Size and growth in 33 countries and regions, with clinical trials and research from public sources.
Active trials by country (ClinicalTrials.gov)
"–" means we have no size for that place yet. 2033 values are projected from the 2023 size and the CAGR. Regions count only the countries we report on for trials.
ClinicalTrials.gov lists 11,396 active trials worldwide (recruiting, about to start or running), most of them in the US, as of 10 Nov 2026.
PubMed lists about 2,727 papers on the topic since 2021.
Sources: market size and growth: Acuitas Health Analytics research (2023 base year, forecasts to 2033). Trials: ClinicalTrials.gov. Research: PubMed (US National Library of Medicine). Fetched 10 Nov 2026. Trials and papers are found by search words, so counts are a guide.