ClinicalTrials.gg
RecruitingNCT05891821Updated Jun 8, 2026

Assessment of the Safety and Efficacy of Balstilimab for the Treatment of Relapsed/Refractory Lymphomas (IMMONC0001)

A Phase 2 interventional study of Balstilimab in Lymphoma, sponsored by Immune Oncology Research Institute. Recruiting at 1 site in Armenia. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-06-08.

Sponsored by Immune Oncology Research Institute · Phase 2, Interventional, and Treatment

From the registry’s dates

  • Started Sep 2023; still recruiting 3 years 2 months later.
Phase
Phase 2
Study type
Interventional
Enrollment
20
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Study summary

The goal of this study is to see if the drug balstilimab is safe and effective in participants with relapsed/refractory lymphomas.

Participants will receive balstilimab every 3 weeks and their outcomes will be assessed periodically.

Read the detailed description

This is a single-arm, open-label phase 2 study to evaluate the safety and efficacy of single agent balstilimab in participants with relapsed/refractory lymphoma. The study will enroll participants with relapsed/refractory classical Hodgkin lymphoma or primary mediastinal B-cell lymphoma. The participants will receive balstilimab (BAL) 300 mg IV every 3 weeks. BAL infusions will be administered within 30 minutes (± 5 min) using an infusion pump.

The total estimated maximum time of study participation for each patient is approximately 49 months across 3 periods:

  • Screening Period: approximately 28 days
  • Treatment Period: up to 24 months, or until any criterion for stopping the study drug or withdrawal from the study occurs
  • Follow-up Period: up to 24 months from last dose of study treatment for every patient who is alive

Study Duration

  • Recruitment: 2 years
  • Treatment: 2 years
  • Follow-up: 2 years
02

Conditions studied

  • Lymphoma

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03

In context

Lymphoma

3,018 studies on the registry are indexed under Lymphoma; 434 are open to participants now.

This study's planned enrollment of 20 is below the median of 43 across 2,319 interventional studies indexed under Lymphoma.

Browse Lymphoma studies →

Lead sponsor

Immune Oncology Research Institute is the lead sponsor of 6 studies on the registry; 4 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Voluntarily agree to participate by giving written
  2. ≥ 18 years of age
  3. Have a confirmed diagnosis of a classical Hodgkin lymphoma (cHL) or primary mediastinal B-cell lymphoma (PMBCL) for which no standard therapy is available or standard therapy has failed or the patient does not have access to it.
  4. Has a of at least 3 months and an performance status of ≤1 as determined by study Investigator
  5. Patients must have sufficient and adequate formalin-fixed tumor tissue sample available that is not older than 3 years; otherwise, a fresh is required. Archival tissue or fresh biopsy must be from a site not previously irradiated
  6. Has adequate organ function defined as the following laboratory values within 7 days of C1D1:

    1. Neutrophils ≥ 1500/μL (Must be stable and off any growth factor within 4 weeks of first study treatment administration)
    2. ≥ 75 × 103/μL (transfusion to achieve this level is not permitted within 2 weeks of first study treatment administration)
    3. ≥ 8.0 g/dL (transfusion to achieve this level is not permitted within 2 weeks of first study treatment administration)
    4. ≥ 30 mL/min as measured or calculated per local institutional standards
    5. /ALT ≤ 3 × (ULN)
    6. Total ≤ 1.5 × ULN (except patients with Gilbert syndrome who must have a total bilirubin level of ≤ 3.0 × ULN)
  7. Women of (WOCP) must have a negative serum pregnancy test at Screening (within 7 days before first dose of study drug). Non-childbearing potential is defined as (by other than medical reasons):

    1. ≥ 50 years of age and has not menstruated for greater than 1 year
    2. Whose status is post hysterectomy, bilateral oophorectomy, or tubal ligation
    3. WOCP must be willing to use highly effective methods of (defined in the informed consent form [ICF]) throughout the study, starting with the Screening Visit through 90 days after the last dose of study drug Note: Abstinence is acceptable if this is the established and preferred contraception for the patient.
  8. Male patients with a female partner(s) of childbearing potential must agree to use highly effective contraceptive measures throughout the study starting with the screening visit through 90 days after the last dose of study treatment is received. Males with pregnant partners must agree to use a condom; no additional method of contraception is required for the pregnant partner.
  9. Is willing and able to comply with the requirements of the protocol

Exclusion criteria

Exclusion Criteria:

  1. Has an inadequate period of time prior to first dose of study treatment that is defined as:

    1. Received systemic cytotoxic chemotherapy within 3 weeks before initiation of study treatment
    2. Received biological therapy or therapy within 4 weeks or 5 circulating halve-lives, whichever is shorter
    3. Received small molecule/tyrosine kinase inhibitors within 2 weeks or 5 circulating half-lives, whichever is shorter
    4. Received radiation therapy within 3 weeks before initiation of study treatment, except for palliative radiation therapy, which can be received 2 weeks prior to initiation of study treatment
    5. Had major surgery within 4 weeks before initiation of study treatment
  2. Has gone through disease progression after receiving prior therapy with:

    a. Any antibody/drug targeting T-cell co-regulatory proteins (immune checkpoints) such as and anti-PD-L1 antibodies

  3. Has persisting AEs related to prior immunotherapy of v5.0 Grade ≥ 2 severity.
  4. Is expected to require any other form of systemic or localized antineoplastic therapy while on study (including maintenance therapy with another agent, radiation therapy, and/or surgical resection)
  5. Has known allergy or to any component of balstilimab, any history of anaphylaxis, or uncontrolled asthma
  6. Has active or history of disease that requires systemic treatment within 2 years of the start of study drug (ie, with use of disease-modifying agents, , or drugs) Note: Patients with autoimmune conditions requiring hormone replacement therapy or topical treatments are eligible.
  7. Patients with a condition requiring systemic treatment with either corticosteroids (> 10 mg daily prednisone equivalent) within 14 days or another immunosuppressive medication within 30 days of the first dose of study treatment. Inhaled or topical steroids, and adrenal replacement steroid doses (≤ 10 mg daily prednisone equivalent) are permitted in the absence of active autoimmune disease.
  8. Has had an allogeneic tissue/solid organ transplant
  9. (i.e., active) cardiovascular disease: cerebral vascular accident/stroke or myocardial infarction within 6 months of enrollment, unstable angina, congestive heart failure ( class ≥ III), or serious uncontrolled cardiac arrhythmia requiring medication.

    a. (QTc interval corrected using Fridericia's formula) of > 480 ms.

  10. Any evidence of current interstitial lung disease (ILD) or pneumonitis, or prior history of ILD or non-infectious pneumonitis requiring glucocorticoids.
  11. Has known untreated / virus (HBV/HCV) or tuberculosis. Active HBV is defined as a known positive hepatitis B surface antigen result. Active HCV is defined by a known positive hepatitis C antibody result and known quantitative HCV RNA results greater than the lower limits of detection of the assay
  12. Uncontrolled infection with (HIV). Patients on stable highly active antiretroviral therapy with undetectable viral load and normal for at least 6 months prior to study entry are eligible. Serological testing for HIV at screening is not required.
  13. Has other systemic conditions or organ abnormalities that in the opinion of the Investigator may interfere with the conduct and/or interpretation of the current study
  14. Has known psychiatric or substance use disorders that would interfere with cooperation or compromise participation with the requirements of the study
  15. Is legally incapacitated or has limited legal capacity
  16. Is pregnant or breastfeeding
  17. Has received a live/attenuated vaccine within 14 days of first dose of study treatment and other vaccines within 48 hours of first dose of study treatment
  18. Has other co-morbidities that would alter risk-benefit of providing balstilimab (determined by treating physician's assessment)
  19. Is receiving other therapy that would alter risk-benefit of providing balstilimab (determined by treating physician's assessment)
Terms in these criteria, in plain language(28)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Histologically or cytologically confirmed

The diagnosis was confirmed by looking at a sample under a microscope: tissue from a biopsy or surgery (histology), or cells from a fluid or needle sample (cytology).

Your pathology report is the document that shows this.

Relapsed and refractory

Relapsed: the illness came back after treatment had worked. Refractory: it did not respond to treatment, or stopped responding while still on it.

Life expectancy

The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.

ECOG performance status

A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.

0
Fully active, no restrictions.
1
Limited in strenuous activity, but walking and able to do light work, such as housework or office work.
2
Walking and able to look after yourself, but unable to work; up and about more than half of waking hours.
3
Able to look after yourself only in part; in bed or a chair more than half of waking hours.
4
Unable to look after yourself at all; in bed or a chair all day.

Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.

Biopsy and archival tissue

A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.

Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.

Platelets

Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.

Hemoglobin (Hb)

The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).

Creatinine clearance (CrCl)

How quickly the kidneys clear creatinine, a waste product, from the blood. A study may estimate it from a blood test with age, weight and sex (often by the Cockcroft–Gault formula), or measure it using blood and urine collected over a set time. Given in mL/min; higher is better.

ALT and AST (liver enzymes)

Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.

Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.

ULN (upper limit of normal)

The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.

“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.

Bilirubin

A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.

Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

PD-1, PD-L1 and checkpoint inhibitors

PD-1, PD-L1 and CTLA-4 are proteins that act as brakes on the immune system. Checkpoint inhibitors, such as pembrolizumab or nivolumab, block them so the immune system can attack a cancer.

PD-L1 can also be measured in a tumour sample. Some scores count stained tumour cells only (TPS); others also count certain immune cells (CPS). The study names the score and the minimum it uses.

CTCAE grade

The US National Cancer Institute’s scale of how severe an adverse event is — any unwanted medical event during a study, such as a symptom, an illness or an abnormal test result, whether or not a treatment caused it. Whether it did is judged separately.

1
Mild.
2
Moderate.
3
Severe.
4
Life-threatening.
5
Death due to the event.

“Side effects of earlier treatment resolved to grade 1 or less” means they have settled to mild or gone.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

Autoimmune disease

A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.

Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

Immunosuppression

A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.

Read whether the line is about a condition or about medicines, and which medicines and doses it means.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

NYHA class (heart failure)

The New York Heart Association’s four classes of how much heart failure limits physical activity.

I
No limits: ordinary activity causes no undue tiredness or breathlessness.
II
Slight limits: comfortable at rest, ordinary activity causes symptoms.
III
Marked limits: comfortable at rest, less than ordinary activity causes symptoms.
IV
Symptoms even at rest; any activity makes them worse.

Studies set their own limit — many outside heart failure leave out class III–IV, while heart failure studies may ask for a particular class. Check the class this study names.

QT and QTc

On an ECG, the QT interval is the time the heart’s lower chambers take to activate electrically and recover in each beat. QTc is that time adjusted for heart rate (QTcF by Fridericia’s formula, QTcB by Bazett’s). Some medicines lengthen it, and a long QTc can raise the risk of a dangerous heart rhythm.

The study may name a correction formula and a limit in milliseconds, often around 450–480.

Hepatitis B tests

Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.

Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.

Hepatitis C tests

Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.

After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

CD4 count

The number of CD4 cells, a type of white blood cell, in a given amount of blood. It is used to follow how well the immune system is doing in HIV.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
20 participants (estimated)

Study arms

  • Experimental
    Balstilimab

    300 mg IV every 3 weeks for a maximum of 24 months

    Drug: Balstilimab

Interventions

  • An anti-programmed death (ligand) 1 \[PD-(L)1\] monoclonal antibody

    Also known as: AGEN2034

06

What researchers measure

Primary outcomes

  1. Objective Response Rate (ORR)

    ORR is defined as the percentage of participants with complete response (CR) or partial response (PR) assessed per the Lugano criteria

    Time frame: First dose to up to 27 months

Secondary outcomes

  1. Duration of Response (DOR)

    DOR is defined as time from first observation of response to first observation of documented disease progression per the Lugano criteria or death within 12 weeks of last tumor assessment

    Time frame: First dose to up to 27 months

  2. Disease Control Rate (DCR)

    DCR is defined as the percentage of patients who have achieved complete response, partial response or stable disease per the Lugano criteria

    Time frame: First dose to up to 27 months

  3. Duration of Stable Disease (SD)

    Duration of SD is measured from the start of treatment until the criteria for progression are met, per the Lugano criteria

    Time frame: First dose to up to 27 months

  4. Time to Response

    Time to Response is defined as the time from the first dose date to first observation of confirmed response per the Lugano criteria

    Time frame: First dose to up to 27 months

  5. Progression-Free Survival (PFS) Time

    PFS time is defined as time from first treatment administration to first observation of documented disease progression (or death within 12 weeks after last tumor assessment), per the Lugano criteria

    Time frame: First dose to up to 27 months

  6. Overall Survival (OS) Time

    OS Time is defined as time from start of treatment to death

    Time frame: First dose to up to 48 months

  7. Baseline expression of PD-L1 association with ORR

    Tumor PD-L1 status will be determined and correlation with ORR will be investigated

    Time frame: First dose to up to 48 months

  8. Baseline expression of PD-L1 association with DOR

    Tumor PD-L1 status will be determined and correlation with DOR will be investigated

    Time frame: First dose to up to 48 months

  9. Baseline expression of PD-L1 association with PFS

    Tumor PD-L1 status will be determined and correlation with PFS time will be investigated

    Time frame: First dose to up to 48 months

  10. Baseline expression of PD-L1 association with OS

    Tumor PD-L1 status will be determined and correlation with OS time will be investigated

    Time frame: First dose to up to 48 months

  11. Frequency, severity, and duration of treatment emergent adverse events (TEAEs) and laboratory abnormalities

    TEAEs are reported using the National Cancer Institute - Common Terminology Criteria for Adverse Events (NCI-CTCAE) v5.0

    Time frame: First dose to up to 27 months

07

Study locations

1 of 1 sites recruiting
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Sep 2023 (actual). Primary completion is estimated for Sep 2029, 72 months after the start.

Of 237 non-industry phase 2 interventional studies under Lymphoma, half reached primary completion within 67 months of starting (the median), counting those still running; a quarter within 42 and three quarters within 114. This study's planned 72 months is close to that.

Counting every sponsor, half of 293 studies reached it within 61 months; a quarter within 36 and three quarters within 105.

How these figures are worked out, and which studies are left out of them.

Registered
May 11, 2023
First posted
Jun 7, 2023
StartActual
Sep 1, 2023
Primary completionEst.
Sep 2029
CompletionEst.
Sep 2029
Last update
Jun 8, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jun 8, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05891821
Lead sponsor
Immune Oncology Research Institute
Collaborators
Agenus Inc.
Responsible party
Sponsor
First posted
Jun 7, 2023
Start date
Sep 1, 2023
Primary completion
Sep 2029 (estimated)
Completion
Sep 2029 (estimated)
Last update
Jun 8, 2026

Study contacts

Astghik Voskanyan, MD
Contact
astghikvos@gmail.com
+374 (10) 283800
Samvel Bardakhchyan, MD, PhD
Contact
bardakchyan-5samvel@yandex.ru
+374 (10) 283800
Gevorg Tamamyan, MD, PhD, DSc
study director · Immune Oncology Research Institute
Samvel Bardakhchyan, MD, PhD
study chair · Immune Oncology Research Institute
Astghik Voskanyan, MD
principal investigator · Hematology Center named after Prof. R. Yeolyan

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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