIV care for settings with gaps in data availability	Dorthe Raben	PS9/2	San Francisco 8 Nov 10:45 – 11:00
Oral	Uptake and discontinuation of integrase inhibitors (INSTIs) in the RESPOND cohort collaboration	Lauren Greenberg	PS8/7	Event hall 8 Nov 11:45 – 11:55
ePoster	Characterizations of weight gain following antiretroviral regimen initiation in treatment-naive individuals living with HIV	Ricky Hsu	PE2/32	Exhibition hall 6 Nov 12:45 – 20:00 7 Nov 9:00 – 18:00 8 Nov 9:00 – 18:00
ePoster	How to RESPOND to modern challenges for people living with HIV: a new cohort collaboration	Bastian Neesgaard	PE2/33	Exhibition hall 6 Nov 12:45 – 20:00 7 Nov 9:00 – 18:00 8 Nov 9:00 – 18:00
ePoster	Virologic, immunologic and clinical outcomes in antiretroviral treatment (ART) naïve individuals in the RESPOND cohort collaboration	Amanda Mocroft	PE2/40	Exhibition hall 6 Nov 12:45 – 20:00 7 Nov 9:00 – 18:00 8 Nov 9:00 – 18:00
ePoster	PK/PD modelling of bnAbs for HIV treatments identifying knowledge gaps	Mark Baker	PE4/6	Exhibition hall 6 Nov 12:45 – 20:00 7 Nov 9:00 – 18:00 8 Nov 9:00 – 18:00

About cabotegravir

Cabotegravir is an investigational integrase inhibitor (INI) and is not approved by regulatory authorities anywhere in the world. Cabotegravir is being developed by ViiV Healthcare for the treatment and prevention of HIV. It is being evaluated as a long-acting formulation for intramuscular injection and also as a once-daily oral tablet for use as a lead-in, to establish the tolerability of cabotegravir prior to long-acting injection.

 

About rilpivirine long-acting

Rilpivirine long-acting is an investigational, prolonged-release suspension for intramuscular injection being developed by Janssen Sciences Ireland UC, one of the Janssen Pharmaceutical Companies of Johnson & Johnson, and is not approved by regulatory authorities anywhere in the world.

 

About rilpivirine

Rilpivirine is a second-generation non-nucleoside reverse transcriptase inhibitor (NNRTI). It is authorised in the EU in combination with other antiretroviral medicinal products, for the treatment HIV-1.

 

About fostemsavir

Fostemsavir is an investigational prodrug of temsavir, an HIV-1 attachment inhibitor, and is not authorised by regulatory authorities anywhere in the world. Fostemsavir is being developed by ViiV Healthcare for the treatment of HIV-1-infected heavily treatment-experienced patients in combination with other antiretroviral agents.

 

About Dovato (dolutegravir/lamivudine)

Dovato (dolutegravir 50 mg/ lamivudine 300 mg tablets) is authorised in the EU for the treatment of HIV-1 infection in adults and adolescents above 12 years of age weighing at least 40 kg, with no known or suspected resistance to the integrase inhibitor class, or lamivudine.[viii] Dolutegravir/lamivudine is a once-daily, single-pill, two-drug regimen that combines the integrase strand transfer inhibitor (INSTI) dolutegravir (Tivicay, 50 mg) with the nucleoside analogue reverse transcriptase inhibitor (NRTI) lamivudine (Epivir, 300 mg).

 

In the US the Food and Drug Administration (FDA) authorised Dovato, a complete, once-daily, single-tablet regimen of dolutegravir (DTG) 50 mg and lamivudine (3TC) 300 mg for the treatment of HIV-1 infection in adults with no antiretroviral (ARV) treatment history and with no known resistance to either DTG or 3TC.[ix]

 

Like a dolutegravir-based three-drug regimen, dolutegravir/lamivudine uses two drugs to inhibit the viral cycle at two different sites. INSTIs, like dolutegravir, inhibit HIV replication by preventing the viral DNA from integrating into the genetic material of human immune cells (T-cells). This step is essential in the HIV replication cycle and is also responsible for establishing chronic infection. Lamivudine is an NRTI that works by interfering with the conversion of viral ribonucleic acid (RNA) into deoxyribonucleic acid (DNA) which in turn stops the virus from multiplying.

 

Important Safety Information for Dovato (50mg dolutegravir/300mg lamivudine) tablets in the EU

The following Important Safety Information is based on the Summary of Product Characteristics for Dovato. Please consult the full Summary of Product Characteristics for all the safety information.

Dovato (50mg dolutegravir/300mg lamivudine)

Dovato is indicated for the treatment of Human Immunodeficiency Virus type 1 (HIV-1) infection in adults and adolescents above 12 years of age weighing at least 40 kg, with no known or suspected resistance to the integrase inhibitor class, or lamivudine.

The recommended dose of Dovato in adults and adolescents is one 50 mg/300 mg tablet once daily.

Method of administration

Oral use. Dovato can be taken with or without food.

Contraindications

Hypersensitivity to the active substances or to any of the excipients listed in section 6.1.

Dose adjustments

A separate preparation of dolutegravir is available where a dose adjustment is indicated due to drug-drug interactions (e.g. rifampicin, carbamazepine, oxcarbazepine, phenytoin, phenobarbital, St. John’s wort, etravirine (without boosted protease inhibitors), efavirenz, nevirapine, or tipranavir/ritonavir. In these cases the physician should refer to the individual product information for dolutegravir.

Missed doses

If the patient misses a dose of Dovato, the patient should take Dovato as soon as possible, providing the next dose is not due within 4 hours. If the next dose is due within 4 hours, the patient should not take the missed dose and simply resume the usual dosing schedule.

 

Special warnings and precautions for use

Transmission of HIV

While effective viral suppression with antiretroviral therapy has been proven to substantially reduce the risk of sexual transmission, a residual risk cannot be excluded. Precautions to prevent transmission should be taken in accordance with national guidelines.

Hypersensitivity reactions

Hypersensitivity reactions have been reported with dolutegravir, and were characterized by rash, constitutional findings, and sometimes, organ dysfunction, including severe liver reactions. Dovato and other suspect medicinal products should be discontinued immediately if signs or symptoms of hypersensitivity reactions develop (including, but not limited to, severe rash or rash accompanied by raised liver enzymes, fever, general malaise, fatigue, muscle or joint aches, blisters, oral lesions, conjunctivitis, facial oedema, eosinophilia, angioedema). Clinical status including liver aminotransferases and bilirubin should be monitored. Delay in stopping treatment with Dovato or other suspect active substances after the onset of hypersensitivity may result in a life-threatening allergic reaction.

Weight and metabolic parameters

An increase in weight and in levels of blood lipids and glucose may occur during antiretroviral therapy. Such changes may in part be linked to disease control and life style. For lipids, there is in some cases evidence for a treatment effect, while for weight gain there is no strong evidence relating this to any particular treatment. For monitoring of blood lipids and glucose reference is made to established HIV treatment guidelines. Lipid disorders should be managed as clinically appropriate.

Liver disease

Patients with chronic hepatitis B or C and treated with combination antiretroviral therapy are at an increased risk of severe and potentially fatal hepatic adverse reactions. In case of concomitant antiviral therapy for hepatitis B or C, please refer also to the relevant product information for these medicinal products.

Dovato includes lamivudine, which is active against hepatitis B. Dolutegravir lacks such activity. Lamivudine monotherapy is generally not considered an adequate treatment for hepatitis B, since the risk for hepatitis B resistance development is high. If Dovato is used in patients co-infected with hepatitis B an additional antiviral is therefore generally needed. Reference should be made to treatment guidelines.

If Dovato is discontinued in patients co-infected with hepatitis B virus, periodic monitoring of both liver function tests and markers of HBV replication is recommended, as withdrawal of lamivudine may result in an acute exacerbation of hepatitis.

Patients with pre-existing liver dysfunction, including chronic active hepatitis have an increased frequency of liver function abnormalities during combination antiretroviral therapy, and should be monitored according to standard practice. If there is evidence of worsening liver disease in such patients, interruption or discontinuation of treatment must be considered.

Immune Reactivation Syndrome

In HIV-infected patients with severe immune deficiency at the time of institution of combination antiretroviral therapy (CART), an inflammatory reaction to asymptomatic or residual opportunistic pathogens may arise and cause serious clinical conditions, or aggravation of symptoms. Typically, such reactions have been observed within the first few weeks or months of initiation of CART. Relevant examples are Cytomegalovirus retinitis, generalised and/or focal mycobacterial infections, and Pneumocystis jirovecii pneumonia (often referred to as PCP). Any inflammatory symptoms should be evaluated and treatment instituted when necessary. Autoimmune disorders (such as Graves’ disease and autoimmune hepatitis) have also been reported to occur in the setting of immune reactivation; however, the reported time to onset is more variable and these events can occur many months after initiation of treatment.

Liver chemistry elevations consistent with immune reconstitution syndrome were observed in some hepatitis B and/or C co-infected patients at the start of dolutegravir therapy. Monitoring of liver chemistries is recommended in patients with hepatitis B and/or C co-infection.

Osteonecrosis

Although the aetiology is considered to be multifactorial (including corticosteroid use, biphosphonates, alcohol consumption, severe immunosuppression, higher body mass index), cases of osteonecrosis have been reported in patients with advanced HIV-disease and/or long-term exposure to CART. Patients should be advised to seek medical advice if they experience joint aches and pain, joint stiffness or difficulty in movement.

Opportunistic infections

Patients should be advised that dolutegravir, lamivudine or any other antiretroviral therapy does not cure HIV infection and that they may still develop opportunistic infections and other complications of HIV infection. Therefore, patients should remain under close clinical observation by physicians experienced in the treatment of these associated HIV diseases.

 

Undesirable effects

The most frequently reported adverse reactions are headache (3%), diarrhoea (2%), nausea (2%) and insomnia (2%).

The most severe adverse reaction reported with dolutegravir was a hypersensitivity reaction that included rash and severe liver effects.

Tabulated list of adverse reactions is available in the full information leaflet.

Changes in laboratory biochemistries

Dolutegravir has been associated with an increase in serum creatinine occurring in the first week of treatment when administered with other antiretroviral medicinal products. Increases in serum creatinine occurred within the first four weeks of treatment with dolutegravir plus lamivudine and remained stable through 48 weeks. These changes are linked to the inhibiting effect of dolutegravir on renal tubular transporters of creatinine. The changes are not considered to be clinically relevant and do not reflect a change in glomerular filtration rate.

Co-infection with Hepatitis B or C

In the Phase III studies for the dolutegravir single agent, patients with hepatitis B and/or C co-infection were permitted to enrol provided that baseline liver chemistry tests did not exceed 5 times the upper limit of normal (ULN). Overall, the safety profile in patients co-infected with hepatitis B and/or C was similar to that observed in patients without hepatitis B or C co-infection, although the rates of AST and ALT abnormalities were higher in the subgroup with hepatitis B and/or C co-infection for all treatment groups. Liver chemistry elevations consistent with immune reconstitution syndrome were observed in some subjects with hepatitis B and/or C co-infection at the start of dolutegravir therapy, particularly in those whose anti-hepatitis B therapy was withdrawn.

Drug interactions

No drug interaction studies have been conducted using Dovato. Dovato contains dolutegravir and lamivudine, therefore any interactions identified for these individually are relevant to Dovato. No clinically significant drug interactions are expected between dolutegravir and lamivudine.

The recommended dose of dolutegravir is 50 mg twice daily when co-administered with rifampicin, carbamazepine, oxcarbazepine, phenytoin, phenobarbital, St. John’s wort, etravirine (without boosted protease inhibitors), efavirenz, nevirapine, or tipranavir/ritonavir.

Dovato should not be co-administered with polyvalent cation-containing antacids. Polyvalent cation-containing antacids are recommended to be taken 2 hours after or 6 hours before Dovato.

When taken with food, Dovato and supplements or multivitamins containing calcium, iron or magnesium can be taken at the same time. If Dovato is administered under fasting conditions, supplements or multivitamins containing calcium, iron or magnesium are recommended to be taken 2 hours after or 6 hours before Dovato.

Dolutegravir increased metformin concentrations. A dose adjustment of metformin should be considered when starting and stopping coadministration of Dovato with metformin, to maintain glycaemic control. Metformin is eliminated renally and, therefore, it is of importance to monitor renal function when co-treated with Dovato. This combination may increase the risk for lactic acidosis in patients with moderate renal impairment (stage 3a creatinine clearance 45– 59 mL/min) and a cautious approach is recommended. Reduction of the metformin dose should be highly considered.

The combination of Dovato with cladribine is not recommended.

Dovato should not be taken with any other medicinal product containing dolutegravir or lamivudine, except where a dose adjustment of dolutegravir is indicated due to drug-drug interactions.

Other established and theoretical interactions with selected antiretrovirals and non-antiretroviral medicinal products are listed in the full information leaflet.

Fertility, pregnancy and lactation

Women of childbearing potential

Women of childbearing potential (WOCBP) should undergo pregnancy testing before initiation of Dovato. WOCBP who are taking Dovato should use effective contraception throughout treatment.

Pregnancy

The safety and efficacy of a dual regimen has not been studied in pregnancy. Preliminary data from a surveillance study has suggested an increased incidence of neural tube defects (0.9%) in mothers exposed to dolutegravir (a component of Dovato) at the time of conception compared with mothers exposed to non-dolutegravir containing regimens (0.1%).

The incidence of neural tube defects in the general population ranges from 0.5-1 case per 1,000 live births (0.05-0.1%). As neural tube defects occur within the first 4 weeks of foetal development (at which time the neural tubes are sealed) this potential risk would concern women exposed to dolutegravir at the time of conception and in early pregnancy. Due to the potential risk of neural tube defects with dolutegravir, Dovato should not be used during the first trimester unless there is no alternative.

More than 1000 outcomes from second and third trimester exposure to dolutegravir in pregnant women indicate no evidence of increased risk of malformities and foeto/neonatal negative effects. However, as the mechanism by which dolutegravir may interfere in human pregnancy is unknown, the safety in use during the second and third trimester cannot be confirmed. Dovato should be used during pregnancy only if the expected benefit justifies the potential risk to the foetus.

In animal reproductive toxicology studies with dolutegravir, no adverse development outcomes, including neural tube defects, were identified. Dolutegravir was shown to cross the placenta in animals.

A large amount of data on the use of lamivudine in pregnant women (more than 3000 outcomes from first trimester) indicates no malformative toxicity.

Animal studies showed lamivudine may inhibit cellular DNA replication (see section 5.3). The clinical relevance of these findings is unknown.

Mitochondrial dysfunction

Nucleoside and nucleotide analogues have been demonstrated in vitro and in vivo to cause a variable degree of mitochondrial damage. There have been reports of mitochondrial dysfunction in HIV-negative infants exposed in utero and/or post-natally to nucleoside analogues, these have predominantly concerned treatment with regimens containing zidovudine. The main adverse reactions reported are haematological disorders (anaemia, neutropenia), and metabolic disorders (hyperlactatemia, hyperlipasemia). These reactions have often been transitory. These findings do not affect current national recommendations to use antiretroviral therapy in pregnant women to prevent vertical transmission of HIV.

Breast-feeding

It is unknown whether dolutegravir is excreted in human milk. Available toxicological data in animals has shown excretion of dolutegravir in milk. In lactating rats that received a single oral dose of 50 mg/kg at 10 days postpartum, dolutegravir was detected in milk at concentrations typically higher than blood.

Based on more than 200 mother/child pairs treated for HIV, serum concentrations of lamivudine in breastfed infants of mothers treated for HIV are very low (< 4% of maternal serum concentrations) and progressively decrease to undetectable levels when breastfed infants reach 24 weeks of age. There are no data available on the safety of lamivudine when administered to babies less than three months old.

It is recommended that HIV infected women do not breast-feed their infants under any circumstances in order to avoid transmission of HIV.

Fertility

There are no data on the effects of dolutegravir or lamivudine on human male or female fertility. Animal studies indicate no effects of dolutegravir or lamivudine on male or female fertility.

Effects on ability to drive and use machines

Dovato has no or negligible influence on the ability to drive and use machines. Patients should be informed that dizziness and somnolence has been reported during treatment with dolutegravir. The clinical status of the patient and the adverse reaction profile of Dovato should be borne in mind when considering the patient’s ability to drive or operate machinery.

 

Please refer to the full European Summary of Product Characteristics for Dovato

for full prescribing information, including contraindications, special warnings and precautions for use. For the US, please refer to the US Prescribing Information.

[viii] Dovato EU Summary of Product Characteristics, 2019.

[ix] Dovato US prescribing information, 2019.