StrokePROMISE-BD-100NCT06121336
PRecisiOn Medicine In StrokE: Evolution of Plasma Brain-Derived Tau in Acute Stroke
An observational study of Stroke and Stroke, Acute, run by Ludwig-Maximilians - University of Munich at 1 site in Germany.
Trial summary
The investigators recently identified Brain-derived tau (BD-tau) as a sensitive blood-based biomarker for brain injury in acute ischemic stroke: in patients with acute ischemic stroke, plasma BD-tau was associated with imaging-based metrics of brain injury upon admission, increased within the first 24 hours in… Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Stroke, Stroke, Acute, Stroke, Ischemic
- What is being tested?
- Plasma levels of BD-tau
- How many people
- 100 participants
- Where
- 1 siteGermany
- Study dates
- 1 Mar 2023to 31 Mar 2027
- Phase
- Observational
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 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: Patients will be recruited upon admission to a tertiary care hospital.
Who may be able to join
- clinical diagnosis of acute ischemic stroke
- presentation within 9 hours of symptom onset
- large- or medium-vessel occlusion (i.e. an occlusion of the ICA, MCA [segments M1-M4], ACA [segments A1-A3], basilar artery, or PCA [segments P1 to P3]) confirmed by CT or MRI angiography
- at least 18 years of age
- written informed consent
Who cannot join
- CT or MRI showing intracranial hemorrhage upon admission
- A history of ischemic stroke, subarachnoid hemorrhage, intracerebral hemorrhage, subdural hematoma, epidural hematoma, CNS tumor, meningitis, or encephalitis within the last three months
- dementia
- pre-stroke disability defined as a premorbid modified Rankin Scale score > 2
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
Germany1 site, 1 recruiting
- Recruiting
LMU University hospital, LMU Munich
Munich, Bavaria, 81377
Steffen Tiedt, MD PhD, +49440046171, steffen.tiedt@med.uni-muenchen.de
About this study
Official title: PRecisiOn Medicine In StrokE Study on the Evolution of Plasma Brain-Derived Tau in 100 Patients With Acute Ischemic Stroke
The investigators recently identified Brain-derived tau (BD-tau) as a sensitive blood-based biomarker for brain injury in acute ischemic stroke: in patients with acute ischemic stroke, plasma BD-tau was associated with imaging-based metrics of brain injury upon admission, increased within the first 24 hours in correlation with infarct progression, and at 24 hours was superior to final infarct volume in predicting 90-day functional outcome. While informing on the relation of BD-tau with imaging-based metrics of brain injury, this cross-sectional study was restricted to BD-tau assessments upon admission and at day 2 and could not inform on key characteristics of the evolution of plasma BD-tau, including when exactly it starts to rise, how long it continues to rise, and how it is determined by infarct characteristics as well as comorbidities. Here, the investigators aim to assess plasma BD-tau every hour from admission to 48 hours after onset to evaluate the hypothesis that BD-tau rises immediately after onset and plateaus between three and 48 hours after onset.
Read the detailed description
Ischemic stroke remains a leading cause of death and long-term disability worldwide,1 despite major advancements in reperfusion therapies.2,3 While neuroimaging modalities have expanded patient eligibility for reperfusion therapies by estimating ischemic core and salvageable tissue,4-7 their assessments are mostly single-timed. Currently available clinical algorithms lack the capacity to continuously track the dynamic evolution of how the primary core progresses to a final infarct, which, however, is a major determinant of functional outcome.8-10 Monitoring infarct trajectories could support therapeutic decision-making in patients with large-vessel occlusion stroke and unveil determinants of stroke progression, aiding in patient selection for trials evaluating cytoprotection11 and targeting clinically ineffective reperfusion.12 Previously studied blood-based biomarkers such as Neurofilament Light Chain (NfL),13 neuron-specific enolase (NSE),14 glial fibrillary acidic protein (GFAP),15,16 and S 100 calcium-binding protein B (S100B)17 either failed to capture the extent of brain injury within the acute phase of stroke or lack specificity. Plasma levels of brain-derived tau (BD-tau) were recently found to show high value for monitoring brain injury in patients with acute ischemic stroke: In 502 patients with acute IS, plasma BD-tau was associated with imaging-based metrics of brain injury upon admission, increased within the first 24 hours in correlation with infarct progression, and at 24 hours was superior to final infarct volume in predicting 90-day functional outcome.18 While informing on the relation of BD-tau with imaging-based metrics of brain injury, this large cross-sectional study was restricted to BD-tau assessments upon admission (median time from onset: 4.4 hours) and at day 2 (median time from onset: 22.7 hours) and could not inform on key characteristics of the evolution of plasma BD-tau, including when exactly it starts to rise, how long it continues to rise, and how it is determined by infarct characteristics as well as comorbidities. That knowledge would be of great value to determine the responsiveness of plasma BD-tau to brain injury after onset and to evaluate whether BD-tau plateaus at different time points after onset indicating no further infarct progression. Here, the investigators hypothesize that BD-tau rises immediately after onset and plateaus between three and 48 hours after onset. PROMISE-BD-100 will thus assess BD-tau levels every hour from admission to 48 hours from stroke onset in patients that present with the clinical diagnosis of an acute ischemic stroke due to a large- or medium-vessel occlusion within 9 hours from symptom onset.
- Conditions
- Stroke, Stroke, Acute, Stroke, Ischemic, Cerebrovascular Disorders, Brain Diseases, Central Nervous System Diseases
- Being tested
- Plasma levels of BD-tau
- Keywords
- Stroke, Brain injury, Biomarker, Pathophysiology
- Medical subject headings
- Stroke, Ischemic Stroke, Cerebrovascular Disorders, Brain Diseases, Central Nervous System Diseases, Brain Ischemia, Nervous System Diseases, Brain Injuries
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Plasma levels of BD-tauDiagnostic test
Plasma levels of BD-tau will be assessed using a single-molecule array assay.
| Study group | Role | What they receive |
|---|---|---|
| Ischemic Stroke | 100 patients admitted to a specialized stroke service because of an acute ischemic stroke due to large- or medium-vessel occlusion within 9 hours of stroke onset. BD-tau levels and other suggested markers of brain injury (e.g.. NfL) will be assessed every hour from admission to 48 hours after onset. Routinely collected clinical data including from neuroimaging will be collected throughout hospitalization. Clinical follow-up will be performed at 3 months. Receives: Diagnostic Test: Plasma levels of BD-tau |
What is being measured
The primary outcome is the main question the study is designed to answer.
The primary outcome are plasma BD-tau levels in acute ischemic stroke.
The evolution of BD-tau levels will be characterized by:
- the time point when plasma BD-tau levels start to rise after onset (defined as the earliest time point [in relation to onset] that showed higher BD-tau levels compared with the previous assessment and lower levels compared with the next assessment),
- the type of rise (e.g. linear, exponential, or logarithmic), and
- until when plasma BD-tau levels continue to rise (defined as the time point [in relation to onset] compared to which BD-tau levels do not increase by ≥ 5 % compared to 1h, 2h, and 3h afterwards). 5 % were chosen without prior knowledge and in an attempt to account for assay-dependent variations of BD-tau quantifications (coefficient of variation 8-9 %)18 while keeping a biologically and clinically plausible value (rather than e.g. 10 %).
Measured: Every hour from admission to 48 hours after onset.
Secondary outcomes (10)
ASPECTS on non-contrast CT
Measured: Upon admission
Ischemic core volume on CT perfusion
Measured: Upon admission
Regional leptomeningeal collateral score on CT angiography
Measured: Upon admission
Final infarct volume
Final infarct volume will be assessed on delayed neuroimaging (CT or MRI), at least 48 after symptom onset.
Measured: Between 48 hours after symptom onset and discharge (latest 10 days after onset)
Infarct progression
Infarct progression is defined as the difference between ischemic core volume quantified on admission CT perfusion scans and infarct volume quantified on delayed neuroimaging.
Measured: Between admission and discharge (latest 10 days after onset)
90-day functional outcome
Functional outcome at 90 days (± 14 days) will be assessed using the modified Rankin Scale (mRS). The mRS is a valid and reliable clinician-reported measure of global disability that has been widely applied for evaluating recovery from stroke. It is a scale used to measure functional recovery (the degree of disability or dependence in daily activities) of people who have suffered a stroke. mRS scores range from 0 (best outcome) to 6 (worst outcome), with 0 indicating no residual symptoms; 5 indicating bedbound, requiring constant care; and 6 indicating death.
Measured: 90 days (± 14 days) after onset
7-day functional outcome
Functional outcome at 7 days (or discharge if earlier) will be assessed using the modified Rankin Scale (mRS). The mRS is a valid and reliable clinician-reported measure of global disability that has been widely applied for evaluating recovery from stroke. It is a scale used to measure functional recovery (the degree of disability or dependence in daily activities) of people who have suffered a stroke. mRS scores range from 0 (best outcome) to 6 (worst outcome), with 0 indicating no residual symptoms; 5 indicating bedbound, requiring constant care; and 6 indicating death.
Measured: 7 days after onset
Early recurrent ischemic stroke
The diagnosis of an early recurrent ischemic stroke will be based on i) sudden onset of a new focal neurological deficit within the first seven days after the index stroke that can not be explained by other non-ischemic causes such as seizure, metabolic derangement, or other systemic conditions, and ii) the presence of a new DWI-positive lesion on MRI or a new ischemic lesion on a delayed CT scan that is distinct from the index stroke lesion and that is consistent with the new clinical symptoms.
Measured: Between admission and discharge (latest 10 days after onset)
Secondary intracerebral hemorrhage
Secondary intracerebral hemorrhage is defined as a new intracerebral hemorrhage independent of the primary ischemic lesion that is observed between the initial hemorrhage-free neuroimaging scan and discharge
Measured: Between admission and discharge (latest 10 days after onset)
Hemorrhagic transformation
The occurrence of hemorrhagic transformation will be evaluated based on the morphological ECASS criteria.20
Measured: Between admission and discharge (latest 10 days after onset)
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted7 Nov 2023
- Study start1 Mar 2023
- Primary completion31 Dec 2026 (estimated)
- Study completion31 Mar 2027 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (25)Papers the sponsor has linked to this study.
- Other trials for StrokeStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Prospective
- Enrolment
- 100 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Ludwig-Maximilians - University of Munich
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Steffen Tiedt, Ludwig-Maximilians - University of Munich
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06121336
- Sponsor's protocol ID
- LMU_ISD_2023_PROMISE-BD-100
- Acronym
- PROMISE-BD-100
- Status last verified
- Aug 2026
- First submitted
- 23 Oct 2023
- Last updated
- 20 Aug 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Yes: Anonymized individual participant data, including data dictionaries, that underlie results in a publication, will be made available.
Publications
GBD 2019 Stroke Collaborators. Global, regional, and national burden of stroke and its risk factors, 1990-2019: a systematic analysis for the Global Burden of Disease Study 2019. Lancet Neurol. 2021 Oct;20(10):795-820. doi: 10.1016/S1474-4422(21)00252-0. Epub 2021 Sep 3.
PubMed 34487721Thomalla G, Boutitie F, Ma H, Koga M, Ringleb P, Schwamm LH, Wu O, Bendszus M, Bladin CF, Campbell BCV, Cheng B, Churilov L, Ebinger M, Endres M, Fiebach JB, Fukuda-Doi M, Inoue M, Kleinig TJ, Latour LL, Lemmens R, Levi CR, Leys D, Miwa K, Molina CA, Muir KW, Nighoghossian N, Parsons MW, Pedraza S, Schellinger PD, Schwab S, Simonsen CZ, Song SS, Thijs V, Toni D, Hsu CY, Wahlgren N, Yamamoto H, Yassi N, Yoshimura S, Warach S, Hacke W, Toyoda K, Donnan GA, Davis SM, Gerloff C; Evaluation of unknown Onset Stroke thrombolysis trials (EOS) investigators. Intravenous alteplase for stroke with unknown time of onset guided by advanced imaging: systematic review and meta-analysis of individual patient data. Lancet. 2020 Nov 14;396(10262):1574-1584. doi: 10.1016/S0140-6736(20)32163-2. Epub 2020 Nov 8.
PubMed 33176180Goyal M, Menon BK, van Zwam WH, Dippel DW, Mitchell PJ, Demchuk AM, Davalos A, Majoie CB, van der Lugt A, de Miquel MA, Donnan GA, Roos YB, Bonafe A, Jahan R, Diener HC, van den Berg LA, Levy EI, Berkhemer OA, Pereira VM, Rempel J, Millan M, Davis SM, Roy D, Thornton J, Roman LS, Ribo M, Beumer D, Stouch B, Brown S, Campbell BC, van Oostenbrugge RJ, Saver JL, Hill MD, Jovin TG; HERMES collaborators. Endovascular thrombectomy after large-vessel ischaemic stroke: a meta-analysis of individual patient data from five randomised trials. Lancet. 2016 Apr 23;387(10029):1723-31. doi: 10.1016/S0140-6736(16)00163-X. Epub 2016 Feb 18.
PubMed 26898852Powers WJ, Rabinstein AA, Ackerson T, Adeoye OM, Bambakidis NC, Becker K, Biller J, Brown M, Demaerschalk BM, Hoh B, Jauch EC, Kidwell CS, Leslie-Mazwi TM, Ovbiagele B, Scott PA, Sheth KN, Southerland AM, Summers DV, Tirschwell DL. Guidelines for the Early Management of Patients With Acute Ischemic Stroke: 2019 Update to the 2018 Guidelines for the Early Management of Acute Ischemic Stroke: A Guideline for Healthcare Professionals From the American Heart Association/American Stroke Association. Stroke. 2019 Dec;50(12):e344-e418. doi: 10.1161/STR.0000000000000211. Epub 2019 Oct 30.
PubMed 31662037Turc G, Tsivgoulis G, Audebert HJ, Boogaarts H, Bhogal P, De Marchis GM, Fonseca AC, Khatri P, Mazighi M, Perez de la Ossa N, Schellinger PD, Strbian D, Toni D, White P, Whiteley W, Zini A, van Zwam W, Fiehler J. European Stroke Organisation - European Society for Minimally Invasive Neurological Therapy expedited recommendation on indication for intravenous thrombolysis before mechanical thrombectomy in patients with acute ischaemic stroke and anterior circulation large vessel occlusion. Eur Stroke J. 2022 Mar;7(1):I-XXVI. doi: 10.1177/23969873221076968. Epub 2022 Feb 17.
PubMed 35300256Turc G, Bhogal P, Fischer U, Khatri P, Lobotesis K, Mazighi M, Schellinger PD, Toni D, de Vries J, White P, Fiehler J. European Stroke Organisation (ESO) - European Society for Minimally Invasive Neurological Therapy (ESMINT) Guidelines on Mechanical Thrombectomy in Acute Ischaemic StrokeEndorsed by Stroke Alliance for Europe (SAFE). Eur Stroke J. 2019 Mar;4(1):6-12. doi: 10.1177/2396987319832140. Epub 2019 Feb 26.
PubMed 31165090Berge E, Whiteley W, Audebert H, De Marchis GM, Fonseca AC, Padiglioni C, de la Ossa NP, Strbian D, Tsivgoulis G, Turc G. European Stroke Organisation (ESO) guidelines on intravenous thrombolysis for acute ischaemic stroke. Eur Stroke J. 2021 Mar;6(1):I-LXII. doi: 10.1177/2396987321989865. Epub 2021 Feb 19.
PubMed 33817340Boulouis G, Lauer A, Siddiqui AK, Charidimou A, Regenhardt RW, Viswanathan A, Rost N, Leslie-Mazwi TM, Schwamm LH. Clinical Imaging Factors Associated With Infarct Progression in Patients With Ischemic Stroke During Transfer for Mechanical Thrombectomy. JAMA Neurol. 2017 Nov 1;74(11):1361-1367. doi: 10.1001/jamaneurol.2017.2149.
PubMed 28973081Ospel JM, McDonough R, Demchuk AM, Menon BK, Almekhlafi MA, Nogueira RG, McTaggart RA, Poppe AY, Buck BH, Roy D, Haussen DC, Chapot R, Field TS, Jayaraman MV, Tymianski M, Hill MD, Goyal M; ESCAPE-NA1 investigators. Predictors and clinical impact of infarct progression rate in the ESCAPE-NA1 trial. J Neurointerv Surg. 2022 Sep;14(9):886-891. doi: 10.1136/neurintsurg-2021-017994. Epub 2021 Sep 7.
PubMed 34493575Olivot JM, Mlynash M, Inoue M, Marks MP, Wheeler HM, Kemp S, Straka M, Zaharchuk G, Bammer R, Lansberg MG, Albers GW; DEFUSE 2 Investigators. Hypoperfusion intensity ratio predicts infarct progression and functional outcome in the DEFUSE 2 Cohort. Stroke. 2014 Apr;45(4):1018-23. doi: 10.1161/STROKEAHA.113.003857. Epub 2014 Mar 4.
PubMed 24595591Lyden P, Buchan A, Boltze J, Fisher M; STAIR XI Consortium*. Top Priorities for Cerebroprotective Studies-A Paradigm Shift: Report From STAIR XI. Stroke. 2021 Aug;52(9):3063-3071. doi: 10.1161/STROKEAHA.121.034947. Epub 2021 Jul 22.
PubMed 34289707Nie X, Leng X, Miao Z, Fisher M, Liu L. Clinically Ineffective Reperfusion After Endovascular Therapy in Acute Ischemic Stroke. Stroke. 2023 Mar;54(3):873-881. doi: 10.1161/STROKEAHA.122.038466. Epub 2022 Dec 7.
PubMed 36475464Tiedt S, Duering M, Barro C, Kaya AG, Boeck J, Bode FJ, Klein M, Dorn F, Gesierich B, Kellert L, Ertl-Wagner B, Goertler MW, Petzold GC, Kuhle J, Wollenweber FA, Peters N, Dichgans M. Serum neurofilament light: A biomarker of neuroaxonal injury after ischemic stroke. Neurology. 2018 Oct 2;91(14):e1338-e1347. doi: 10.1212/WNL.0000000000006282. Epub 2018 Sep 14.
PubMed 30217937Anand N, Stead LG. Neuron-specific enolase as a marker for acute ischemic stroke: a systematic review. Cerebrovasc Dis. 2005;20(4):213-9. doi: 10.1159/000087701. Epub 2005 Aug 22.
PubMed 16123539Herrmann M, Vos P, Wunderlich MT, de Bruijn CH, Lamers KJ. Release of glial tissue-specific proteins after acute stroke: A comparative analysis of serum concentrations of protein S-100B and glial fibrillary acidic protein. Stroke. 2000 Nov;31(11):2670-7. doi: 10.1161/01.str.31.11.2670.
PubMed 11062293