Roundup trial: Monsanto lawyer, expert witness spar over glyphosate-cancer link

Glyphosate x

On the fourth day of a jury trial over whether Monsanto’s Roundup weed killer caused a Bay Area man’s deadly lymphoma, a cancer-risk expert and a lawyer for the agrichemical company sparred over the evaluation of scientific research on the herbicide’s potential carcinogenicity, with neither side emerging a clear winner.

The expert, Christopher Portier, testified for more than five hours in San Francisco County Superior Court about the ways he believed the research should have been evaluated by U.S. and European regulators to make conclusions about glyphosate’s carcinogenicity, and slammed them over their methods of analysis.

On [July 12], Portier testified that the European Food Safety Authority (EFSA) missed 15 tumors in a group of rodent studies done on glyphosate because it used the wrong method of analysis.

Related article:  Monsanto, expert witness spar over validity of IARC's glyphosate-cancer finding

The agency called the tumors irrelevant and declined to change its finding of non-carcinogenicity for glyphosate.

Monsanto lawyer Kirby Griffis challenged Portier’s…assessment on cross-examination.

“It’s almost certain that the number of mouse and rat tumors you told the jury about are false-positives,” he said, referring to the 15 additional tumors.

Griffis, who is with Hollingsworth LLP, explained that animal carcinogenicity studies involve dosing large numbers of animals. The large number of resulting tests creates a number of false-positives by chance alone, he said.

Read full, original article: Monsanto Lawyer Clashes With Cancer Expert in Roundup Trial

Outbreak
Outbreak Daily Digest
Biotech Facts & Fallacies
Talking Biotech
Genetics Unzipped
Video: Test everyone – Slovakia goes its own way to control COVID

Video: Test everyone – Slovakia goes its own way to control COVID

As Europe sees record coronavirus cases and deaths, Slovakia is testing its entire adult population. WSJ's Drew Hinshaw explains how ...
mag insects image superjumbo v

Disaster interrupted: Which farming system better preserves insect populations: Organic or conventional?

A three-year run of fragmentary Armageddon-like studies had primed the journalism pumps and settled the media framing about the future ...
dead bee desolate city

Are we facing an ‘Insect Apocalypse’ caused by ‘intensive, industrial’ farming and agricultural chemicals? The media say yes; Science says ‘no’

The media call it the “Insect Apocalypse”. In the past three years, the phrase has become an accepted truth of ...
globalmethanebudget globalcarbonproject cropped x

Infographic: Cows cause climate change? Agriculture scientist says ‘belching bovines’ get too much blame

A recent interview by Caroline Stocks, a UK journalist who writes about food, agriculture and the environment, of air quality ...
organic hillside sweet corn x

Organic v conventional using GMOs: Which is the more sustainable farming?

Many consumers spend more for organic food to avoid genetically modified products in part because they believe that “industrial agriculture” ...
benjamin franklin x

Are most GMO safety studies funded by industry?

The assertion that biotech companies do the research and the government just signs off on it is false ...
favicon

Environmental Working Group: EWG challenges safety of GMOs, food pesticide residues

Known by some as the "Environmental Worrying Group," EWG lobbies for tighter GMO legislation and famously puts out annual "dirty dozen" list of fruits and ...
m hansen

Michael Hansen: Architect of Consumers Union ongoing anti-GMO campaign

Michael K. Hansen (born 1956) is thought by critics to be the prime mover behind the ongoing campaign against agricultural biotechnology at Consumer Reports. He is an ...
News on human & agricultural genetics and biotechnology delivered to your inbox.
Optional. Mail on special occasions.
Send this to a friend