In this issue

Our take: the advance reaches toward the biological cause of a disorder that can interrupt work, relationships and ordinary independence.

Sleep research

Sleeping brains have a sense of timing

A sleeping brain can respond to sound without waking up. In a study of 14 healthy volunteers, researchers timed tiny bursts of pink noise to the brain’s slow waves. Those precisely placed sounds strengthened waves of the fluid that surrounds the brain.

The intriguing question is whether that could eventually make sleep more restorative. The study did not show better memory, Alzheimer’s prevention or less need for sleep. Timing was central: this is not evidence that leaving a noise playlist running will do the same thing.

Read the MIT report · Original study

Menstrual migraine

When migraine keeps a monthly appointment

For people whose migraines arrive around menstruation, predictability does not make the pain easier. A trial of atogepant suggests that targeting that window could help. AbbVie reported 0.8 fewer migraine days than placebo during the menstrual window, averaged across three cycles, in a study enrolling 468 women.

These September 10 results come from the manufacturer’s topline announcement; the full findings still need scrutiny. The useful signal is a treatment approach built around a particularly disruptive pattern of migraine.

Read the trial announcement

Genetic discovery

Nine billion DNA changes. A better place to start looking.

Reading DNA is one challenge. Working out which changes matter is another. Google DeepMind’s new AlphaGenome Atlas offers researchers predictions for nine billion possible single-letter changes in human DNA.

Think of it as a way to prioritize the experiments worth doing. It could help researchers investigate disease-linked variants, but its predictions are not a diagnosis or proof that a particular genetic change causes disease.

Explore the originating report

Autism research

Different autism-linked genes, shared biological paths

Hundreds of genes have been linked to autism. A new map asks where their effects meet. Researchers examined 100 autism risk genes and mapped more than 1,800 interactions among proteins, finding that different genetic changes can disrupt shared networks.

That may give researchers more focused places to investigate treatments, particularly for people with rare, high-impact mutations. The August 27 study is a research map, not a new treatment or an explanation of every autistic person’s experience.

Read the UCSF report

A longer life—for mice, so far

Semaglutide has another research question attached to it: ageing. In a study of older female mice, those treated with the drug had a median lifespan of 834 days, compared with 742 days in controls. That gives scientists a reason to investigate further. It does not tell us whether the drug extends human life.

Original study

Tiny antennas take on a tough brain cancer

Researchers used magnetic fields to activate microscopic devices against glioblastoma in lab and mouse experiments. Median survival increased by more than 50% in the mouse models. The possibility is a new physical way to attack treatment-resistant cancer cells. The distance to patient care remains substantial: these were preclinical experiments involving delivery into the brain, not a proven treatment or a simple arm injection.

Read the MIT report · Original study

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