First in Human Clinical Trial of ApTOLL in Healthy Volunteers

First in Human Dose Ascending, Randomized, Placebo-Controlled Clinical Trial to Assess Tolerability and Pharmacokinetics of ApTOLL in Healthy Volunteers

This is a Phase I, first-in-human, dose ascending, randomized, placebo-controlled clinical study to assess the tolerability and pharmacokinetics of ApTOLL in healthy volunteers. ApTOLL is an aptamer able to antagonize TLR4 receptor and, therefore, to reduce the inflammatory response.

Study Overview

• Status: Completed
• Conditions: Stroke
• Intervention / Treatment: Drug: ApTOLL; Other: Placebo

Detailed Description

This Phase I clinical trial is divided in two parts: the first part (part A) is a single dose escalation study and the second (part B) is a multiple dose study. Both are performed in healthy volunteers.

• First part: a single dose, i.v. administration (slow infusion), dose escalation with a maximum of 7 single dose levels, randomized, double-blind, placebo-controlled (saline solution), in healthy subjects.
• Second part: a multiple dose, i.v. administration (slow infusion), randomized, double-blind, placebo-controlled (saline solution), in healthy subjects.

The main objectives of this study are:

1. To evaluate the tolerability and pharmacokinetic characteristics of ApTOLL in healthy volunteers, after single dose administration in fasting conditions, following an ascending dosing scheme.
2. To evaluate the tolerability and pharmacokinetic characteristics of ApTOLL in healthy volunteers, after multiple dose administration in fasting conditions.

• Study Type: Interventional
• Enrollment (Actual): 46
• Phase: Phase 1

Contacts and Locations

Study Locations

• Spain
  • Madrid, Spain, 28006
    • Clinical Pharmacology Department. Hospital Universitario de La Princesa

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 14 years to 51 years (Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

1. Male or female subjects (women without possibility of becoming pregnant) willing and able to give their written consent to participate in the trial.
2. Healthy subjects aged within: 18 to 55 years (limits included).
3. Clinical history and physical examination results within normality.
4. Vital signs and electrocardiogram without clinically significant pathologic abnormalities and with QTc (Corrected QT space) values lower than 450 ms.
5. Body weight between 65 and 85 kg, inclusive.
6. BMI (Body Mass Index) between 19.0 and 30.0 kg/m2.
7. No clinically significant abnormalities in haematology, biochemistry, serology (Ag HBV (Hepatitis B Virus), HCV (Hepatitis C Virus) antibodies, HIV (Human Immunodeficiency Virus) antibodies) and urine tests.

Exclusion Criteria:

1. Any chronic medical condition (such as type 1 diabetes) requiring chronic treatment.
2. Evidence of active infection requiring antibiotic therapy within 14 days prior to screening.
3. Medical history of vasculitis or any autoimmune disease excluding seasonal allergic rhinitis and childhood history of atopic dermatitis.
4. Subject having at screening examination a sitting blood pressure more than or equal to 140/90 mm Hg or lower than or equal to 90/50 mmHg.
5. Subject having at screening examination a pulse more than 100 beats per minute or a body temperature more than 37.7 °C. or a respiratory rate outside the normal range of (14-20 breath per minute).
6. History of any treatment for cancer within the past 2 years, other than basal cell or squamous cell carcinoma of the skin.
7. Clinically significant abnormalities in screening laboratory tests.
8. Any prescription, over-the-counter and herbal medications within 10 days prior to study dosing.
9. Use of an investigational drug within 3 months prior to dosing in this study.
10. Psychiatric history of current or past psychosis, bipolar disorder, clinical depression, or anxiety disorder requiring chronic medication within the past 5 years.
11. Pregnant or breastfeeding women.
12. History of substance abuse, including alcohol.
13. Smokers.
14. History of substance or drug dependence, or positive urine drug screen at screening visit.
15. History of head injury.
16. History of sensitivity to any drug.
17. Having donated blood in the last month before start of the study.
18. Any reason or opinion of the investigator that would prevent the subject from participation in the study.
19. Inability to follow the instructions or an unwillingness to collaborate during the study.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Sequential Assignment
• Masking: Triple

Number of Arms

4

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Active Comparator: ApTOLL single dose; ApTOLL is administered intravenously in a single ascending dose pattern in seven dose levels (0.7mg - 70mg). Levels 1 - 3 include one subject per level and levels 4 - 7 include six subjects per level (1 sentinel + 5 subjects).	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 inflammatoryy 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.
Placebo Comparator: Placebo single dose; Placebo is administered intravenously during seven dose levels. Levels 1 - 3 include one subject per level and levels 4 - 7 include two subjects per level (1 sentinel + 1 subject).	Other: Placebo; 100 mL 0.9% Sodium Chloride solution
Active Comparator: ApTOLL multiple dose; ApTOLL is administered intravenously every eight hours during 24h (21mg). This arm includes six subjects (1 sentinel + 5 subjects).	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 inflammatoryy 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.
Placebo Comparator: Placebo multiple dose; Placebo is administered intravenously every eight hours during 24h. This arm includes twosubjects (1 sentinel + 1 subject).	Other: Placebo; 100 mL 0.9% Sodium Chloride solution

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Incidence of Adverse Events as assessed by CTCAE v4.0	Adverse Events that occur during the study	From dosing to follow-up (day 15 after dosing)
Peak Plasma Concentration	Peak Plasma Concentration (Cmax)	Predose and at different times up to 72 hours post-dose
Area under the plasma concentration	Area under the plasma concentration versus time curve (AUC)	Predose and at different times up to 72 hours post-dose

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Vital signs	Heart Rate	From screening to follow-up (day 15 after dosing)
Vital signs	Blood Presure	From screening to follow-up (day 15 after dosing)
Vital signs	Respiratory Rate	From screening to follow-up (day 15 after dosing)
Vital signs	Body Temperature	From screening to follow-up (day 15 after dosing)
Laboratory determinations	Number of patients with treatment-related alterations coagulation parameters (Protrombine Time (PT) and activated Partial Tromboplastine Time (aPTT))	From screening to follow-up (day 15 after dosing)
Laboratory determinations	Number of patients with treatment-related alterations Complement Factors activation determined in blood	From screening to follow-up (day 15 after dosing)

Collaborators and Investigators

• Sponsor: aptaTargets S.L.
• Collaborators: Science and Innovation Spanish Ministry; Anagram
• Investigators: Study Director: Macarena Hernández, PhD, aptaTargets S.L.; Principal Investigator: Dolores Ochoa, MD, PhD, Clinical Trials Unit. Hospital Universitario La Princesa

Publications and helpful links

General Publications

• Duran-Laforet V, Pena-Martinez C, Garcia-Culebras A, Alzamora L, Moro MA, Lizasoain I. Pathophysiological and pharmacological relevance of TLR4 in peripheral immune cells after stroke. Pharmacol Ther. 2021 Dec;228:107933. doi: 10.1016/j.pharmthera.2021.107933. Epub 2021 Jun 24.

Helpful Links

• Biotechnology company specialized in therapeutic aptamers

Study record dates

Study Major Dates

• Study Start (Actual): July 18, 2019
• Primary Completion (Actual): February 27, 2020
• Study Completion (Actual): March 20, 2020

Study Registration Dates

• First Submitted: January 26, 2021
• First Submitted That Met QC Criteria: February 4, 2021
• First Posted (Actual): February 5, 2021

Study Record Updates

• Last Update Posted (Actual): March 17, 2022
• Last Update Submitted That Met QC Criteria: March 16, 2022
• Last Verified: January 1, 2021

More Information

Terms related to this study

• Keywords: Healthy volunteers; ApTOLL
• Other Study ID Numbers: ApTOLL-FIH-01

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: No
• IPD Plan Description: All the data from this study are going to be published.

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No