The First Cohort homepage, organized by story type: a lead investigation, a flagship We Checked fact-check band, a New Findings pane, an Investigations pane, and one small bounded recency line at the bottom

The First Cohort

Medical research, with the receipts

Investigation

A Gene-Editing Trial Killed a 6-Year-Old. Nature Published the Science and Left Her Out of the Record.

Her parents paid $860,000 to base-edit their daughter's brain. She died of an immune reaction within a week, and the published paper never says so.

Mira Petrov · 8 min read

A Gene-Editing Trial Killed a 6-Year-Old. Nature Published the Science and Left Her Out of the Record.

The published record of a base-editing trial that ended in a child's death.

We Checked

Claims doing the rounds, tested against the evidence.

The Nose-Spray TB Vaccine in Your Feed This Week Has Only Ever Worked in Mice
Infectious Disease

The Nose-Spray TB Vaccine in Your Feed This Week Has Only Ever Worked in Mice

Lena Marshall · 6 min

The claim

Johns Hopkins fused two genes into a nasal spray and cleared tuberculosis faster in mice.

What the evidence shows

DNA vaccines have dazzled mice for thirty years.

A Petri Dish of Angry Immune Cells, a Little Ultrasound, and a Very Big Headline
Autoimmune & Inflammation

A Petri Dish of Angry Immune Cells, a Little Ultrasound, and a Very Big Headline

Sarah Okonkwo · 4 min

The claim

UAH researchers used sound waves to shift immune cells from attack mode toward repair. The press release said "stop arthritis before it starts."

What the evidence shows

The experiment never left the dish.

Brain & Aging

Anti-Tau Alzheimer's Drugs Keep Hitting Their Target and Missing the Disease

Tau is the new headliner at the Alzheimer's conference, but the anti-tau antibodies keep proving they bind the protein while doing nothing for patients.

Sarah Okonkwo · 6 min

Metabolic & Weight

The GLP-1s That Barely Move the Scale Don't Cause Hair Loss, and That's the Clue Everyone Missed

Women on semaglutide shed hair at about twice the rate of men, and the weakest GLP-1s show almost no signal.

Sarah Okonkwo · 5 min

Nutrition & Food

In the Lab, Coffee Flipped an Anti-Aging Switch. The Caffeine Barely Did.

Stephen Safe's lab reported that coffee's polyphenols, more than its caffeine, switch on a cellular stress-defense receptor. Every experiment ran in a dish.

Lena Marshall · 6 min

New Findings

Research that landed this week, and what it actually shows.

Orforglipron Reaches Deep Into the Brain's Reward Circuit and Turns the Dopamine Down
Metabolic & Weight

Orforglipron Reaches Deep Into the Brain's Reward Circuit and Turns the Dopamine Down

Sarah Okonkwo · 5 min

David Ho's Lab Built an Antibody to Neutralize Nearly Every Strain of HIV
Infectious Disease

David Ho's Lab Built an Antibody to Neutralize Nearly Every Strain of HIV. Its First Test in People Held for Two Weeks.

Lena Marshall · 7 min

Pregnancy Stations Killer T Cells in the Milk Ducts, and a Decade Later They Haven't Left
Cancer

Pregnancy Stations Killer T Cells in the Milk Ducts, and a Decade Later They Haven't Left

Sarah Okonkwo · 9 min

The Blue Light Over Your Fish Tank Is Now Building Drug Molecules
Drugs & FDA

The Blue Light Over Your Fish Tank Is Now Building Drug Molecules

Sarah Okonkwo · 4 min

The Sweeteners Sold to Diabetics as the Safe Swap Tracked With Faster Brain Aging
Brain & Aging

The Sweeteners Sold to Diabetics as the Safe Swap Tracked With Faster Brain Aging

Infectious Disease

Five Years After COVID, Japan Is Still Dying at Pandemic Rates, and Confirmed COVID Explains Only a Tenth

Metabolic & Weight

The Mice Ate More and Got Leaner. The Switch Was One Amino Acid, Turned Down.

Autoimmune & Inflammation

A Chinese Bark Compound Reached the Black-Box Arthritis Drugs' Pathway From Upstream, in Rats

Investigations

Primary documents, named names, and what the record shows.

NEJM Retracted the Study That Approved Amgen's Vasculitis Drug
Investigations

NEJM Retracted the Study That Approved Amgen's Vasculitis Drug. It Had Never Done That in 200 Years.

The FDA says the drug's superiority result came from re-scoring nine patients after the trial was unblinded. It is still on U.S. shelves.

Mira Petrov · 6 min

A Pharma-Funded Nonprofit Is Lobbying the FDA to Kill Seven Peptides It Can't Sell You
Investigations

A Pharma-Funded Nonprofit Is Lobbying the FDA to Kill Seven Peptides It Can't Sell You

The Partnership for Safe Medicines has deep ties to the drug lobby. Now it is urging the FDA to permanently block BPC-157, MOTS-c and five other off-patent peptides.

Sarah Okonkwo · 7 min

Drugs & FDA

For Years, a Foreign Factory Could Put the Active Ingredient in Your Medicine and Never Tell the FDA

Lena Marshall · 8 min

35 investigations →

Also published today

Everything else from 26 July.

Nutrition & Food

Pepsi Paid $1.95 Billion for Poppi, in a Category That Averages as Much Sugar as Fiber

Cancer

The Evolutionary Fix for Drug Resistance Works Best on a Tumor Too Small to Find

Nutrition & Food

The FDA Revoked Two Petroleum Dyes That Industry Abandoned Before Most Americans Were Born

Newsletter

The Sunday Cohort

One weekly dispatch. The stories that held up.