NCT07123727

Brief Summary

This study will examine the safety and effectiveness of Anktiva in treating patients with Long COVID-19 which is defined as persistent symptoms of a COVID-19 infection that remain after the infection is over.

Trial Health

77
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
40

participants targeted

Target at P25-P50 for phase_2

Timeline
2mo left

Started Sep 2025

Shorter than P25 for phase_2

Geographic Reach
1 country

1 active site

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress82%
Sep 2025Jul 2026

First Submitted

Initial submission to the registry

July 30, 2025

Completed
15 days until next milestone

First Posted

Study publicly available on registry

August 14, 2025

Completed
21 days until next milestone

Study Start

First participant enrolled

September 4, 2025

Completed
10 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

July 1, 2026

Expected
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

July 1, 2026

Last Updated

October 21, 2025

Status Verified

August 1, 2025

Enrollment Period

10 months

First QC Date

July 30, 2025

Last Update Submit

October 17, 2025

Conditions

Outcome Measures

Primary Outcomes (9)

  • Incidence of treatment emergent adverse events (TEAEs) through 30 days post final study drug administration.

    Through 30 days post final study drug administration.

  • Incidence of grade 3 or higher TEAEs through 30 days post final study drug administration.

    Through 30 days post final study drug administration.

  • Incidence of serious adverse events (SAEs) through 30 days post final study drug administration.

    Through 30 days post final study drug administration.

  • Incidence of abnormal changes in safety laboratory tests (CBC and CMP).

    Through the end of the study treatment period (approximately 75 days).

  • Clinically important changes in vital signs such as temperature in degrees Fahrenheit.

    Through the end of the study treatment period (approximately 75 days).

  • Clinically important changes in vital signs such as heart rate in beats per minute.

    Through the end of the study treatment period (approximately 75 days).

  • Clinically important changes in vital signs such as blood pressure in millimeters of mercury (mmHg).

    Through the end of the study treatment period (approximately 75 days).

  • Clinically important changes in vital signs such as respiratory rate in breaths per minute.

    Through the end of the study treatment period (approximately 75 days).

  • Clinically important changes in vital signs such as oxygen saturation in percentage.

    Through the end of the study treatment period (approximately 75 days).

Secondary Outcomes (1)

  • Percent increase or decrease change in the Absolute lymphocyte count (as measured on CBC) from Screening to End Of Study with various timepoints.

    Through the end of the study treatment period (approximately 75 days).

Other Outcomes (2)

  • Percent increase or decrease change in frequency and activation of NK cells and CD8+ T cells as measured by Flow Cytometry from prior to NAI administration to End Of Study.

    Through the end of the study treatment period (approximately 75 days).

  • Immunologic function of NK cells and CD8+ T cells as measured by Flow Cytometry for Peripheral Blood Mononuclear Cell Evaluation and Secretome testing for analyzing cytokines for understanding the body's defenses from prior to NAI administration to EOS.

    Through the end of the study treatment period (approximately 75 days).

Study Arms (1)

N-803

EXPERIMENTAL
Drug: Anktiva

Interventions

600ug of NAI administered subcutaneously

Also known as: N-803, Nogapendekin Alfa Inbakicept, NAI
N-803

Eligibility Criteria

Age18 Years - 70 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Age ≥ 18 and \< 70 years.
  • History of at least one SARS-CoV-2 infection, defined as report of a positive nucleic acid amplification test (NAAT) and/or a positive SARS-CoV-2 antigen rapid diagnostic test (RDT). Those with only suspected but unconfirmed infections are not eligible for this study.
  • Clinical evidence of Long COVID, as confirmed by the Investigator's assessment.
  • At least 2 symptoms or at least 1 severe symptom as assessed by the study team (see list) that are new or worsened since the time of a SARS-CoV-2 infection, not known to be attributable to another cause upon assessment by the PI. At least 2 symptoms from those listed here must be present: systemic symptoms (eg, fatigue, chills, post-exertional malaise), neurocognitive symptoms (eg, trouble with memory/concentration ("brain fog"), headache, dysautonomia/postural orthostatic tachycardia symptoms, dizziness, unsteadiness, neuropathy, sleep disturbance), cardiopulmonary symptoms (eg, chest pain, palpitations, shortness of breath, cough, fainting spells), musculoskeletal symptoms (eg, muscle aches, joint pain), gastrointestinal symptoms (eg, nausea, diarrhea). Although other symptoms (eg, skin rash, hair loss, trouble with smell/taste, genitourinary symptoms) will be recorded and tracked, at least 2 core symptoms listed above must be present. Note: the 2 symptoms can be from within the same category (for example, brain fog and headache) AND
  • Symptoms must have been present for at least 60 days prior to screening. Symptoms that wax and wane must have been initially present at least 60 days prior to screening AND
  • Symptoms must be reported to be at least somewhat bothersome and to have an impact on quality of life and/or everyday functioning AND
  • At least 90 days have elapsed since the most recent suspected or confirmed SARS-CoV-2 infection and the time of screening. Note: suspected infections will be determined based upon assessment by the study Investigators.
  • Not currently hospitalized.
  • Body mass index (BMI) 18 to 50 kilograms/meter squared (kg/m2), inclusive, at the time of screening.
  • In otherwise stable health, as assessed by the Investigator within 28 days prior to screening, based on medical history, physical examination, laboratory findings, and vital signs.
  • For male participants,
  • a. Participants with partners that are WOCBP are strongly advised to inform their partners and must agree to use effective contraception from study entry (defined as INT1) through 7 months after the last dose of study intervention. Participants with pregnant partners must agree to use condoms during vaginal intercourse from study entry (defined as INT1) through 14 days after the last dose of study intervention administration.
  • For female participants,
  • a. A female participant who engages in sexual intercourse with male partners is eligible to participate if she is not pregnant or breastfeeding, and the following conditions applies: i. Is not a WOCBP OR ii. All of the following apply:
  • Is a WOCBP and is using a contraceptive method from - 21 days from study entry (defined as INT1), during the study intervention period, and for at least 7 months after the last study intervention administration.
  • +3 more criteria

You may not qualify if:

  • Previously received a SARS-CoV-2 antiviral or monoclonal antibody 30 days prior to planned INT1 or plan to receive such treatment before exiting the study.
  • Plans to receive any investigational or approved vaccine or booster for SARS-CoV-2 within 14 days prior to plan to receive such treatment before exiting the study.
  • History of autoimmune disease including, but not limited, to celiac disease, rheumatoid arthritis, psoriasis, and inflammatory bowel diseases.
  • Active cardiovascular disease, defined as known prior:
  • Myocardial infarction within 90 days of screening; OR
  • Coronary artery bypass procedure within 90 days of screening; OR
  • Current heart failure with reduced ejection fraction (\<45%); OR
  • Current pulmonary arterial hypertension.
  • Known stroke within 3 months prior to planned INT1.
  • Known active bacterial, fungal, viral, or other infection besides SARS-CoV-2 requiring treatment within the 14 days prior to INT1 and meeting criteria for systemic involvement upon review by the PI.
  • Major surgery within 3 months prior to planned INT1 or planned major surgery during the first 75 days following planned INT1.
  • History of unplanned hospitalization for \>24 hours within 28 days prior to Screening.
  • Active Hepatitis C (Hep C) infection (defined as Hep C Ab positive or indeterminate with detectable Hep C RNA). Note: Those with cured Hep C (Ab positive or indeterminate but negative Hep C RNA) will remain eligible.
  • Laboratory abnormalities including:
  • ANC \< 1,500 per mm3
  • +16 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Chan Soon-Schiong Institute for Medicine (CSSIFM)

El Segundo, California, 90245, United States

RECRUITING

MeSH Terms

Conditions

Post-Acute COVID-19 Syndrome

Interventions

ALT-803

Condition Hierarchy (Ancestors)

COVID-19Pneumonia, ViralPneumoniaRespiratory Tract InfectionsInfectionsVirus DiseasesCoronavirus InfectionsCoronaviridae InfectionsNidovirales InfectionsRNA Virus InfectionsLung DiseasesRespiratory Tract DiseasesPost-Infectious DisordersChronic DiseaseDisease AttributesPathologic ProcessesPathological Conditions, Signs and Symptoms

Central Study Contacts

Study Design

Study Type
interventional
Phase
phase 2
Allocation
NA
Masking
NONE
Purpose
TREATMENT
Intervention Model
SINGLE GROUP
Sponsor Type
INDUSTRY
Responsible Party
SPONSOR

Study Record Dates

First Submitted

July 30, 2025

First Posted

August 14, 2025

Study Start

September 4, 2025

Primary Completion (Estimated)

July 1, 2026

Study Completion (Estimated)

July 1, 2026

Last Updated

October 21, 2025

Record last verified: 2025-08

Locations