SYNTRA LABS

News · Research

The latest in peptide research

Newly published studies and clinical trials, explained plainly and linked to their source. Informing is part of the lab, too.

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Human study
Metabolic · 10 Feb 2021

Weekly semaglutide: 14.9% weight loss in the STEP 1 trial

In adults with overweight or obesity without diabetes, weight loss was sustained and clinically relevant versus placebo.

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Human study
Metabolic · 11 Nov 2023

SELECT: semaglutide reduced cardiovascular events in people without diabetes

17,604 participants with prior cardiovascular disease and overweight or obesity, followed for almost 40 months.

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Human study
Metabolic · 24 May 2024

FLOW: semaglutide protected the kidney in type 2 diabetes with kidney disease

The risk of the combined kidney and cardiovascular outcome was 24% lower than with placebo.

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Human study
Metabolic · 30 Apr 2025

ESSENCE: semaglutide improved liver histology in fatty liver with inflammation

Phase 3 in 1,197 people with metabolic steatohepatitis and moderate or advanced fibrosis confirmed by biopsy.

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Human study
Metabolic · 25 Aug 2023

Heart failure and obesity: semaglutide improved symptoms and physical capacity

In STEP-HFpEF, symptoms, physical limitation and walking distance improved versus placebo.

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Human study
Metabolic · 4 Jun 2022

SURMOUNT-1: tirzepatide achieved substantial, sustained weight reductions

A 72-week trial in people with obesity testing three weekly doses against placebo.

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Human study
Metabolic · 21 Jun 2024

Sleep apnoea: tirzepatide reduced night-time breathing pauses

Two phase 3 trials in adults with moderate-to-severe obstructive sleep apnoea and obesity.

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Human study
Metabolic · 16 Nov 2024

SUMMIT: tirzepatide lowered the risk of worsening heart failure

Fewer cardiovascular deaths or heart-failure worsening events than placebo, and better health status.

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Human study
Metabolic · 11 May 2025

Head to head: tirzepatide beat semaglutide on weight loss

SURMOUNT-5 compared both peptides directly in 751 adults with obesity without diabetes over 72 weeks.

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Human study
Metabolic · 26 Jun 2023

Retatrutide, the triple agonist, showed large weight loss in phase 2

It acts on GIP, GLP-1 and glucagon receptors at once; the effect was dose-dependent at 48 weeks.

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Human study
Metabolic · 26 Jun 2023

Type 2 diabetes: retatrutide cut HbA1c by up to 2.2 points in 36 weeks

In phase 2 it outperformed placebo and dulaglutide on glucose control, with weight loss of up to 16.9%.

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Human study
Metabolic · 13 Jun 2026

Retatrutide's first phase 3 trial: better glucose and up to 15.3% less weight

TRANSCEND-T2D-1, published in June 2026 in The Lancet, with 537 people with type 2 diabetes.

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Human study
Metabolic · 10 Jun 2024

Fatty liver: with retatrutide, 86% normalised their liver fat

Phase 2a substudy in Nature Medicine: liver fat fell by more than 80% at higher doses in 24 weeks.

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Human study
GH axis · 1 Dec 2019

Tesamorelin reduced liver fat and halted fibrosis in people with HIV

A 12-month randomised trial of the GHRH analogue in HIV-associated fatty liver.

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Human study
Sexual health · 1 Nov 2019

Bremelanotide improved sexual desire in two phase 3 trials

The RECONNECT studies evaluated this melanocortin agonist in premenopausal women with hypoactive sexual desire.

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Human study
Sexual health · 1 Aug 2014

Kisspeptin triggered egg maturation in in-vitro fertilisation

A pioneering study showed this natural peptide can replace the classic hormonal trigger in IVF.

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Publication
Longevity · 19 Sep 2025

FDA approved elamipretide (SS-31), the first treatment for Barth syndrome

Accelerated approval for a peptide that acts in the mitochondria, in a rare and serious disease.

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Animal study
Metabolic · 20 Jan 2021

MOTS-c, the peptide exercise produces, improved physical capacity in old mice

In Nature Communications: treatment started late in life increased physical capacity in old mice.

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Review
Longevity · 7 Jul 2018

GHK-Cu: the review that gathered its regenerative effects on skin

The copper tripeptide stimulates collagen, elastin and fibroblast function, according to the data reviewed.

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Human study
Recovery · 1 Oct 2013

ARA-290 (cibinetide) improved neuropathic pain and regrew nerve fibres

In people with sarcoidosis and small-fibre nerve damage, 28 days of treatment beat placebo.

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Human study
Immunity · 22 Jul 2023

LL-37 cream sped up healing of diabetic foot ulcers

A randomised, double-blind trial with the antimicrobial peptide the body makes itself.

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Human study
Recovery · 1 Mar 2025

Intravenous BPC-157 was well tolerated in a first pilot study

A very small pilot, in two healthy adults, found no adverse effects or changes in organ markers.

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Review
Immunity · 1 Feb 2024

Thymosin alpha-1: over 11,000 people in trials support its profile

A review of more than 30 clinical trials describes it as a well-tolerated immune modulator.

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