NewStats: 3,264,365 , 8,183,480 topics. Date: Tuesday, 10 June 2025 at 06:37 PM 6w6f18

A large clinical trial in South Africa and Uganda has shown that a twice-yearly injection of a new pre-exposure prophylaxis drug gives young women total protection from HIV infection.

The trial tested whether the six-month injection of lenacapavir would provide better protection against HIV infection than two other drugs, both daily pills. All three medications are pre-exposure prophylaxis (or PrEP) drugs.

Physician-scientist Linda-Gail Bekker, principal investigator for the South African part of the study, tells Nadine Dreyer what makes this breakthrough so significant and what to expect next.

Tell us about the trial and what it set out to achieve

The Purpose 1 trial with 5,000 participants took place at three sites in Uganda and 25 sites in South Africa to test the efficacy of lenacapavir and two other drugs.

Lenacapavir (Len LA) is a fusion capside inhibitor. It interferes with the HIV capsid, a protein shell that protects HIV's genetic material and enzymes needed for replication. It is istered just under the skin, once every six months.

The randomised controlled trial, sponsored by the drug developers Gilead Sciences, tested several things.

The first was whether a six-monthly injection of lenacapavir was safe and would provide better protection against HIV infection as PrEP for women between the ages of 16 and 25 years than Truvada F/TDF, a daily PrEP pill in wide use that has been available for more than a decade.

Secondly, the trial also tested whether Descovy F/TAF, a newer daily pill, was as effective as F/TDF. The newer F/TAF has superior pharmacokinetic properties to F/TDF. Pharmacokinetic refers to the movement of a drug into, through, and out of the body. F/TAF is a smaller pill and is in use among men and transgender women in high-income countries.

The trial had three arms. Young women were randomly assigned to one of the arms in a 2:2:1 ratio (Len LA: F/TAF oral: F/TDF oral) in a double blinded fashion. This means neither the participants nor the researchers knew which treatment participants were receiving until the clinical trial was over.

In eastern and southern Africa, young women are the population who bear the brunt of new HIV infections. They also find a daily PrEP regimen challenging to maintain, for a number of social and structural reasons.

During the randomised phase of the trial none of the 2,134 women who received lenacapavir contracted HIV. There was 100 percent efficiency.

By comparison, 16 of the 1,068 women (or 1.5%) who took Truvada (F/TDF) and 39 of 2,136 (1.8%) who received Descovy (F/TAF) contracted the HIV virus.

The results at a recent independent data safety monitoring board review led to the recommendation that the trial's "blinded" phase should be stopped and all participants should be offered a choice of PrEP.

This board is an independent committee of experts who are put in place at the start of a clinical trial. They see the unblinded data at stipulated times during the trial to monitor progress and safety. They ensure that a trial does not continue if there is harm or a clear benefit in one arm over others.

What is the significance of these trials?
This breakthrough gives great hope that we have a proven, highly effective
prevention tool to protect people from HIV.

There were 1.3 million new HIV infections globally in the past year. Although that's fewer than the 2 million infections seen in 2010, it is clear that at this rate we are not going to meet the HIV new infection target that UNAIDS set for 2025 (fewer than 500,000 globally) or potentially even the goal to end Aids by 2030.

PrEP is not the only prevention tool.

PrEP should be provided alongside HIV self-testing, access to condoms, screening and treatment for sexually transmitted infections and access to contraception for women of childbearing potential.

https://www.sciencealert.com/new-hiv-prevention-drug-shows-100-efficacy-in-clinical-trial

More money for the pharmaceutical companies

JuanDeDios:

It's the normal order of things: you make something useful and you get paid. Big pharma has its issues, but it also does a lot of good. Demonising them solves no problem.

It’s the way you choose to interpret my statement that is funny.

A farmer plants on his land, for instance, reaps bountifully without drought, disease or herders clash. If I say “more money for the farmer” upon harvest or pre-harvest does that imply I’m demonizing the farmer?

Up medical world. My fear is that any drug that demonstrates clinical proficiency against HIV-AIDS may means a more heighten in moral deprivity and reckless sexual behaviours. God help our world.

Time to dey knack raw

Nothing concern me but E dey mind

Ok

Fornicators right now.

These ones want many NGOs to be out of jobs.

This is a good development,it would actually help people in need of it

Stale solution

Helinus should key into this great opportunity

😂 😂 😂 Raw mode activated

I’m So grateful for the bright minds who dedicate their lives to making the world a better and safer place for everyone.

Stale solution


Its only a new alternative.

Hope this too will be free

This one go increase level of immorality oooo 😂😂😂

Squeezer2024:
was it decreased b4?

Oga, things don't necessarily have to decrease for them to increase.

IYOO....


I don't know what to say. Honestly speaking.

ONYE ANWULU!!!

Mehn raw bangers right now 🤼🤼

You will find out later

Hmm

Hope it will work for men too. We men don't like bathing wearing clothes. If you know, you know

Agbadocassava:
Time to dey knack raw

HIV is not the only STD

Pharmacitical companies don hammer, cure wey dem don keep since them no go release am. As them dey cashout from the diseases, pastors too dey cashout for another corner with healing camps

Ashawo go be like:
#1500 with condom
#3000 raw

meum:
More money for the pharmaceutical companies

It's the normal order of things: you make something useful and you get paid. Big pharma has its issues, but it also does a lot of good. Demonising them solves no problem.

The cure to HIV is out there. Pharmaceutical companies will crash if the cure is approved to the public. Getting grants for trials is all that matters to them..

Racoon:
Up medical world. My fear is that any drug that demonstrates clinical proficiency against HIV-AIDS may means a more heighten in moral deprivity and reckless sexual behaviours. God help our world.

Seriously!?

meum:
More money for the pharmaceutical companies

Less death for HIV patients.

How did the companies stop you from reducing HIV deaths

welcomed development. We need more research into total cure for Diabetes, HBP and Cancer as well