A Suffolk County jury in Boston has awarded $6 million in damages, plus interest, to David Sabatini, the ousted star molecular biologist and former MIT professor whose career collapsed after a much younger colleague accused him of inappropriate sexual conduct in his Cambridge research lab. The verdict, delivered on Friday after a bruising three-week civil trial, was a stark rejection of a high-profile #MeToo claim — and it has instantly become the most consequential legal moment in science’s long, uneven reckoning with power, sex and workplace boundaries.
The verdict: $6 million for Sabatini
The jury of seven women and six men directed Kristin Knouse, a fellow scientist who had brought her own suit against Sabatini, to pay the $6 million award, plus interest. The jurors found that Knouse had defamed Sabatini and interfered with his ability to make a living — a civil finding that her statements about him were false and that they materially destroyed his livelihood.
The case has been one of the most closely watched courtroom dramas in American science in recent years, not least because it pitted two competing narratives of the #MeToo era against each other: a claim of coercion and a hostile workplace versus a claim of false accusation and reputational ruin. On the questions put to it, the jury chose decisively.
Who David Sabatini was — and what he lost
Before his downfall, Sabatini was among the most decorated biomedical scientists of his generation. A tenured professor at MIT and the head of his own laboratory at the world-renowned Whitehead Institute in Cambridge, Massachusetts, he was best known for foundational work on the mTOR pathway — the cellular circuitry that regulates growth and metabolism and is implicated in diseases from cancer to diabetes. Virtually all modern work on mTOR builds on research from his laboratory.
He was also an investigator with the Howard Hughes Medical Institute, a status that carried with it millions of dollars in grant funding. All of it unravelled in 2021. Following an internal investigation, Whitehead ended his appointment; he subsequently left MIT and lost his HHMI support. His lawsuit later described devastating personal and professional consequences, including millions in lost funding, a destroyed reputation and severe damage to his mental health.
A relationship that became an institutional crisis
At the centre of the case was Sabatini’s relationship with Kristin Knouse, a fellow Whitehead scientist who ran her own laboratory at the institute. According to Sabatini’s account, the two had a consensual sexual relationship beginning in April 2018 that had effectively ended by July 2019 — and after he made clear he did not want a long-term relationship, she continued to pursue him, he said, despite his repeated requests that she stop.
Knouse’s account was starkly different. She said Sabatini had subjected her to a coercive relationship and fostered a hostile and sexualised workplace environment in his lab, where she alleged he wielded the outsized authority of a star laboratory director. These duelling accounts — consent and pursuit on one side, coercion and abuse of power on the other — were the core of what the jury had to weigh.
The Whitehead investigation and the ouster
The institution’s own inquiry added a third dimension. Whitehead’s investigation produced a 248-page report that, according to public summaries, found Sabatini had chiefly failed to disclose his relationship with Knouse — a violation of the institute’s policies — and that his day-to-day administration of the lab had violated its anti-harassment policy, creating what the report called a “sexualised undercurrent” in the laboratory. The report also found that his “indirect influence” over Knouse ran afoul of the rules governing relationships between senior scientists and colleagues over whom they exercise authority.
The policy landscape is important context. MIT’s rules, strengthened in January 2018, strictly prohibit even consensual relationships between faculty or principal investigators and anyone over whom they hold direct or indirect authority, and require the senior party in any such relationship to recuse themselves from supervisory or evaluative functions and to notify their supervisor. Sabatini’s critics argued his conduct breached both the letter and the spirit of these rules; his supporters argued the punishment — professional annihilation — bore no proportion to the findings.
The lawsuit, the countersuit, and the trial
Sabatini sued Knouse in the Massachusetts Superior Court for Middlesex County, alleging libel, tortious interference with economic relationships, and intentional and negligent infliction of emotional distress. His complaint framed the case as the manipulation of laws and policies “designed to ensure workplace equality” to instead punish an ex-lover — and as an attempt to silence a complainant and warn off others who might come forward, in the institute’s characterisation.
Knouse countersued, pressing her claim that the relationship was coercive and the workplace hostile. The resulting three-week trial, which concluded this week, was a war of attrition: scores of hours of conflicting testimony, bitter recriminations, and a vast trove of unfiltered text messages exchanged by the two scientists, combed for evidence of consent, coercion, pursuit and regret. The trial also pulled back the curtain on the permissive sexual norms of an elite institute, where laboratory directors wield extraordinary authority over the careers of the young scientists in their orbit.
