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Ischemic StrokePhase 3NCT07241897

DPP4 Inhibitor Intervention on Post-stroke Cognitive Impairment in Ischemic Stroke Patients With Type 2 Diabetes

A Phase 3 study testing Sentagliptin Phosphate - single dose in people with Ischemic Stroke and Diabete Mellitus, run by Second Affiliated Hospital of Soochow University at 1 site in China.

Not yet recruiting

Opening soon. The study is approved but enrolment has not started yet. Sites may already take enquiries.

Sites and contacts
Official record
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Trial summary

Post-stroke cognitive impairment (PSCI) increases the risk of disability and mortality in stroke patients, thereby exacerbating the disease burden of stroke. Type 2 diabetes is a major risk factor for PSCI, and stroke patients with type 2 diabetes have a higher risk of developing PSCI. Read more about this study

Who is it for?
Ages 40 to 75 years
Conditions the study is for
Ischemic Stroke, Diabete Mellitus
What is being tested?
Sentagliptin Phosphate - single dose
Type of treatment
Pill or oral medicine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
312 participants
Where
1 siteChina
Study dates
15 Dec 2025to 30 Apr 2028
Phase
Phase 3
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 40 to 75 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Mild ischemic stroke, defined as a National Institutes of Health Stroke Scale (NIHSS) score ≤ 5.
  • Coexisting type 2 diabetes with a disease duration of less than 5 years.
  • Ability to complete the MoCA, MMSE, and the NINDS-CSN-recommended 1-hour standardized neuropsychological test for VCI.
  • Age between 40 and 75 years.
  • Onset of stroke within the last 2 weeks.
  • Glycated hemoglobin (HbA1c) between 6.5% and 8.5%.
  • More than 9 years of education.
  • Informed consent signed by the patient or their family.

Who cannot join

  • Coexisting dementia or severe cognitive impairment (MoCA < 17).
  • Coexisting severe depression, defined as a Hamilton Depression Rating Scale (HAMD) score ≥ 20.
  • Prior use of cognitive-enhancing drugs, such as donepezil or memantine.
  • Allergy to DPP4 inhibitors.
  • Past or current use of DPP4 inhibitors.
  • Past or current use of GLP-1 agonists.
Show all 13Show fewer
  • Type 1 diabetes, latent autoimmune diabetes in adults, secondary diabetes, malignant tumors, autoimmune diseases, or other endocrine-related diseases.
  • Moderate or severe liver or kidney dysfunction.
  • Chronic or acute pancreatitis.
  • Pregnancy or lactation.
  • Severe infection or severely impaired immune response.
  • Participation in other clinical trials.
  • Past or current use of insulin therapy.

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

Shoujiang You, MD, PhD contact

+8615995738506

0319503013@163.com

WenYan Hua, MD contact

0512-67783682

sdfeyec@163.com

China1 site
  • Department of Neurology, Second Affiliated Hospital of Soochow University

    Suzhou, Jiangsu, 215004

    Shoujiang You, MD, PhD, 00 86 512 67783662, 0319503013@163.com

    Yongjun Cao, MD, PhD, 00 86 512 67784789, yongjuncao@126.com

Other trials in China

About this study

Official title: DPP4 Inhibitor on Post-stroke Cognitive Impairment in Ischemic Stroke Patients With Type 2 Diabetes Mellitus (DISC-DM): Multicentre, Double Blind, Randomised, Placebo Controlled Trial

Post-stroke cognitive impairment (PSCI) increases the risk of disability and mortality in stroke patients, thereby exacerbating the disease burden of stroke. Type 2 diabetes is a major risk factor for PSCI, and stroke patients with type 2 diabetes have a higher risk of developing PSCI. Despite the high incidence and severe impact of PSCI, effective intervention methods are still lacking. Identifying safe and effective drugs to improve cognitive function in stroke patients and reduce the risk of PSCI, especially for those with type 2 diabetes, is of significant importance and could help reduce the burden of stroke.

Dipeptidyl peptidase-4 (DPP4) inhibitors are first-line antidiabetic drugs, and several studies have shown that DPP4 inhibitors provide benefits beyond glucose control, including significantly improving cognitive function in patients with type 2 diabetes or slowing the progression of cognitive impairment. Our previous research found a significant negative correlation between baseline plasma soluble DPP4 (sDPP4) levels and the 90-day PSCI risk in ischemic stroke patients. Moreover, some studies indicate that DPP4 inhibitors can increase plasma sDPP4 levels. Based on this, we hypothesize that DPP4 inhibitors could be effective for PSCI intervention and may improve cognitive function post-stroke.

This project aims to conduct a multicenter, randomized, double-blind, placebo-controlled study. We will include patients with mild ischemic stroke combined with type 2 diabetes and provide continuous intervention with DPP4 inhibitors or a placebo for 180 days. Cognitive function in both groups will be assessed before and after intervention to determine if DPP4 inhibitors can improve cognitive function and reduce the risk of PSCI in ischemic stroke patients with type 2 diabetes. Clinical blood samples and imaging data will also be used to preliminarily explore potential mechanisms.

Being tested
Sentagliptin Phosphate - single dose, Placebo
Keywords
DPP4 inhibitors, Ischemic Stroke, PSCI, Diabetes Mellitus, RCT
Medical subject headings
Ischemic Stroke, Diabetes Mellitus

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Sentagliptin Phosphate - single doseDrug

    Sentagliptin Phosphate 50 mg, once daily, plus metformin hydrochloride extended-release tablets (50 mg, two or three times daily). If blood glucose is still not well-controlled, sulfonylurea drugs may be added as needed.

  • PlaceboDrug

    Placebo (identical in size, shape, color, appearance, and odor to Sentagliptin Phosphate, 50 mg, once daily) plus metformin hydrochloride extended-release tablets (50 mg, two or three times daily). If blood glucose is still not well-controlled, sulfonylurea drugs may be added as needed.

Study groups in NCT07241897
Study groupRoleWhat they receive
Intervention GroupExperimentalSentagliptin Phosphate 50 mg, once daily, plus metformin hydrochloride extended-release tablets (50 mg, two or three times daily). If blood glucose is still not well-controlled, sulfonylurea drugs may be added as needed.
Receives: Drug: Sentagliptin Phosphate - single dose
Control GroupPlacebo comparatorPlacebo (identical in size, shape, color, appearance, and odor to Sentagliptin Phosphate, 50 mg, once daily) plus metformin hydrochloride extended-release tablets (50 mg, two or three times daily). If blood glucose is still not well-controlled, sulfonylurea drugs may be added as needed
Receives: Drug: Placebo

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Change in MoCA score before and after the 180-day intervention

    Change in MoCA score before and after the 180-day intervention

    Measured: 180 days

Secondary outcomes (4)
  1. PSCI incidence at 180 days

    MoCA score < 25

    Measured: 180 days

  2. Changes in MMSE score and scores in various cognitive domains before and after the 180-day intervention

    Changes in MMSE score and scores in various cognitive domains before and after the 180-day intervention

    Measured: 180 days

  3. Changes in MoCA and MMSE scores before and after the 90-day intervention

    Changes in MoCA and MMSE scores before and after the 90-day intervention

    Measured: 90 days

  4. Modified Rankin Scale (mRS) score and cardiovascular and cerebrovascular events at 90 and 180 days

    Modified Rankin Scale (mRS) score and cardiovascular and cerebrovascular events at 90 and 180 days

    Measured: 90 days and 180 days

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted21 Nov 2025
  2. Study start15 Dec 2025 (estimated)
  3. Primary completion31 Dec 2027 (estimated)
  4. Study completion30 Apr 2028 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Model description
Intervention Group: Sentagliptin Phosphate 50 mg, once daily, plus metformin hydrochloride extended-release tablets (50 mg, two or three times daily). If blood glucose is still not well-controlled, sulfonylurea drugs may be added as needed.
Masking
Triple blind
Who is masked
Participant, Investigator, Outcomes assessor
Enrolment
312 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07241897
Sponsor's protocol ID
LC2024019
Other IDs
82471226
Status last verified
Apr 2025
First submitted
20 Sep 2025
Last updated
21 Nov 2025
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • You S, Bi Y, Miao M, Bao A, Du J, Xu T, Liu CF, Zhang Y, He J, Cao Y, Zhong C. Plasma sDPP4 (Soluble Dipeptidyl Peptidase-4) and Cognitive Impairment After Noncardioembolic Acute Ischemic Stroke. Stroke. 2023 Jan;54(1):113-121. doi: 10.1161/STROKEAHA.122.040798. Epub 2022 Dec 7.

    PubMed 36475470
  • You S, Miao M, Lu Z, Bao A, Du J, Che B, Xu T, Zhong C, Cao Y, Liu CF, Zhang Y, He J. Plasma Soluble Dipeptidyl Peptidase-4 and Risk of Major Cardiovascular Events After Ischemic Stroke: Secondary Analysis of China Antihypertensive Trial in Acute Ischemic Stroke (CATIS). Neurology. 2022 Aug 30;99(9):e925-e934. doi: 10.1212/WNL.0000000000200784. Epub 2022 Jun 2.

    PubMed 35654589
  • Baggio LL, Varin EM, Koehler JA, Cao X, Lokhnygina Y, Stevens SR, Holman RR, Drucker DJ. Plasma levels of DPP4 activity and sDPP4 are dissociated from inflammation in mice and humans. Nat Commun. 2020 Jul 28;11(1):3766. doi: 10.1038/s41467-020-17556-z.

    PubMed 32724076
  • Ma M, Hasegawa Y, Koibuchi N, Toyama K, Uekawa K, Nakagawa T, Lin B, Kim-Mitsuyama S. DPP-4 inhibition with linagliptin ameliorates cognitive impairment and brain atrophy induced by transient cerebral ischemia in type 2 diabetic mice. Cardiovasc Diabetol. 2015 May 20;14:54. doi: 10.1186/s12933-015-0218-z.

    PubMed 25986579
  • Chiazza F, Tammen H, Pintana H, Lietzau G, Collino M, Nystrom T, Klein T, Darsalia V, Patrone C. The effect of DPP-4 inhibition to improve functional outcome after stroke is mediated by the SDF-1alpha/CXCR4 pathway. Cardiovasc Diabetol. 2018 May 19;17(1):60. doi: 10.1186/s12933-018-0702-3.

    PubMed 29776406
  • Borzi AM, Condorelli G, Biondi A, Basile F, Vicari ESD, Buscemi C, Luca S, Vacante M. Effects of vildagliptin, a DPP-4 inhibitor, in elderly diabetic patients with mild cognitive impairment. Arch Gerontol Geriatr. 2019 Sep-Oct;84:103896. doi: 10.1016/j.archger.2019.06.001. Epub 2019 Jun 3.

    PubMed 31204117
  • Jeong SH, Kim HR, Kim J, Kim H, Hong N, Jung JH, Baik K, Cho H, Lyoo CH, Ye BS, Sohn YH, Seong JK, Lee PH. Association of Dipeptidyl Peptidase-4 Inhibitor Use and Amyloid Burden in Patients With Diabetes and AD-Related Cognitive Impairment. Neurology. 2021 Sep 14;97(11):e1110-e1122. doi: 10.1212/WNL.0000000000012534. Epub 2021 Aug 11.

    PubMed 34380754
  • Sun C, Xiao Y, Li J, Ge B, Chen X, Liu H, Zheng T. Nonenzymatic function of DPP4 in diabetes-associated mitochondrial dysfunction and cognitive impairment. Alzheimers Dement. 2022 May;18(5):966-987. doi: 10.1002/alz.12437. Epub 2021 Aug 10.

    PubMed 34374497
  • Zhong J, Maiseyeu A, Davis SN, Rajagopalan S. DPP4 in cardiometabolic disease: recent insights from the laboratory and clinical trials of DPP4 inhibition. Circ Res. 2015 Apr 10;116(8):1491-504. doi: 10.1161/CIRCRESAHA.116.305665.

    PubMed 25858071
  • Mulvihill EE, Drucker DJ. Pharmacology, physiology, and mechanisms of action of dipeptidyl peptidase-4 inhibitors. Endocr Rev. 2014 Dec;35(6):992-1019. doi: 10.1210/er.2014-1035. Epub 2014 Sep 12.

    PubMed 25216328
  • Levine DA, Wadley VG, Langa KM, Unverzagt FW, Kabeto MU, Giordani B, Howard G, Howard VJ, Cushman M, Judd SE, Galecki AT. Risk Factors for Poststroke Cognitive Decline: The REGARDS Study (Reasons for Geographic and Racial Differences in Stroke). Stroke. 2018 Apr;49(4):987-994. doi: 10.1161/STROKEAHA.117.018529. Epub 2018 Mar 16.

    PubMed 29581343
  • Rost NS, Brodtmann A, Pase MP, van Veluw SJ, Biffi A, Duering M, Hinman JD, Dichgans M. Post-Stroke Cognitive Impairment and Dementia. Circ Res. 2022 Apr 15;130(8):1252-1271. doi: 10.1161/CIRCRESAHA.122.319951. Epub 2022 Apr 14.

    PubMed 35420911

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing Sentagliptin Phosphate - single dose in people with Ischemic Stroke and Diabete Mellitus, run by Second Affiliated Hospital of Soochow University at 1 site in China.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 8 inclusion and 13 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: opening soon, as of the sponsor's last update on 21 Nov 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in China. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Shoujiang You, MD, PhD (+8615995738506, 0319503013@163.com), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Change in MoCA score before and after the 180-day intervention (time frame: 180 days). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT07241897, which also lists 12 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 21 Nov 2025.

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