1a/1b Study of OPT101 First in Human Study Assessing Safety and Tolerability of 15-mer Peptide.

NCT ID: NCT04589403

Last Updated: 2025-09-15

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: PHASE1
• Total Enrollment: 14 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2021-02-18
• Study Completion Date: 2021-09-27

Brief Summary

This is a first-in-human study, Phase 1, randomized, placebo-controlled, double blinded study that will be conducted in 2 parts.

Detailed Description

2 part study description:

• an initial Phase 1a single ascending dose (SAD) phase to identify a safe dose of OPT101.

Dose escalation will be by a factor of 2.6: 0.16, 0.42, 1.1, 2.8 and 7.3mg/kg.

• a Phase 1b multiple ascending dose (MAD) phase to measure safety and clinical effects of the highest and next to highest dose of OPT101 that are found to be safe in Phase 1a.

Conditions

Healthy

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: OTHER
• Blinding Strategy: TRIPLE

Study Groups

0.9% Sodium Chloride Injection USP

Placebo will be 50 mL normal saline (Sodium Chloride), USP sterile solution administered by IV infusion over 30 minutes.

Group Type: PLACEBO_COMPARATOR

OPT101

Intervention Type: DRUG

15-mer peptide with sequence based on the mouse CD154 domain interacting with CD40

OPT101

The starting dose for the Phase 1a study is 0.16 mg/kg, which is 35-fold lower than the dog NOAEL (10mg/kg), on a mg/m2 basis. The dosing frequency for the MAD study was selected based on dosing performed in the supporting animal model studies. For an additional safety factor, the dose and volume infusion rates for the 0.16 mg/kg dose in humans will be 67-fold and 14-fold lower than the dogs dosed at 10mg/kg/min and mL/kg/min basis, respectively. For both Phase 1a and 1b, OPT101 will be administered by a slow IV infusion over 30 minutes.

Group Type: EXPERIMENTAL

OPT101

Intervention Type: DRUG

15-mer peptide with sequence based on the mouse CD154 domain interacting with CD40

Interventions

OPT101

15-mer peptide with sequence based on the mouse CD154 domain interacting with CD40

Intervention Type: DRUG

Other Intervention Names

15-mer peptide

Eligibility Criteria

Inclusion Criteria

• Able and willing to give informed consent for the trial
• Male or female aged ≥18 years on the day of signing informed consent
• Is medically stable based on physical examination, medical history, laboratory results, and vital signs performed at screening
• Women of childbearing potential must have a negative highly sensitive serum test (beta-human chorionic gonadotropin) at screening and a negative urine pregnancy test at the Visit 1 Day 1 prior to receiving the investigational product.
• Women must agree to use one of the following methods of birth control for the duration of the clinical trial: systemic hormonal contraceptive (oral, injected, transdermal), intrauterine device, double barrier (e.g., cervical cap or diaphragm with condom or spermicide). Men with female partners must agree to use double barrier contraception, unless their partner is using systemic hormonal contraceptives or has an intrauterine device.

Exclusion:

• Is over the age of 55 years old
• Positive COVID test at screening/baseline
• Has an active fever or has recently been exposed to a COVID-19 patient.
• Currently has or had a history of malignancy
• Has an immune deficiency syndrome (for example, severe combined immunodeficiency syndrome, T-cell deficiency syndromes, B-cell deficiency syndromes, or chronic granulomatous disease), or bone marrow or organ transplantation, or a disease associated with lymphopenia
• Is currently being treated for an autoimmune disease/s
• Subjects with a history of venous and arterial thromboembolic events including, but not limited to, the following: deep venous thrombosis, pulmonary embolism, myocardial infarction, stroke, transient ischemic attack, or arterial insufficiency causing digital gangrene should be excluded. In addition, subjects with recent immobilization or recent surgery, should be excluded. Subjects with a history of abnormal prothrombotic laboratories such as congenital or inherited deficiency of antithrombin III, protein C, protein S, or confirmed diagnosis of antiphospholipid syndrome should also be excluded.
• Has active infections, is prone to infections or has chronic, recurrent or opportunistic infectious disease, including but not limited to, Epstein-Barr virus (EBV), cytomegalovirus (CMV) chronic renal infection, chronic chest infection, sinusitis, recurrent urinary tract infection, Pneumocystis carinii, aspergillosis, latent or active granulomatous infection, histoplasmosis, or coccidioidomycosis or an open, draining, or infected non-healing skin wound or ulcer
• Has recent or active hepatitis A infection, current/chronic hepatitis B and hepatitis C infection, or HIV infection. Participants with immunity to hepatitis B from previous infection (defined as negative HBsAg, positive anti-HBc, and positive hepatitis B surface antibody [anti-HBs]) or vaccination (defined as negative HBsAg, negative anti-HBc, and positive anti-HBs) may be eligible to participate.
• Has history of immune suppression disorders
• Has received a live (attenuated) vaccine within the last 60 days, including subjects who plan to receive live (attenuated) vaccines during the study or within 60 days after the final dose of study treatment.
• Has received influenza vaccine within 14 days of screening.
• Has received a biologic or immunotherapy in the last 6 months (If receiving allergy shots with stable dosing, is acceptable)
• Has received prescription or non-prescription medication and in the opinion of the Investigator, the product will interfere with the study procedures or data integrity or compromise the safety of the subject.
• Subjects with clinically significant abnormal laboratory test values in screening blood samples. In particular subjects with the following should be excluded:

Subjects with abnormal coagulation panel at screening such as abnormal PT or aPTT or fibrinogen

Abnormal liver function tests:

Liver enzyme abnormalities (except in the case of known Gilbert's syndrome) AST or ALT ≥3x ULN and total bilirubin ≥2x ULN AST or ALT ≥5x ULN AST or ALT ≥3x ULN if associated with appearance or worsening of rash or hepatitis symptoms Abnormal platelet counts (<150,000/mcL or > 450,000/mcL) Abnormal white blood cell counts (<3E3/uL or > 11E3/uL ) Abnormal eGFR (<60 mL/min/1.73m2) Elevated IgE level above 50 IU/mL

• Subjects planning to undergo Elective procedures or surgeries at any time after signing the ICF through the follow-up visit.
• Is pregnant or breastfeeding or expecting to conceive or father children within the projected duration of the trial, starting withInclusion :
• Able and willing to give informed consent for the trial
• Male or female aged ≥18 years on the day of signing informed consent
• Is medically stable based on physical examination, medical history, laboratory results, and vital signs performed at screening
• Women of childbearing potential must have a negative highly sensitive serum test (beta-human chorionic gonadotropin) at screening and a negative urine pregnancy test at the Visit 1 Day 1 prior to receiving the investigational product.
• Women must agree to use one of the following methods of birth control for the duration of the clinical trial: systemic hormonal contraceptive (oral, injected, transdermal), intrauterine device, double barrier (e.g., cervical cap or diaphragm with condom or spermicide). Men with female partners must agree to use double barrier contraception, unless their partner is using systemic hormonal contraceptives or has an intrauterine device.

Exclusion:

• Is over the age of 55 years old
• Positive COVID test at screening/baseline
• Has an active fever or has recently been exposed to a COVID-19 patient.
• Currently has or had a history of malignancy
• Has an immune deficiency syndrome (for example, severe combined immunodeficiency syndrome, T-cell deficiency syndromes, B-cell deficiency syndromes, or chronic granulomatous disease), or bone marrow or organ transplantation, or a disease associated with lymphopenia
• Is currently being treated for an autoimmune disease/s
• Subjects with a history of venous and arterial thromboembolic events including, but not limited to, the following: deep venous thrombosis, pulmonary embolism, myocardial infarction, stroke, transient ischemic attack, or arterial insufficiency causing digital gangrene should be excluded. In addition, subjects with recent immobilization or recent surgery, should be excluded. Subjects with a history of abnormal prothrombotic laboratories such as congenital or inherited deficiency of antithrombin III, protein C, protein S, or confirmed diagnosis of antiphospholipid syndrome should also be excluded.
• Has active infections, is prone to infections or has chronic, recurrent or opportunistic infectious disease, including but not limited to, Epstein-Barr virus (EBV), cytomegalovirus (CMV) chronic renal infection, chronic chest infection, sinusitis, recurrent urinary tract infection, Pneumocystis carinii, aspergillosis, latent or active granulomatous infection, histoplasmosis, or coccidioidomycosis or an open, draining, or infected non-healing skin wound or ulcer
• Has recent or active hepatitis A infection, current/chronic hepatitis B and hepatitis C infection, or HIV infection. Participants with immunity to hepatitis B from previous infection (defined as negative HBsAg, positive anti-HBc, and positive hepatitis B surface antibody [anti-HBs]) or vaccination (defined as negative HBsAg, negative anti-HBc, and positive anti-HBs) may be eligible to participate.
• Has history of immune suppression disorders
• Has received a live (attenuated) vaccine within the last 60 days, including subjects who plan to receive live (attenuated) vaccines during the study or within 60 days after the final dose of study treatment.
• Has received influenza vaccine within 14 days of screening.
• Has received a biologic or immunotherapy in the last 6 months (If receiving allergy shots with stable dosing, is acceptable)
• Has received prescription or non-prescription medication and in the opinion of the Investigator, the product will interfere with the study procedures or data integrity or compromise the safety of the subject.
• Subjects with clinically significant abnormal laboratory test values in screening blood samples. In particular subjects with the following should be excluded:

Subjects with abnormal coagulation panel at screening such as abnormal PT or aPTT or fibrinogen

Abnormal liver function tests:

Liver enzyme abnormalities (except in the case of known Gilbert's syndrome)

AST or ALT ≥3x ULN and total bilirubin ≥2x ULN AST or ALT ≥5x ULN AST or ALT ≥3x ULN if associated with appearance or worsening of rash or hepatitis symptoms Abnormal platelet counts (<150,000/mcL or > 450,000/mcL) Abnormal white blood cell counts (<3E3/uL or > 11E3/uL ) Abnormal eGFR (<60 mL/min/1.73m2) Elevated IgE level above 50 IU/mL

• Subjects planning to undergo Elective procedures or surgeries at any time after signing the ICF through the follow-up visit.
• Is pregnant or breastfeeding or expecting to conceive or father children within the projected duration of the trial, starting with the screening visit through 120 days after the last dose of trial treatment.
• Recent history of bleeding or bleeding disorders or any condition whereby in the opinion of the treating investigator giving anti-coagulation during treatment would be contraindicated.
• History of hypersensitivity to antihistamines.
• Weight is over 350lbs.
• Subjects with active drug or alcohol abuse within 1 year prior to screening
• Subject is participating in a clinical trial of another investigational drug or device, including subjects who have participated in another study for a duration of 5 half-lives of the investigational agent.
• Investigators could exclude subjects with any medical condition, including, but not limited to, cardiac, endocrinologic, hematologic, hepatic, immunologic, metabolic, urologic, pulmonary, neurologic, dermatologic, renal, or a psychiatric condition that, in the opinion of the Investigator, could compromise the participant's ability to participate in this study.

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 55 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

Op-T LLC

INDUSTRY

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Isaac Melamed, MD

Role: PRINCIPAL_INVESTIGATOR

IMMUNOe Health Centers

Locations

IMMUNOe Research

Centennial, Colorado, United States

Countries

United States

Other Identifiers

OPT-100-30

Identifier Type: -

Identifier Source: org_study_id