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Research Project Grant RPG  
An award made to an institution/organization to support discrete, specified, circumscribed projects to be performed by named investigators in areas representing their specific interest and competencies.

Research Project Grants and Cooperative Agreements include the following activity codes:

  • R00, R01, R03, R15, R21, R33, R34, R35, R36, R37, R50, R56, R61, RC1, RC2, RC3, RC4, RF1, RL1, RL2, RL9, P01, P42, PM1, PN1, RM1, UA5, UC1, UC2, UC3, UC4, UC7, UF1, UG3, UH2, UH3, UH5, UM1, UM2, U01, U19, U34, DP1, DP2, DP3, DP4, DP5.

NIH's most commonly used grant program is the Research Project Grant Program (R01).

Quoted from the NIH OER Glossary & Acronym List.