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A Clinical Trial to Evaluate Efficacy, Safety, and Pharmacokinetics of Gamunex in Participants With Chronic Lymphocytic Leukemia, Multiple Myeloma, or Non-Hodgkin Lymphoma

An Open-label, Multi-Center, Single-arm Prospective Clinical Trial to Evaluate Efficacy, Safety, and Pharmacokinetics of Gamunex®-C Plus Standard Medical Treatment to Prevent Infections in Participants With Secondary Antibody Deficiency Associated With Chronic Lymphocytic Leukemia, Multiple Myeloma, or Non-Hodgkin Lymphoma

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07582432
Acronym
SIGMA
Enrollment
49
Registered
2026-05-12
Start date
2026-04-23
Completion date
2028-08-31
Last updated
2026-05-12

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Chronic Lymphocytic Leukemia, Multiple Myeloma, or Non-Hodgkin Lymphoma

Keywords

Phase 3, Clinical trial, Secondary Antibody Deficiency Associated with Chronic Lymphocytic Leukemia, Multiple Myeloma, Non-Hodgkin Lymphoma

Brief summary

The main goal of this study is to show that people with certain immune problems (from Chronic Lymphocytic Leukemia, Multiple Myeloma, or Non-Hodgkin Lymphoma) get fewer serious infections when they receive Gamunex C through an IV once every 4 weeks, along with their usual medical care, for one year. All participants will receive Gamunex-C 500 mg/kg once every 4 weeks (total 13 doses) starting Day 1 (Week 1) through Week 48 (end of Treatment Phase).

Interventions

DRUGGamunex-C, 10% Injectable Solution

Sterile solution

Sponsors

Grifols Biologicals, LLC
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

Participants with documented and confirmed diagnosis of any of the diseases below: * B-cell CLL according to iwCLL criteria and Rai staging of intermediate (1 and 2) or high (3 and 4); or * MM according to the International Myeloma Working Group criteria (IMWG), R ISS stage II or, III; or * Histologically confirmed diagnosis of B-cell NHL, Stage III or above (IV, Progressive/refractory, or recurrent/relapsed stage) according to the Lugano Classification. Participants with HGG with IgG levels \<5g/L at screening.

Exclusion criteria

* Participants with documented history of allogeneic hematopoietic stem cell transplant within 6 months before Screening Visit. * Participants currently receiving immunoglobulin replacement therapy (IgRT) or have received IgG replacement treatment (i.e., prior immune globulin replacement therapy) within 6 months before the Screening Visit. * Participants with any active infections at the time of Screening Visit. Participants with active secondary malignancies. * Participants with known PID. * Participants with a life expectancy less than 1.5 years. * Participants with clinical evidence of any significant acute or chronic disease that, in the opinion of the investigator, may interfere with successful completion of the trial or place the participant at undue medical risk. * Participants who have had known serious treatment related adverse events to immunoglobulin or any anaphylactic reaction to blood or any blood-derived product. * Participants who have known Selective Immunoglobulin A (IgA) Deficiency (with or without antibodies to IgA) (Note: exclusion is for the specific diagnostic entity. It does not exclude other forms of humoral PI which have decreased IgA in addition to decreased IgG requiring IgG replacement). * Females of childbearing potential who are pregnant, have a positive pregnancy test at Screening Visit (serum human chorionic gonadotropin-based assay), are breastfeeding, or unwilling to practice a highly effective method of contraception (oral, injectable or implanted hormonal methods of contraception, placement of an intrauterine device or intrauterine system, condom or occlusive cap with spermicidal foam/gel/film/cream/suppository, male sterilization, or true abstinence\*) throughout the study. Note: \*True abstinence: When this is in line with the preferred and usual lifestyle of the participant. (Periodic abstinence \[e.g., calendar, ovulation, symptothermal, post-ovulation methods\], declaration of abstinence for the duration of a trial, and withdrawal are not acceptable methods of contraception.) * Participants with severe known kidney disease (as defined by estimated glomerular filtration rate Chronic Kidney Disease Epidemiology Collaboration \[eGFR CKD-EPI\] \<30 mL/min/1.73 m2) as determined by the Principal Investigator. * Participants that have liver enzyme levels (alanine aminotransferase \[ALT\], aspartate aminotransferase \[AST\], gamma-glutamyl transferase \[GGT\], or lactate dehydrogenase \[LDH\]) greater than 3 times the upper limit of normal at the Screening Visit as defined by the testing laboratory. * Participants who have a history (either 1 episode within the year prior to the Screening Visit or 2 previous episodes over a lifetime) of thromboembolic events \[e.g., DVT, PE, ischemic stroke (transient ischemic attack, and any ischemic cerebrovascular accident), myocardial infarction (including unstable angina and ischemic heart disease diagnosed in the last 6 months), retinal artery occlusion, mesenteric ischemia, and peripheral arterial disease (Fontaine III and IV)\]\*.(Fontaine I: asymptomatic. IIa: mild claudication. IIb: moderate to severe claudication. III: ischemia with rest pain. IV: ulceration or gangrene). * Participants who currently have a known hyperviscosity syndrome or hypercoagulable states. * Participants who have clinical signs and symptoms consistent with current hepatitis B virus or hepatitis C virus infection. * Participants with non-controlled arterial hypertension (i.e., SBP \> 160 mmHg and/or DBP \> 100 mmHg), and/or HR \>100 bpm. * Participants have known substance or prescription drug abuse within 12 months before the Screening Visit. * Participants have participated in another clinical trial within 30 days prior to Screening Visit (NOTE: observational studies without investigative treatments \[non-interventional\] and interventional studies to treat CLL, MM, or NHL are permitted). * Participants / caregivers are unwilling to comply with any aspect of the protocol for the duration of the study. * In the opinion of the investigator, participants may have compliance problems with the protocol and the procedures of the protocol.

Design outcomes

Primary

MeasureTime frame
serious bacterial infection (SBI) rate per-participant per year.During treatment (1year) and up to 28 days after the last dose of study treatment or until the intake of any IgRT, other than Gamunex-C, whichever occurs first

Secondary

MeasureTime frame
The number of days on therapeutic antibiotics per participant per yearDuring treatment (1year) and up to 28 days after the last dose of study treatment or until the intake of any IgRT, other than Gamunex-C, whichever occurs first.
Number of hospitalizations due to any infectionsDuring treatment (1year) and up to 28 days after the last dose of study treatment or until the intake of any IgRT, other than Gamunex-C, whichever occurs first.
Total duration of hospitalizations due to any infectionsDuring treatment (1year) and up to 28 days after the last dose of study treatment or until the intake of any IgRT, other than Gamunex-C, whichever occurs first.
The rate of hospitalizations per participant per year due to any infections.During treatment (1year) and up to 28 days after the last dose of study treatment or until the intake of any IgRT, other than Gamunex-C, whichever occurs first.
Rate of infections requiring IV administration of an antibiotic or antiviral/anti infective per-participant per year.During treatment (1year) and up to 28 days after the last dose of study treatment or until the intake of any IgRT, other than Gamunex-C, whichever occurs first.
Time to first onset of SBIDuring treatment (1year) and up to 28 days after the last dose of study treatment or until the intake of any IgRT, other than Gamunex-C, whichever occurs first
Time to first onset of severe bacterial infectionDuring treatment (1year) and up to 28 days after the last dose of study treatment or until the intake of any IgRT, other than Gamunex-C, whichever occurs first.
Proportion of participants who experience at least one severe bacterial infection.During treatment (1year) and up to 28 days after the last dose of study treatment or until the intake of any IgRT, other than Gamunex-C, whichever occurs first.
The rate of severe bacterial infections per participant per year.During treatment (1year) and up to 28 days after the last dose of study treatment or until the intake of any IgRT, other than Gamunex-C, whichever occurs first.
The rate of all bacterial infections per participant per year.During treatment (1year) and up to 28 days after the last dose of study treatment or until the intake of any IgRT, other than Gamunex-C, whichever occurs first.
Time to first onset of non-severe bacterial infection.During treatment (1year) and up to 28 days after the last dose of study treatment or until the intake of any IgRT, other than Gamunex-C, whichever occurs first.
The proportion of participants who experience at least one bacterial infection.During treatment (1year) and up to 28 days after the last dose of study treatment or until the intake of any IgRT, other than Gamunex-C, whichever occurs first.
The rate of infections of any kind (bacterial/viral/fungal, irrespective of severity or seriousness) per participant per year.During treatment (1year) and up to 28 days after the last dose of study treatment or until the intake of any IgRT, other than Gamunex-C, whichever occurs first.
Time to first onset of any kind of infection (bacterial/viral/fungal).During treatment (1year) and up to 28 days after the last dose of study treatment or until the intake of any IgRT, other than Gamunex-C, whichever occurs first.
The proportion of participants who experience a validated infectionDuring treatment (1year) and up to 28 days after the last dose of study treatment or until the intake of any IgRT, other than Gamunex-C, whichever occurs first.
The rate of validated (as defined above) infections per participant per yearDuring treatment (1year) and up to 28 days after the last dose of study treatment or until the intake of any IgRT, other than Gamunex-C, whichever occurs first.
Number of days on prophylactic antibiotics (including oral, parenteral, oral plus parenteral).During treatment (1year) and up to 28 days after the last dose of study treatment or until the intake of any IgRT, other than Gamunex-C, whichever occurs first.
Number of days on therapeutic antibiotics (including oral, parenteral, oral plus parenteral).During treatment (1year) and up to 28 days after the last dose of study treatment or until the intake of any IgRT, other than Gamunex-C, whichever occurs first.
The number of days on prophylactic antibiotics per participant per yearDuring treatment (1year) and up to 28 days after the last dose of study treatment or until the intake of any IgRT, other than Gamunex-C, whichever occurs first.

Countries

United States

Contacts

CONTACTJudith Wessels-Kranz
judith.wesselskranz@external.grifols.com,+49 6103 801-6395,
CONTACTMarina Acosta Enslen
marina.acostaenslen@grifols.com+1 (919) 813 9725

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: May 13, 2026