A fresh 5-way agonist emerges

lessthanhalf

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A study that came out in Nature yesterday: https://www.nature.com/articles/s41586-026-10427-5

What they did was take lanifibranor, a small molecule PPARα/γ/δ agonist currently in phase 3 trials for metabolic dysfunction-associated steatohepatitis, and attach it to a GLP-1 - GIP agonist peptide. The result was substantially greater weight loss than with the GLP-1 - GIP peptide by itself. Since the lanifibranor is tethered to the peptide, cells carrying GLP-1 receptors take it up preferentially, which means it can act at doses 1/6000th of those used in the phase 3 trials of the drug on its own. That matters because the molecule alone comes with side effects. It also permits precise targeting of the molecule to cells expressing GLP-1 or GIP.

In mice, weight loss came close to twice what something similar to tirzepatide produces, or nearly 40%. The fact that lanifibranor is already in phase 3 could move things along somewhat. Human trials are not quite on the horizon, since they are not fully confident they understand all the effects of PPARα/γ/δ agonism, even though the drug is in phase 3 trials?

Given where the research stands, this will not happen for a good while yet, but I would not be surprised if the same basic idea gets tried again with different small molecules linked to glp-1 peptides down the line.
 
Wowzers. My own take is that speeding up weight loss isn't what's needed — quick shedding of pounds brings along an entirely separate set of issues to handle. What matters is shedding the correct weight. Going after the 'bad' fats and the neural signaling tied to them, such as food noise.
 
If a treatment can push maximum weight loss higher, that could matter, since many people live with severe obesity and even reta falls short when your BMI is 50. That said, this is at least 5 years off assuming it survives development, and most candidates do not. Its impact on blood sugar does look quite striking, though—it really flattens the response.
 
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