AnAIanalysis of people on sertraline found that the popular antidepressant would only work on one-third of patients.
To forecast the responses, the researchers studied brain scans and clinical data from 229 patients with major depression.
The data had been collected before and after treatment with sertraline or a placebo.

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This is important news for patients, Reneman said.
Normally, it takes six to eight weeks before it is known whether an antidepressant will work.
The study also highlighted a biological determinant of sertraline efficacy.
These findings could lead to better treatment of depression.
At present, patients often take sertraline for up to six months before determining whether it works.
If it doesnt, they may go through the same process again with other antidepressants.
The new method could provide a faster route to the right medication.
One of the themes of this years TNW Conference is Ren-AI-ssance: The AI-Powered Rebirth.
Story byThomas Macaulay
Thomas is the managing editor of TNW.
He leads our coverage of European tech and oversees our talented team of writers.
Away from work, he e(show all)Thomas is the managing editor of TNW.
He leads our coverage of European tech and oversees our talented team of writers.
Away from work, he enjoys playing chess (badly) and the guitar (even worse).