Investigators in the Nancy Guthrie disappearance say DNA from gloves did not match any entries in a national database. CODIS is a valuable storehouse of DNA taken from crime suspects or people with convictions. Any hits could identify possible suspects in the Guthrie saga, which reached a 17th day Tuesday. The 84-year-old mother of NBC “Today” co-anchor Savannah Guthrie was reported missing from her Tucson-area home on Feb. 1 after spending the previous night with family. Investigators are also working with experts to try to locate Nancy Guthrie by somehow detecting her heart pacemaker.