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Ancillary Studies


The National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) invites investigator-initiated research project applications for ancillary studies to ongoing studies such as those in the GpCRC supported by the Institute. The goal of any ancillary study must complement but not overlap or interfere with the primary and secondary objectives of  the GpCRC. Moreover, each applicant must agree to abide by GpCRC procedures for conducting these studies.

Qualified and interested investigators are invited to consult the GpCRC Ancillary Studies Policy below. We highly recommend investigators to explore the NIDDK Central Biorepository which includes the publicly available GpCRC clinical data and bio-samples collected in GpCRC. Please visit the NIDDK Central Biorepository for the completed GpCRC Registry studies: Gastroparesis Registry and Gastroparesis Registry 2 and completed treatment studies: APRON, NORIG, GLUMIT-DG. We also recommend that interested investigators contact one of the GpCRC Steering Committee liaisons  for potential collaborations and ancillary studies proposals. All proposed ancillary studies collaborations should be submitted to the Ancillary Studies Committee through the Scientific Data Research Center in time for subsequent review, prior to submission to a funding agency. The GpCRC Ancillary Studies and Steering Committees meet monthly with mutual aims to provide review and approval of internal and external ancillary studies and sample and data stewardship.

  • Ancillary Study Proposal (SP4) Form (.docx) - 26 Jan 2023



  Last updated:  10 February 2023
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