The following table summarizes all those studies currently undergoing (human) clinical trials. Clinical trials follow years of extensive laboratory research, which can involve years of experiments in animal and human cells. The table below summarizes those which are currently underway using Artemisia annua or its derivatives.
Phase I studies assess the safety of a drug or device.
Phase II studies test the efficacy of a drug or device.
Phase III studies involve randomized and blind testing in several hundred to several thousand patients.
Phase IV studies, often called Post Marketing Surveillance Trials, are conducted after a drug or device has been approved for consumer sale. They are typically used to find other indications the drug could be potentially useful at treating.
Source and further reading: https://www.centerwatch.com/clinical-trials/overview.aspx