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Trial details imported from ClinicalTrials.gov

For full trial details, please see the original record at https://clinicaltrials.gov/study/NCT00716079




Registration number
NCT00716079
Ethics application status
Date submitted
14/07/2008
Date registered
16/07/2008
Date last updated
13/12/2013

Titles & IDs
Public title
The Second Intensive Blood Pressure Reduction in Acute Cerebral Haemorrhage Trial
Scientific title
An International Randomised Controlled Trial to Establish the Effects of Early Intensive Blood Pressure Lowering in Patients With Intracerebral Haemorrhage.
Secondary ID [1] 0 0
NHMRC-571281
Universal Trial Number (UTN)
Trial acronym
INTERACT2
Linked study record

Health condition
Health condition(s) or problem(s) studied:
Intracerebral Hemorrhage 0 0
Stroke 0 0
Hypertension 0 0
Condition category
Condition code
Stroke 0 0 0 0
Haemorrhagic
Neurological 0 0 0 0
Other neurological disorders

Intervention/exposure
Study type
Interventional
Description of intervention(s) / exposure
Other interventions - Blood pressure management policies

Other: Intensive BP lowering - Management policy to lower the systolic Blood pressure (BP) to a target of 140mmHg within 1 hour of randomization and sustained for 24 hours. Sites were provided with protocols for different intravenous agents and used whichever routinely available drugs were in their hospital.

Other: Guideline recommended BP lowering - Patients received management of BP based on the standard guidelines at the time, as published by the American Heart Association (AHA) in 2007 and 2010. The attending clinician may consider commencing BP treatment if the systolic level is greater than 180 mmHg, however and the first line treatment will be oral (including nasogastric if required) and/or transdermal routes. Should control of systolic BP not be achieved via these routes, intravenous treatment may be started until the target systolic BP of 180 mmHg is achieved.


Other interventions: Blood pressure management policies
The trial is an assessment of BP lowering management strategies, using routinely available drugs. There is some flexibility in the use of particular BP lowering agents to achieve BP targets.
Intervention code [1] 0 0
Other interventions
Comparator / control treatment
Control group

Outcomes
Primary outcome [1] 0 0
A Composite of Death or Dependency, With Dependency Being Defined by a Score of 3 to 5 on the Modified Rankin Scale (mRS)
Timepoint [1] 0 0
90 days
Secondary outcome [1] 0 0
Death at 90 Days
Timepoint [1] 0 0
90 days

Eligibility
Key inclusion criteria
* Patients with CT-confirmed spontaneous Intracerebral Haemorrhage (ICH)
* Elevated systolic blood pressure (>150mmHg and <220mmHg)
* Capacity to commence randomly assigned treatment within 6 hours of onset of ICH.
* Able to be 'actively' treated and admitted to a monitored facility
Minimum age
18 Years
Maximum age
No limit
Sex
Both males and females
Can healthy volunteers participate?
No
Key exclusion criteria
* Clear indication or contraindication to intensive BP lowering.
* Evidence ICH secondary to a structural abnormality
* Use of thrombolytic agent
* Previous ischaemic stroke within 30 days
* A very high likelihood that the patient will die within the next 24 hours on the basis of clinical and/or radiological criteria
* Score of 3-5 on the Glasgow Coma Scale (indicating deep coma)
* Significant pre-stroke disability or advanced dementia
* Planned early neurological intervention
* Participation in another clinical trial.
* A high likelihood that the patient will not adhere to the study treatment and follow-up regimen.

Study design
Purpose of the study
Treatment
Allocation to intervention
Randomised controlled trial
Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
Methods used to generate the sequence in which subjects will be randomised (sequence generation)
Masking / blinding
Open (masking not used)
Who is / are masked / blinded?



Intervention assignment
Parallel
Other design features
Phase
Not applicable
Type of endpoint/s
Statistical methods / analysis

Recruitment
Recruitment status
Completed
Data analysis
Reason for early stopping/withdrawal
Other reasons
Date of first participant enrolment
Anticipated
Actual
1/09/2008
Date of last participant enrolment
Anticipated
Actual
Date of last data collection
Anticipated
Actual
1/12/2012
Sample size
Target
Accrual to date
Final
2839
Recruitment in Australia
Recruitment state(s)
ACT,NSW,QLD,VIC,WA
Recruitment hospital [1] 0 0
Canberra Hospital - Canberra
Recruitment hospital [2] 0 0
Concord Hospital - Concord
Recruitment hospital [3] 0 0
Gosford Hospital - Gosford
Recruitment hospital [4] 0 0
John Hunter Hospital - Newcastle
Recruitment hospital [5] 0 0
Royal Prince Alfred Hospital - Sydney
Recruitment hospital [6] 0 0
Royal Brisbane and Women's Hospital Health Service District - Brisbane
Recruitment hospital [7] 0 0
Western Hospital - Melbourne
Recruitment hospital [8] 0 0
Royal Melbourne Hospital - Melbourne
Recruitment hospital [9] 0 0
Austin Repatriation General Hospital - Melbourne
Recruitment hospital [10] 0 0
Box Hill Hospital - Melbourne
Recruitment hospital [11] 0 0
Monash Medical Centre - Melbourne
Recruitment hospital [12] 0 0
Sir Charles Gairdner Hospital - Perth
Recruitment postcode(s) [1] 0 0
2605 - Canberra
Recruitment postcode(s) [2] 0 0
2138 - Concord
Recruitment postcode(s) [3] 0 0
2250 - Gosford
Recruitment postcode(s) [4] 0 0
2310 - Newcastle
Recruitment postcode(s) [5] 0 0
2050 - Sydney
Recruitment postcode(s) [6] 0 0
4029 - Brisbane
Recruitment postcode(s) [7] 0 0
3011 - Melbourne
Recruitment postcode(s) [8] 0 0
3050 - Melbourne
Recruitment postcode(s) [9] 0 0
3081 - Melbourne
Recruitment postcode(s) [10] 0 0
3128 - Melbourne
Recruitment postcode(s) [11] 0 0
3168 - Melbourne
Recruitment postcode(s) [12] 0 0
6009 - Perth
Recruitment outside Australia
Country [1] 0 0
United States of America
State/province [1] 0 0
Minnesota
Country [2] 0 0
Argentina
State/province [2] 0 0
Buenos Aires
Country [3] 0 0
Austria
State/province [3] 0 0
Graz
Country [4] 0 0
Austria
State/province [4] 0 0
Innsbruck
Country [5] 0 0
Austria
State/province [5] 0 0
Linz
Country [6] 0 0
Belgium
State/province [6] 0 0
Jette
Country [7] 0 0
Belgium
State/province [7] 0 0
La Louviere
Country [8] 0 0
Brazil
State/province [8] 0 0
Sao Paulo
Country [9] 0 0
Chile
State/province [9] 0 0
Santiago
Country [10] 0 0
China
State/province [10] 0 0
Beijing
Country [11] 0 0
China
State/province [11] 0 0
Shanghai
Country [12] 0 0
Finland
State/province [12] 0 0
Helsinki
Country [13] 0 0
France
State/province [13] 0 0
Besancon
Country [14] 0 0
France
State/province [14] 0 0
Brest
Country [15] 0 0
France
State/province [15] 0 0
Calais
Country [16] 0 0
France
State/province [16] 0 0
Kremlin-Bicetre
Country [17] 0 0
France
State/province [17] 0 0
Lille
Country [18] 0 0
France
State/province [18] 0 0
Meaux
Country [19] 0 0
France
State/province [19] 0 0
Nantes
Country [20] 0 0
France
State/province [20] 0 0
Paris
Country [21] 0 0
France
State/province [21] 0 0
Saint-Denis
Country [22] 0 0
France
State/province [22] 0 0
Versailles
Country [23] 0 0
Germany
State/province [23] 0 0
Berlin
Country [24] 0 0
Germany
State/province [24] 0 0
Dresden
Country [25] 0 0
Germany
State/province [25] 0 0
Dusseldorf
Country [26] 0 0
Germany
State/province [26] 0 0
Erlangen
Country [27] 0 0
Germany
State/province [27] 0 0
Frankfurt
Country [28] 0 0
Germany
State/province [28] 0 0
Halle
Country [29] 0 0
Germany
State/province [29] 0 0
Hamburg
Country [30] 0 0
Germany
State/province [30] 0 0
Heidelberg
Country [31] 0 0
Germany
State/province [31] 0 0
Mannheim
Country [32] 0 0
Germany
State/province [32] 0 0
Ulm
Country [33] 0 0
Hong Kong
State/province [33] 0 0
Sha Tin
Country [34] 0 0
India
State/province [34] 0 0
Andhra Pradesh
Country [35] 0 0
Italy
State/province [35] 0 0
Citta di Castello
Country [36] 0 0
Pakistan
State/province [36] 0 0
Karachi
Country [37] 0 0
Portugal
State/province [37] 0 0
Porto
Country [38] 0 0
Spain
State/province [38] 0 0
Albacete
Country [39] 0 0
Spain
State/province [39] 0 0
Barcelona
Country [40] 0 0
Spain
State/province [40] 0 0
Girona
Country [41] 0 0
Switzerland
State/province [41] 0 0
Bern
Country [42] 0 0
United Kingdom
State/province [42] 0 0
Leicester

Funding & Sponsors
Primary sponsor type
Other
Name
The George Institute
Address
Country
Other collaborator category [1] 0 0
Other
Name [1] 0 0
National Health and Medical Research Council, Australia
Address [1] 0 0
Country [1] 0 0

Ethics approval
Ethics application status

Summary
Brief summary
The purpose of this academic lead study is to determine if a treatment strategy of early intensive blood pressure (BP) lowering compared to conservative BP lowering policy in patients with elevated blood pressure within 6 hours of acute intracerebral haemorrhage (ICH) improves the outcome of death and disability at 3 months after onset.
Trial website
https://clinicaltrials.gov/study/NCT00716079
Trial related presentations / publications
Anderson CS, Huang Y, Wang JG, Arima H, Neal B, Peng B, Heeley E, Skulina C, Parsons MW, Kim JS, Tao QL, Li YC, Jiang JD, Tai LW, Zhang JL, Xu E, Cheng Y, Heritier S, Morgenstern LB, Chalmers J; INTERACT Investigators. Intensive blood pressure reduction in acute cerebral haemorrhage trial (INTERACT): a randomised pilot trial. Lancet Neurol. 2008 May;7(5):391-9. doi: 10.1016/S1474-4422(08)70069-3. Epub 2008 Apr 7.
Delcourt C, Huang Y, Wang J, Heeley E, Lindley R, Stapf C, Tzourio C, Arima H, Parsons M, Sun J, Neal B, Chalmers J, Anderson C; INTERACT2 Investigators. The second (main) phase of an open, randomised, multicentre study to investigate the effectiveness of an intensive blood pressure reduction in acute cerebral haemorrhage trial (INTERACT2). Int J Stroke. 2010 Apr;5(2):110-6. doi: 10.1111/j.1747-4949.2010.00415.x.
Malavera A, You S, Zheng D, Delcourt C, Anderson CS; INTERACT2 Investigators. Prognostic significance of early pyrexia in acute intracerebral haemorrhage: The INTERACT2 study. J Neurol Sci. 2021 Apr 15;423:117364. doi: 10.1016/j.jns.2021.117364. Epub 2021 Feb 26.
Sandset EC, Wang X, Carcel C, Sato S, Delcourt C, Arima H, Stapf C, Robinson T, Lavados P, Chalmers J, Woodward M, Anderson CS. Sex differences in treatment, radiological features and outcome after intracerebral haemorrhage: Pooled analysis of Intensive Blood Pressure Reduction in Acute Cerebral Haemorrhage trials 1 and 2. Eur Stroke J. 2020 Dec;5(4):345-350. doi: 10.1177/2396987320957513. Epub 2020 Sep 20.
Song L, Wang X, Ouyang M, Sun L, Chen X, Arima H, Sandset EC, Delcourt C, Wang J, Chen G, Robinson T, Lindley RI, Chalmers J, Anderson CS; INTERACT2 Investigators. Associations of an Abnormal Physiological Score With Outcomes in Acute Intracerebral Hemorrhage: INTERACT2 Study. Stroke. 2021 Jan;52(2):722-725. doi: 10.1161/STROKEAHA.120.030435. Epub 2021 Jan 11.
Wang X, Moullaali TJ, Li Q, Berge E, Robinson TG, Lindley R, Zheng D, Delcourt C, Arima H, Song L, Chen X, Yang J, Chalmers J, Anderson CS, Sandset EC. Utility-Weighted Modified Rankin Scale Scores for the Assessment of Stroke Outcome: Pooled Analysis of 20 000+ Patients. Stroke. 2020 Aug;51(8):2411-2417. doi: 10.1161/STROKEAHA.119.028523. Epub 2020 Jul 9.
You S, Zheng D, Delcourt C, Sato S, Cao Y, Zhang S, Yang J, Wang X, Lindley RI, Robinson T, Anderson CS, Chalmers J. Determinants of Early Versus Delayed Neurological Deterioration in Intracerebral Hemorrhage. Stroke. 2019 Jun;50(6):1409-1414. doi: 10.1161/STROKEAHA.118.024403. Epub 2019 Apr 18.
Wang X, Sandset EC, Moullaali TJ, Chen G, Song L, Carcel C, Delcourt C, Woodward M, Robinson T, Chalmers J, Arima H, Anderson CS; INTERACT2 Investigators. Determinants of the high admission blood pressure in mild-to-moderate acute intracerebral hemorrhage. J Hypertens. 2019 Jul;37(7):1463-1466. doi: 10.1097/HJH.0000000000002056.
Chen R, Wang X, Anderson CS, Robinson T, Lavados PM, Lindley RI, Chalmers J, Delcourt C. Infratentorial Intracerebral Hemorrhage. Stroke. 2019 May;50(5):1257-1259. doi: 10.1161/STROKEAHA.118.023766.
Moullaali TJ, Wang X, Martin RH, Shipes VB, Qureshi AI, Anderson CS, Palesch YY. Statistical analysis plan for pooled individual patient data from two landmark randomized trials (INTERACT2 and ATACH-II) of intensive blood pressure lowering treatment in acute intracerebral hemorrhage. Int J Stroke. 2019 Apr;14(3):321-328. doi: 10.1177/1747493018813695. Epub 2018 Nov 12.
Delcourt C, Sato S, Zhang S, Sandset EC, Zheng D, Chen X, Hackett ML, Arima H, Hata J, Heeley E, Al-Shahi Salman R, Robinson T, Davies L, Lavados PM, Lindley RI, Stapf C, Chalmers J, Anderson CS; INTERACT2 Investigators. Intracerebral hemorrhage location and outcome among INTERACT2 participants. Neurology. 2017 Apr 11;88(15):1408-1414. doi: 10.1212/WNL.0000000000003771. Epub 2017 Feb 24.
Delcourt C, Zheng D, Chen X, Hackett M, Arima H, Hata J, Heeley E, Al-Shahi Salman R, Woodward M, Huang Y, Robinson T, Lavados PM, Lindley RI, Stapf C, Davies L, Chalmers J, Anderson CS, Sato S; INTERACT Investigators. Associations with health-related quality of life after intracerebral haemorrhage: pooled analysis of INTERACT studies. J Neurol Neurosurg Psychiatry. 2017 Jan;88(1):70-75. doi: 10.1136/jnnp-2016-314414. Epub 2016 Oct 21.
Munoz Venturelli P, Wang X, Zahuranec DB, Lavados PM, Stapf C, Lindley R, Delcourt C, Chalmers J, Anderson CS, Robinson TG, Robinson TG; INTERACT2 Investigators. Withdrawal of active treatment after intracerebral haemorrhage in the INTERACT2 study. Age Ageing. 2017 Mar 1;46(2):329-332. doi: 10.1093/ageing/afw187.
Song L, Sandset EC, Arima H, Heeley E, Delcourt C, Chen G, Yang J, Wu G, Wang X, Lavados PM, Huang Y, Stapf C, Wang J, Robinson TG, Chalmers J, Lindley RI, Anderson CS; INTERACT2 Investigators. Early blood pressure lowering in patients with intracerebral haemorrhage and prior use of antithrombotic agents: pooled analysis of the INTERACT studies. J Neurol Neurosurg Psychiatry. 2016 Dec;87(12):1330-1335. doi: 10.1136/jnnp-2016-313246. Epub 2016 May 13.
Qiu M, Sato S, Zheng D, Wang X, Carcel C, Hirakawa Y, Sandset EC, Delcourt C, Arima H, Wang J, Chalmers J, Anderson CS; INTERACT Investigators*. Admission Heart Rate Predicts Poor Outcomes in Acute Intracerebral Hemorrhage: The Intensive Blood Pressure Reduction in Acute Cerebral Hemorrhage Trial Studies. Stroke. 2016 Jun;47(6):1479-85. doi: 10.1161/STROKEAHA.115.012382. Epub 2016 May 10.
Carcel C, Wang X, Sato S, Stapf C, Sandset EC, Delcourt C, Arima H, Robinson T, Lavados P, Chalmers J, Anderson CS; INTERACT2 Investigators*. Degree and Timing of Intensive Blood Pressure Lowering on Hematoma Growth in Intracerebral Hemorrhage: Intensive Blood Pressure Reduction in Acute Cerebral Hemorrhage Trial-2 Results. Stroke. 2016 Jun;47(6):1651-3. doi: 10.1161/STROKEAHA.116.013326. Epub 2016 May 3.
Delcourt C, Zhang S, Arima H, Sato S, Al-Shahi Salman R, Wang X, Davies L, Stapf C, Robinson T, Lavados PM, Chalmers J, Heeley E, Liu M, Lindley RI, Anderson CS; INTERACT2 investigators. Significance of Hematoma Shape and Density in Intracerebral Hemorrhage: The Intensive Blood Pressure Reduction in Acute Intracerebral Hemorrhage Trial Study. Stroke. 2016 May;47(5):1227-32. doi: 10.1161/STROKEAHA.116.012921. Epub 2016 Apr 12.
Munoz-Venturelli P, Wang X, Lavados PM, Stapf C, Robinson T, Lindley R, Heeley E, Delcourt C, Chalmers J, Anderson CS; INTERACT2 Investigators. Prophylactic heparin in acute intracerebral hemorrhage: a propensity score-matched analysis of the INTERACT2 study. Int J Stroke. 2016 Jul;11(5):549-56. doi: 10.1177/1747493016641113. Epub 2016 Mar 23.
Zheng D, Arima H, Sato S, Gasparrini A, Heeley E, Delcourt C, Lo S, Huang Y, Wang J, Stapf C, Robinson T, Lavados P, Chalmers J, Anderson CS; INTERACT2 investigators. Low Ambient Temperature and Intracerebral Hemorrhage: The INTERACT2 Study. PLoS One. 2016 Feb 9;11(2):e0149040. doi: 10.1371/journal.pone.0149040. eCollection 2016.
Sato S, Delcourt C, Heeley E, Arima H, Zhang S, Al-Shahi Salman R, Stapf C, Woo D, Flaherty ML, Vagal A, Levi C, Davies L, Wang J, Robinson T, Lavados PM, Lindley RI, Chalmers J, Anderson CS; INTERACT2 Investigators. Significance of Cerebral Small-Vessel Disease in Acute Intracerebral Hemorrhage. Stroke. 2016 Mar;47(3):701-7. doi: 10.1161/STROKEAHA.115.012147. Epub 2016 Feb 4.
Saxena A, Anderson CS, Wang X, Sato S, Arima H, Chan E, Munoz-Venturelli P, Delcourt C, Robinson T, Stapf C, Lavados PM, Wang J, Neal B, Chalmers J, Heeley E; INTERACT2 Investigators. Prognostic Significance of Hyperglycemia in Acute Intracerebral Hemorrhage: The INTERACT2 Study. Stroke. 2016 Mar;47(3):682-8. doi: 10.1161/STROKEAHA.115.011627. Epub 2016 Jan 26.
Yu S, Arima H, Heeley E, Delcourt C, Krause M, Peng B, Yang J, Wu G, Chen X, Chalmers J, Anderson CS; INTERACT2 Investigators. White blood cell count and clinical outcomes after intracerebral hemorrhage: The INTERACT2 trial. J Neurol Sci. 2016 Feb 15;361:112-6. doi: 10.1016/j.jns.2015.12.033. Epub 2015 Dec 22.
Moullaali TJ, Sato S, Wang X, Rabinstein AA, Arima H, Carcel C, Chen G, Robinson T, Heeley E, Chan E, Delcourt C, Stapf C, Cordonnier C, Lindley RI, Chalmers J, Anderson CS; INTERACT Investigators. Prognostic significance of delayed intraventricular haemorrhage in the INTERACT studies. J Neurol Neurosurg Psychiatry. 2017 Jan;88(1):19-24. doi: 10.1136/jnnp-2015-311562. Epub 2016 Jan 8.
Wang X, Arima H, Yang J, Zhang S, Wu G, Woodward M, Munoz-Venturelli P, Lavados PM, Stapf C, Robinson T, Heeley E, Delcourt C, Lindley RI, Parsons M, Chalmers J, Anderson CS; INTERACT2 Investigators. Mannitol and Outcome in Intracerebral Hemorrhage: Propensity Score and Multivariable Intensive Blood Pressure Reduction in Acute Cerebral Hemorrhage Trial 2 Results. Stroke. 2015 Oct;46(10):2762-7. doi: 10.1161/STROKEAHA.115.009357. Epub 2015 Aug 11.
Sato S, Arima H, Heeley E, Hirakawa Y, Delcourt C, Lindley RI, Robinson T, Huang Y, Morgenstern L, Stapf C, Wang J, Chalmers J, Anderson CS; INTERACT2 Investigators. Off-Hour Admission and Outcomes in Patients with Acute Intracerebral Hemorrhage in the INTERACT2 Trial. Cerebrovasc Dis. 2015;40(3-4):114-20. doi: 10.1159/000434690. Epub 2015 Jul 18.
Heeley E, Anderson CS, Woodward M, Arima H, Robinson T, Stapf C, Parsons M, Lavados PM, Huang Y, Wang Y, Crozier S, Parry-Jones A, Wang J, Chalmers J; INTERACT2 Investigators. Poor utility of grading scales in acute intracerebral hemorrhage: results from the INTERACT2 trial. Int J Stroke. 2015 Oct;10(7):1101-7. doi: 10.1111/ijs.12518. Epub 2015 Jun 4.
Wang X, Arima H, Al-Shahi Salman R, Woodward M, Heeley E, Stapf C, Lavados PM, Robinson T, Huang Y, Wang J, Delcourt C, Anderson CS. Rapid Blood Pressure Lowering According to Recovery at Different Time Intervals after Acute Intracerebral Hemorrhage: Pooled Analysis of the INTERACT Studies. Cerebrovasc Dis. 2015;39(3-4):242-8. doi: 10.1159/000381107. Epub 2015 Mar 25.
Wang X, Arima H, Heeley E, Delcourt C, Huang Y, Wang J, Stapf C, Robinson T, Woodward M, Chalmers J, Anderson CS; INTERACT2 Investigators. Magnitude of blood pressure reduction and clinical outcomes in acute intracerebral hemorrhage: intensive blood pressure reduction in acute cerebral hemorrhage trial study. Hypertension. 2015 May;65(5):1026-32. doi: 10.1161/HYPERTENSIONAHA.114.05044. Epub 2015 Mar 23.
Yang J, Arima H, Wu G, Heeley E, Delcourt C, Zhou J, Chen G, Wang X, Zhang S, Yu S, Chalmers J, Anderson CS; INTERACT Investigators. Prognostic significance of perihematomal edema in acute intracerebral hemorrhage: pooled analysis from the intensive blood pressure reduction in acute cerebral hemorrhage trial studies. Stroke. 2015 Apr;46(4):1009-13. doi: 10.1161/STROKEAHA.114.007154. Epub 2015 Feb 24.
Chan E, Anderson CS, Wang X, Arima H, Saxena A, Moullaali TJ, Heeley E, Delcourt C, Wu G, Wang J, Chen G, Lavados PM, Stapf C, Robinson T, Chalmers J, Huang Y; INTERACT2 Investigators. Significance of intraventricular hemorrhage in acute intracerebral hemorrhage: intensive blood pressure reduction in acute cerebral hemorrhage trial results. Stroke. 2015 Mar;46(3):653-8. doi: 10.1161/STROKEAHA.114.008470. Epub 2015 Feb 12.
Priglinger M, Arima H, Anderson C, Krause M; INTERACT Investigators. No relationship of lipid-lowering agents to hematoma growth: pooled analysis of the intensive blood pressure reduction in acute cerebral hemorrhage trials studies. Stroke. 2015 Mar;46(3):857-9. doi: 10.1161/STROKEAHA.114.007664. Epub 2015 Feb 5.
Sato S, Heeley E, Arima H, Delcourt C, Hirakawa Y, Pamidimukkala V, Li Z, Tao Q, Xu Y, Hennerici MG, Robinson T, Tzourio C, Lindley RI, Chalmers J, Anderson CS; INTERACT Investigators; Anderson CS, Huang Y, Wang JG, Arima H, Neal B, Peng B, Heeley E, Skulina C, Parsons MW, Kim JS, Tao QL, Li YC, Jiang JD, Tai LW, Zhang LJ, Xu E, Cheng Y, Heritier S, Morgenstern LB, Chalmers J. Higher mortality in patients with right hemispheric intracerebral haemorrhage: INTERACT1 and 2. J Neurol Neurosurg Psychiatry. 2015 Dec;86(12):1319-23. doi: 10.1136/jnnp-2014-309870. Epub 2015 Jan 14.
Wang X, Arima H, Al-Shahi Salman R, Woodward M, Heeley E, Stapf C, Lavados PM, Robinson T, Huang Y, Wang J, Delcourt C, Anderson CS; INTERACT Investigators. Clinical prediction algorithm (BRAIN) to determine risk of hematoma growth in acute intracerebral hemorrhage. Stroke. 2015 Feb;46(2):376-81. doi: 10.1161/STROKEAHA.114.006910. Epub 2014 Dec 11.
Radholm K, Arima H, Lindley RI, Wang J, Tzourio C, Robinson T, Heeley E, Anderson CS, Chalmers J; INTERACT2 Investigators. Older age is a strong predictor for poor outcome in intracerebral haemorrhage: the INTERACT2 study. Age Ageing. 2015 May;44(3):422-7. doi: 10.1093/ageing/afu198. Epub 2014 Dec 13.
Manning L, Hirakawa Y, Arima H, Wang X, Chalmers J, Wang J, Lindley R, Heeley E, Delcourt C, Neal B, Lavados P, Davis SM, Tzourio C, Huang Y, Stapf C, Woodward M, Rothwell PM, Robinson TG, Anderson CS; INTERACT2 investigators. Blood pressure variability and outcome after acute intracerebral haemorrhage: a post-hoc analysis of INTERACT2, a randomised controlled trial. Lancet Neurol. 2014 Apr;13(4):364-73. doi: 10.1016/S1474-4422(14)70018-3. Epub 2014 Feb 13.
Chen G, Arima H, Wu G, Heeley E, Delcourt C, Zhang P, Rabinstein AA, Robinson T, Stapf C, Huang Y, Song L, Yang J, Wang X, Li Q, Chen X, Chalmers J, Anderson C; INTERACT2 Investigators. Subarachnoid extension of intracerebral hemorrhage and 90-day outcomes in INTERACT2. Stroke. 2014 Jan;45(1):258-60. doi: 10.1161/STROKEAHA.113.003524. Epub 2013 Oct 22.
Anderson CS, Heeley E, Huang Y, Wang J, Stapf C, Delcourt C, Lindley R, Robinson T, Lavados P, Neal B, Hata J, Arima H, Parsons M, Li Y, Wang J, Heritier S, Li Q, Woodward M, Simes RJ, Davis SM, Chalmers J; INTERACT2 Investigators. Rapid blood-pressure lowering in patients with acute intracerebral hemorrhage. N Engl J Med. 2013 Jun 20;368(25):2355-65. doi: 10.1056/NEJMoa1214609. Epub 2013 May 29.
Delcourt C, Stapf C, Tzourio C, Heritier S, Anderson C. [The second (main) phase of an open, randomised, multicentre study to investigate the effectiveness of an INTEnsive blood pressure Reduction in Acute Cerebral hemorrhage Trial (INTERACT2): protocol and baseline characteristics of patients included in France]. Rev Neurol (Paris). 2012 Apr;168(4):321-7. doi: 10.1016/j.neurol.2011.08.010. Epub 2011 Nov 29. French.
Public notes

Contacts
Principal investigator
Name 0 0
Craig Anderson, PhD
Address 0 0
The George Institute
Country 0 0
Phone 0 0
Fax 0 0
Email 0 0
Contact person for public queries
Name 0 0
Address 0 0
Country 0 0
Phone 0 0
Fax 0 0
Email 0 0
Contact person for scientific queries



Summary Results

For IPD and results data, please see https://clinicaltrials.gov/study/NCT00716079