Genetic Genealogy Faces Challenges in Nancy Guthrie Disappearance

DNA expert outlines limitations law enforcement faces in using investigative genetic genealogy to identify a suspect

Published on Feb. 23, 2026

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Investigators have turned to genetic genealogy in a bid to track down a suspect in the disappearance of 84-year-old Nancy Guthrie, the mother of Today co-host Savannah Guthrie. However, an expert on genetic genealogy has explained a significant issue that law enforcement face when using the investigative method - the DNA evidence can only be uploaded to smaller databases that allow law enforcement access, which have under 2 million profiles compared to the larger consumer DNA databases that bar law enforcement access.

Why it matters

The case highlights the limitations of investigative genetic genealogy, which has become an increasingly important tool for law enforcement in solving cold cases and identifying suspects. While the method has proven successful in some high-profile cases, it relies on having access to large DNA databases, which the major consumer companies have so far refused to provide to authorities.

The details

CeCe Moore, the chief genetic genealogist at Parabon NanoLabs, explained that investigators can only upload the DNA evidence from the Nancy Guthrie case to the smaller databases that allow law enforcement access, such as GEDMatch, FamilyTreeDNA, and DNA Justice. These databases together have under 2 million profiles, compared to the 25 million and 12 million profiles in the larger AncestryDNA and 23andMe databases, respectively, which bar law enforcement access. Moore noted that this significantly limits the chances of quickly identifying a suspect through genetic genealogy, as the smaller databases are less likely to contain close genetic matches.

  • Nancy Guthrie was reported missing from her home on February 1, 2026.
  • On February 10, 2026, authorities released surveillance footage showing a masked man outside Guthrie's front door on the night she disappeared.
  • The FBI later released a description of the person they called a suspect.

The players

Nancy Guthrie

An 84-year-old grandmother who was reported missing from her home on February 1, 2026. Authorities believe she was taken against her will, and her blood was found on her porch.

Savannah Guthrie

The co-host of the Today show and Nancy Guthrie's daughter.

CeCe Moore

The chief genetic genealogist at Parabon NanoLabs, who explained the limitations of investigative genetic genealogy in the Nancy Guthrie case.

Pima County Sheriff's Office

The law enforcement agency investigating Nancy Guthrie's disappearance.

FBI

The federal law enforcement agency assisting in the investigation and releasing information about a suspect.

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What they’re saying

“As long as you have a viable DNA sample, that you can create one that is workable for genetic genealogy from that, then it is eventually solvable. That person can be identified. Of course, there's a lot of caveats right now. Do they actually have the suspect's DNA or not? So that's a big if.”

— CeCe Moore, Chief Genetic Genealogist, Parabon NanoLabs (NewsNation)

“We still have hope and we still believe. And I wanted to say to whoever has her or knows where she is that it's never too late. And you're not lost or alone. And it is never too late to do the right thing. And we are here. And we believe in the essential goodness of every human being, that it's never too late.”

— Savannah Guthrie (Instagram)

What’s next

The Pima County Sheriff's Department said all evidence from the crime scene and search warrant scenes has been submitted for analysis, and lab experts are working through that analysis. The FBI is also assisting in the investigation and has released a description of a suspect.

The takeaway

This case highlights the limitations of investigative genetic genealogy, which relies on access to large DNA databases that the major consumer companies have so far refused to provide to law enforcement. While the method has been successful in some cases, it faces significant challenges in cases like Nancy Guthrie's, where the available DNA databases are much smaller and less comprehensive.