ClinicalTrials.gg
Enrolling by invitationNCT00900497Updated May 1, 2026

A Study Using White Blood Cells From Healthy Donors To Treat Solid Cancers

A Phase 1/2 interventional study of White Blood Cells/Granulocytes in Solid Tumors, sponsored by Dipnarine Maharaj. Enrolling by invitation at 1 site in United States. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-05-01.

Sponsored by Dipnarine Maharaj · Phase 1/2, Interventional, and Treatment

Phase
Phase 1/2
Study type
Interventional
Enrollment
29
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 454 studies in Graft vs Host Disease with a site in United States — 50 open to participants now, 71 under way, 2 of them phase 3. Graft vs Host Disease · United States.

Planned enrollment
209th of 389
29 · median 30
Started
2009
with 13 others
Phase 1/2
55 of 454
5 open now
Primary completion
2029-12
later than 55 of 66 live
Registered
188th of 454
by date

Among the 454 studies in Graft vs Host Disease with a site in United States, this one is the 209th largest by planned enrollment of the 389 interventional ones that give a count, is one of 14 that started in 2009, is one of 55 in phase 1/2, reaches primary completion later than 55 of the 66 other live ones, and was the 188th registered.

Graft vs Host Disease

804 studies on the registry are indexed under Graft vs Host Disease; 149 are open to participants now.

Browse Graft vs Host Disease studies →

Open to participants now

50 of the 454 studies in Graft vs Host Disease with a site in United States are open now. Recruiting first, the newest first:

45 more — sign in →

All 50 open studies →

A study can be open while its sites in United States have not opened yet or have stopped. Only those recruiting at a site in United States →

Who these studies take

Of the 103 Graft vs Host Disease studies recruiting now, 51 (50%) set no upper age limit and 42 (41%) stop at 75 or younger; 42 take children under 18; 9 take healthy volunteers.

This study: 18 Years and older · all sexes · healthy volunteers too.

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02

Study summary

Background \& Rationale:

About 75% of US population living today will not die of cancer. There has been a recent report of a colony of cancer-resistant mice developed from a single male mouse that unexpectedly survived challenges of lethal cancer cell injections. In these so-called spontaneous regression/complete resistant (SR/CR) mice, cancer cells are killed by rapid infiltration of leukocytes, mainly of innate immunity. This highly effective natural cancer immunity is inherited and mediated entirely by white blood cells. Moreover, this cancer resistance can be transferred to wild type mice through the transfer of various immune cell types including granulocytes. The infusion of white blood cells, particularly cells of innate immunity, is a viable anticancer therapy in humans as well. This proposed trial will test whether white blood cell infusions from healthy unrelated donors can be used to treat cancer. The trial is designed to determine whether responses can be seen in cancer patients after infusion of HLA-mismatched white cells from healthy donors. It is important that the donors and recipients be unrelated and HLA-mismatched to avoid the possibility of transfusion-related Graft vs. Host Disease. The white blood cells from the healthy donors are being collected via apheresis following granulocyte mobilization with dexamethasone and filgrastim. The investigators will refer to the white blood cells as 'granulocytes' because 75-90% of the white blood cells collected through the apheresis will consist of granulocytes. The dose of at least 2x10 to the11th will be given from 4-5 donors at a rate of no more than one donor per day for each recipient. There will only be one infusion per day and no more than 5 infusions per week. Thus, a typical treatment in the study would span 1-2 weeks. After each infusion, the patients will be monitored carefully for possible adverse events. If adverse events occur at any time point during or after individual infusion, the treatment can be stopped until the adverse events can be managed. The daily dose of each infusion is a frequently used level that has a long safety record. The trial will observe the subject's cancer for 3 months after the granulocyte infusions are completed. Response at 90 days will be based on comparison of tumor measurements at baseline. The trial has 3 major endpoints: dose response and tolerance, safety, and efficacy.

Read the detailed description

Up to 29 Subjects with metastatic, non-hematological cancer can be entered. Potentially hundreds of healthy Donor-participants will be recruited. A Donor Registry will be built to store ABO/Rh-specific donors; these donors will be tested for HLA-specific genotyping as well as fully tested for infectious diseases.

Each patient will be receiving granulocytes from approximately 4 to 6 donors. Each donor will be HLA-mismatched to avoid engraftment of the granulocytes and any transfusion-related GVHD. These infusions will take place over a 1 to 2 week period, the timing of which will be dependent on both the subject's tolerance and the availability of the donors.

Subject Response Assessment:

For all patients not demonstrating disease progression, response status will be evaluated between Days +90 to +100 after the last infusion. Day+1 is the first day of white cell infusion. All measurable lesions (lesions that can be accurately measured in at least one dimension [longest diameter to be recorded] as ≥20 mm with conventional techniques or as ≥10 mm with spiral CT scan) up to a maximum of 10 lesions representative of all involved organs should be identified as target lesions and will be recorded and measured at baseline. Target lesions should be selected on the basis of their size (lesions with the longest diameter) and their suitability for accurate repetitive measurements (either by imaging techniques or clinically). A sum of the longest diameter (LD) for all target lesions will be calculated and reported as the baseline sum LD. The baseline sum LD will be used as reference to further characterize the objective tumor response of the measurable dimension of the disease. The criteria for response, progression, and relapse are as follows.

  • Complete Response: Disappearance of all target lesions.
  • Partial Response (PR): At least a 30% decrease in the sum of the longest diameter (LD) of target lesions taking as reference the baseline sum LD.
  • Progression (PD): At least a 20% increase in the sum of the LD of target lesions taking as references the smallest sum LD recorded since the treatment started or the appearance of one or more new lesions.
  • Stable Disease (SD): Neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for PD taking as references the smallest sum LD since the treatment started. Patients having a documented response with no reconfirmation of the response will be listed with stable disease.
03

Conditions studied

  • Solid Tumors

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Keywords

  • granulocytes
  • Graft-vs-Host-Disease
04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes

Eligibility criteria

Inclusion Criteria for Subjects:

  • Must have signed Subject form
  • Documentation of Disease: All patients must have or cytologically confirmed non-hematological that is or unresectable and for which standard curative or palliative measures do not exist or are no longer effective.
  • : Lesions that can be accurately measured in at least one dimension (longest diameter recorded) as ³20 mm with conventional technique or as ³10 mm with spiral CT scan.
  • of at least 4 months as judged by the PI at the time of consent
  • Performance status of ≤2 on the scale (see Appendix I).
  • ≥ 4 weeks since prior medical therapy, radiation therapy, and surgery
  • Adequate organ function, such as absolute neutrophils ≥1,500/µl, transfusion independent,
  • platelet count ≥100,000/µl, serum ≤2 mg/dl, /ALT less than 3x and serum creatinine ≤2 mg/dl.

Exclusion criteria:

  • Uncontrolled diabetes mellitus, significant cardiac disease, e.g. recent myocardial infarction ≥ within 30 days, or active serious infection.
  • infection and no recent use (within 30 days) of agents other than .
  • Pregnant or nursing women.
  • Men or Women of reproductive age who are not using an effective means of .
  • Women of who have a positive serum pregnancy test prior to treatment.
  • HLA Class I \& II antibodies.
  • Neutrophil antibody test.
  • Prior history of stem cell transplantation.
  • Evidence of brain tumors or metastases.
  • Prior history of fludarabine therapy.

Inclusion Criteria for Granulocyte Donors:

  • Must have signed Donor-participant Informed Consent Form
  • Must be a healthy, eligible blood donor who has completed Full-Length Universal Donor History Questionnaire version 1.2
  • Must be able to donate granulocytes and be willing to undergo granulocyte apheresis
  • Must have an HLA profile (A, B, DR) with results that ensure donated granulocytes will be mismatched with the recipient
  • Must have CMV negative or positive sero-testing completed; only seronegative donors are accepted for a seronegative recipient
  • Must have compatible ABO and RH typing with the subject
  • Must be negative for HLA Class I \& II antibodies

Exclusion criteria:

  • Positive Neutrophil antibody test
  • Positive infectious disease workup within 30 days of apheresis / donation.
  • Positive known cardiac illness that could cause a potential risk associated with leukapheresis.
  • Genetic relationship to the recipient
Terms in these criteria, in plain language(16)

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.

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.

Metastases

Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.

Measurable disease

The amount of disease can be tracked with a defined measurement, so the study can see whether it shrinks or grows. It might be a tumour measured on a scan or, in some blood cancers such as myeloma, a marker measured in blood or urine.

The criteria or the study team say which measurement counts — having no tumour visible on a scan does not by itself rule you out.

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.

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.

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.

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.

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.

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.

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.

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.

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.

05

Study design

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

Study arms

  • Experimental
    White Blood Cells/Granulocytes

    Fresh, non-irradiated granulocytes from ABO-Rh compatible, HLA-mismatched donors

    Biological: White Blood Cells/Granulocytes

Interventions

  • BiologicalWhite Blood Cells/Granulocytes

    Drug page: Granulocyte

    Granulocytes collected by apheresis, cross-matched for ABO-Rh and common antibodies, HLA-mismatched to avoid engraftment

06

What researchers measure

Primary outcomes

  1. The trial will observe the subject's cancer status for 3 months after the granulocyte infusions are completed. Response at 90 days will be based on comparison of tumor measurements at baseline.

    Time frame: 90 to 100 days post treatment

Secondary outcomes

  1. The trial will evaluate the safety and dose tolerance of the transfusion of non-irradiated granulocytes (approximately 4 to 6 donors to reach a level of 2 x 10 to the 11th cells) from HLA-mismatched donors

    Time frame: 1 to 2 weeks treatment and 30 days post treatment

07

Study locations

1 site
  • South Florida Bone Marrow / Stem Cell Transplant Institute
    Boynton Beach, Florida 33437, United States
08

Timeline

Tracking since Sep 25, 2026
Not marked actual or estimatedDates not marked actual or estimated

The record gives a start of Apr 2009, a primary completion of Dec 2029 and a completion of Dec 2030. It does not say whether these dates are actual or estimated.

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

Registered
May 11, 2009
First posted
May 12, 2009
Start
Apr 2009
Primary completionEst.
Dec 2029
CompletionEst.
Dec 2030
Last update
May 1, 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 May 1, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT00900497
Lead sponsor
Dipnarine Maharaj
Responsible party
Dipnarine Maharaj (Medical Director, South Florida Bone Marrow/Stem Cell Transplant Institute) — Sponsor-investigator
First posted
May 12, 2009
Start date
Apr 2009
Primary completion
Dec 2029 (estimated)
Completion
Dec 2030 (estimated)
Last update
May 1, 2026

Study contacts

Dipnarine Maharaj, MD
principal investigator · Medical Director, South Florida Bone Marrow / Stem Cell Transplant Institute

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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