Car Door DNA Was “Too Complex to Interpret” - TrueAllele® Resolved the Mixtures and Guilty Pleas Followed
Case summary
Andre Roberts was shot and killed in a vehicle. The lab reported DNA mixtures collected from the car door handles as “too complex to interpret.” TrueAllele re-interpretation of the lab’s data resolved the door-handle mixtures and statistically placed both the victim and a defendant in the car. The case ended with a guilty plea to third-degree murder with a 10-20 year prison sentence.
What the lab report said
- The DNA mixture data from the car door handles was “too complex to interpret.”
Why this mattered for the investigation
- In homicide cases, vehicle touch DNA often includes multiple contributors. When the results come back as “too complex,” critical evidence placing a person in the vehicle may be undiscovered. This case shows that “too complex” does not always mean “no value.”
What was submitted
- The lab’s electronic DNA data for the car door handle items.
What changed after TrueAllele interpretation
- TrueAllele resolved the door handle mixtures and statistically included both the victim and defendant in the DNA data from the vehicle.
Outcome
- Guilty plea to third-degree murder with a 10-20 year sentence.
Case Takeaways
If your homicide case has vehicle mixtures and the lab report says “too complex to interpret” (or similar language):
- Request the electronic DNA data files (.fsa or .hid) for the key items (door handles, steering wheel, seatbelt, etc.) and reference profiles, including allelic ladder files.
- Request a Free TrueAllele Screening.
- If screening results look promising, expand to the next most probative items.
For more information on what to request from the lab, see the Sending Cases for TrueAllele Processing page.
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We don’t retest physical evidence items. We interpret the electronic DNA data a lab already generated.