Timing of release of individual participant data from COVID-19 vaccine trials
| Phase 3 trial | Protocol released before results released? | Pledge to share IPD | Estimated date of availability (based on data sharing statement in protocol or publication) |
| Pfizer phase 2/3; 43 998 participants ( NCT04368728 ) | Yes | Yes | April 2025, based on statement in trial protocol that data will be made available ‘24 months after study completion’ |
| Moderna phase 3; 30 420 participants ( NCT04470427 ) | Yes | Unclear | October 2022, based on statement in trial publication that data “may be available … once the trial is complete” |
| Oxford/AstraZeneca phase 3; 10 300 participants ( ISRCTN89951424 ) | No | Yes | December 2021, based on statement in trial publication that trial data ‘will be made available when the trials are complete’ |
| Janssen (Johnson & Johnson) phase 3; 44 325 participants ( NCT04505722 ) | Yes | Yes | Unclear. April 2021 publication suggested data availability will begin ‘with publication,’ but as of June, still not listed on Yale Open Data Access Project website. |
| Novavax phase 3; 30 000 participants ( NCT04611802 ) | Yes | No* | We could not locate any other written statement regarding patient-level data sharing. It is not discussed in the trial protocol or publication. |
| Gamaleya Research Institute phase 3; 33 758 participants ( NCT04530396 ) | No | Yes* | May 2021, based on statement in trial publication that data will be made available ‘on completion of clinical trials’ |
| Sinopharm phase 3; 45 000 participants ( NCT04510207 ) | No | Yes | December 2022, based on statement in trial publication that data will be available between December 2022 and December 2027, with reasonable request to the sponsor and principal investigator. |
| Sinovac phase 3; 13 000 participants ( NCT04582344 ) | Yes | No* | We could not locate any other written statement regarding patient-level data sharing. It is not discussed in the full-length study protocol. Also, a structured summary of study protocol states ‘Not applicable’ under the availability of data and material. |
Data current as of 27 June 2021.
*According to the ‘Plan to Share IPD’ field in the ClinicalTrials.gov entry.
IPD, individual participant data.