Peptide News Digest

ADA 2026 Closes: Orforglipron ACHIEVE Beats Oral Semaglutide Head-to-Head, AstraZeneca Elecoglipron 10.5% Phase 2b + Lancet, Roche Enicepatide 22.5%, Boehringer Survodutide Fat-Loss Detail, Petrelintide Tolerability

ADA closes: orforglipron beats oral semaglutide head-to-head, elecoglipron 10.5%, Roche enicepatide 22.5%, survodutide fat-loss detail, plus new SoC.

10 stories · Covering clinical-trials, regulatory, industry

Editor's Note

Monday closed ADA 2026 with the meeting's densest set of obesity readouts. Lilly took its oral GLP-1 Foundayo to a Phase 3 win over oral semaglutide in ACHIEVE-3, with 37% of patients on the highest dose reaching an HbA1c below 5.7%, normal-range territory, against 12.5% on the comparator. AstraZeneca's elecoglipron joined the oral incretin field with 10.5% weight loss in VISTA, a Lancet publication, and a Phase 3 transition. Roche put hard numbers on the petrelintide and enicepatide combination strategy: 22.5% placebo-adjusted weight loss for enicepatide at 48 weeks and a tolerability case for the amylin analog petrelintide that targets the patients who quit GLP-1s for GI side effects. Boehringer added body-composition detail to survodutide's already-published topline (34% visceral and 63% liver fat reduction), and the ADA released revised Standards of Care that elevated cardiovascular and kidney risk to co-primary diabetes goals alongside HbA1c. The takeaway after four days: the oral, amylin, and combination threads now have real data behind them, and the field's center of gravity has moved beyond once-weekly injections of a single GLP-1.

Lilly Foundayo (Orforglipron) ACHIEVE Phase 3 Data at ADA: Head-to-Head Win Over Oral Semaglutide, FDA Filing in Q2

Lilly presented full Phase 3 data from the ACHIEVE program in type 2 diabetes at ADA 2026's Monday symposium. In the head-to-head ACHIEVE-3 trial, Foundayo (orforglipron) beat oral semaglutide across the primary and all key secondary endpoints, with 37.1% of patients on the highest Foundayo dose reaching HbA1c under 5.7% (normal range) versus 12.5% on the highest oral semaglutide dose tested. ACHIEVE-2 compared Foundayo to dapagliflozin; ACHIEVE-5 added it to insulin glargine. Lilly plans to submit Foundayo for FDA T2D approval by end of Q2 under the Commissioner's National Priority Voucher.

AstraZeneca Elecoglipron VISTA Phase 2b at ADA: 10.5% Weight Loss at 26 Weeks Versus 0.6% Placebo, Lancet Publication, Phase 3 Confirmed

AstraZeneca presented VISTA Phase 2b data at ADA 2026 with simultaneous Lancet publication. In adults with obesity or overweight plus comorbidity, oral elecoglipron 75 mg produced 10.5% mean weight loss at 26 weeks versus 0.6% on placebo, continuing to 11.8% by 36 weeks, alongside blood-pressure and inflammation reductions. The companion SOLSTICE T2D trial showed 1.9-point HbA1c reductions with 90% reaching HbA1c under 7% and 7.7% weight loss. AstraZeneca announced an extensive Phase 3 program covering obesity, T2D, and cardiovascular and kidney outcome trials.

Roche Enicepatide CT388-103 Phase 2 at ADA: 22.5% Placebo-Adjusted Weight Loss at 48 Weeks, 40% Reaching 25% Loss

Genentech presented Phase 2 CT388-103 data for enicepatide, the once-weekly GLP-1/GIP dual agonist, at the Roche investor event Monday June 8. The 48-week study produced 22.5% placebo-adjusted weight loss in adults with overweight or obesity, with 26% of participants losing more than 30% of body weight and almost 40% reaching at least 25%. Both enicepatide and petrelintide advance into Phase 3, and the planned Phase 2 multi-arm fixed-dose combination of the two starts mid-2026.

Roche Petrelintide ZUPREME-1 at ADA: Amylin Analog Targets the 30-40% of Patients Who Quit GLP-1s for GI Tolerability

Roche presented ZUPREME-1 Phase 2 data for petrelintide, the once-weekly long-acting amylin analog licensed from Zealand Pharma, at the Monday June 8 investor event. The pitch hinges on tolerability: published topline showed up to 10.7% weight loss at 42 weeks versus 1.7% placebo, with discontinuation 4.8% vs 4.9% placebo and no vomiting at the maximally effective dose. Medical Daily framed the readout as a non-incretin option for the estimated 30-40% of patients who quit GLP-1s for GI side effects. Petrelintide advances to Phase 3 alongside enicepatide.

Boehringer Survodutide SYNCHRONIZE-1 Pre-Specified Body Composition: 34% Visceral Fat and 63% Liver Fat Reduction, Lean Mass Preserved

Boehringer Ingelheim and Zealand Pharma presented a pre-specified body-composition analysis of SYNCHRONIZE-1 at ADA's Monday session: survodutide produced up to 34% relative reduction in visceral fat and 63.1% reduction in liver fat from baseline at 76 weeks, while limiting lean-mass loss. The company also disclosed SYNCHRONIZE-MASLD results: 6 of 10 patients with MASLD reached liver-fat normalization at 48 weeks. The body-composition story is Boehringer's response to a 16.6% headline weight number that analysts had called less competitive than Lilly's.

ADA Standards of Care in Diabetes 2026 Revised at Closing: Cardiovascular and Kidney Risk Reduction Elevated to Co-Primary Goal Alongside HbA1c

The ADA closed its 86th Scientific Sessions on June 8 with a formal revision to its Standards of Care that elevates cardiovascular and kidney risk reduction to a co-primary treatment goal alongside glycemic control, ending decades of practice in which HbA1c stood as the dominant benchmark. The shift formalizes a redefinition of diabetes care around the cardio-renal-metabolic axis that GLP-1, SGLT2, and finerenone evidence has driven, and pushes earlier GLP-1 and SGLT2 use from diabetes diagnosis.

ADA 2026 Oral GLP-1 Field Map After Monday: Foundayo, Aleniglipron, Elecoglipron, Ribupatide, HRS-7535

Monday's data sharpened the oral GLP-1 competitive map. Lilly's Foundayo (orforglipron) leads with a Phase 3 head-to-head win over oral semaglutide and a Q2 FDA filing pending. Structure's aleniglipron sits closest, with 16.3% Phase 2b weight loss and Nature Medicine publication on Friday. AstraZeneca's elecoglipron just cleared Phase 2b. Chinese entrants Hengrui-Kailera (ribupatide, HRS-7535) added Phase 2 and 3 readouts. Novo's Wegovy pill remains the only currently-approved oral, but the next-wave field is now broad and head-to-head data are arriving fast.

Roche Confirms Petrelintide-Enicepatide Phase 2 Combination Trial Starts Mid-2026

Genentech confirmed at its Monday investor event that the planned Phase 2 multi-arm fixed-dose combination of petrelintide (amylin analog) and enicepatide (GLP-1/GIP) starts mid-2026. The setup mirrors Novo's CagriSema and Lilly's Mounjaro-plus-amylin work, with Roche aiming for the same dual-mechanism economics that produced REIMAGINE 2's head-to-head win this week. Roche projected $9 billion in peak annual sales for the combined obesity pipeline at its Q1 print.

Medscape Frames the Beyond-GLP-1 Pipeline at ADA 2026: Amylin, Triagonist, Antibody-Peptide, and Preclinical Acceleration

A Medscape ADA wrap on June 8 framed the post-GLP-1 era taking shape across the meeting: amylin analogs (petrelintide, cagrilintide, eloralintide) targeting GI-intolerance, triagonists (retatrutide), antibody-peptide conjugates (Amgen's maridebart cafraglutide/MariTide), and preclinical acceleration through AI peptide-design platforms. Each angle aims at the population gap that current GLP-1 monotherapy leaves: the patients who quit for tolerability, the ones who plateau, and the ones who need additional metabolic effects beyond appetite.

ADA 2026 Closes in New Orleans After Four Days: Retatrutide, CagriSema, Foundayo, Survodutide, Petrelintide, Elecoglipron, Mazdutide, and the New Standards of Care

The 86th ADA Scientific Sessions wrapped Monday June 8 after presenting Phase 3 retatrutide TRIUMPH-1/TRANSCEND-T2D-1, CagriSema REIMAGINE 1/2/3, Foundayo ACHIEVE 1-5, survodutide SYNCHRONIZE-1, petrelintide ZUPREME-1, enicepatide CT388-103, elecoglipron VISTA/SOLSTICE, mazdutide GLORY-2/DREAMS-3, zenagamtide Phase 2, plus the inaugural ADA Standards of Care in Overweight and Obesity. The next inflection points: the July 23-24 PCAC peptide-compounding meeting, August 28 ITM-11 PDUFA in NETs, and the Foundayo T2D filing in Q2.