# Clinical Trial Readiness for Rare Diseases, Disorders, and Syndromes (R21 Clinical Trial Not Allowed)

> Federal funding opportunity · **POSTED** · National Institutes of Health · close: **07/20/2028**

## Key facts

- **Opportunity ID:** 359645
- **Opportunity number:** PAR-25-450
- **Agency:** National Institutes of Health
- **Status:** posted
- **Document type:** synopsis
- **Open date:** 09/22/2025
- **Close date:** 07/20/2028
- **CFDA codes:** 93.350, 93.865

## Primary source

Grants.gov opportunity detail: https://www.grants.gov/search-results-detail/359645

## Citation

> US Grants.gov, funding opportunity 359645 (PAR-25-450). Retrieved via AI Analytics 2026-05-18 from https://api.ai-analytics.org/opportunity/359645. Licensed CC0.

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*[Grants.gov dataset](/datasets/grants-gov) · CC0 1.0*