Breaking AI & Tech News Analyzed

Retatrutide Delivers Up to 28% Body‑Weight Reduction in Phase 3 StudyA new weight‑loss drug has helped participants in a sizable trial lose much more weight than other obesity drugs already on the market – up to an average of 28% of their body weight, Eli Lilly announced on Thursday. Phase 3 Trial Design and Dosing RegimenThe Indiana‑based company randomized 2,339 adults with obesity or overweight and at least one weight‑related comorbidity (no diabetes) to receive Retatrutide at 4 mg, 9 mg, 12 mg, or placebo for 80 weeks. The drug is a once‑weekly triple hormone receptor agonist targeting GLP‑1, GIP, and glucagon. Quantitative Outcomes and Safety ProfileAverage weight loss: 70.3 lb (28.3%) at the 12 mg dose.Average loss at 9 mg: 64.4 lb (25.9%).Average loss at 4 mg: 47.2 lb (19.0%).45.3% of 12 mg participants lost ≥30% of body weight.65.3% reduced BMI below 30; 37.5% of those starting with BMI ≥ 40 achieved this.Side‑effects increased with dose: nausea (28.6%‑42.4%), diarrhea (25.2%‑34.1%), vomiting (up to 25%).For comparison, Zepbound yields 15‑20% loss over 72 weeks and Wegovy 14‑19% over 64‑72 weeks. Implications for the Obesity‑Drug LandscapeThe magnitude of loss positions Retatrutide as the most effective pharmacologic option to date, potentially shifting prescriber preference away from existing GLP‑1 monotherapies. Its triple‑agonist mechanism adds glucagon, a hormone absent from current products, which may enhance metabolic control and appetite suppression. Future Outlook: Approval Path and Market PotentialAnalysts expect regulatory submissions within the next year, with a likely U.S. FDA review in 2027. If approved, Retatrutide could capture a sizable share of the rapidly expanding obesity‑treatment market, prompting competitors to explore multi‑agonist formulations.

A new large‑scale randomized trial presented at the European Congress on Obesity in Istanbul indicates that the oral GLP‑1 antagonist orforglipron can help patients retain the majority of weight lost with injectable therapies such as tirzepatide (Mounjaro) and semaglutide (Wegovy).Trial Shows Oral Orforglipron Preserves Most Weight After Switching from InjectablesThe study, funded by Eli Lilly, followed 376 US patients who had been on tirzepatide or semaglutide injections for 72 weeks and then randomized them to a daily orforglipron tablet or placebo for an additional year.Participants were previously on weekly GLP‑1 jabs that typically produce 15‑20% body‑weight loss.After the injection phase, subjects were switched to oral therapy or placebo for 12 months.Primary endpoint: proportion of weight loss retained at 12 months.Quantitative Outcomes: 75% vs 49% Retention for Tirzepatide Users, 80% vs 38% for Semaglutide UsersWeight‑loss maintenance differed markedly between the pill and placebo groups:Tirzepatide cohort: 75% of lost weight retained with orforglipron vs 49% with placebo.Semaglutide cohort: 80% retained with the pill vs 38% with placebo.Secondary benefits—blood pressure, cholesterol, and glycaemic control—were also sustained in the pill arm.Implications for Obesity Management and Healthcare CostsExperts highlighted the broader significance:Dr Louis Aronne (Weill Cornell Medicine) emphasized that treating obesity directly can simultaneously improve glucose, lipid, and blood‑pressure metrics.Dr Marie Spreckley (University of Cambridge) noted patient preference for oral therapy due to convenience, storage, and lower cost.Dr Simon Cork (Anglia Ruskin University) warned that injectable GLP‑1 drugs, while highly effective, are expensive and limit long‑term accessibility for both private payers and the NHS.The findings suggest a potential shift toward oral agents that maintain efficacy while reducing financial and logistical burdens.Future Outlook: Oral GLP‑1 Therapies Could Redefine Chronic Obesity CareIf further trials confirm these results, orforglipron could become a cornerstone of chronic obesity management, enabling earlier intervention (BMI 25‑27) and possibly preventing progression to severe obesity.Regulators and payers will likely scrutinize cost‑effectiveness models, but the prospect of a cheap, daily tablet that sustains weight loss may reshape treatment algorithms worldwide.

Eli Lilly, the US pharmaceutical group behind the Mounjaro weight-loss drug, is seeking to resume its investments in the UK after pausing them last year. The company is in talks with UK ministers to regularly increase NHS drug prices and end a rebate scheme. Patrik Jonsson, president of Eli Lilly's international business, expressed optimism about reaching an agreement this summer.The talks will also explore 'innovative' pricing plans, such as linking payments for anti-obesity drugs to whether the treatment helps patients return to work. This comes as the US pharmaceutical industry increases pressure on the UK, with Keir Starmer agreeing to the first increase in NHS cost-effectiveness thresholds in 27 years. The threshold was raised from £20,000 to £30,000 a year for every year of life gained to £25,000 to £35,000.Eli Lilly was one of several pharmaceutical companies that ditched or paused almost £25bn in planned investments in the UK last year. The company paused its plans to invest in a laboratory site in central London. Jonsson stated that the resumption of Eli Lilly's investment would depend on the outcome of its talks with the government.He emphasized that prices for medicines in the UK had been 'far too low for far too long' and that the threshold couldn't remain static for another three decades. The UK agreed to pay 25% more for new medicines by 2035 as part of a US-UK drug pricing deal, which could eventually reach £9bn a year.Large pharmaceutical companies have protested about a 'rebate' scheme, under which they are required to pay back a chunk of revenue from sales of branded medicines. This scheme is expected to fall in 2026, although Jonsson believes payments 'should actually get down to zero' over time.