cross-over study – where patients in a study ‘roll-over’ to a second related study. For example, this can be after a fixed period in a study (ie after 48 weeks) or after another event (for example, not having a treatment response).
Glossary
Selected words and phrases
HCV – hepatitis C, a virus that causes liver disease.
SC (sub-cutaneous) – under the skin. See IV (intravenous) and IM (intra-muscular).
microbicide – a gel that may protect against infection.In reference to HIV, this is usually referring to a gel that could be applied before sex. In 2010 a study called Caprisa 004 provided the first evidence that a microbicide (in this case a gel containing the HIV drug tenofovir) might protect against HIV infection.
adverse event – an unexpected or unwanted effect during a research study. Sometimes this used to describe a side effect from a drug.
Although all side effects are adverse events, not all adverse events are side effects.