Meddyginiaeth
Tirzepatide: canlyniadau'r treialon
Cafodd tirzepatide y colledion pwysau cyfartalog mwyaf erioed a gofrestrwyd ar gyfer meddyginiaeth mewn treial o'r gordewdra wedi'i ddosbarthu'n ar hap. Mae hefyd yn y treial gyda'r canlyniadau nad ydynt yn ymwneud â phwysau mwyaf diddorol.
SURMOUNT-1: y maint effaith mwyaf yn y maes
Rhoes SURMOUNT-1 oedolion â gordewdra ac heb ddiabetes ar tirzepatide 5, 10 neu 15 mg bob wythnos, neu placebo, am 72 wythnos [8]. Roedd y newid pwysau cyfartalog ar y dos uchaf tua −20.9%, gyda'r dos 5 mg eisoes yn oddeutu −15% — sy'n golygu bod y dos tirzepatide isaf yn cyfateb yn fras i'r canlyniad gorau semaglutide. Roedd mwy na hanner y cyfranogwyr ar y dosau uwch wedi colli o leiaf 20% o bwysau'r corff.
Mae parhad y rhaglen hon wedi ymestyn dilyniant a chofnodwyd ar atal diabetes ynghyd â lleihau pwysau parhaus [5], sy'n bwysig oherwydd ei fod yn symud y pwynt terfyn o rif ar raddfa i ddigwyddiad clinigol.
Effeithiolrwydd colled pwysau
Mae'r cosb diabetes yn berthnasol yma hefyd
Rhedodd SURMOUNT-2 yr un protocol mewn oedolion â gordewdra a diabetes math 2 a darganfyddodd oddeutu 14.7% colled pwysau cyfartalog ar y dos uchaf [7]. Unwaith eto: effaith fawr, ac unwaith eto'n sylweddol llai na'r boblogaeth heb ddiabetes. Mae meta-analys sy'n cymharu'r ddau feddyginiaeth mewn diabetes math 2 yn rhoi'r drefn gymharol ar dir mwy cadarn [1][3].
| Treial | Poblogaeth | Dos | Hyd | Newid pwysau cyfartalog |
|---|---|---|---|---|
| SURMOUNT-1 [8] | Gordewdra, heb ddiabetes | 15 mg | 72 wythnos | ≈ −20.9% |
| SURMOUNT-1 [8] | Gordewdra, heb ddiabetes | 5 mg | 72 wythnos | ≈ −15% |
| SURMOUNT-2 [7] | Gordewdra + diabetes math 2 | 15 mg | 72 wythnos | ≈ −14.7% |
| SURMOUNT-5 [10] | Gordewdra, yn erbyn semaglutide | ≤15 mg | 72 wythnos | Gwell na semaglutide |
Trechu semaglutide yn uniongyrchol
Roedd cymariaethau anuniongyrchol a chohortau byd go iawn wedi cyfeirio yma am gyfnod [12], ond y treial a sefydlodd hyn oedd y gymhariaeth benben rhwng y ddau feddyginiaeth ar ddosau gordewdra yn yr un poblogaeth, a chafodd tirzepatide ei fuddugoliaeth ar newid pwysau cyfartalog gyda chymharol fawr [10]. Mewn diabetes math 2, roedd SURPASS-2 eisoes wedi dangos gwelliant dros semaglutide 1 mg ar y ddau bwynt terfyn glycaemig a phwysau [9].
Y canlyniadau nad ydynt yn ymwneud â phwysau
Symudodd dau dreial neilltuol tirzepatide y tu hwnt i gordewdra fel categori.
- Apnoea cwsg obstructive. Mewn oedolion â OSA cymedrol i ddifrifol a gordewdra, lleihawyd yr index apnoea-hypopnoea yn sylweddol yn erbyn placebo [6]. Dyma'r driniaeth feddygol gyntaf gyda thystiolaeth wedi'i neilltuo mewn cyflwr a reolwyd bron yn gyfan gwbl gyda CPAP.
- Clefyd y galon gyda ffrithiant eithafol cadwraeth. Mewn HFpEF gyda gordewdra — phenoteip gyda phrofiadau effeithiol ychydig iawn — gwellaodd tirzepatide ganlyniadau yn erbyn placebo [4].
- Digwyddiadau cardiofasgwlaidd. Cafodd cymhariaeth neilltuol yn erbyn dulaglutide ei chofnodi ar ganlyniadau cardiofasgwlaidd mewn diabetes math 2 [11], gan ychwanegu at y meta-analys cyn-gynhelir a ddarganfyddodd nad oedd unrhyw signal o niwed cardiofasgwlaidd.
Mae hefyd yn ymddangos yn y cyfarwyddyd Ewropeaidd ar glefyd yr afu steatotig ynghyd â semaglutide [2].
Cwestiynau cyffredin
Ai'r un peth yw Mounjaro â Zepbound?
Ydy tirzepatide yn syml yn well na semaglutide?
Ydy'r elfen GIP yn achosi'r colli pwysau ychwanegol?
Oes rhaid imi gyrraedd 15 mg?
Darllen cysylltiedig
Cyfeiriadau
Mae pob dyfyniad isod yn cysylltu â'r cofrestr adolygedig cyfoes gwreiddiol ar PubMed neu trwy DOI. Nid yw dim yma yn gymhwysedd ar gyfer cyngor meddygol.
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Efficacy and Safety of Glucagon-Like Peptide-1 Receptor Agonists for Weight Loss Among Adults Without Diabetes : A Systematic Review of Randomized Controlled Trials Moiz A, Filion KB, Toutounchi H, et al. · Annals of internal medicine · 2025 · Systematic review DOIPubMed 39761578
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Subcutaneously administered tirzepatide vs semaglutide for adults with type 2 diabetes: a systematic review and network meta-analysis of randomised controlled trials Karagiannis T, Malandris K, Avgerinos I, et al. · Diabetologia · 2024 · Meta-analysis DOIPubMed 38613667Full text
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EASL-EASD-EASO Clinical Practice Guidelines on the management of metabolic dysfunction-associated steatotic liver disease (MASLD): Executive Summary Diabetologia · 2024 · Clinical guideline DOIPubMed 38869512Full text
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EASL-EASD-EASO Clinical Practice Guidelines on the management of metabolic dysfunction-associated steatotic liver disease (MASLD) Journal of hepatology · 2024 · Clinical guideline DOIPubMed 38851997
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Comparative effectiveness of GLP-1 receptor agonists on glycaemic control, body weight, and lipid profile for type 2 diabetes: systematic review and network meta-analysis Yao H, Zhang A, Li D, et al. · BMJ (Clinical research ed.) · 2024 · Meta-analysis DOIPubMed 38286487Full text
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Risk of major adverse cardiovascular events and stroke associated with treatment with GLP-1 or the dual GIP/GLP-1 receptor agonist tirzepatide for type 2 diabetes: A systematic review and meta-analysis Stefanou MI, Theodorou A, Malhotra K, et al. · European stroke journal · 2024 · Meta-analysis DOIPubMed 38400569Full text
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Tirzepatide did not impact metabolic adaptation in people with obesity, but increased fat oxidation Ravussin E, Sanchez-Delgado G, Martin CK, et al. · Cell metabolism · 2025 · Randomised controlled trial DOIPubMed 40203836
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Efficacy and safety of tirzepatide in children and adolescents with type 2 diabetes (SURPASS-PEDS): a randomised, double-blind, placebo-controlled, phase 3 trial Hannon TS, Chao LC, Barrientos-Pérez M, et al. · Lancet (London, England) · 2025 · Randomised controlled trial DOIPubMed 40975112
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Efficacy and safety of once-weekly tirzepatide in Japanese patients with obesity disease (SURMOUNT-J): a multicentre, randomised, double-blind, placebo-controlled phase 3 trial Kadowaki T, Kiyosue A, Shingaki T, et al. · The lancet. Diabetes & endocrinology · 2025 · Randomised controlled trial DOIPubMed 40031941
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Tirzepatide and muscle composition changes in people with type 2 diabetes (SURPASS-3 MRI): a post-hoc analysis of a randomised, open-label, parallel-group, phase 3 trial Sattar N, Neeland IJ, Dahlqvist Leinhard O, et al. · The lancet. Diabetes & endocrinology · 2025 · Randomised controlled trial DOIPubMed 40318682
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Tirzepatide for Heart Failure with Preserved Ejection Fraction and Obesity Packer M, Zile MR, Kramer CM, et al. · The New England journal of medicine · 2025 · Randomised controlled trial DOIPubMed 39555826
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Tirzepatide for Obesity Treatment and Diabetes Prevention Jastreboff AM, le Roux CW, Stefanski A, et al. · The New England journal of medicine · 2025 · Randomised controlled trial DOIPubMed 39536238
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Body composition changes during weight reduction with tirzepatide in the SURMOUNT-1 study of adults with obesity or overweight Look M, Dunn JP, Kushner RF, et al. · Diabetes, obesity & metabolism · 2025 · Randomised controlled trial DOIPubMed 39996356Full text
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Continued Treatment With Tirzepatide for Maintenance of Weight Reduction in Adults With Obesity: The SURMOUNT-4 Randomized Clinical Trial Aronne LJ, Sattar N, Horn DB, et al. · JAMA · 2024 · Randomised controlled trial DOIPubMed 38078870Full text
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Tirzepatide for Weight Reduction in Chinese Adults With Obesity: The SURMOUNT-CN Randomized Clinical Trial Zhao L, Cheng Z, Lu Y, et al. · JAMA · 2024 · Randomised controlled trial DOIPubMed 38819983Full text
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Tirzepatide for the Treatment of Obstructive Sleep Apnea and Obesity Malhotra A, Grunstein RR, Fietze I, et al. · The New England journal of medicine · 2024 · Randomised controlled trial DOIPubMed 38912654Full text
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Tirzepatide vs Insulin Lispro Added to Basal Insulin in Type 2 Diabetes: The SURPASS-6 Randomized Clinical Trial Rosenstock J, Frías JP, Rodbard HW, et al. · JAMA · 2023 · Randomised controlled trial DOIPubMed 37786396Full text
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Tirzepatide once weekly for the treatment of obesity in people with type 2 diabetes (SURMOUNT-2): a double-blind, randomised, multicentre, placebo-controlled, phase 3 trial Garvey WT, Frias JP, Jastreboff AM, et al. · Lancet (London, England) · 2023 · Randomised controlled trial DOIPubMed 37385275
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Tirzepatide Reduces Appetite, Energy Intake, and Fat Mass in People With Type 2 Diabetes Heise T, DeVries JH, Urva S, et al. · Diabetes care · 2023 · Randomised controlled trial DOIPubMed 36857477Full text
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Effect of Subcutaneous Tirzepatide vs Placebo Added to Titrated Insulin Glargine on Glycemic Control in Patients With Type 2 Diabetes: The SURPASS-5 Randomized Clinical Trial Dahl D, Onishi Y, Norwood P, et al. · JAMA · 2022 · Randomised controlled trial DOIPubMed 35133415Full text
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Tirzepatide Once Weekly for the Treatment of Obesity Jastreboff AM, Aronne LJ, Ahmad NN, et al. · The New England journal of medicine · 2022 · Randomised controlled trial DOIPubMed 35658024
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Efficacy and safety of a novel dual GIP and GLP-1 receptor agonist tirzepatide in patients with type 2 diabetes (SURPASS-1): a double-blind, randomised, phase 3 trial Rosenstock J, Wysham C, Frías JP, et al. · Lancet (London, England) · 2021 · Randomised controlled trial DOIPubMed 34186022
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Tirzepatide versus Semaglutide Once Weekly in Patients with Type 2 Diabetes Frías JP, Davies MJ, Rosenstock J, et al. · The New England journal of medicine · 2021 · Randomised controlled trial DOIPubMed 34170647
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LY3298176, a novel dual GIP and GLP-1 receptor agonist for the treatment of type 2 diabetes mellitus: From discovery to clinical proof of concept Coskun T, Sloop KW, Loghin C, et al. · Molecular metabolism · 2018 · Randomised controlled trial DOIPubMed 30473097Full text
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Tirzepatide as Compared with Semaglutide for the Treatment of Obesity Aronne LJ, Horn DB, le Roux CW, et al. · The New England journal of medicine · 2025 · Clinical trial DOIPubMed 40353578
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Cardiovascular Outcomes with Tirzepatide versus Dulaglutide in Type 2 Diabetes Nicholls SJ, Pavo I, Bhatt DL, et al. · The New England journal of medicine · 2025 · Clinical trial DOIPubMed 41406444
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Tirzepatide, a dual GIP/GLP-1 receptor co-agonist for the treatment of type 2 diabetes with unmatched effectiveness regrading glycaemic control and body weight reduction Nauck MA, D'Alessio DA · Cardiovascular diabetology · 2022 · Review DOIPubMed 36050763Full text
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Semaglutide and Tirzepatide in Patients With Heart Failure With Preserved Ejection Fraction Krüger N, Schneeweiss S, Fuse K, et al. · JAMA · 2025 · Journal article DOIPubMed 40886075Full text
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Semaglutide vs Tirzepatide for Weight Loss in Adults With Overweight or Obesity Rodriguez PJ, Goodwin Cartwright BM, Gratzl S, et al. · JAMA internal medicine · 2024 · Journal article DOIPubMed 38976257Full text
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New Drug: Tirzepatide (Mounjaro(™)) Gettman L · The Senior care pharmacist · 2023 · Journal article DOIPubMed 36751934