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GC5107

Phase 3

Immunologic Deficiency Syndromes | Monoclonal antibody | Other |Atlantic International Corp.|Last Updated: Jul 25, 2025

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLEDDMC
Total Trials1
Total Enrollment49

FDA Designations

No designations recorded

Clinical trial landscape

GC5107 · 2 trials · 2 indications

Phase 3 2
NCT04565015Study of Immune Globulin Intravenous (Human) GC5107 in Pediatric Subjects With Primary Humoral ImmunodeficiencyPrimary Immune Deficiency
ACTIVE NOT_RECRUITING24 Analytics
NCT02783482Study of Immune Globulin Intravenous (Human) GC5107 in Subjects With Primary Humoral ImmunodeficiencyImmunologic Deficiency Syndromes
COMPLETED49 Analytics
PHASE3ACTIVE NOT_RECRUITING
Study of Immune Globulin Intravenous (Human) GC5107 in Pediatric Subjects With Primary Humoral Immunodeficiency
Primary Immune DeficiencyUnlock trial analytics
PHASE3COMPLETED
Study of Immune Globulin Intravenous (Human) GC5107 in Subjects With Primary Humoral Immunodeficiency
Immunologic Deficiency SyndromesUnlock trial analytics

Study Endpoints

Primary Endpoints

The Pharmacokinetic (PK) Plasma concentration-time curve of total IgG
before and after 5th infusion (12 or 16 weeks)
The Pharmacokinetic (PK) Half-life of total IgG
before and after 5th infusion (12 or 16 weeks)
The Pharmacokinetic (PK) Area under the curve of total IgG
before and after 5th infusion (12 or 16 weeks)
The Pharmacokinetic (PK) Volume of distribution of total IgG
before and after 5th infusion (12 or 16 weeks)
The Pharmacokinetic (PK) Maximum concentration of total IgG
before and after 5th infusion (12 or 16 weeks)
The Pharmacokinetic (PK) Minimum concentration of total IgG
before and after 5th infusion (12 or 16 weeks)
The Pharmacokinetic (PK) Time of maximum concentration of total IgG
before and after 5th infusion (12 or 16 weeks)
The Pharmacokinetic (PK) Clearance of total IgG
before and after 5th infusion (12 or 16 weeks)
Trough serum total IgG levels before each infusion of GC5107 in all subjects and the interval between infusions
12 months
The proportion of infusions with temporally associated adverse events (AEs) that occur during or within 1 hour, 24 hours, and 72 hours following an infusion of investigational product
12 months

AEs that occur during or within 1 hour, 24 hours, and 72 hours following each infusion during 12 months of the study period

The Incidence of Acute Serious Bacterial Infections (SBI)
One year

The incidence of acute serious bacterial infections (aSBIs) meeting FDA guidance criteria, which includes bacterial pneumonia, bacteremia/sepsis, bacterial meningitis, visceral abscesses, and osteomyelitis/septic arthritis. Efficacy data is evaluated by comparing the frequency of acute serious bacterial infections per subject per year according to the FDA guideline of an upper one-sided 99% confidence limit \< 1.0 per subject per year.

The Proportion of Infusions With Temporally Associated Adverse Events (TAAEs) That Occur Within 72 Hours Following an Infusion of Test Product
Within 72 hours after an infusion of GC5107

The proportion of infusions with temporally associated adverse events occurring during or within 72 hours following infusion, whether or not they were thought to be related to GC5107

Secondary Endpoints

The Pharmacokinetic (PK) Maximum concentration of IgG subclasses
before and after 5th infusion (12 or 16 weeks)
The Pharmacokinetic (PK) Minimum concentration of IgG subclasses
before and after 5th infusion (12 or 16 weeks)
The Pharmacokinetic (PK) Half-life of IgG subclasses
before and after 5th infusion (12 or 16 weeks)
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
GC5107EXPERIMENTALImmune Globulin Intravenous (Human), 10% Liquid

Interventions

NameTypeDescription
GC5107BIOLOGICALIntravenously infused at a dose of 300 - 900 mg per kg (of body weight) every 21 or 28 days for 12 months
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Eligibility Criteria

Age Range2 Years to 16 Years
SexALL
Healthy VolunteersNo
Study Sites8

Inclusion Criteria: * Subject must be ≥ 2 to \< 17 years of age, at the time of signing the informed consent * Pediatric subject has a confirmed and documented clinical diagnosis of Primary Humoral Immunodeficiency, including hypogammaglobulinemia or agammaglobulinemia * Subject who has received 30...

Countries:United StatesBosnia and HerzegovinaSerbiaCanada
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Frequently asked questions about GC5107

What is GC5107 used for?

GC5107 is an investigational immune globulin intravenous (human) product being studied for the treatment of primary humoral immunodeficiency, a type of primary immune deficiency. It is intended to replace missing antibodies in patients with immunologic deficiency syndromes, helping to prevent infections.

Who makes GC5107?

GC5107 is being developed by Atlantic International Corp., a company traded under the ticker symbol ATLN. The company is conducting clinical trials to evaluate the safety and efficacy of this monoclonal antibody product in patients with primary immune deficiency.

What phase is GC5107 in?

GC5107 is currently in Phase 3 clinical development. It is an investigational drug, meaning it has not yet been approved by regulatory authorities. Two Phase 3 trials have been conducted or are ongoing to assess its use in primary humoral immunodeficiency.

What clinical trials is GC5107 in?

GC5107 has been studied in two Phase 3 trials. NCT02783482, completed, enrolled 49 subjects with primary humoral immunodeficiency in the United States and Canada. NCT04565015, active but not recruiting, is enrolling 24 pediatric subjects in the United States, Bosnia and Herzegovina, and Serbia.

How does GC5107 work?

GC5107 is an immune globulin intravenous (human) product, which provides passive immunity by delivering antibodies directly into the bloodstream. It is designed to supplement the deficient antibody levels in patients with primary humoral immunodeficiency, helping their immune system fight off infections.

Is GC5107 the same as other immune globulin products?

GC5107 is a specific immune globulin intravenous (human) product developed by Atlantic International Corp. It is being studied specifically for primary humoral immunodeficiency. No alternative names for GC5107 have been disclosed in the clinical trial information.