ClinicalTrials.gg
Active, not recruitingNCT03301168Updated Jul 12, 2022

Study of Gene Modified Donor T-cells Following TCR Alpha Beta Positive Depleted Stem Cell Transplant

A Phase 1/2 interventional study of BPX-501 T cells and Rimiducid in Acute Lymphoblastic Leukemia, Leukemia, Acute Myeloid (AML), Child and Lymphoma, Non-Hodgkin, sponsored by Bellicum Pharmaceuticals. Active, not recruiting at 10 sites in United States. Open to participants aged 1 Month to 26 Years. Per ClinicalTrials.gov, last updated 2022-07-12.

Sponsored by Bellicum Pharmaceuticals · Phase 1/2, Interventional, and Treatment

From the registry’s dates

  • Registered 3 years 5 months after the study started (first participant enrolled Apr 2014, registered Sep 2017).
Phase
Phase 1/2
Study type
Interventional
Enrollment
120
Allocation
Not applicable
Ages
1 Month to 26 Years
Sex
All
01

Study summary

This study will evaluate pediatric patients with malignant or non-malignant blood cell disorders who are having a blood stem cell transplant depleted of T cell receptor (TCR) alfa and beta cells that comes from a partially matched family donor. The study will assess whether immune cells, called T cells, from the family donor, that are specially grown in the laboratory and given back to the patient along with the stem cell transplant can help the immune system recover faster after transplant. As a safety measure these T cells have been programmed with a self-destruct switch so that they can be destroyed if they start to react against tissues (graft versus host disease).

Read the detailed description

This is a Phase 1/2 study evaluating the safety and feasibility of BPX-501 T cells infused after partially mismatched, related, TCR alpha beta T cell depleted hematopoietic stem cell transplant (HSCT) in pediatric patients. The purpose of this clinical trial is to determine whether BPX-501 infusion can enhance immune reconstitution in those patients with hematologic disorders, with the potential for reducing the severity and duration severe acute graft versus host disease (GvHD).

The trial will also evaluate the treatment of GvHD by the infusion of dimerizer drug (AP1903/rimiducid) in those subjects who present with GVHD that does not adequately respond to standard of care therapy.

02

Conditions studied

  • Acute Lymphoblastic Leukemia
  • Leukemia, Acute Myeloid (AML), Child
  • Lymphoma, Non-Hodgkin
  • Myelodysplastic Syndromes
  • Primary Immune Deficiency Disorder
  • Osteopetrosis
  • Cytopenia
  • Hemoglobinopathy in Children
  • Anemia, Aplastic

Keywords

  • ALL
  • AML
  • hematologic neoplasms
  • hematologic malignancies
  • primary immune deficiences
  • allogeneic stem cell transplant
03

In context

Precursor Cell Lymphoblastic Leukemia-Lymphoma

2,584 studies on the registry are indexed under Precursor Cell Lymphoblastic Leukemia-Lymphoma; 473 are open to participants now.

This study's planned enrollment of 120 is above the median of 40 across 1,952 interventional studies indexed under Precursor Cell Lymphoblastic Leukemia-Lymphoma.

Browse Precursor Cell Lymphoblastic Leukemia-Lymphoma studies →

Lead sponsor

Bellicum Pharmaceuticals is the lead sponsor of 15 studies on the registry; none are open to participants now.

Of its 7 completed or terminated interventional studies of FDA-regulated products, 5 (71%) have results posted.

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

04

Who can participate

Ages eligible
1 Month to 26 Years
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. Age > 1 month and \< 26 years
  2. > 10 weeks
  3. Subjects deemed eligible for stem cell transplantation.
  4. Subjects with life-threatening hematological (high-risk ALL in 1st CR, ALL in 2nd or subsequent CR, AML in 1st CR, AML in 2nd or subsequent CR, myelodysplastic syndromes, non-Hodgkin lymphomas in 2nd or subsequent CR, other hematologic malignancies eligible for stem cell transplantation per institutional standard);
  5. Non-malignant disorders amenable to cure by an allograft:

    1. primary immune deficiencies,
    2. severe aplastic anemia not responding to immune suppressive therapy,
    3. osteopetrosis,
    4. hemoglobinopathies, (thalassemias, and sickle cell anemia, and Diamond-Blackfan anemia among others)
    5. congenital/hereditary cytopenia, including Fanconi Anemia before any clonal malignant evolution (MDS, AML) Note: Subjects will be eligible if they meet either item 4 OR item 5.
  6. Lack of suitable conventional donor (HLA identical sibling or HLA phenotypically identical relative or 10/10 unrelated donor evaluated using high resolution molecular typing) or presence of rapidly progressive disease not permitting time to identify an unrelated donor
  7. A minimum genotypic identical match of 5/ 10 is required.
  8. The donor and recipient must be identical, as determined by high resolution typing, at least one allele of each of the following genetic loci: HLA-A, HLA-B, HLA-Cw, HLA- DRB1 and HLA-DQB1.
  9. Lansky/ score > 50
  10. Signed written

Exclusion criteria

Exclusion Criteria:

  1. Greater than Grade II acute or chronic extensive GVHD due to a previous allograft at the time of inclusion
  2. Subject receiving an treatment for GVHD treatment due to a previous allograft at the time of inclusion
  3. Dysfunction of liver (/AST > 5 times normal value, or > 3 times normal value), or of renal function ( \< 30 mL / min)
  4. Severe cardiovascular disease (arrhythmias requiring chronic treatment, congestive heart failure or \< 40%)
  5. Current active infectious disease (including positive serology or viral RNA)
  6. Serious concurrent uncontrolled medical disorder
  7. Pregnant or breastfeeding subject
  8. For subjects who have received more than 1 x 10E5 alpha/beta T cells/kg with the graft infusion the clinical trial site must contact the sponsor for approval to be eligible to receive BPX-501 infusion.
Terms in these criteria, in plain language(12)

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.

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.

Allogeneic and autologous transplant

Stem cell (bone marrow) transplants. Allogeneic uses cells from a donor; autologous uses your own cells, collected earlier and given back.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

Karnofsky performance status (KPS)

A 0–100 scale of how well someone can carry out everyday activities. 100 is no complaints and no signs of illness; 70 is able to look after yourself but not to work or keep up normal activity; 50 is needing considerable help and frequent medical care.

Studies often ask for 60 or 70 and above. Your doctor gives the score.

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.

GVHD (graft-versus-host disease)

After a transplant from a donor, the donor’s immune cells attack the recipient’s body, often the skin, gut or liver.

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.

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.

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.

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.

LVEF (left ventricular ejection fraction)

The share of blood the heart’s main pumping chamber (the left ventricle) pushes out with each beat, measured by an echocardiogram (heart ultrasound) or a MUGA scan. About 50–70% is normal.

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.

05

Study design

Phase
Phase 1 / Phase 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
120 participants (estimated)

Study arms

  • Experimental
    BPX-501 T cells and Rimiducid

    TCR alpha beta depleted graft infusion with addback of BPX-501 T cells. Rimiducid: Dimerizer drug administered to subjects who present with Grade I-IV acute GVHD with inadequate response to steroids within 48 hours of treatment or mild to severe chronic GVHD with inadequate response to steroids within 7 days of treatment.

    Biological: BPX-501 T cells · Drug: Rimiducid

Interventions

  • BiologicalBPX-501 T cells

    T cells transduced with CaspaCIDe® safety switch

    Also known as: rivogenlecleucel

  • administered to inactivate BPX-501 cells in the event of GVHD

    Also known as: AP1903

06

What researchers measure

Primary outcomes

  1. Adverse Event

    Demonstrate safety of BPX-501 MTD

    Time frame: Month 24

  2. TRM/NRM

    Assess the cumulative incidence of non-relapse/transplant related mortality

    Time frame: Day 180, Month 12

Secondary outcomes

  1. Disease-free survival

    Disease-free survival rates after transplantation

    Time frame: Month 24

  2. Relapse

    Cumulative incidence of relapse

    Time frame: Month 12

  3. Engraftment

    Cumulative incidence of neutrophil and platelet engraftment, primary \& secondary graft failure

    Time frame: Month 24

  4. GvHD

    Cumulative incidence and severity of acute and chronic GvHD

    Time frame: Month 24

  5. Rimiducid Efficacy

    Time to resolution of acute or chronic GvHD after administration of rimiducid

    Time frame: Month 24

  6. Infection

    Rate of infectious complications

    Time frame: Month 24

  7. Hospitalizations

    Duration of hospitalization and rehospitalization

    Time frame: Month 24

07

Study locations

10 sites
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

Ran from Apr 2014 to primary completion in May 2021, 85 months.

Of 114 phase 1/2 interventional studies under Precursor Cell Lymphoblastic Leukemia-Lymphoma, half reached primary completion within 81 months of starting (the median), counting those still running; a quarter within 56 and three quarters within 119. This study's 85 months is close to that.

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

Registered
Sep 29, 2017
First posted
Oct 4, 2017
StartActual
Apr 2014
Primary completionActual
May 11, 2021
CompletionEst.
May 2034
Last update
Jul 12, 2022
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 Jul 12, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03301168
Lead sponsor
Bellicum Pharmaceuticals
Responsible party
Sponsor
First posted
Oct 4, 2017
Start date
Apr 2014
Primary completion
May 11, 2021
Completion
May 2034 (estimated)
Last update
Jul 12, 2022

Study contacts

Bellicum Pharmaceuticals
study director · Bellicum Pharmaceuticals, Inc.

Oversight

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

Not currently enrolling

This study is active, not recruiting, as verified in May 2022. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Studies of the drugs tested here: Rivogenlecleucel · AP 1903 reagent

Start the discussion