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Differential Metabolic Signature of Stroke Patients Undergoing Thrombolysis (DETECT)

6. februar 2023 opdateret af: Thomas Krieg, Cambridge University Hospitals NHS Foundation Trust

Differential Metabolic Signature of Stroke Patients Undergoing Thrombolysis Compared to Healthy Controls

Currently, there is no reliable biomarker for stroke, meaning that treatment is often delayed and patients are often left with a disability. Stroke is one of the largest causes of mortality (death) and morbidity (disease) in the UK and affects around 120 and 15 people per 100,000 population. This has huge economic implications, with around £9 billion a year being spent on stroke in the UK alone, and health and social care costs accounting for half of this amount. Productivity losses (i.e. income costs) are estimated at £1.33 billion and benefit payments total £840 million per year.

Previous studies involving heart attack patients have suggested that succinate (a biomarker) levels rise after reperfusion (reoxygenation) of the heart tissue and in the context of ischaemia (i.e. when a restriction of blood supply to the heart has caused a heart attack and the tissue has been reoxygenated to improve blood flow around the body). Malonate is a therapeutic option to block this rise in succinate and reduce any potential resulting damage. Animal studies support these findings and have further shown that malonate prevents ischaemic brain damage and reduces the succinate increase in tissue.

However, there is currently no pre-clinical data for the release of succinate into blood, nor for stroke. This study aims to explore whether elevated succinate levels are present in stroke patients having thrombolysis (brain reperfusion). If we can show that elevated succinate levels are attributed to stroke (and not a result of thrombolysis), it might be possible to identify a therapeutic intervention at baseline for these patients and this reduce disability in all stroke patients, and healthcare costs in turn.

Studieoversigt

Status

Afsluttet

Betingelser

Detaljeret beskrivelse

There are around 150,000 incidents of stroke every year in the UK alone. By the age of 75, 1 in 5 women and 1 in 6 men will have had a stroke; 26% of which will have occurred before the age of 65. Moreover, over half of all stroke survivors are left with a disability and 41% of these are discharged from hospital requiring help with daily activities. Without a reliable biomarker for stroke patients, the development of a therapeutic intervention at baseline which has the capability to reduce disability in stroke patients is not possible. There is a dire need for further research into stroke. In 2012, £56 million was spent on stroke-related care/research, compared to £544 million on cancer research and £166 million on heart disease.

Studies involving heart attack patients suggest that succinate could be used as a biomarker for stroke patients. Furthermore, the current therapeutic option used to block the rise in succinate levels, malonate, has been shown to prevent ischaemic brain damage in animal studies. No work to date has explored this phenomenon in humans with stroke and therefore this study has huge potential to bridge the gap in helping to treat stroke patients in the future and thus reduce healthcare costs.

The DETECT study is a pilot study and has been specifically designed to be as simple as possible. For stroke patients undergoing thrombolysis, they will already have a cannula inserted to aid with the procedure. We propose that research bloods could be taken from this same cannula to reduce the burden to the patient. Wherever possible we will conduct the safety follow-up with stroke patients whilst they are still an inpatient at the hospital, to again reduce the burden to the patient.

Undersøgelsestype

Observationel

Tilmelding (Faktiske)

68

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

      • Cambridge, Det Forenede Kongerige
        • Cambridge University Hospitals NHS Foundation Trust

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

18 år og ældre (VOKSEN, OLDER_ADULT)

Tager imod sunde frivillige

Ja

Køn, der er berettiget til at studere

Alle

Prøveudtagningsmetode

Ikke-sandsynlighedsprøve

Studiebefolkning

Secondary care (stroke patients via hospital Accident and Emergency unit and stroke wards) Healthy volunteers - invitation to participate from posters displayed in and around secondary care setting

Beskrivelse

Inclusion Criteria (stroke patients):

  • Be aged 18 years or over
  • Present at Addenbrooke's Hospital A&E with a stroke (ischaemic stroke)
  • Time of onset of confirmed stroke symptoms within 4 hours of arrival in ED
  • Be eligible for thrombolysis
  • Provide informed consent either prior to thrombolysis or after the initial emergency; or personal or nominated consultee declaration following the emergency

Inclusion Criteria (healthy volunteers):

  • Be aged 18 years or over
  • Provide informed consent
  • Be healthy as determined by clinical history and examination by the investigator, a brief physical examination must be unremarkable.

Exclusion Criteria (stroke patients):

  • Patients qualifying for thrombolysis but who do not give consent
  • Patients under the age of 18
  • Patients who are currently actively involved with another clinical trial (including observational studies)

Exclusion Criteria (healthy volunteers):

  • Unable to provide informed written consent
  • Participants under the age of 18
  • Participants who are currently actively involved with another clinical trial (including observational studies)
  • Any medical history or clinically relevant abnormality (from medical notes) that is deemed by the principal investigator and/or suitably qualified delegate to make the subject ineligible for inclusion

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

Kohorter og interventioner

Gruppe / kohorte
Stroke patients
Patient will have thrombolysis treatment as part of their standard care.
Healthy Volunteers
Healthy volunteers to act as control group for stroke patients.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Tidsramme
Measurement of succinate in the same patients before and immediately after thrombolysis
Tidsramme: Up to 12 months
Up to 12 months
Baseline succinate measurement from age-matched healthy volunteers
Tidsramme: Up to 12 months
Up to 12 months

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Assessment of pre and post-thrombolysis blood from stroke patients vs healthy controls
Tidsramme: Up to 12 months
Bloods will be screened using a metabolomics scanner to identify if there are any significant changes in the data
Up to 12 months

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Efterforskere

  • Ledende efterforsker: Thomas Krieg, MD, Cambridge University Hospital NHS Foundation Trust

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (FAKTISKE)

3. juli 2019

Primær færdiggørelse (FAKTISKE)

31. august 2020

Studieafslutning (FAKTISKE)

8. august 2021

Datoer for studieregistrering

Først indsendt

16. februar 2018

Først indsendt, der opfyldte QC-kriterier

16. februar 2018

Først opslået (FAKTISKE)

23. februar 2018

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (FAKTISKE)

8. februar 2023

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

6. februar 2023

Sidst verificeret

1. februar 2023

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • A094594

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

INGEN

IPD-planbeskrivelse

No IPD will be shared with researchers outside of the study team

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

Studerer et amerikansk FDA-reguleret lægemiddelprodukt

Ingen

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ingen

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