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CompletedNCT05395351Updated Dec 20, 2024Results posted

Alteplase in Elderly Acute Ischemic Stroke (AIS) Patients During Hospitalization

An observational study in Stroke, sponsored by Boehringer Ingelheim. Completed at 1 site in China. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2024-12-20.

Sponsored by Boehringer Ingelheim · Observational

Study type
Observational
Model
Cohort
Time perspective
Retrospective
Enrollment
113,035
Ages
18 Years and older
Sex
All
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Study summary

The objective of the study is to find out the in-hospital clinical outcomes among Chinese Acute Ischaemic Stroke (AIS) patients, who were treated with intravenous (IV) Recombinant Tissue Plasminogen Activator (rt-PA) within 4.5 hours of symptom onset in different age groups (18 to 80 years and above 80 years).

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Conditions studied

  • Stroke

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03

In context

Stroke

7,443 studies on the registry are indexed under Stroke; 2,012 are open to participants now.

This study's enrollment of 113,035 is above the median of 160 across 1,729 observational studies indexed under Stroke.

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Lead sponsor

Boehringer Ingelheim is the lead sponsor of 2,297 studies on the registry; 56 are open to participants now.

Of its 166 completed or terminated interventional studies of FDA-regulated products, 121 (73%) have results posted.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Acute ischemic stroke (AIS) patients who were treated with Intravenous (IV) Recombinant Tissue Plasminogen Activator (rt-PA) or did not receive thrombolysis treatment within 4.5 hours of symptom onset, aged ≥18 years old.

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Patient registered in the Chinese Stroke Centre Alliance (CSCA) platform from Aug 2015 to Jul 2019
  • ≥18 years old
  • Diagnosed as Acute Ischemic Stroke (AIS) at admission
  • Arrived or admitted into hospital within 4.5 hours of symptom onset
  • For patients in the iv rt-PA groups only: received IV rt-PA within 4.5 hours of symptom onset

Exclusion criteria

Exclusion Criteria:

  • Documented Intravenous Thrombolysis (IVT) absolute contraindication
  • Key data missing (age, gender, baseline National Institutes of Health Stroke Scale [NIHSS], time of symptom onset, IVT treated or not, time of IV alteplase treatment)
  • Received thrombolysis agents other than IV rt-PA (urokinase, tenecteplase, recombinant plasminogen activator, prourokinase, streptokinase)
  • Received endovascular treatment
  • Received IV rt-PA after 4.5 hours of symptom onset
05

Study design

Observational model
Cohort
Time perspective
Retrospective
Enrollment
113,035 participants (actual)
Patient registry
No

Groups and cohorts

  • Acute ischemic stroke (AIS) patients aged >80 years who received IV rt-PA (Alteplase)

    Group 1: Acute ischemic stroke (AIS) patients aged \>80 years who received intravenous recombinant tissue plasminogen activator (IV rt-PA) (Alteplase) within 4.5 hours of symptom onset.

    Drug: rt-PA

  • Acute ischemic stroke (AIS) patients aged 18 to 80 years who received IV rt-PA (Alteplase)

    Group 2: Acute ischemic stroke (AIS) patients aged 18 to 80 years who received intravenous recombinant tissue plasminogen activator (IV rt-PA) (Alteplase) within 4.5 hours of symptom onset.

    Drug: rt-PA

  • Acute ischemic stroke (AIS) patients aged >80 years without thrombolysis treatment

    Group 3: Acute ischemic stroke (AIS) patients aged \>80 years who arrived or were admitted to the hospital within 4.5 hours of symptom onset and did not receive thrombolysis treatment.

  • Acute ischemic stroke (AIS) patients aged 18 to 80 years without thrombolysis treatment

    Group 4: Acute ischemic stroke (AIS) patients aged 18 to 80 years who arrived or were admitted to the hospital within 4.5 hours of symptom onset and did not receive thrombolysis treatment.

Interventions

  • Drugrt-PA

    Intravenous recombinant tissue plasminogen activator (IV rt-PA)

    Also known as: Alteplase

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What researchers measure

Primary outcomes

  1. All-cause Mortality During Hospitalization of Acute Ischemic Stroke (AIS) Patients

    All-cause mortality during hospitalization of acute ischemic stroke (AIS) patients who received intravenous recombinant tissue plasminogen activator (IV rt-PA).

    Time frame: Up to 100 days.

Secondary outcomes

  1. Percentage of Patients With Hemorrhagic Stroke During Hospitalization

    Percentage of patients with hemorrhagic stroke during hospitalization.

    Time frame: Up to 100 days.

  2. Change of NIHSS Score From Before Intravenous Recombinant Tissue Plasminogen Activator (IV Rt-PA) Treatment to 24 Hours After IV Rt-PA Treatment

    The National Institutes of Health Stroke Scale (NIHSS) is a scale of stroke severity, it ranges from 0 to 42 where a score of 0 indicates no stroke symptoms and higher scores indicate incremental levels of neurologcial impairment.

    Time frame: Up to 24 hours.

  3. Modified Rankin Score (mRS) at Discharge

    The Modified Rankin Score (mRS) ranges from 0 to 6, where 0 indicates no symptoms, 1 no significant disability, 2 slight disability, 3 moderate disability, 4 moderately severe disability, 5 severe disability and 6 death.

    Time frame: Up to 100 days.

  4. Number of Patients With Stroke Recurrence During Hospitalization

    Number of patients with stroke recurrence during hospitalization.

    Time frame: Up to 100 days.

  5. Length of Hospitalization

    Length of hospitalization.

    Time frame: Up to 100 days.

  6. Percentage of Intravenous Recombinant Tissue Plasminogen Activator (IV Rt-PA) Treatment Among Acute Ischemic Stroke (AIS) Patients Arrived or Were Admitted to the Hospital Within 4.5 Hours of Symptom Onset

    Percentage of intravenous recombinant tissue plasminogen activator (IV rt-PA) treatment among acute ischemic stroke (AIS) patients arrived or were admitted to the hospital within 4.5 hours of symptom onset.

    Time frame: Up to 4.5 hours.

  7. Percentage of Intravenous Recombinant Tissue Plasminogen Activator (IV Rt-PA) Treatment Within 4.5 Hours of Symptom Onset Among Eligible AIS Patients (3.5-hour Arrival or Admission)

    Percentage of intravenous recombinant tissue plasminogen activator (IV rt-PA) treatment within 4.5 hours of symptom onset among eligible AIS patients (3.5-hour arrival or admission).

    Time frame: Up to 4.5 hours.

07

Results

Posted Dec 20, 2024
Limitations and caveats
Hospital participation in the Chinese Stroke Centre Alliance (CSCA) was voluntary. To avoid selection bias, all patients were included without sampling when dataset was extracted. The larger sample size and broad geological distribution increased representativeness. Data collected by hospitals were not audited by external chart review. Data reliability depends on training for data abstractors and automated checks to identify erroneous, illogical data entries.

Participant flow

In this study the Chinese Stroke Centre Alliance (CSCA) data was used to describe the in-hospital clinical outcomes regarding safety and effectiveness for acute ischemic stroke (AIS) patients who were treated with intravenous recombinant tissue plasminogen activator (IV rt-PA) within 4.5 hours of symptom onset, aged above 80 years, as well as between 18 and 80 years.

Participant flow — Overall Study
MilestoneAcute Ischemic Stroke (AIS) Patients Aged >80 Years Who Received IV Rt-PA (Alteplase)Acute Ischemic Stroke (AIS) Patients Aged 18 to 80 Years Who Received IV Rt-PA (Alteplase)Acute Ischemic Stroke (AIS) Patients Aged >80 Years Without Thrombolysis TreatmentAcute Ischemic Stroke (AIS) Patients Aged 18 to 80 Years Without Thrombolysis Treatment
Started3332280861253369084
Completed3332280861253369084
Not completed0000

Outcome measures

PrimaryAll-cause Mortality During Hospitalization of Acute Ischemic Stroke (AIS) Patients

All-cause mortality during hospitalization of acute ischemic stroke (AIS) patients who received intravenous recombinant tissue plasminogen activator (IV rt-PA).

Time frame:
Up to 100 days.
Reported as:
Number · Percentage of participants
All-cause Mortality During Hospitalization of Acute Ischemic Stroke (AIS) Patients
Percentage of participantsAcute Ischemic Stroke (AIS) Patients Aged >80 Years Who Received IV Rt-PA (Alteplase)Acute Ischemic Stroke (AIS) Patients Aged 18 to 80 Years Who Received IV Rt-PA (Alteplase)
All-cause Mortality During Hospitalization of Acute Ischemic Stroke (AIS) Patients2.6 (2.1 to 3.2)0.8 (0.7 to 0.9)
SecondaryPercentage of Patients With Hemorrhagic Stroke During Hospitalization

Percentage of patients with hemorrhagic stroke during hospitalization.

Time frame:
Up to 100 days.
Reported as:
Number · Percentage of subjects
Percentage of Patients With Hemorrhagic Stroke During Hospitalization
Percentage of subjectsAcute Ischemic Stroke (AIS) Patients Aged >80 Years Who Received IV Rt-PA (Alteplase)Acute Ischemic Stroke (AIS) Patients Aged 18 to 80 Years Who Received IV Rt-PA (Alteplase)
Percentage of Patients With Hemorrhagic Stroke During Hospitalization6.7 (5.8 to 7.5)3.1 (2.9 to 3.3)
SecondaryChange of NIHSS Score From Before Intravenous Recombinant Tissue Plasminogen Activator (IV Rt-PA) Treatment to 24 Hours After IV Rt-PA Treatment

The National Institutes of Health Stroke Scale (NIHSS) is a scale of stroke severity, it ranges from 0 to 42 where a score of 0 indicates no stroke symptoms and higher scores indicate incremental levels of neurologcial impairment.

Time frame:
Up to 24 hours.
Reported as:
Mean · Score on a scale
Change of NIHSS Score From Before Intravenous Recombinant Tissue Plasminogen Activator (IV Rt-PA) Treatment to 24 Hours After IV Rt-PA Treatment
Score on a scaleAcute Ischemic Stroke (AIS) Patients Aged >80 Years Who Received IV Rt-PA (Alteplase)Acute Ischemic Stroke (AIS) Patients Aged 18 to 80 Years Who Received IV Rt-PA (Alteplase)
Change of NIHSS Score From Before Intravenous Recombinant Tissue Plasminogen Activator (IV Rt-PA) Treatment to 24 Hours After IV Rt-PA Treatment2.8 ± 5.02.5 ± 4.3
SecondaryModified Rankin Score (mRS) at Discharge

The Modified Rankin Score (mRS) ranges from 0 to 6, where 0 indicates no symptoms, 1 no significant disability, 2 slight disability, 3 moderate disability, 4 moderately severe disability, 5 severe disability and 6 death.

Time frame:
Up to 100 days.
Reported as:
Count of participants · Participants
Modified Rankin Score (mRS) at Discharge
ParticipantsAcute Ischemic Stroke (AIS) Patients Aged >80 Years Who Received IV Rt-PA (Alteplase)Acute Ischemic Stroke (AIS) Patients Aged 18 to 80 Years Who Received IV Rt-PA (Alteplase)
mRS score 03835447
mRS score 16126427
mRS score 22812131
mRS score 32161393
mRS score 43992163
mRS score 5346902
mRS score 688211
SecondaryNumber of Patients With Stroke Recurrence During Hospitalization

Number of patients with stroke recurrence during hospitalization.

Time frame:
Up to 100 days.
Reported as:
Count of participants · Participants
Number of Patients With Stroke Recurrence During Hospitalization
ParticipantsAcute Ischemic Stroke (AIS) Patients Aged >80 Years Who Received IV Rt-PA (Alteplase)Acute Ischemic Stroke (AIS) Patients Aged 18 to 80 Years Who Received IV Rt-PA (Alteplase)
Number of Patients With Stroke Recurrence During Hospitalization3692039
SecondaryLength of Hospitalization

Length of hospitalization.

Time frame:
Up to 100 days.
Reported as:
Mean · days
Length of Hospitalization
daysAcute Ischemic Stroke (AIS) Patients Aged >80 Years Who Received IV Rt-PA (Alteplase)Acute Ischemic Stroke (AIS) Patients Aged 18 to 80 Years Who Received IV Rt-PA (Alteplase)
Length of Hospitalization12.7 ± 9.611.5 ± 7.6
SecondaryPercentage of Intravenous Recombinant Tissue Plasminogen Activator (IV Rt-PA) Treatment Among Acute Ischemic Stroke (AIS) Patients Arrived or Were Admitted to the Hospital Within 4.5 Hours of Symptom Onset

Percentage of intravenous recombinant tissue plasminogen activator (IV rt-PA) treatment among acute ischemic stroke (AIS) patients arrived or were admitted to the hospital within 4.5 hours of symptom onset.

Time frame:
Up to 4.5 hours.
Reported as:
Number · Percentage of participants
Percentage of Intravenous Recombinant Tissue Plasminogen Activator (IV Rt-PA) Treatment Among Acute Ischemic Stroke (AIS) Patients Arrived or Were Admitted to the Hospital Within 4.5 Hours of Symptom Onset
Percentage of participantsAcute Ischemic Stroke (AIS) Patients Aged >80 YearsAcute Ischemic Stroke (AIS) Patients Aged 18 to 80 Years
Percentage of Intravenous Recombinant Tissue Plasminogen Activator (IV Rt-PA) Treatment Among Acute Ischemic Stroke (AIS) Patients Arrived or Were Admitted to the Hospital Within 4.5 Hours of Symptom Onset21.0 (20.4 to 21.6)28.9 (28.6 to 29.2)
SecondaryPercentage of Intravenous Recombinant Tissue Plasminogen Activator (IV Rt-PA) Treatment Within 4.5 Hours of Symptom Onset Among Eligible AIS Patients (3.5-hour Arrival or Admission)

Percentage of intravenous recombinant tissue plasminogen activator (IV rt-PA) treatment within 4.5 hours of symptom onset among eligible AIS patients (3.5-hour arrival or admission).

Time frame:
Up to 4.5 hours.
Reported as:
Number · Percentage of participants
Percentage of Intravenous Recombinant Tissue Plasminogen Activator (IV Rt-PA) Treatment Within 4.5 Hours of Symptom Onset Among Eligible AIS Patients (3.5-hour Arrival or Admission)
Percentage of participantsAcute Ischemic Stroke (AIS) Patients Aged >80 YearsAcute Ischemic Stroke (AIS) Patients Aged 18 to 80 Years
Percentage of Intravenous Recombinant Tissue Plasminogen Activator (IV Rt-PA) Treatment Within 4.5 Hours of Symptom Onset Among Eligible AIS Patients (3.5-hour Arrival or Admission)23.9 (23.2 to 24.6)32.2 (31.8 to 32.5)

Adverse events

Collected over Adverse event information was not applicable for this study. All-cause mortality was only collected and reported for group 1 and group 2 for up to 100 days.. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Acute Ischemic Stroke (AIS) Patients Aged >80 Years Who Received IV Rt-PA (Alteplase)88/3,332 (2.6%)——
Acute Ischemic Stroke (AIS) Patients Aged 18 to 80 Years Who Received IV Rt-PA (Alteplase)211/28,086 (0.8%)——
Acute Ischemic Stroke (AIS) Patients Aged >80 Years Without Thrombolysis Treatment———
Acute Ischemic Stroke (AIS) Patients Aged 18 to 80 Years Without Thrombolysis Treatment———

Baseline characteristics

Patients registered in the Chinese Stroke Centre Alliance (CSCA) platform from August 2015 to July 2019 with an acute ischemic stroke (AIS) diagnoses at admission.

Age, Continuous
Age, Continuous(years)Acute Ischemic Stroke (AIS) Patients Aged >80 Years Who Received IV Rt-PA (Alteplase)Acute Ischemic Stroke (AIS) Patients Aged 18 to 80 Years Who Received IV Rt-PA (Alteplase)Acute Ischemic Stroke (AIS) Patients Aged >80 Years Without Thrombolysis TreatmentAcute Ischemic Stroke (AIS) Patients Aged 18 to 80 Years Without Thrombolysis TreatmentTotal
Mean84.4 ± 3.263.2 ± 10.784.9 ± 3.464.2 ± 10.466.8 ± 12.2
Sex: Female, Male
Sex: Female, Male(Participants)Acute Ischemic Stroke (AIS) Patients Aged >80 Years Who Received IV Rt-PA (Alteplase)Acute Ischemic Stroke (AIS) Patients Aged 18 to 80 Years Who Received IV Rt-PA (Alteplase)Acute Ischemic Stroke (AIS) Patients Aged >80 Years Without Thrombolysis TreatmentAcute Ischemic Stroke (AIS) Patients Aged 18 to 80 Years Without Thrombolysis TreatmentTotal
Female1710918864182440941725
Male16221889861154467571310
Race and Ethnicity Not Collected
Race and Ethnicity Not Collected(Participants)Acute Ischemic Stroke (AIS) Patients Aged >80 Years Who Received IV Rt-PA (Alteplase)Acute Ischemic Stroke (AIS) Patients Aged 18 to 80 Years Who Received IV Rt-PA (Alteplase)Acute Ischemic Stroke (AIS) Patients Aged >80 Years Without Thrombolysis TreatmentAcute Ischemic Stroke (AIS) Patients Aged 18 to 80 Years Without Thrombolysis TreatmentTotal
Count of participants————0
08

Study locations

1 site
  • Boehringer Ingelheim (China) Investment Co., ltd.
    Shanghai, 200040, China
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References and documents

Publications

  • Jiang Y, Wang C, Gu H, Zhou Q, Jiang Y, Li Z, Wang Y. In-hospital outcomes of intravenous recombinant tissue plasminogen activator treatment for acute ischemic stroke in patients aged >80 years: Findings from the Chinese Stroke Center Alliance. J Stroke Cerebrovasc Dis. 2025 Jan;34(1):108102. doi: 10.1016/j.jstrokecerebrovasdis.2024.108102. Epub 2024 Oct 28. PubMed 39477171 ↗

Related links

Study documents

  • Study protocol · Sep 22, 2021
  • Statistical analysis plan · Jan 28, 2022

Documents are hosted by the registry — open the source record to download them.

Individual participant data

Plan to share: No — Clinical studies sponsored by Boehringer Ingelheim, phases I to IV, interventional and non-interventional, are in scope for sharing of the raw clinical study data and clinical study documents. Exceptions might apply, e.g. studies in products where Boehringer Ingelheim is not the license holder; studies regarding pharmaceutical formulations and associated analytical methods, and studies pertinent to pharmacokinetics using human biomaterials; studies conducted in a single center or targeting rare diseases (in case of low number of patients and therefore limitations with anonymization). For more details refer to: https://www.mystudywindow.com/msw/datatransparency

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Dec 20, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT05395351
Responsible party
Sponsor
First posted
May 27, 2022
Start date
Nov 30, 2022
Primary completion
Mar 28, 2023
Completion
Mar 28, 2023
Results posted
Dec 20, 2024
Last update
Dec 20, 2024

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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