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A First-in-Human Phase 1 Single-Ascending Dose Study of ABCL575 in Healthy Participants

A First-in-Human Phase 1 Single-Ascending Dose Study of ABCL575 in Healthy Participants

Status
Recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07108894
Enrollment
40
Registered
2025-08-07
Start date
2025-07-25
Completion date
2027-04-01
Last updated
2026-03-23

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Healthy Volunteers

Brief summary

This study aims to assess the safety and tolerability of ABCL575 in healthy participants following single ascending dose (SAD), in comparison to a placebo

Detailed description

This is a phase I randomized, double-blind, placebo-controlled, single ascending dose (SAD) study. The study will consist of 5 planned cohorts (A1 to A5), each comprised of 8 healthy participants. Doses of ABCL575 are intended to escalate through cohorts A1 to A5.

Interventions

BIOLOGICALABCL575

Participants will receive SC injection of ABCL575

Participants will receive SC injection of placebo (Normal Saline 0.9%)

Sponsors

AbCellera Biologics Inc.
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Caregiver, Investigator)

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
Yes

Inclusion criteria

* Healthy male or female ≥ 18 and ≤ 65 years of age at the time of screening * Good general health as determined through medical history and general physical examination * Body weight ≥ 50 and ≤ 100 Kg * Body mass index (BMI) between 18.5 kg/m2 and 30.0 kg/m2 * Non- or ex-smoker (an ex-smoker defined as someone who has completely stopped using nicotine products for at least 180 days prior to study drug administration) * Meeting 1 of the following: 1. Is of childbearing potential or able to procreate and agrees to use an acceptable contraceptive method from the time of signing the ICF through the EOS visit. 2. Is of nonchildbearing potential or unable to procreate * If male, agrees not to donate sperm from the study drug administration through EOS visit; If female, agrees not to donate or retrieve eggs from the study drug administration through EOS visit

Exclusion criteria

* Pregnancy and/or lactation. * Seated pulse rate less than 50 beats per minute (bpm) or more than 100 bpm or a seated blood pressure \< 90/50 mmHg or \> 140/90 mmHg * eGFR \< 60 mL/min/1.73 m2 * Severe hypersensitivity reactions (like angioedema) to any drugs. * Presence or history of significant gastrointestinal, liver disease, kidney disease, or surgery that may affect drug bioavailability. * History of significant cardiovascular, pulmonary, hematologic, neurological, psychiatric, endocrine, immunologic, or dermatologic disease. * History or presence of multiple or severe drug allergies. * Evidence of any active bacterial, viral, or fungal infection * Disrupted skin integrity (apparent burn or dermatitis). * History of syncope, palpitations, or unexplained dizziness. * Use of prescription drugs (except for hormonal contraceptives or hormone replacement therapy) in the 28 days prior to study drug administration, that in the opinion of an investigator would put into question the participant's healthy status. * Use of any over-the-counter products in the 7 days or 5 half-lives (whichever is longer) prior to study drug administration. * Receipt of live vaccines within 5 weeks prior to screening or plans to receive live vaccines within 180 days after study drug administration. * History of latent or active tuberculosis. * History of herpes zoster (shingles) or RZV (eg, Shingrix) vaccination within 28 days prior to screening or scheduled during the study period

Design outcomes

Primary

MeasureTime frame
Incidence, frequency, and severity of adverse events (AEs)Day 0 to day 337
Changes from baseline in laboratory parameters including general biochemistry, lipid profile, coagulation, hematology, and urinalysisDay 0 to day 337
Changes from baseline in physical examinationDay 0 to day 337
Changes from baseline in vital signsDay 0 to day 337
Changes from baseline in 12-lead safety ECGsDay 0 to day 337
Incidence and severity of injection site reactionsDay 0 to day 337

Secondary

MeasureTime frame
Plasma concentrations of ABCL575Day 0 to day 337
Incidence of anti-ABCL575 antibodiesDay 0 to day 337
PK parameters; maximum plasma concentration (Cmax)Day 0 to day 337
PK parameters; time to maximum plasma concentration (Tmax)Day 0 to day 337
PK parameters; area under the plasma concentration-time curve from zero to the time of the last quantifiable concentration (AUC0-T)Day 0 to day 337
PK parameters; area under the plasma concentration-time curve from zero to hour 672 (AUC0-672)Day 0 to day 337
PK parameters; area under the plasma concentration-time curve from zero to infinity (AUC0-∞)Day 0 to day 337
PK parameters; terminal rate constant (λz)Day 0 to day 337
PK parameters; apparent plasma clearance of drug after extravascular administration (CL/F)Day 0 to day 337
PK parameters; apparent volume of distribution after extravascular administration (Vz/F)Day 0 to day 337
PK parameters; half-life (Thalf)Day 0 to day 337

Countries

Canada

Contacts

CONTACTClinical Trial Coordinator
clinicaltrials@abcellera.com1-877-933-9037
PRINCIPAL_INVESTIGATOREric Sicard

Altasciences Company Inc.

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 24, 2026