Same-day treatment start improves retention in care and viral suppression in Lesotho

Image from Dr Niklaus Labhardt’s presentation at CROI 2018.

Starting treatment at home, on the day of diagnosis, proved acceptable in rural Lesotho and resulted in improved linkage to care and viral suppression compared with routine care, Niklaus Labhardt of the Swiss Public Health Institute reported on Tuesday at the Conference on Retroviruses and Opportunistic Infections (CROI 2018) in Boston.

Dr Labhardt was reporting results of the CASCADE study, designed to overcome the loss of people with HIV between diagnosis after home-based testing, enrolment in HIV care and treatment initiation. A systematic review published in 2017 estimated that only one in three people diagnosed with HIV after home-based testing linked to care if they received a referral and that more active measures were needed to ensure higher rates of linkage to care.

The CASCADE study was carried out in the mountainous Butha-Buthe district where HIV care is provided by nurses at two hospitals and four health centres.

Glossary

linkage to care

Refers to an individual’s entry into specialist HIV care after being diagnosed with HIV. 

referral

A healthcare professional’s recommendation that a person sees another medical specialist or service.

virological suppression

Halting of the function or replication of a virus. In HIV, optimal viral suppression is measured as the reduction of viral load (HIV RNA) to undetectable levels and is the goal of antiretroviral therapy.

loss to follow up

In a research study, participants who drop out before the end of the study. In routine clinical care, patients who do not attend medical appointments and who cannot be contacted.

systematic review

A review of the findings of all studies which relate to a particular research question and which conform to pre-determined selection criteria. 

A home-based testing and counselling campaign was carried out in 60 villages and 17 urban areas, visiting 6660 households. The campaign tested 11,590 adults, and 441 tested HIV positive. Of those who tested positive, 278 were willing and eligible to participate (the study excluded pregnant women, people already in care and anyone who wished to attend a medical facility not taking part in the study). Willingness to participate required participants in the same-day initiation group to agree that they understood the implications of starting lifelong antiretroviral therapy after home-based counselling.

The final analysis included 274 people, 76% female, with a median age of 39 years. Almost half (46%) had not been in contact with a health facility for at least a year and half had to walk to a clinic. The median travel time to a clinic was one hour. The median CD4 cell count of study participants was 278 cells/mm3 and 16% had a CD4 cell count below 200 cells/mm3, indicating advanced HIV disease.

Participants were randomised to receive either a 30-day supply of antiretroviral drugs (a fixed combination of tenofovir, lamivudine and efavirenz) on the day of diagnosis after home-based testing, or a referral to a medical facility to initiate antiretroviral therapy.

The primary outcomes of the study were the proportion of participants in each arm who had linked to care within three months of diagnosis, and viral suppression below 100 copies/ml 12 months after diagnosis.

Same-day initiation resulted in significantly greater proportions linked to care within three months and virally suppressed 12 months later. 68.6% in the same-day arm and 43.1% in the standard-of-care arm linked to care within three months (P < 0.001). 50.4% in the in the same-day arm and 34.3% in the standard-of-care arm had suppressed viral load 12 months later.

The most commonly reported reason for not linking to care was 'too busy' (around 30% in each arm) but 25% in the same-day initiation arm and 30% in the standard-of-care arm were lost to follow-up and ten per cent said they did not understand that they should have attended care when traced by a community health worker.

Niklaus Labhardt, speaking at a press briefing after the presentation, said that the results were likely to be generalisable to other rural settings in sub-Saharan Africa where home-based testing and counselling is being implemented. A follow-up study will look at whether village health workers can initiate antiretroviral therapy after home-based testing.

References

Labhardt N et al. Same-day ART initiation after home-based HIV testing: a randomized controlled trial. 25th Conference on Retroviruses and Opportunistic Infections (CROI 2018), Boston, abstract 94, 2018.

View the abstract on the conference website.

Watch the webcast of this presentation on the conference website.

Labhardt N et al. Effect of offering same-day ART vs usual health facility referral during home-based HIV testing on linkage to care and viral suppression among adults with HIV in Lesotho: The Cascade randomized clinical trial. JAMA, advance online publication, 6 March 2018.