NCT07081503

Brief Summary

This first-in-human study will evaluate the safety and tolerability of ADX-626 in healthy participants. The study will also look at how ADX-626 interacts with the human body (the pharmacokinetics and pharmacodynamics of ADX-626).

Trial Health

77
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
44

participants targeted

Target at P50-P75 for phase_1

Timeline
8mo left

Started Aug 2025

Geographic Reach
1 country

1 active site

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress58%
Aug 2025Jan 2027

First Submitted

Initial submission to the registry

July 3, 2025

Completed
20 days until next milestone

First Posted

Study publicly available on registry

July 23, 2025

Completed
20 days until next milestone

Study Start

First participant enrolled

August 12, 2025

Completed
1.4 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

January 22, 2027

Expected
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

January 22, 2027

Last Updated

March 2, 2026

Status Verified

January 1, 2026

Enrollment Period

1.4 years

First QC Date

July 3, 2025

Last Update Submit

February 27, 2026

Conditions

Outcome Measures

Primary Outcomes (1)

  • Safety of ADX-626 in Healthy Participants

    Incidence, relationship and severity of adverse events and serious adverse events

    Day 1 to Day 365

Secondary Outcomes (5)

  • Pharmacokinetics (PK) of ADX-626 - Maximum Concentration

    Day 1 to Day 29

  • Pharmacokinetics (PK) of ADX-626 - Time to Maximum Concentration

    Day 1 to Day 29

  • Pharmacokinetics (PK) of ADX-626 - Exposure

    Day 1 to Day 29

  • Pharmacodynamics (PD) of ADX-626 - Factor XI

    Day 1 to Day 365

  • Pharmacodynamics (PD) of ADX-626 - Blood Clotting Time

    Day 1 to Day 365

Study Arms (2)

ADX-626

EXPERIMENTAL
Drug: ADX-626

Placebo

PLACEBO COMPARATOR
Drug: Placebo

Interventions

siRNA duplex oligonucleotide

ADX-626

Saline

Placebo

Eligibility Criteria

Age18 Years - 45 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • Age 18 to 45 years at the time of informed consent
  • Males or women of non-childbearing potential (WONCBP)
  • Willing to comply with all study requirements while participating
  • Suitable venous access for blood sampling.
  • Body weight ≥ 50 kg and a body mass index (BMI) ≤25 kg/m2
  • Normal laboratory results including liver enzymes, hemoglobin, platelet count, and coagulation parameters
  • Willing to use acceptable contraception methods if applicable

You may not qualify if:

  • Significant medical condition such as hypertension, diabetes, cardiovascular disease, or cancer
  • History of bleeding or coagulation disorders, prior instances of major bleeding, or a family history of bleeding disorders.
  • Current infection
  • Participation in an interventional drug study within the last 90 days

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Richmond Pharmacology

London, SE1 1YR, United Kingdom

RECRUITING

Study Officials

  • Aditya Patel, MD

    ADARx Pharmaceuticals

    STUDY DIRECTOR

Central Study Contacts

Study Design

Study Type
interventional
Phase
phase 1
Allocation
RANDOMIZED
Masking
DOUBLE
Who Masked
PARTICIPANT, INVESTIGATOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
INDUSTRY
Responsible Party
SPONSOR

Study Record Dates

First Submitted

July 3, 2025

First Posted

July 23, 2025

Study Start

August 12, 2025

Primary Completion (Estimated)

January 22, 2027

Study Completion (Estimated)

January 22, 2027

Last Updated

March 2, 2026

Record last verified: 2026-01

Locations