Dolutegravir, Monotherapy, Primary HIV Infection, Treatment Efficacy
Conditions
Brief summary
Long term toxicity of combination antiretroviral therapy (cART) is a substantial contributor to morbidity and mortality in chronically infected HIV positive individuals. To date it is still debated, whether long term nucleoside reverse transcriptase inhibitors (NRTI's) -sparing regimens are practicable or even superior compared to standard of care cART in terms of efficacy, safety and tolerability. In addition, data about efficacy of integrase inhibitor (INSTI) based monotherapy is lacking. We aim at investigating the efficacy of standard of care combination antiretroviral therapy with a simplified dolutegravir monotherapy in patients with a primary HIV-1 infection under suppressive early standard of care antiretroviral therapy. Briefly, hundred-thirty-eight patients with a documented primary HIV1- infection (PHI) will be recruited from the Zurich Primary HIV-1 Infection Study (ZHPI), which is an open label, non-randomized, observational, single-center study (http://clinicaltrials.gov, ID 5 NCT00537966). All subjects formerly underwent early cART consisting of either a protease inhibitor (PI) or a non-nucleoside reverse transcriptase inhibitor (NNRTI) or a INSTI in combination with two NRTIs at the time point of enrolment in the ZPHI and must be under a fully suppressive ART (i.e., \<50 copies/ml) for at least 48 weeks at the time point of randomisation. The primary end point is the proportion of individuals with a viral failure at week 48 or before.
Interventions
DRUGDolutegravir
92 patients will be simplified to once daily dolutegravir monotherapy
DRUGStandard of care combinational antiretroviral therapy
Sponsors
University of Zurich
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
* Informed Consent as documented by signature, * All patients ≥18 years with a documented primary HIV-infection undergoing standard of care cART (i.e., one active drug from the class of either the PIs, or the NNRTIs, or the INSTIs, in combination with two active drugs from the class of NRTIs) with no previous structured treatment interruption and with a suppressed viral load (defined as 50 copies/ml) during the previous 48 weeks, * Participant of the Swiss HIV Cohort Study
Exclusion criteria
* Patients not willing to sign the informed consent form, * Presence of ≥1 major integrase inhibitor resistance associated mutation according to the Sanford algorithm1, * History of ≥2 consecutive plasma viremia levels \>400 copies/ml at least two weeks apart, * Ongoing (i.e., replicating) hepatitis B virus infection, * Hemoglobin \< 10 g/dl (men) and \< 9 g/dl (women) at the time of enrolment, * Contraindications to the class of drugs under study, e.g. known hypersensitivity or allergy to class of drugs or the investigational product, * Women who are pregnant or breast feeding, * Intention to become pregnant during the course of the study, * Lack of safe contraception, * Other clinically significant concomitant disease states (e.g., renal failure, hepatic dysfunction, cardiovascular disease, etc.), * Known or suspected non-compliance, drug or alcohol abuse, * Inability to follow the procedures of the study, e.g. due to language problems, psychological disorders, dementia, etc. of the participant, * Participation in another study with investigational drug within the 30 days preceding and during the present study, * Previous enrolment into the current study, * Enrolment of the investigator, his/her family members, employees and other dependent persons.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Proportion of individuals with a viral failure [defined as ≥2 plasma viremia levels >50copies/ml at least two weeks apart] at week 48 or before. | 48 weeks | The study seeks primarily to determine the efficacy (i.e., proportion of patients with a viral failure \[defined as ≥2 plasma viremia levels \>50copies/ml at least two weeks apart\] at week 48 or before) of a simplified monotherapy (i.e., DTG) compared to a standard of care HIV triple-therapy in patients with a PHI treated with early ART under long term suppressive ART for at least 48 weeks. |
Secondary
| Measure | Time frame |
|---|---|
| Proportion of individuals with a CSF HIV-1 RNA <50copies/ml in the CSF at week 48 after treatment simplification. | Week 48 |
| Proportion of patients with an adverse event at week 48. | Week 48 |
| Proportion of patients with a severe adverse event at week 48. | Week 48 |
| Time to viral failure (defined as ≥2 plasma viremia levels >50copies/ml at least two weeks apart) at week 48. | Week 48 |
| Proportion of individuals with blips (defined as one viral load >50 and <400 copies/ml with a next viral load <50 copies/ml) at week 48. | Week 48 |
| Change from baseline CD4+ cell count from baseline at week 48. | Week 48 |
| Quantification of latent HIV-1 reservoir by measurement of proviral DNA and cell-associated RNA at baseline (time point of randomization), and at week 48 | Week48 |
| Creatinine clearance change from baseline at week 48. | Week 48 |
| Lipidic profile changes from baseline at week 48. | Week 48 |
| Proportion of individuals developing a new CDC-event at week 48. | Week 48 |
| Proportion of individuals withdrawing consent at week 48. | Week 48 |
| Proportion of individuals being lost to follow-up at week 48. | Week 48 |
| Proportion of individuals switching assigned treatment for any cause at week 48. | Week 48 |
| Proportion of individuals with new onset of proximal tubular renal dysfunction at week 48. | Week 48 |
Countries
Switzerland
Outcome results
None listed