Pharmacokinetics (PK) and Safety of Subgam-VF in Primary Immunodeficiency Diseases

Brief Title

Pharmacokinetics (PK) and Safety of Subgam-VF in Primary Immunodeficiency Diseases

Official Title

A Phase III, Multicenter, Open-Label Study to Evaluate the Pharmacokinetics and Safety of Subgam-VF in Primary Immunodeficiency Diseases

Brief Summary

      The main objective of the study is to determine the pharmacokinetics profile of Subgam-VF.
      The secondary objectives are to assess the safety of Subgam-VF and refine the dose adjustment
      coefficient for Subgam-VF needed for subjects switching from prior intravenous immunoglobulin
      (IGIV) therapy.

Detailed Description

      This will be a Phase III, multicenter, open-label, non-randomized study.

      Following a screening period, eligible subjects will commence weekly Subgam-VF treatment;
      this is a 16% subcutaneous IgG product.

      Subjects will receive Subgam-VF for 26 weeks during which time safety will be assessed.

      After Week 21, PK sampling will commence.

      Follow-up visit (one week after the last Subgam-VF infusion, Week 27). All AEs will be
      monitored up to 28 days after the last Subgam-VF infusion by telephone contact (Week 30).

      Subgam-VF will be administered subcutaneously using infusion pumps.

      Subjects will be given diaries to record adverse event data as well as any infusions
      administered at home. In addition there will be a telephone follow up by an appropriately
      qualified site staff member on day 3 after each site administered and home administered
      infusion to check for any adverse reactions including infusion site reactions and remind
      subjects to document these in their subject study diary.

Study Phase

Phase 3

Study Type


Primary Outcome

Data (Derived From Absolute Concentration) Were Pooled With Historical Data and a Treatment Variable Defined (Subgam-VF or Gammaplex 5% IGIV). Outcome Measure Defined as Log Transformed sAUC0-t Standardized to One Week.

Secondary Outcome

 Number of Participants Who Experienced AEs Based on Treatment-emergent AEs (TEAEs)


Primary Immune Deficiency Disorders



Study Arms / Comparison Groups

Description:  Subgam-VF is a 16% IgG and will be administered weekly, by subcutaneous infusion. The total duration of treatment will be for 26 weeks.


* Includes publications given by the data provider as well as publications identified by National Clinical Trials Identifier (NCT ID) in Medline.

Recruitment Information

Recruitment Status


Estimated Enrollment


Start Date

August 20, 2015

Completion Date

May 25, 2017

Primary Completion Date

May 25, 2017

Eligibility Criteria

        Inclusion criteria:

          1. Aged between 2 and 75 years (at time of initial consent).

          2. Body Mass Index (BMI) < 46 for adults (aged 16 years & older), & BMI < 28 for

          3. Diagnosed with primary immunodeficiency disease e.g. common variable immunodeficiency,
             X-linked & autosomal forms of agammaglobulinaemia, hyper-IgM syndrome, Wiskott-Aldrich

          4. Currently receiving a licensed (or investigational stage III, IIIb) IGIV or SCIG and

               1. IGIV dose is between 300 and 800 mg/kg/month. SCIG dose is between 110 & 300

               2. Dose is stable for at least the past three months (i.e. consistent mg/kg +/- 5%);

               3. The infusion interval is every 21 or 28 days for IGIV & seven days for SCIG;

               4. Has a documented trough level of ≥ 6 g/L (600 mg/dL) on current IgG therapy. If
                  not available can be obtained at the screening visit, Visit 1 (Week 0).

          5. Female subjects who are (or become) sexually active must practice contraception by
             using a method of proven reliability for the duration of the study.

          6. Females of child-bearing potential, (defined from the onset of menstruation to one
             year post menopause), must have a negative result on a urine HCG-based pregnancy test.

          7. Willing to comply with all aspects of the protocol, including blood sampling, for the
             duration of the study.

          8. Signed an informed consent form. In the case of subjects under the legal age the
             parent/guardian will sign an informed consent form & where appropriate the subject
             will sign an assent form.

        Exclusion Criteria:

          1. Has a history of any severe anaphylactic reaction to blood or any blood-derived

          2. Has selective IgA deficiency or has a history of antibodies to IgA.

          3. Has clinically significant impairment of cellular or innate immunity at the discretion
             of the Investigator

          4. Has evidence of an active infection at the time of enrolment (i.e. on day of first
             infusion). Subjects who are asymptomatic but have not completed their course of
             antibiotics are eligible.

          5. Has previously completed or withdrawn from this study.

          6. Is currently receiving, or has received, any investigational agent within the prior
             three months, unless it is an investigational stage III, IIIb IGIV or SCIG.

          7. Is pregnant (confirmed by a positive result on an HCG-based pregnancy test) or is

          8. Is positive for any of the following at screening:

             • Serological test for HIV 1&2, HCV, or HBsAg

          9. Has levels at screening greater than 2.5 times the upper limit of normal as defined at
             the central laboratory of any of the following:

               -  Alanine transaminase (ALT)

               -  Aspartate transaminase (AST)

         10. Has severe renal impairment (defined as serum creatinine greater than two times the
             upper limit of normal or BUN greater than two times the upper limit of normal for the
             range of the laboratory doing the analysis); the subject is on dialysis; or has a
             history of acute renal failure.

         11. Is known to abuse alcohol, opiates, psychotropic agents, or other chemicals or drugs,
             or has done so within the past 12 months.

         12. Has a history of DVT, or thrombotic complications of IgG therapy, or a prior diagnosis
             of thrombophilia.

         13. Suffers from any acute or chronic medical condition, (e.g. renal disease or
             predisposing conditions for renal disease, coronary artery disease, or protein losing
             state, proteinuria) that the Investigator feels may interfere with the conduct of the

         14. Has an acquired medical condition, such as chronic lymphocytic leukemia, lymphoma,
             multiple myeloma, chronic or recurrent neutropenia (ANC < 1 x 109/L).

         15. Is receiving the following medication:

               -  Steroids (long-term daily, > 0.15 mg of prednisone equivalent/kg/day).
                  Requirement for short or intermittent courses of > 0.15mg/kg/day would not
                  exclude a subject.

               -  Immunosuppressive drugs

               -  Immunomodulatory drugs

         16. If ≥ 18 years of age, has non-controlled arterial hypertension (systolic blood
             pressure > 160 mmHg &/or diastolic blood pressure > 100 mmHg). For younger subjects
             refer to current guidelines for diagnosis of blood pressure1.

         17. Has anemia (hemoglobin < 10 g/dL) at screening.

         18. Has severe dermatitis that would preclude sites for safe product administration.




2 Years - 75 Years

Accepts Healthy Volunteers



Eric Wolford, , 

Location Countries

United States

Location Countries

United States

Administrative Informations



Organization ID


Responsible Party


Study Sponsor

Bio Products Laboratory

Study Sponsor

Eric Wolford, Study Director, Bio Products Laboratory Limited

Verification Date

August 2018