Note: Phase 2 includes Phases 1/2, 2, 2a, 2b. Phase 3 includes Phase 2/3 and 3. Trials were industry sponsored; Terminated trials & medical devices were excluded from analysis. * As of November 2024.
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Clinical trials initiated worldwide 2018-2024, by trial phase
In 2023, there were 2,580 phase I clinical drug trials started, compared to 2,236 phase I trials initiated during the previous year. This statistic depicts the annual number of clinical trials started worldwide from 2018 to 2024, by trial phase.
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IQVIA, & EFPIA. (December 9, 2024). Number of clinical trials started worldwide from 2018 to 2024, by trial phase [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 21, 2026, from /statistics/1249010/clinical-trials-started-by-trial-phase-worldwide/
IQVIA, und EFPIA. "Number of clinical trials started worldwide from 2018 to 2024, by trial phase." Chart. December 9, 2024. ÌÇÐÄÆƽâ°æ. Accessed July 21, 2026. /statistics/1249010/clinical-trials-started-by-trial-phase-worldwide/
IQVIA, EFPIA. (2024). Number of clinical trials started worldwide from 2018 to 2024, by trial phase. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 21, 2026. /statistics/1249010/clinical-trials-started-by-trial-phase-worldwide/
IQVIA, and EFPIA. "Number of Clinical Trials Started Worldwide from 2018 to 2024, by Trial Phase." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 9 Dec 2024, /statistics/1249010/clinical-trials-started-by-trial-phase-worldwide/
IQVIA & EFPIA, Number of clinical trials started worldwide from 2018 to 2024, by trial phase ÌÇÐÄÆƽâ°æ, /statistics/1249010/clinical-trials-started-by-trial-phase-worldwide/ (last visited July 21, 2026)
Number of clinical trials started worldwide from 2018 to 2024, by trial phase [Graph], IQVIA, & EFPIA, December 9, 2024. [Online]. Available: /statistics/1249010/clinical-trials-started-by-trial-phase-worldwide/
