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SARS-CoV-2NCT06127498

The Safety and Tolerability of A8G6 COVID-19 Neutralization Antibody Combined With Nasal Spray

A study testing A8G6 SARS-CoV-2 Neutralization Antibody combination nasal spray and A8G6 SARS-CoV-2 Neutralization Antibody nasal excipient in people with SARS-CoV-2 and Prevention, run by The Second Affiliated Hospital of Chongqing Medical University at 1 site in China.

Unknown status

Status not confirmed. The sponsor has not verified this record for over two years, so it may be out of date.

Official record
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Trial summary

This is a randomized, double-blind, placebo-parallel intervention clinical study that will include approximately 108 healthy subjects based on inclusion and exclusion criteria. Patients meeting inclusion and exclusion criteria were randomly assigned to one of four different cohorts. Read more about this study

Who is it for?
Ages 18 to 65 yearsHealthy volunteers can take part
Conditions the study is for
SARS-CoV-2, Prevention
What is being tested?
A8G6 SARS-CoV-2 Neutralization Antibody combination nasal spray and A8G6 SARS-CoV-2 Neutralization Antibody nasal excipient
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
108 participants
Where
1 siteChina
Study dates
1 May 2022to 1 Dec 2023
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 65 years
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • Subjects fully understand the purpose, nature, method and possible adverse reactions of the experiment, voluntarily participate in the experiment, and sign informed consent before the experiment begins;
  • Healthy subjects aged 18-65 years (including the critical value) with an appropriate sex ratio between men and women;
  • The subjects had no birth plan for 3 months from the date of signing the informed consent to the end of the study, and agreed to voluntarily take effective and appropriate contraceptive measures with their partners during this period;
  • The subject agrees that from the beginning of the study (-1 day) to the end of the study, except for this study, only samples of NCOV nucleic acid from throat swabs will be taken, and nasal swabs will not be taken;
  • The subjects had not received any type of NCOV vaccine within 3 months prior to enrollment, and had no NCOV vaccination plan during the study period;
  • Subjects can communicate well with researchers and understand and comply with the requirements of this study.

Who cannot join

  • Allergic to any ingredient in this product and auxiliary materials; Or allergic (such as allergic to two or more drugs, food);
  • Patients with symptoms of acute upper respiratory tract infection within 1 week before administration;
  • Patients with acute episodes of chronic rhinitis or anatomical abnormalities affecting drug absorption in the nose;
  • Patients with a history of asthma;
  • Asplenia or functional asplenia caused by any condition;
  • Diseases or factors with clinical abnormalities that need to be excluded, including but not limited to diseases of the nervous system, cardiovascular system, kidney, liver, gastrointestinal system, respiratory system, metabolism, bone system and other systems;
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  • Vital signs, physical examination, laboratory examination (such as white blood cell count less than 3.0*109/L, platelet count less than 75*109/L, TB > 1.5*ULN, ALT > 1*ULN, AST > 1*ULN) and electrocardiogram examination of any items abnormal and judged by the investigator to be clinically significant;
  • Use of any prescription or over-the-counter drugs within 14 days before administration;
  • Patients who had received immunosuppressive therapy, cytotoxic therapy or inhaled corticosteroid therapy within 6 months before administration;
  • A history of drug abuse or use of any drug in the 6 months prior to drug administration;
  • Pregnant and lactating women;
  • The subject has not taken effective and appropriate contraceptive measures within 30 days before the drug administration;
  • The subjects had sperm and egg donation plans within 3 months after the first drug administration to the end of the study;
  • Blood donation or massive blood loss (≥200mL), receiving blood transfusion or using blood products within 3 months prior to drug administration; Or plan to donate blood or blood components during the trial;
  • Have participated in other drug clinical trials or device clinical trials, and have taken test drugs or used test devices within 3 months before drug administration;
  • Subjects may not be able to comply with the protocol to complete the study for other reasons or the investigator may decide that it is not suitable for participants.

Trial locations and contacts

1 site in 1 country.

China1 site, 1 recruiting
  • The Second Affiliated Hospital of Chongqing Medical University

    Chongqing, Chongqing Municipality, 400000

    Dazhi Zhang, M.D., 300595@hospital.cqmu.edu.cn

    Recruiting

Other trials in China

About this study

Official title: A Randomized, Double-blind, Placebo-parallel Controlled Clinical Study to Evaluate the Safety, Tolerability and Pharmacokinetics of A8G6 COVID-19 Neutralizing Antibody Combination Nasal Spray in Healthy Subjects

This is a randomized, double-blind, placebo-parallel intervention clinical study that will include approximately 108 healthy subjects based on inclusion and exclusion criteria. Patients meeting inclusion and exclusion criteria were randomly assigned to one of four different cohorts. Subjects in each cohort were randomly assigned 5:1 to two parallel administration groups, one of which served as a control. Each cohort was given either the experimental drug or placebo by nasal spray at different doses and intervals, and blood was collected on an empty stomach before the first dose. Right nostril and nasal swabs were collected for immunotoxicity, immunogenicity (immunogenicity collection and detection in cohorts 3 and 4 only), and drug concentration detection. Subjects in the first three cohort were required to return to the study Center 3±1 days after the last dose for blood samples, bilateral nostril and nasal swabs for drug concentration, immunotoxicity, physical examination, vital signs, and safety laboratory indicators (blood routine, blood biochemical, and urine routine). Subjects in cohort 4 returned to the study center 7±2 days after the last dose. To evaluate the safety and tolerability of A8G6 COVID-19 neutralization and antibody combined nasal spray in healthy subjects by comparing the test results of subjects in different cohorts, and to study its concentration in serum and nasal swabs in healthy subjects.

Read the detailed description

As of May 11, 2022, more than 519 million COVID-19 cases and 6.28 million deaths have been reported worldwide, according to Worldometer Real-time statistics. On November 27, 2021, a large number of highly transmissible mutated new variants of COVID-19 were found in South Africa, which was named Omicron (including subtypes BA.1 and BA.2) by WHO. Although the introduction of vaccines has played a great role in the prevention and control of COVID-19, the neutralizing antibodies stimulated by different vaccines differ greatly, and the antibody maintains a high titer in the human body for a short time (3-6 months at most), so the global demand for safe and effective prevention of COVID-19 remains unmet.

The novel coronavirus neutralizing antibody can directly bind to the envelope of the novel coronavirus to rapidly block the virus infection, which has been fully verified as a safe and effective treatment. But so far, there are no approved antibodies at home or abroad to prevent infection with the novel coronavirus, In addition, there is a lack of broad-spectrum monoclonal neutralizing antibodies with high efficiency against mutant strains (currently, all the approved neutralizing antibodies in the world are used in combination with two antibodies), which can be used as reference for the administration of neutralizing antibodies for the prevention of a wide range of people (intravenous infusion as the prophylactic administration will lead to low compliance of the administration population).

MY-586 and MY-558, two active components of the novel coronavirus neutralizing antibody A8G6, were screened from peripheral blood lymphocytes of patients recovering from COVID-19, from which 209 strains of novel coronavirus specific antibodies were isolated. The screened MY-586 is a super antibody with strong and effective neutralization against the novel coronavirus and the circulating British strain, Indian strain, South African strain and Indian Delta strain. Its high affinity, high level and activity against the novel coronavirus, broad-spectrum variant strain activity and antibody structure analysis supporting superior activity. It has been published in the authoritative international journal Nature Communications. MY-558 is a super antibody with high affinity, high activity and high affinity to both the novel coronavirus and Omicron (BA.1 and BA.2) strains, and the binding regions of MY-586 and MY-558 and RBD do not overlap, so there is no competitive relationship between the two. On the contrary, the two have certain synergistic effects on each novel coronavirus strain. Among the COVID-19 neutralizing antibodies published worldwide, A8G6 antibody has one of the best affinity and neutralizing activity against COVID-19.

At present, the evaluation of the preclinical efficacy and safety of A8G6 combined antibody and the production of CMC to support the clinic are nearing completion. All the data showed that the A8G6 combined antibody had excellent efficacy, safety and druggability. In particular, A8G6 combined antibody is administered by nasal spray. Although there are no approved nasal spray neutralizing antibody drugs on the market at home and abroad, the investigators have successfully solved the drugging of A8G6 combined antibody by nasal spray and the development of nasal spray device. Nasal spray type A8G6 combined antibody is easy to carry, easy to administer, and has strong accessibility and compliance for the population. It can be used as a new and widely used safe and effective preventive measure besides vaccine. Therefore, the rapid and successful clinical research and development of A8G6 combined antibody will provide a more effective guarantee for social security and effective prevention of COVID-19.

Being tested
A8G6 SARS-CoV-2 Neutralization Antibody combination nasal spray, A8G6 SARS-CoV-2 Neutralization Antibody nasal excipient

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • A8G6 SARS-CoV-2 Neutralization Antibody combination nasal sprayBiological

    Subjects in each cohort were randomly assigned 5:1 to two parallel administration groups, one of which served as a control. Each cohort was given either the experimental drug or placebo by nasal spray at different doses and intervals, and blood was collected on an empty stomach before the first dose. Right nostril and nasal swabs were collected for immunotoxicity, immunogenicity (immunogenicity collection and detection in cohorts 3 and 4 only), and drug concentration detection. Subjects in the first three cohort were required to return to the study Center 3±1 days after the last dose for blood samples, bilateral nostril and nasal swabs for drug concentration, immunotoxicity, physical examination, vital signs, and safety laboratory indicators (blood routine, blood biochemical, and urine routine). Subjects in cohort 4 returned to the study center 7±2 days after the last dose.

  • A8G6 SARS-CoV-2 Neutralization Antibody nasal excipientOther

    Subjects in each cohort were randomly assigned 5:1 to two parallel administration groups, one of which served as a control. Each cohort was given either the experimental drug or placebo by nasal spray at different doses and intervals, and blood was collected on an empty stomach before the first dose. Right nostril and nasal swabs were collected for immunotoxicity, immunogenicity (immunogenicity collection and detection in cohorts 3 and 4 only), and drug concentration detection. Subjects in the first three cohort were required to return to the study Center 3±1 days after the last dose for blood samples, bilateral nostril and nasal swabs for drug concentration, immunotoxicity, physical examination, vital signs, and safety laboratory indicators (blood routine, blood biochemical, and urine routine). Subjects in cohort 4 returned to the study center 7±2 days after the last dose.

Study groups in NCT06127498
Study groupRoleWhat they receive
A8G6 SARS-CoV-2 Neutralization Antibody combination nasal sprayExperimentalSpecifications: 5 mg/mL, 6 mL/ bottle; Provided by Chongqing Mingdao Haoyue Biotechnology Co., LTD
Receives: Biological: A8G6 SARS-CoV-2 Neutralization Antibody combination nasal spray
A8G6 SARS-CoV-2 Neutralization Antibody nasal excipientPlacebo comparatorSpecification: 0 mg/mL, 6 mL/ bottle; Provided by Chongqing Mingdao Haoyue Biotechnology Co., LTD
Receives: Other: A8G6 SARS-CoV-2 Neutralization Antibody nasal excipient

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. vital signs

    Including pulse, blood pressure, temperature

    Measured: 14 days before the trial,1 days before the trial, after each dose

  2. laboratory tests

    Including blood routine, blood biochemistry, routine urine pregnancy test (female) limited

    Measured: 14 days before the trial,1 days before the trial, after each dose

  3. 12-lead electrocardiogram

    Including ECG QT Interval、PR Interval

    Measured: 14 days before the trial,1 days before the trial, after each dose

  4. adverse events

    Adverse reactions were recorded by questionnaire. Observe any adverse events

    Measured: Up to 1 year

Secondary outcomes (5)
  1. Drug concentration index

    Serum and nasal swab drug concentration

    Measured: 15 minutes after each dose

  2. Immunotoxicity detection indicators

    Serum autoantibody titer

    Measured: 15 minutes after each dose

  3. Immunogenicity detection indicators

    ADA detection of serum MY-586 and MY-558

    Measured: 15 minutes after each dose

  4. Cytokines

    Serum Cytokines titer

    Measured: 15 minutes after each dose

  5. lymphocyte subsets

    Serum lymphocyte subsets

    Measured: 15 minutes after each dose

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted13 Nov 2023
  2. Study start1 May 2022
  3. Primary completion1 Dec 2023 (estimated)
  4. Study completion1 Dec 2023 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Double blind
Who is masked
Participant, Investigator
Enrolment
108 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06127498
Sponsor's protocol ID
2022-69
Status last verified
Dec 2022
First submitted
27 Dec 2022
Last updated
13 Nov 2023
Results posted
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A study testing A8G6 SARS-CoV-2 Neutralization Antibody combination nasal spray and A8G6 SARS-CoV-2 Neutralization Antibody nasal excipient in people with SARS-CoV-2 and Prevention, run by The Second Affiliated Hospital of Chongqing Medical University at 1 site in China.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 6 inclusion and 16 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: status not confirmed, as of the sponsor's last update on 13 Nov 2023. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in China. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

Results are not available in the source record.

How can a doctor refer a patient or contact the research team?

Contact Dazhi Zhang, M.D. (+86 13452382818, 300595@hospital.cqmu.edu.cn), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

vital signs (time frame: 14 days before the trial,1 days before the trial, after each dose). The study lists 4 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 13 Nov 2023.

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