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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT04734548
Other study ID # APRIL
Secondary ID
Status Completed
Phase Phase 1/Phase 2
First received
Last updated
Start date October 28, 2020
Est. completion date September 7, 2022

Study information

Verified date October 2022
Source aptaTargets S.L.
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

This is a prospective, multicenter, double-blind, randomized, placebo-controlled, Phase Ib/IIa clinical study to assess the administration of ApTOLL together with endovascular therapy in acute ischemic stroke patients who are candidates to receive reperfusion therapies.


Description:

This is a prospective, multicenter, double-blind, randomized, placebo-controlled, Phase Ib/IIa clinical study to assess the administration of ApTOLL together with endovascular therapy in acute ischemic stroke (AIS) patients with confirmed Large Vessel Occlusion (LVO) who are candidates to receive reperfusion therapies including endovascular treatment with or without i.v. rt-PA (recombinant tissue Plasminogen Activator). The study will be a Phase Ib/IIa trial where 2 doses selected, based on safety criteria, on Phase Ib will be administered in the following Phase IIa.The objective of the study is to evaluate if administration of ApTOLL at different doses is safe and well tolerated compared to placebo when administered with endovascular therapy (EVT), with or without i.v. rt-PA, in the AIS target population.


Recruitment information / eligibility

Status Completed
Enrollment 151
Est. completion date September 7, 2022
Est. primary completion date July 25, 2022
Accepts healthy volunteers No
Gender All
Age group 18 Years to 90 Years
Eligibility Inclusion Criteria: 1. Age =18 and =90 years. 2. Informed consent obtained from subject or acceptable subject surrogate (i.e. next of kin, or legal representative). 3. A new focal disabling neurologic deficit consistent with acute cerebral ischemia. 4. Baseline NIHSS obtained prior to randomization = 8 points and = 25 points. 5. Pre-stroke mRS score of 0 - 2. 6. Treatable as soon as possible and at least within 6 hours of symptom onset, defined as point in time when the subject was last seen well (at baseline). 7. Patients should be candidates to receive EVT treatment with or without i.v. rt-PA. 8. Occlusion (TICI 0 or TICI 1 flow), of the terminal internal carotid artery (TICA), M1 or M2 segments of the middle cerebral artery, suitable for mechanical embolectomy, confirmed on Computed Tomography Angiography. 9. The following imaging criteria should also be met on admission neuroimaging: 1. MRI criterion: volume of DWI (Diffusion-weighted Imaging) restriction =5 mL and =70 mL OR 2. CT criterion: Alberta Stroke program early CT score (ASPECTS) 6 to 10 on baseline CT AND infarct core determined on admission CTPerfusion by Cerebral Blood Flow<30%: =5 mL and =70 mL. 10. The subject has an indication and is planned to receive endovascular treatment of stroke according to the European Stroke Organization Guidelines. Exclusion Criteria: 1. Subject has suffered a stroke in the past 1 year. 2. Occlusion (TICI 0 or TICI 1 flow) of the basilar or vertebral or posterior or anterior cerebral arteries. 3. Clinical symptoms suggestive of bilateral stroke or stroke in multiple territories. 4. Known hemorrhagic diathesis, coagulation factor deficiency, or oral anticoagulant therapy with INR (international normalized ratio)>3.0. 5. Baseline platelet count <50,000/µL. 6. Baseline blood glucose of <50 mg/dL or >400 mg/dL. 7. Severe, sustained hypertension (systolic blood pressure >185 mmHg or diastolic blood pressure >110 mmHg). 8. Serious, advanced, or terminal illness with anticipated life expectancy of less than 1 year. 9. Subjects with identifiable intracranial tumors. 10. History of life-threatening allergy (more than rash) to contrast medium. 11. Known renal insufficiency with creatinine =3 mg/dL or Glomerular Filtration Rate (GFR) <30 mL/min. 12. Cerebral vasculitis. 13. Evidence of active systemic infection. 14. Known current use of cocaine at time of treatment. 15. Patient participating in a study involving an investigational drug or device that would impact this study. 16. Patients that are unlikely to be available for a 90-day follow-up (e.g. no fixed home address, visitor from overseas). 17. Female who is pregnant or lactating or has a positive pregnancy test at time of admission. 18. CT or MRI evidence of hemorrhage (the presence of microbleeds is allowed). 19. Significant mass effect with midline shift. 20. Suspicion of aortic dissection presumed septic embolus, or suspicion of bacterial endocarditis.

Study Design


Intervention

Drug:
ApTOLL
ApTOLL is a Toll-like receptor 4 (TLR4) antagonist, a receptor that is involved in innate immune responses but also responds to tissue damage, and therefore it is directly involved in a large number of diseases where the inflammatory response is involved. ApTOLL has demonstrated specific binding to human TLR4 as well as a TLR4 antagonistic effect, reducing inflammation and improving outcome after different disease models.
Other:
Placebo
White freeze-dried powder which is indistinguishable to ApTOLL for taste, color, texture and size.

Locations

Country Name City State
France Centre Hospitalier Régional Universitaire de Lille Lille
France Foundation Adolphe de Rothschild Paris
France Centre Hospitalier Universitaire de Toulouse Toulouse
Germany Universitätsklinikum Essen Essen
Spain Hospital Universitario Central de Asturias Asturias
Spain Hospital Bellvitge Barcelona
Spain Hospital Germans Trias i Pujol Barcelona
Spain Hospital Universitario Vall d´Hebron Barcelona
Spain Hospital Universitario A Coruña Coruña
Spain Hospital Universitario de Gerona Dr. Josep Trueta Gerona
Spain Hospital Universitario 12 de Octubre Madrid
Spain Hospital Universitario La Princesa Madrid
Spain Hospital Universitario Ramón y Cajal Madrid
Spain Hospital Virgen del Rocío Sevilla
Spain Hospital Universitario y Politécnico La Fe Valencia
Spain Hospital Clínico Valladolid Valladolid

Sponsors (3)

Lead Sponsor Collaborator
aptaTargets S.L. Anagram, Science and Innovation Spanish Ministry

Countries where clinical trial is conducted

France,  Germany,  Spain, 

References & Publications (1)

Hernández-Jiménez M, Martín-Vílchez S, Ochoa D, Mejía-Abril G, Román M, Camargo-Mamani P, Luquero-Bueno S, Jilma B, Moro MA, Fernández G, Piñeiro D, Ribó M, González VM, Lizasoain I, Abad-Santos F. First-in-human phase I clinical trial of a TLR4-binding DNA aptamer, ApTOLL: Safety and pharmacokinetics in healthy volunteers. Mol Ther Nucleic Acids. 2022 Mar 9;28:124-135. doi: 10.1016/j.omtn.2022.03.005. eCollection 2022 Jun 14. — View Citation

Outcome

Type Measure Description Time frame Safety issue
Primary Safety of ApTOLL To assess if ApTOLL is safe when combined with EVT therapy as determined by:
Death.
Adverse events that occur during the study.
Physical examination.
Laboratory tests.
Recurrent stroke.
Symptomatic intracranial hemorrhage (sICH).
From dosing to follow-up (day 90 after dosing)
Secondary Mean infarct volume Magnetic Resonance Image 72 hours
Secondary Effect in inflammatory response Proinflammatory markers in blood between study groups Predose and up to 72 hours post-dose
Secondary Early clinical course NIHSS (National institute of Health Stroke Scale). The maximum possible score is 42, with the minimum score being a 0 (the higher the score, the more impaired a stroke patient is) 72 hours post-dose
Secondary Long-term outcome mRS (modified Ranking Score). Coded from 0 (no symptoms at all) through 5 (severe disability) 6 (death). Day 90 post-dose
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