IVIG vs SCIG in CIDP

December 10, 2025 updated by: Luigi Brunetti, Rutgers, The State University of New Jersey

The Influence of Body Composition on Immunoglobulin Disposition After Intravenous and Subcutaneous Administration

Current dosing practices for immunoglobulin G (IgG) may be inadequate in extreme body weight. The current study will evaluate the influence of body composition on intravenous and subcutaneous administration of immunoglobulin G in patients.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Current dosing practices for immunoglobulin G (IgG) may be inadequate in extreme body weight. Total (TBW), ideal (IBW), and adjusted (AdjBW) body weight-based dosing strategies are suggested, but these recommendations are based on expert opinion rather than high quality evidence. The adoption of a specific strategy is highly variable depending on the clinician and/or institutional setting. Recently, payors have also adopted strategies to reduce IgG therapy costs of by capping doses. These recommendations are often based on the presumption that IgG distribution is limited to the vascular space. While this assertion is logical, it does not account for changes adipose tissue may confer on target sites, nor does it account for the potential for adipose tissue to function serve as a metabolic sink or a source of inflammatory mediators. The later would be especially important in patients receiving SCIG. Several observational studies have evaluated IgG dosing in obese patients and have been the source of support for dosing strategies. Many of these studies were not representative of specific populations, contained a wide variety of patients with different IgG indications, and had inadequate serum sampling. More recently, the phase III randomized controlled PATH trial did not find a correlation with serum IgG concentrations and clinical endpoints. However, it is important to note that the study was not designed to evaluate pharmacokinetic and pharmacodynamic endpoints. There is also considerable interpatient variation in response; therefore, identification of patient characteristics that predict response or IgG change from baseline will be a useful tool to improve patient responses. Our study will evaluate the influence of body composition and other patient characteristics may have on IgG exposure when given intravenously or subcutaneously.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
20

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • United States
    • New Jersey
      • New Brunswick, New Jersey, United States, 08901
        • Recruiting
        • Rutgers, The State University of New Jersey Clinical Research Center
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

14 years to 61 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Patients aged >18 years with a current diagnosis of CIDP (based on European Federation of Neurological sciences / Peripheral Nerve Society CIDP diagnostic criteria).
  • 1:1 conversion of IVIG to SCIG (weekly dose conversion) must fall within 0.2-to-0.4 mg/kg dose for SCIG.

Exclusion Criteria:

  • Patients receiving IVIG for indications other than CIDP will be excluded.
  • Patients with liver impairment (elevations in liver enzymes of greater than 3 times the upper limit of normal) or reduced renal function (CrCl < 50 mL/min) will be excluded
  • Active malignancies
  • Diabetes
  • Myasthenia gravis
  • Immunodeficiency
  • Autoimmune disease

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Other
  • Allocation: Non-Randomized
  • Interventional Model: Crossover Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Intravenous immune globulin G
Subjects will receive there current intravenous immune globulin dose.
Drug: Intravenous immune globulin G
Intravenous immune globulin G dosed based on the subjects's current dose received for the treatment of CIDP.
Other Names:
  • Privigen, IVIG
Experimental: Subcutaneous immune globulin G
The dosage will be converted from the subject's current intravenous immune globulin G dosage 1:1 (gm per gm).
Drug: Subcutaneous immune globulin G
Subcutaneous immune globulin G converted from the subject's current IVIG dose 1:1.
Other Names:
  • Hizentra, SCIG

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Assessment of drug half-life
Time Frame: Through study completion, an average of 4 weeks
Calculation of drug half-life based on data obtained from serum samples
Through study completion, an average of 4 weeks
Assessment of immune globulin G serum concentration after intravenous immune globulin G administration
Time Frame: Just before drug administration, immediately after drug administration, approximately days 7 and 14 post drug administration
Serum IgG concentration (including subtype) will be measured using a human IgG ELISA kit
Just before drug administration, immediately after drug administration, approximately days 7 and 14 post drug administration
Assessment of immune globulin G serum concentration after subcutaneous immune globulin G administration
Time Frame: Just before drug administration, immediately after drug administration, approximately days 2, 4 and 7 post drug administration
Serum IgG concentration (including subtype) will be measured using a human IgG ELISA kit
Just before drug administration, immediately after drug administration, approximately days 2, 4 and 7 post drug administration

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Assessment of grip strength
Time Frame: Baseline and just before administration of next immune globulin dose.
Grip strength will be measured using the handheld Martin Vigorimeter just before each dose of IgG is administered during the study period. Subjects will be asked to squeeze the dynamometer as hard as possible with each of his or her hands in a standing position.
Baseline and just before administration of next immune globulin dose.
Assessment of muscle function
Time Frame: Baseline and just before administration of next immune globulin dose.
The Medical Research Council (MRC) system for testing and grading of muscle function aims to provide a standardized and objective way to assess muscle function. It was originally introduced in 1943 and has a long history of use in neurology, rehabilitation and general medicine examinations. Assessments of muscles are done bilaterally, meaning that for each muscle tested, the same muscle on the opposite side of the body is also tested. The MRC sum score is finally calculated by adding the score of each individually assessed muscle. The MRC score ranges from 0 - 30 with 0 as the worst outcome.
Baseline and just before administration of next immune globulin dose.
Assessment of patient disability
Time Frame: Baseline and just before administration of next immune globulin dose.
The Rasch Overall Disability scale (I-RODS) and the Inflammatory Neuropathy Cause and Treatment Sensory (INCAT) sum score disability scale will be completed before the infusion of IgG. The I-RODS score can range from 0 to 48 with 0 representing the greatest disability. The INCAT score ranges from 0 - 10 with 10 representing worse outcome.
Baseline and just before administration of next immune globulin dose.
Assessment of fatigue
Time Frame: Baseline and just before administration of next immune globulin dose.
Fatigue is a common patient concern in CIDP and the Rasch-built fatigue severity scale (R-FSS) will be completed before the infusion of IgG. The R-FSS ranges from 9 to 63 with 63 being the worst score
Baseline and just before administration of next immune globulin dose.

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Rutgers, The State University of New Jersey

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Luigi Brunetti, PhD, Rutgers, The State University of New Jersey

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
September 11, 2022

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 1, 2026

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 1, 2026

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
October 10, 2022

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
October 13, 2022

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
October 18, 2022

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
December 11, 2025

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
December 10, 2025

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
December 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • Pro2019001038

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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