Combined bictegravir, emtricitabine and tenofovir alafenamide for treating people with HIV: a plain language summary of the BICSTaR study up to 1 year

What is this summary about?: This is a summary of an article about an ongoing study called the BICSTaR study. The BICSTaR study includes people with HIV (human immunodeficiency virus) who are taking a medicine called bictegravir/emtricitabine/tenofovir alafenamide (shortened to B/F/TAF). B/F/TAF is a single tablet that contains 3 different drugs for the treatment of HIV. The drugs work together to reduce the levels of HIV so that the virus can no longer be detected by a blood test. People taking part in the study are adults with HIV living in Europe, Canada, Israel, Japan, South Korea, Singapore and Taiwan. People take 1 tablet of B/F/TAF once a day. They are either taking B/F/TAF as their first treatment for HIV, or they have switched to B/F/TAF from another HIV treatment. Researchers looked at how well B/F/TAF worked and how safe it was in people who took B/F/TAF for a year. What are the key takeaways?: Researchers found that B/F/TAF worked well in almost all people in the study by reducing levels of HIV in the blood. The virus could not be found in the blood of more than 9 out of 10 (94%) people who were taking B/F/TAF as their first HIV medicine and more than 9 out of 10 people (97%) who had taken another HIV medicine before starting B/F/TAF. This is known as having an ‘undetectable viral load’ and is a major goal for HIV treatment success. Researchers did not find any evidence of HIV developing resistance to B/F/TAF, which might stop B/F/TAF from working properly. Around 1 out of 10 people (13%) had side effects (any unwanted sign or symptom that people have when taking a medicine that researchers think might be caused by the medicine) that might have been caused by B/F/TAF. Most of these side effects were not classified as serious. Less than 1 out of 100 (0.1%) people had serious side effects that might have been caused by B/F/TAF. Only 6 out of 100 people stopped taking B/F/TAF due to side effects caused by B/F/TAF. As a result, more than 9 out of 10 people (95%) took B/F/TAF for at least 1 year. What were the main conclusions reported by the researchers?: B/F/TAF worked well in people with HIV in this study. Most people (around 9 out of 10) did not have any side effects.