Clinical trials update 2015: Year in review.

This section of Headache annually reviews the status of recently completed and ongoing major clinical trials involving common headache disorders. The review will focus on multicenter trials of new therapies, as well as novel formulations of previously approved therapeutics. The Table summarizes the major therapeutic headache trials that were ongoing at the end of 2015, according to data obtained from both the "ClinicalTrials.Gov" website and from corporate press releases and presentations.