UCLA Clinical and Translational Research Center
Los Angeles, California, 90095, United States
NCT Number: NCT07762001
This is a Phase 1 single-blind, placebo-controlled, dose-escalation study designed to evaluate the safety of AD-NP1, a humanized monoclonal antibody targeting human ectonucleotide pyrophosphatase/phosphodiesterase-1 (ENPP1). The study aims to assess the maximum tolerated dose (MTD), pharmacokinetics (PK), pharmacodynamics (PD), and immunogenicity of AD-NP1 in healthy volunteers. Participants will be randomized to receive either AD-NP1 or placebo, with safety and efficacy monitored in accordance with Good Clinical Practice (GCP) guidelines. The study also seeks to explore changes in health-related quality of life (HRQOL) during the trial.
This study is active but is not currently recruiting participants.
Notify Me21 year–65 year
All sexes
Interventional
Phase 1
Los Angeles, California, 90095, United States
Healthy volunteers accepted: Yes
Only the study team can determine whether someone qualifies for participation.
Inclusion criteria
Exclusion criteria
AD-NP1 is a humanized monoclonal antibody targeting the catalytic domain of human ENPP1. It is administered intravenously at escalating doses (30 mg/kg, 40 mg/kg, 60 mg/kg, and 100 mg/kg).
Placebo is a normal saline solution administered intravenously in volumes matched to the corresponding AD-NP1 doses (30 mg/kg, 40 mg/kg, 60 mg/kg, and 100 mg/kg)
Time frame: Day of infusion (Day 0) to 28 days post-dose
Assessed by the incidence of treatment-related Adverse Events (AEs) using the Common Terminology Criteria for Adverse Events (CTCAE) v5.0.
Time frame: Day of infusion (Day 0) to 28 days post-dose
To be determined based on dose limiting toxicities (DLTs) and adverse events
Time frame: Baseline (pre-dose) up to Day 60 post-dose
Peak plasma concentration obtained directly from the experimental data points, to be measured in Nanograms per milliliter (ng/mL)
Time frame: Baseline (pre-dose) up to Day 60 post-dose
Tmax presents the time at which Cmax is observed, to be measured in hours (h) and minutes (m)
Time frame: Baseline (pre-dose) up to Day 60 post-dose
Volume of distribution calculated during the terminal elimination phase following administration, to be measured in Liters (L) or Liters per kilogram (L/kg)
Time frame: Baseline (Pre-dose), 30 minutes, 1, 2, 4, 6 hours, and Days 1, 3, 7, 14, 28, 60 post-dose.
AUC calculated using the linear-log trapezoidal rule from time zero (pre-dose) to the last quantifiable concentration point to be measured in Nanogram x hours per milliliter (ng * h/mL)
Time frame: Baseline (pre-dose) up to Day 60 post-dose
The rate at which Ad-NP1 is cleared from the systemic plasma circulation, to be measured in Liters per hour (L/h) or Milliliters per minute per kilogram (mL/min/kg)
Time frame: Baseline (pre-dose) up to Day 60 post-dose
The rate at which AD-NP1 is cleared from the systemic plasma circulation, to be measured in Liters per hour (L/h) or Milliliters per minute per kilogram (mL/min/kg)
Time frame: Baseline (pre-dose), and Days 1, 3, 7, 14, and 28 post-dose.
Plasma concentrations of uridine will be quantified using Liquid Chromatography-Mass Spectrometry (LC/MS).
Time frame: Baseline (pre-dose), and Days 1, 3, 7, 14, and 28 post-dose.
Plasma concentrations of cytidine will be quantified using Liquid Chromatography-Mass Spectrometry (LC/MS)
Time frame: Baseline (pre-dose), and Days 1, 3, 7, 14, and 28 post-dose.
Plasma concentrations of orotidine will be quantified using Liquid Chromatography-Mass Spectrometry (LC/MS)
Time frame: Baseline (pre-dose), and Days 1, 3, 7, 14, and 28 post-dose.
Plasma concentrations of adenine will be quantified using Liquid Chromatography-Mass Spectrometry (LC/MS)
Time frame: Baseline (pre-dose), and Days 1, 3, 7, 14, and 28 post-dose.
Plasma concentrations of carbamoyl aspartate will be quantified using Liquid Chromatography-Mass Spectrometry (LC/MS).
Time frame: Baseline (pre-dose) and Days 1, 7, 14, 28, 90, and 180 post-dose
Determined by measuring levels of circulating anti-drug antibody in blood samples
Arjun Deb, MD
Other
A Phase 1 Single-blind, Placebo-controlled, Dose Escalation Study to Evaluate the Safety of AD-NP1, a Humanized Monoclonal Antibody Targeting Human ENPP1
OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.
View the official ClinicalTrials.gov record (opens in a new tab)This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.
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