The Institute for Religious Research is a United States Christian apologetics organization based in Grand Rapids, Michigan. It declares itself to be a non-denominational, non-profit Christian foundation for the study of religious claims, and was formerly known as Gospel Truths Ministries. IRR is a member of Evangelical Ministries to New Religions and was headed by Luke P. Wilson until his death in 2007. Concurrent with the release of The DaVinci Code, the Baptist Press noted IRR's Ronald V.