Cybergenetics remembers the World Trade Center victims

Back to Trials

People of New York v Kimani Stephenson

TrueAllele excludes defendent DNA in New York City case

Crime On April 14, 2017, a New York City woman was pushed from a subway platform onto the tracks. She was rescued and the attacker fled.
Evidence The victim’s jacket and dress were collected as evidence.
DNA The New York City Office of the Chief Medical Examiner crime lab created DNA mixture data from different areas of the clothing.
Match The lab was able to exclude the defendant from many of the dress and jacket samples. However, using thresholds, the lab could not include or exclude him from 3 sampled areas.
TrueAllele The computer separated the three “inconclusive” DNA mixtures into genotypes. Comparison with the defendant found exclusionary match statistics, down to one in 418 octillion. These very small numbers showed that Mr. Stephenson's DNA was not on the victim's clothing.
Cybergenetics    On June 29, 2018, DNA analyst Jennifer Hornyak testified before a New York City jury about the results.
Outcome On July 5, 2018, Mr. Stephenson was found guilty of assault and sex abuse, but acquitted of attempted murder.

  • Manhattan man, 24, arrested for groping, throwing actress to subway tracks NY Daily News
  • Actress recalls creepy moment she was groped, pushed onto subway tracks NY Post
  • Jury acquits man of attempted murder during sex assault Star Gazette