QUOTE OF THE DAY: New Jersey Supreme Court: "[T]he evidence presented at the Frye hearing—including the testimony by the State’s single expert witness—showed that there was no test supporting a finding that humans can produce the physical force necessary to cause the symptoms associated with SBS/AHT in a child. There is evidence of general acceptance by many in the medical community, but the State must also establish general acceptance in the biomechanical community, and it has failed to do so." New Jersey Supreme Court:
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SECOND QUOTE OF THE DAY: New Jersey Supreme Court: "It is therefore evident that the foundation of SBS/AHT lies in biomechanical science and engineering. A scientific community is either relevant or not for purposes of determining admissibility of scientific evidence at trial—degrees of relevance are not weighed. As in Olenowski II, there can certainly be more than one relevant scientific community for purposes of Frye. Here, the relevant scientific communities for purposes of determining the reliability of SBS/AHT expert testimony are both the medical/ pediatric community and the biomechanical engineering community."
COMMENTARY: Prosecutions own neuropathology reviewer testifies medical findings are too complex to confirm abuse in Tre Clay hearing," the Davis Vanguard (Publisher David Greenwald) reports on June 29, 2026. (David Greenwald is the founder, editor, and executive director of the Davis Vanguard. He founded the Vanguard in 2006. David Greenwald moved to Davis in 1996 to attend Graduate School at UC Davis in Political Science. He lives in South Davis with his wife Cecilia Escamilla Greenwald and three children.)
Tre Clay appeared in court represented by Deputy Public Defender Jeannette Garcia. Deputy District Attorney Elaine Kuo represented the prosecution.
The defense called Dr. Evan Matshes, chief forensic pathologist and medical director for NAG Forensic, who participated in the original neuropathology review conducted at the request of the Solano County Coroner’s Office.
The case stems from the January 2021 death of Elijah Clay.
Matshes testified that NAG Forensic received Elijah Clay’s brain, eye, cervical spine and spinal cord specimens from the Solano County Coroner’s Office in March 2021.
The examinations were conducted by forensic neuropathologist Dr. Vivian Snyder and underwent an extensive peer-review process because of the complexity of the case.
Summarizing the findings from that review, Matshes testified, “In short, that Elijah’s brain was very abnormal, that there was bleeding present, that was old and new, that there was brain pathology that was old and difficult to explain, that there was infection around his brain, the significance of which wasn’t known, that his spine was uninjured and that his eyes were uninjured.”
Garcia questioned Matshes about published recommendations he co-authored regarding infant autopsies.
Asked about the most important principles, Matshes testified, “At a very high level to approach unexpected infant death with an open mind, to be thorough and fact-facing, to document what you see and what you don’t see, and to make those materials available for review.”
Garcia also asked about the ophthalmology findings. Matshes testified there was no evidence of retinal hemorrhages, retinoschisis or macular folds, but cautioned that he does not regard either the presence or absence of those findings as determinative of abuse.
“I’ve written and taught heavily on this subject and consistently testify to my teachings, which is that I do not use the eye hemorrhages to diagnose abuse, nor do I use their absence to say abuse did not happen,” Matshes testified. “So from my school of thought, this is a meaningless finding.”
He also testified that the cervical spine examination showed no injuries.
“The examination that was performed on the cervical spine was thorough and complete by Dr. Snyder. It showed that the spine was not injured, which means that if one was looking for evidence of whiplash such as might occur with shaken or some forms of severe impact, the neck was not injured by such a mechanism,” Matshes testified.
When Garcia asked whether the pathology findings supported a diagnosis of abusive head trauma, Matshes said the neuropathology evidence alone was insufficient to answer that question.
“I don’t have enough information to make that conclusion because that’s well beyond the mandate I was given as a peer reviewer for the neuropathology specimens,” he testified. “We would make the conclusion of abusive head trauma or not abusive head trauma based on much more information.”
Matshes nevertheless emphasized the significance of the spinal findings, stating, “The spine in my school of thought, as I understand pediatric forensic pathology, the normalcy of that spine is of tremendous significance in my practice.”
He further testified that Elijah Clay’s brain pathology was unlike most cases he has encountered.
“And through our group, we see several hundred alleged abusive head trauma cases per year, sometimes 500 or 600 or more,” Matshes testified. “Elijah’s case stands out as an outlier in terms of the underlying complexity of his brain disease. This is a very complex neuropathology.”
Responding to questions from Judge Ellis, Matshes explained that the brain findings could have multiple explanations.
“There are features present that on one hand could be interpreted as physical injury and on the other may entirely be natural disease,” he testified. He added that “all of those possibilities remain on the table because they can’t be resolved by the brain exam.”
Matshes also cautioned against assuming bleeding necessarily indicates trauma.
“We are frequently lulled into a sense of complacency by the presence of blood around the brain because, as humans, we associate blood with trauma, but blood inside the head of a human is also the result sometimes of natural disease,” he testified. “Up to half of babies will be born with subdural hemorrhages just from the act of birth.”
Asked by Judge Ellis about alternative explanations for the pathology, Matshes testified that meningitis and bleeding disorders remained among the possibilities. He also noted that current practice would include genetic testing for bleeding disorders that may produce similar findings in infants.
Garcia asked whether the neuropathology report complicated a straightforward trauma conclusion. Although Matshes noted his group had not been asked to determine the cause of death, he testified, “I would suggest that if someone was thinking this was straightforward trauma, the neuropathology report does not confirm that.”
On cross-examination, Kuo asked Matshes whether he agreed that rapid acceleration and deceleration, commonly referred to as shaking, can cause abusive head trauma and death in infants.
“Agreed strongly,” Matshes testified.
He also reaffirmed that he had not been asked to determine the cause of death in Elijah Clay’s case and that additional information beyond the neuropathology findings would be necessary before offering an opinion on whether abusive head trauma occurred.
Friday’s testimony was notable because the defense called a physician who participated in the prosecution’s original neuropathology review rather than a retained defense expert.
The hearing follows the defense’s continuing effort to challenge the prosecution’s theory through medical evidence.