Study of Single Oral Doses of HOPO 14-1 Evaluating Safety, Tolerability, Pharmacokinetics

NCT ID: NCT05628961

Last Updated: 2025-11-14

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: PHASE1
• Total Enrollment: 42 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2023-03-15
• Study Completion Date: 2025-08-04

Brief Summary

The study objectives are to define the safety and tolerability profile of oral, single ascending dose (SAD) levels of HOPO 14-1 capsules in cohorts of healthy participants and to assess the pharmacokinetic (PK) and excretion profile of HOPO 14-1. The study hypothesis is that a single dose of HOPO 14-1 will be safe and tolerable up to 7500 mg.

Detailed Description

The currently available therapy for radionuclide internal contamination is suboptimal. Pharmacological and toxicological data support the clinical development of HOPO 14-1 for decorporation of radionuclides.

Conditions

Toxicity;Chemical

Keywords

Internal Radionuclide Contamination

Study Design

• Allocation Method: NON_RANDOMIZED
• Intervention Model: SEQUENTIAL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: NONE

Study Groups

Cohort 1: 100 mg

Participants receive an oral single dose of HOPO 14-1 in the fasted condition on Day 1.

Group Type: EXPERIMENTAL

HOPO 14-1

Intervention Type: DRUG

HOPO 14-1 contains the active pharmaceutical ingredient (API) 3, 4, 3-LI(1, 2-HOPO) formulated with a permeability enhancer, sodium oleate, in capsule form.

Cohort 2: 200 mg

Participants receive an oral single dose of HOPO 14-1 in the fasted condition on Day 1.

Group Type: EXPERIMENTAL

HOPO 14-1

Intervention Type: DRUG

HOPO 14-1 contains the active pharmaceutical ingredient (API) 3, 4, 3-LI(1, 2-HOPO) formulated with a permeability enhancer, sodium oleate, in capsule form.

Cohort 3: 500 mg

Participants receive an oral single dose of HOPO 14-1 in the fasted condition on Day 1.

Group Type: EXPERIMENTAL

HOPO 14-1

Intervention Type: DRUG

HOPO 14-1 contains the active pharmaceutical ingredient (API) 3, 4, 3-LI(1, 2-HOPO) formulated with a permeability enhancer, sodium oleate, in capsule form.

Cohort 4: 1200 mg

Participants receive an oral single dose of HOPO 14-1 in the fasted condition on Day 1.

Group Type: EXPERIMENTAL

HOPO 14-1

Intervention Type: DRUG

HOPO 14-1 contains the active pharmaceutical ingredient (API) 3, 4, 3-LI(1, 2-HOPO) formulated with a permeability enhancer, sodium oleate, in capsule form.

Cohort 5: 2500 mg

Participants receive an oral single dose of HOPO 14-1 in the fasted condition on Day 1.

Group Type: EXPERIMENTAL

HOPO 14-1

Intervention Type: DRUG

HOPO 14-1 contains the active pharmaceutical ingredient (API) 3, 4, 3-LI(1, 2-HOPO) formulated with a permeability enhancer, sodium oleate, in capsule form.

Cohort 6: 5000 mg

Participants receive an oral single dose of HOPO 14-1 in the fasted condition on Day 1.

Group Type: EXPERIMENTAL

HOPO 14-1

Intervention Type: DRUG

HOPO 14-1 contains the active pharmaceutical ingredient (API) 3, 4, 3-LI(1, 2-HOPO) formulated with a permeability enhancer, sodium oleate, in capsule form.

Cohort 7: 7500 mg

Participants receive an oral single dose of HOPO 14-1 in the fasted condition on Day 1.

Group Type: EXPERIMENTAL

HOPO 14-1

Intervention Type: DRUG

HOPO 14-1 contains the active pharmaceutical ingredient (API) 3, 4, 3-LI(1, 2-HOPO) formulated with a permeability enhancer, sodium oleate, in capsule form.

Interventions

HOPO 14-1

HOPO 14-1 contains the active pharmaceutical ingredient (API) 3, 4, 3-LI(1, 2-HOPO) formulated with a permeability enhancer, sodium oleate, in capsule form.

Intervention Type: DRUG

Eligibility Criteria

Inclusion Criteria

• Ability of participant to understand the requirements of the study, provide written informed consent, and agree to abide by the study requirements
• Agree to use contraception from time of screening until 14 days after dosing (Day 14) if female is of childbearing potential or male is with female partner of childbearing potential.
• In good general health based on medical history, physical examination (PE), and screening evaluations.
• Negative urine screen for drugs of abuse (except if participant provides prescription justifying use prior to urine screen).
• Body weight ≥ 50 kilogram (kg) and ≤ 110 kg. If body weight is over 110 kg, then body mass index (BMI) will be considered and must be ≤ 40 kg/m^2.

Exclusion Criteria

• Inability or unwillingness of a participant to give written informed consent or comply with study protocol.
• Any hematology, chemistry, coagulation, or urinalysis value on screening labs defined in the United States Food and Drug Administration (FDA) Guidance for Industry Toxicity Grading Scale as Grade 1 or higher.
• Any clinically significant electrocardiogram (ECG) abnormality
• Pregnant or breastfeeding
• Active substance abuse or history of any medical or psychiatric condition that would jeopardize the participant's safety or the participant's ability to comply with the protocol.
• Received an organ transplant (solid or bone marrow).
• Received a blood transfusion within 3 months of dosing.
• Difficulty swallowing tablets or capsules.
• Febrile illness or significant infection within 7 days of dosing.
• Symptoms of hypotension (lightheadedness, syncope, balance disturbances, or extreme fatigue) within 48 hours of dosing.
• Hepatitis B virus surface antigen (HBsAg) positive or serologic (antibody positive) evidence of infection with hepatitis C virus (HCV) or human immunodeficiency virus (HIV).
• Tested positive for SARS-CoV-2 (COVID-19) within 21 days of dosing.
• Chelation therapy (e.g., ethylenediaminetetraacetic acid [EDTA], diethylenetriamine pentaacetate [DTPA]) in the past year.
• Use of laxatives, antibiotics, and/or antacids within 7 days of dosing.
• Use of investigational drugs within 60 days of dosing or 5 half-lives, whichever is longer.
• Received a vaccination within 30 days of dosing.
• Potential allergic reaction to product (oleic acid or HOPO 14-1 product).
• Past or current medical problems or findings from physical examination (PE) or laboratory testing

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 65 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

SRI International

INDUSTRY

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Locations

SRI International Clinical Trials Unit

Plymouth, Michigan, United States

Countries

United States

Other Identifiers

SRI-HOPO-01

Identifier Type: -

Identifier Source: org_study_id