Amycretin, assigned the international nonproprietary name zenagamtide in 2026, is Novo Nordisk's dual glucagon-like peptide-1 (GLP-1) and amylin receptor agonist in late-stage development for obesity and weight maintenance. Phase 1 results published in The Lancet earlier in 2026 showed 22% weight reduction at 36 weeks on once-weekly subcutaneous dosing and 13.1% weight loss at 12 weeks on the oral formulation — efficacy that places amycretin within range of tirzepatide and second-generation injectable agents in early data.
Novo Nordisk began recruiting AMAZE-12, the Phase 3 weight-maintenance trial of amycretin, on May 18, 2026. The trial evaluates amycretin specifically for sustained weight maintenance after initial weight loss, distinguishing it from AMAZE-1 (84-week weight-change endpoint). The broader AMAZE Phase 3 program tests both subcutaneous and oral formulations. Amycretin sits within Novo's two-track amylin strategy alongside CagriSema (cagrilintide + semaglutide fixed-dose combination, FDA filing under review with decision expected late 2026). Combined, the amylin axis is Novo's most direct strategic response to Eli Lilly's retatrutide TRIUMPH-1 readout (28.3% mean weight loss at 12 mg, released May 21, 2026). Novo featured new mid-stage zenagamtide data among its 40 abstracts at ADA 2026 (June 5-8, New Orleans).
Stories here cover AMAZE Phase 3 readouts, mechanism studies, the broader Novo Nordisk amylin pipeline (cagrilintide monotherapy and combination), and the competitive landscape against Lilly's incretin combinations. See #novo-nordisk, #cagrisema, and #amylin for adjacent threads.
An updated systematic review by Areesha Moiz, Mark Eisenberg, and colleagues, published online September 1, 2026 in the Annals of Internal Medicine, covered 38 randomized trials in 25,816 adults with overweight or obesity and without diabetes, adding 14 trials to the authors' earlier review. Among marketed drugs, the highest placebo-subtracted weight loss reported was 5.8% for liraglutide, 14.8% for subcutaneous semaglutide, 14.3% for oral semaglutide, 12.4% for orforglipron, and 19.0% for tirzepatide; emerging agents reached 23.9% with amycretin and 22.1% with retatrutide. Gastrointestinal adverse events occurred in 76.0% of patients on GLP-1 drugs versus 40.1% on placebo, and discontinuation for adverse events was 10.7% versus 3.4%. The authors said heterogeneity prevented a pooled quantitative analysis, so these figures are the highest values from individual trials rather than combined estimates.
The European Association for the Study of Diabetes (EASD) 62nd Annual Meeting in Milan September 28 through October 2, 2026 sets up the September obesity-peptide catalyst calendar and is anchored on the amylin agonist class. AstraZeneca will present Phase 2 APRICUS data (AZD6234 amylin analog monotherapy in obesity) plus the Phase 2b ASCEND readout (AZD6234 plus AZD9550 GLP-1/glucagon dual agonist combination against placebo over 36 weeks, 377 patients). Zealand Pharma and Roche will present petrelintide ZUPREME-2 data (obesity plus type 2 diabetes) with Phase 3 monotherapy initiation planned late 2026. Novo Nordisk will present amycretin (long-acting GLP-1/amylin dual agonist) plus CagriSema follow-through data. The EASD readout window coincides with Roche's Pharma Day September 28 (updates on petrelintide, enicepatide, HM17321). Ascendis Pharma may also provide TransCon CNP achondroplasia updates. The clustered amylin data will position the class for late-2026 and 2027 regulatory and Phase 3 initiation decisions.
The European Association for the Study of Diabetes (EASD) 62nd Annual Meeting takes place in Milan September 28 through October 2, 2026, and sets up the largest single September catalyst window for obesity-peptide investor and clinical interest. AstraZeneca will present Phase 2 data on AZD6234 (selective amylin receptor peptide agonist) monotherapy from APRICUS plus the ASCEND Phase 2b combination with AZD9550 GLP-1/glucagon dual agonist. Zealand Pharma and Roche will present petrelintide (amylin analog) data from ZUPREME-2 (obesity plus type 2 diabetes) with the Phase 3 monotherapy program preparing to initiate late 2026. Novo Nordisk will present amycretin (long-acting GLP-1/amylin dual agonist) plus CagriSema follow-through data. The EASD calendar coincides with the Roche Pharma Day investor event on Monday September 28, 2026 that will update on the top-three-obesity-portfolio (petrelintide, enicepatide, HM17321). Ascendis Pharma is also expected to provide TransCon CNP achondroplasia updates.
Roche (SIX: ROG) is scheduled to hold its investor Pharma Day Monday September 28, 2026, providing updates across the R&D portfolio including three obesity assets that collectively position the company as the credible third-place global obesity competitor behind Eli Lilly and Novo Nordisk. Petrelintide (amylin analog, partnered with Zealand Pharma under the March 2025 up-to-$5.3 billion collaboration, Phase 3 monotherapy initiation planned late 2026 following ZUPREME-1's 10.7% weight loss at 42 weeks). Enicepatide (CT-388, dual GLP-1/GIP receptor agonist acquired from Carmot Therapeutics in 2023, 54% obesity resolution at 24 mg in Phase 2). HM17321 (urocortin-2 / CRFR2 receptor agonist peptide licensed from Hanmi Pharm on August 24, 2026 with $190 million upfront plus up to $2.3 billion in milestones plus tiered royalties). The Roche Pharma Day coincides with the EASD 2026 Annual Meeting Milan September 28 through October 2, where AstraZeneca will present AZD6234 Phase 2 data, Zealand Pharma will present petrelintide data, and Novo Nordisk will present amycretin and CagriSema updates.
Novo Nordisk (NYSE: NVO) shares fell approximately 6% Thursday August 13, 2026 on broker downgrade citing continued franchise-gap pressure from Eli Lilly's tirzepatide franchise (Mounjaro + Zepbound) and the CagriSema head-to-head miss against tirzepatide. Specifics: CagriSema (cagrilintide 2.4 mg plus semaglutide 2.4 mg fixed-dose combination) reached 23.0% weight loss at 84 weeks versus tirzepatide 15 mg's 25.5% in the REDEFINE 4 head-to-head Phase 3 trial published in early August 2026. The August 4 H1 2026 earnings release raised full-year 2026 sales guidance to down 3% from a prior down 8% midpoint at constant exchange rates. The broader investor narrative continues to focus on Novo's ability to defend GLP-1 franchise economics against Eli Lilly's Q2 2026 $23 billion revenue blowout (+48% year-over-year), Foundayo (orforglipron) $98 million first commercial quarter, and retatrutide's 28.7% Phase 3 TRIUMPH-4 weight loss result at 68 weeks. Analyst attention now shifts to Novo's Wegovy 7.2 mg higher-dose FDA review, the amycretin oral amylin monotherapy Phase 1b program (roughly 22% weight loss at Week 36), and next-generation candidates in Novo's pipeline. Investors are also watching the CagriSema FDA decision expected late 2026 and whether the label expansion strategy can offset the competitive pressure.
Viking Therapeutics (NASDAQ: VKTX) disclosed on the July 29, 2026 Q2 2026 earnings call that VK3019, a novel dual amylin and calcitonin receptor agonist peptide for obesity, has entered Phase 1 clinical development. The candidate extends the company's obesity pipeline beyond the flagship VK2735 (dual GLP-1/GIP agonist). VK2735 status: Phase 3 VANQUISH program in obesity and obesity/type 2 diabetes is fully enrolled and advancing on track; oral VK2735 Phase 3 trials are slated to initiate in Q4 2026, positioning Viking as a potential first-to-market oral dual GLP-1/GIP agonist. A novel maintenance dosing study for VK2735 is nearing completion, with results expected later in Q3 2026 exploring less frequent dosing regimens. Q2 2026 financials: net loss widened to $128.1 million from $65.6 million in Q2 2025 on increased R&D spending, with $502 million in cash and short-term investments down from $706 million at year-end 2025. VK3019 is mechanistically distinct from VK2735: amylin signaling adds brainstem-mediated satiety (via the calcitonin receptor complex with RAMPs) on top of a calcitonin receptor agonism that has a longer development history in postmenopausal osteoporosis (Miacalcin) and Paget's disease. The amylin plus calcitonin combination extends the amylin-analog obesity category anchored by Novo Nordisk's cagrilintide (a component of CagriSema) and the Novo amycretin oral amylin monotherapy program.
Lexaria Bioscience (NASDAQ: LEXX) announced June 9, 2026 that dosing has been completed in Animal Study #2 (GLP-1-A26-2) evaluating its DehydraTECH oral peptide delivery platform with two next-generation GLP-1 drugs: Eli Lilly's retatrutide (triple GIP/GLP-1/glucagon agonist) and Novo Nordisk's amycretin (unimolecular GLP-1/amylin agonist). The study tested formulation enhancements designed to improve DehydraTECH performance and stake intellectual property claims on next-generation oral GLP-1 delivery. The data follows Lexaria's April 23 study launch and feeds the broader oral GLP-1 platform competition with Novo Nordisk's Wegovy pill (3M US prescriptions in 5 months) and Lilly's orforglipron (Foundayo, approved April 2026). Lexaria's industry update June 17 framed the oral GLP-1 pill segment as 'billions in new industry sales' potential.
Novo Nordisk presented Phase 2 data for zenagamtide (formerly amycretin), its unimolecular GLP-1 and amylin receptor agonist, at ADA 2026 in 262 adults with type 2 diabetes randomized across six subcutaneous doses (0.4 to 40 mg) versus placebo. The 40 mg arm cut HbA1c by 1.71 percentage points and reduced body weight by 14.6% at 36 weeks, with nearly 89% of patients reaching HbA1c below 7%. The study met its primary HbA1c endpoint across all doses; Novo plans Phase 3 in H2 2026 and hosted a same-day R&D investor event.
Ahead of the ADA Scientific Sessions (June 5-8, New Orleans), Novo Nordisk previewed 40 abstracts spanning pivotal Phase 3 CagriSema in the REIMAGINE type 2 diabetes program, new mid-stage data for the amylin/GLP-1 agonist zenagamtide (the molecule previously called amycretin), and IcoSema and semaglutide analyses. Novo said its obesity and diabetes products reached 45.3 million patients by March 2026, with obesity up 58% year over year, and will host an R&D investor event June 7.
Industry commentary May 22 framed Novo Nordisk's strategic response to retatrutide's TRIUMPH-1 readout as a two-track amylin strategy. CagriSema (cagrilintide 2.4 mg + semaglutide 2.4 mg) is the near-term play — Phase 3 REDEFINE-1 and REDEFINE-2 complete, FDA filing under review with decision expected late 2026, and Novo positioning the safety profile as the competitive edge after REDEFINE-4 missed non-inferiority versus tirzepatide 15 mg in February 2026. Amycretin (dual GLP-1/amylin agonist) is the long-term bet — AMAZE-12 Phase 3 began recruiting May 18 testing the dual agonist for weight maintenance, with Phase 1 results showing 22% weight loss at 36 weeks weekly subcutaneous and 13.1% at 12 weeks oral. The CagriSema higher-dose Phase 3 starts H2 2026; REDEFINE-11 reads out H1 2027. Combined, the amylin axis is structurally Novo's most direct response to Lilly's triple-agonist mechanism — adding amylin tone (slower gastric emptying, satiety persistence, weight-maintenance) rather than competing on glucagon-driven energy expenditure.
Novo Nordisk's AMAZE-12 Phase 3 trial of amycretin — a dual GLP-1 and amylin receptor agonist — began recruiting on May 18, 2026. The trial evaluates amycretin specifically for weight maintenance after initial weight loss, distinguishing it from AMAZE-1 (which measures body weight change over 84 weeks). The amycretin clinical rationale rests on Phase 1 weekly subcutaneous dosing producing 22% weight reduction at 36 weeks and oral formulation producing 13.1% at 12 weeks — both reported in the Lancet earlier in 2026. Amycretin sits within Novo's next-generation pipeline alongside CagriSema (cagrilintide + semaglutide, FDA filing under review with decision expected late 2026) and the orexin-related pipeline acquired via Centessa. The amycretin program is structurally Novo's most direct response to Lilly's retatrutide.
MBX Biosciences (Nasdaq: MBX) released a May 11 obesity portfolio update covering three programs. MBX 4291, a GLP-1/GIP co-agonist prodrug, posted preliminary blinded Phase 1 MAD Part B data showing a T1/2Cmax1 of ~26 days, consistent with true once-monthly dosing; 12-week MAD Part C data expected Q4 2026. MBX 5765, a new amycretin prodrug combining GLP-1, GIP, glucagon, and DACRA (dual amylin and calcitonin receptor agonist) activity in a single construct, is in IND-enabling studies starting Q2 2026. Once-weekly imapextide hit proof of concept in the Phase 2a STEADI trial in post-bariatric hypoglycemia, with glucose nadir increased 17-34% across doses and insulin peak decreased 11-45% — directly competing with Amylyx's avexitide (Phase 3 LUCIDITY topline Q3 2026) for the same indication.