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A team of researchers and drug companies have been sifting through a massive collection of genetic data from Iceland to find new drug targets that might lead to next-generation weight-loss or diabetes medicines like Ozempic. The news is about using patterns in real people’s DNA to spot rare changes that point to proteins or pathways drugs could safely mimic or block. That shortlist of targets could then guide startups and big pharma in making new peptide-based medicines. The main substance people are thinking about here is semaglutide, the active ingredient in Ozempic and Wegovy. Semaglutide is a man-made version of a hormone your gut makes after eating that talks to the brain to reduce appetite and slows how fast food leaves your stomach. Drugs like this are called receptor agonists — meaning they gently press the same “on” button the natural hormone uses — and many new weight-loss or diabetes drugs work the same way by copying or boosting normal biological signals. What the Icelandic work actually did was look for genetic variants — unusual DNA changes — that are linked to lower body weight, lower blood sugar, or longer lifespans. Iceland has unusually detailed population records and a lot of genomic data from many people, so researchers can spot rare variants more easily. When they find a variant that seems protective, they try to figure out which gene it affects and whether that gene makes a protein that a drug could target. This isn’t the same as testing a drug in people. It’s an early discovery step that suggests where to focus the expensive lab and clinical work next. Why this matters is practical: finding a human genetic “proof” that altering a particular protein helps with obesity or diabetes makes pharma more confident that a drug aimed at that protein will work and be safe. That can speed up development and reduce the number of dead ends. For patients and investors, that means we might see a pipeline of new therapies beyond current GLP-1 drugs (the class that includes semaglutide), potentially with different effects, fewer side effects, or lower cost. There are important caveats. Genetic links don’t guarantee a successful drug — they just point to promising directions. Many candidates that look good on paper fail in lab tests or human trials. Also, work based on Icelandic data may reflect that country’s specific population genetics and may not apply evenly across diverse groups. Any drug coming from these discoveries will still need years of testing for safety and effectiveness. Finally, manipulating appetite or metabolism can have side effects — nausea, gallbladder issues, mood changes, and unknown long-term risks — so caution is required. Bottom line: researchers are mining Iceland’s DNA records to find human-backed targets for the next wave of obesity and diabetes drugs, which is a smart early step but far from a ready-made cure.
Source: Bloomberg