ClinicalTrials.gg
TerminatedNCT03286114Updated May 11, 2025Results posted

Augmentation of the Graft vs. Leukemia Effect Via Checkpoint Blockade With Pembrolizumab

A Phase 1 interventional study of Pembrolizumab in Myelodysplastic Syndromes, Acute Myeloid Leukemia and Acute Lymphoblastic Leukemia, sponsored by University of Michigan Rogel Cancer Center. Terminated at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2025-05-11.

Sponsored by University of Michigan Rogel Cancer Center · Phase 1, Interventional, and Treatment

Why this study was terminated
Lack of patient population

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Phase
Phase 1
Study type
Interventional
Enrollment
16
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-14

Among 1,363 studies in Myelodysplastic Syndromes with a site in United States — 174 open to participants now, 279 under way, 17 of them phase 3. Myelodysplastic Syndromes · United States.

Enrollment
877th of 1,189
16 · median 35
Started
2017
with 58 others
Phase 1
384 of 1,363
56 open now
Registered
975th of 1,363
by date

Among the 1,363 studies in Myelodysplastic Syndromes with a site in United States, this one is the 877th largest by enrollment of the 1,189 interventional ones that give a count, is one of 59 that started in 2017, is one of 384 in phase 1, and was the 975th registered.

Myelodysplastic Syndromes

1,997 studies on the registry are indexed under Myelodysplastic Syndromes; 324 are open to participants now.

Browse Myelodysplastic Syndromes studies →

Open to participants now

174 of the 1,363 studies in Myelodysplastic Syndromes with a site in United States are open now. Recruiting first, the newest first:

169 more — sign in →

All 174 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 264 Myelodysplastic Syndromes studies recruiting now, 167 (63%) set no upper age limit and 70 (27%) stop at 75 or younger; 57 take children under 18; 17 take healthy volunteers.

This study: 18 Years and older · all sexes · no healthy volunteers.

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02

Study summary

This is a single arm, open-label, Phase 1b study of pembrolizumab for patients with myelodysplastic syndrome (MDS), acute myeloid leukemia (AML), and acute lymphoblastic leukemia (ALL) whose disease has relapsed after receiving allogeneic hematopoetic stem cell transplant.

03

Conditions studied

  • Myelodysplastic Syndromes
  • Acute Myeloid Leukemia
  • Acute Lymphoblastic Leukemia
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

  • Acute Myeloid Leukemia (AML), Acute Lymphoblastic Leukemia (ALL) or Myelodysplastic Syndrome (MDS) in confirmed relapse
  • Confirmation of ''
  • Patient may not have received definitive salvage chemotherapy for their post-transplant relapse within the past 21 days.
  • Be willing and able to provide written /assent for the trial
  • Be ≥ 18 years of age on day of signing informed consent
  • Be willing to provide tissue from bone marrow
  • Have a performance status of 0, to 1 on the Performance Scale. Eastern Cooperative Oncology Group Performance Status: an attempt to quantify cancer patients' general well-being and activities of daily life. The score ranges from 0 to 5 where 0 is asymptomatic and 5 is death.
  • Demonstrate adequate organ function
  • Female subject of should have a negative urine or serum pregnancy within 72 hours prior to receiving the first dose of study medication.
  • Female subjects of childbearing potential must be willing to use an adequate method of
  • Male subjects of childbearing potential must agree to use an adequate method of contraception

Exclusion criteria

Exclusion Criteria:

  • Has had relapse prior to primary neutrophil engraftment or ≤21 days post HCT.
  • Has received >1 or other treatment directed towards post-transplant relapse prior to study entry
  • Rapidly progressive relapse requiring urgent chemotherapy as determined by treating physician
  • Is currently participating and receiving study therapy of an agent and received study therapy within 2 weeks of the first dose of treatment.
  • Has a diagnosis of active GvHD (≥ Grade I)
  • Receiving systemic therapy of > 10mg prednisone daily or equivalent*
  • Has received GM-CSF within 14 days of first dose of pembrolizumab
  • Has a known history of active TB (Bacillus Tuberculosis) to pembrolizumab or any of its
  • Has had a prior anti-cancer monoclonal antibody (mAb) within 4 weeks prior to study Day 1 or who has not recovered from adverse events
  • Has had prior chemotherapy within 21 days or radiation therapy within 14 days prior to study Day 1 or who has not recovered from adverse events
  • Has a known additional (secondary) that is progressing or requires active treatment
  • Has known or suspected active central nervous system (CNS) and/or carcinomatous meningitis
  • Has a history of (non-infectious) pneumonitis that required steroids, or current pneumonitis
  • Has a history or current evidence of any condition, therapy, or laboratory abnormality that might confound the results of the trial, interfere with the subject's participation for the full duration of the trial, or is not in the best interest of the subject to participate, in the opinion of the treating investigator.
  • Has known psychiatric or substance abuse disorders that would interfere with cooperation with the requirements of the trial
  • Is pregnant or breastfeeding, or expecting to conceive or father children within the projected duration of the trial
  • Has received prior therapy with an , anti-PD-L1, or anti-PD-L2 agent
  • Has a known history of (HIV)
  • Has known active or
  • Has received a within 30 days of planned start of study therapy
Terms in these criteria, in plain language(18)

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.

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.

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.

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.

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.

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.

Line of therapy

A line of therapy is one course of treatment, which may combine several drugs. First-line is the first course given; second-line follows when that stops working or is not tolerated.

“Two prior lines” means two courses that count separately under the study’s rules — not simply two drugs. Ask the study team if you are unsure how yours are counted.

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.

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.

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.

Excipients

The other ingredients in a medicine besides the active drug, such as fillers, colours or preservatives.

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.

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.

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.

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.

Live vaccines

Vaccines made with a weakened form of the germ, such as measles–mumps–rubella (MMR), chickenpox and yellow fever. They can be risky when the immune system is weakened. Flu injections are not live; the nasal flu spray is.

05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
16 participants (actual)

Study arms

  • Experimental
    Pembrolizumab

    Drug: Pembrolizumab

Interventions

06

What researchers measure

Primary outcomes

  1. The Number of Patients That Demonstrate Clinical Benefit From Treatment

    This study will assess if the study drug is promising for further study. The study drug will be considered promising if at least 4 patients receive a clinical benefit or if any complete response is seen. Clinical benefit is defined as either stable disease, partial remission or complete remission to treatment. Complete remission (CR) will be defined as achieving a morphologic leukemia free state by achieving all of the following criteria: bone marrow myeloblasts \< 5% by morphologic assessment; AND absence of circulating blasts with phenotypic or morphologic features of leukemia (e.g. Auer rods) AND no evidence of extramedulary disease. Partial remission (PR) will be defined as a ≥ 50% reduction in bone marrow blast percentage to 5-25% or marrow blasts \< 5% with persistent Auer rods, flow cytometric or cytogenetic disease. SD will be defined as ≤ 5% increase in blasts or decreased blast percentage in the bone marrow that does not meet the criteria for PR.

    Time frame: Day 77

  2. The Number of Patients That Respond to Treatment

    This study will assess the number of patients that respond to treatment by overall response rate (ORR). ORR is defined as the number of patients will complete remission and partial remission. Complete remission (CR) will be defined as achieving a morphologic leukemia free state by achieving all of the following criteria: bone marrow myeloblasts \< 5% by morphologic assessment; AND absence of circulating blasts with phenotypic or morphologic features of leukemia (e.g. Auer rods) AND no evidence of extramedulary disease. Partial remission (PR) will be defined as a ≥ 50% reduction in bone marrow blast percentage to 5-25% or marrow blasts \< 5% with persistent Auer rods, flow cytometric or cytogenetic disease.

    Time frame: Day 77

  3. Graft Versus Host Disease (GvHD) or Other Significant Immune Mediated Toxicities

    The number of patients that experience Graft Versus Host Disease (GvHD) or other significant immune mediated toxicities

    Time frame: 30 Days Post Treatment

Secondary outcomes

  1. Overall Survival

    The number of patients alive at 1 year

    Time frame: 1 Year

  2. Event- Free Survival

    The number of patients alive at 1 year without disease

    Time frame: 1 Year

07

Results

Posted May 11, 2025

Participant flow

Participant flow — Overall Study
MilestonePembrolizumab
Started16
Completed7
Not completed9
Withdrew: Adverse event6
Withdrew: Death3

Outcome measures

PrimaryThe Number of Patients That Demonstrate Clinical Benefit From Treatment

This study will assess if the study drug is promising for further study. The study drug will be considered promising if at least 4 patients receive a clinical benefit or if any complete response is seen. Clinical benefit is defined as either stable disease, partial remission or complete remission to treatment. Complete remission (CR) will be defined as achieving a morphologic leukemia free state by achieving all of the following criteria: bone marrow myeloblasts \< 5% by morphologic assessment; AND absence of circulating blasts with phenotypic or morphologic features of leukemia (e.g. Auer rods) AND no evidence of extramedulary disease. Partial remission (PR) will be defined as a ≥ 50% reduction in bone marrow blast percentage to 5-25% or marrow blasts \< 5% with persistent Auer rods, flow cytometric or cytogenetic disease. SD will be defined as ≤ 5% increase in blasts or decreased blast percentage in the bone marrow that does not meet the criteria for PR.

Time frame:
Day 77
Reported as:
Count of participants · Participants
The Number of Patients That Demonstrate Clinical Benefit From Treatment
ParticipantsPembrolizumab
The Number of Patients That Demonstrate Clinical Benefit From Treatment6
PrimaryThe Number of Patients That Respond to Treatment

This study will assess the number of patients that respond to treatment by overall response rate (ORR). ORR is defined as the number of patients will complete remission and partial remission. Complete remission (CR) will be defined as achieving a morphologic leukemia free state by achieving all of the following criteria: bone marrow myeloblasts \< 5% by morphologic assessment; AND absence of circulating blasts with phenotypic or morphologic features of leukemia (e.g. Auer rods) AND no evidence of extramedulary disease. Partial remission (PR) will be defined as a ≥ 50% reduction in bone marrow blast percentage to 5-25% or marrow blasts \< 5% with persistent Auer rods, flow cytometric or cytogenetic disease.

Time frame:
Day 77
Reported as:
Count of participants · Participants
The Number of Patients That Respond to Treatment
ParticipantsPembrolizumab
The Number of Patients That Respond to Treatment3
PrimaryGraft Versus Host Disease (GvHD) or Other Significant Immune Mediated Toxicities

The number of patients that experience Graft Versus Host Disease (GvHD) or other significant immune mediated toxicities

Time frame:
30 Days Post Treatment
Reported as:
Count of participants · Participants
Graft Versus Host Disease (GvHD) or Other Significant Immune Mediated Toxicities
ParticipantsPembrolizumab
GVHD9
mmune-related SAEs2
SecondaryOverall Survival

The number of patients alive at 1 year

Time frame:
1 Year
Reported as:
Number · percentage of participants
Overall Survival
percentage of participantsPembrolizumab
Overall Survival37.5 (15.4 to 59.8)
SecondaryEvent- Free Survival

The number of patients alive at 1 year without disease

Time frame:
1 Year
Reported as:
Number · percentage of participants
Event- Free Survival
percentage of participantsPembrolizumab
Event- Free Survival31.3 (11.1 to 53.7)

Adverse events

Collected over All adverse event data (serious and non-serious) collected from the time of the initial study treatment administration through 30 days after the last dose of study treatment. An average of 3 months.. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Pembrolizumab12/16 (75%)16/16 (100%)6/16 (37.5%)
Most frequent serious events
Showing 10 of 25
Most frequent serious events
EventPembrolizumab
Febrile neutropeniaBlood and lymphatic system disorders7/16
Immune system disorders - Other, specifyImmune system disorders5/16
Rash maculo-papularSkin and subcutaneous tissue disorders3/16
Immune system disorders - Other, specifyImmune system disorders3/16
Blood bilirubin increasedInvestigations2/16
FeverGeneral disorders2/16
Lung infectionInfections and infestations2/16
SepsisInfections and infestations2/16
Acute kidney injuryRenal and urinary disorders1/16
Alanine aminotransferase increasedInvestigations1/16
Most frequent other events
Most frequent other events
EventPembrolizumab
Alanine aminotransferase increasedInvestigations2/16
Aspartate aminotransferase increasedInvestigations2/16
Immune system disorders - Other, specifyImmune system disorders2/16
Blood bilirubin increasedInvestigations1/16
DehydrationMetabolism and nutrition disorders1/16
HyponatremiaInvestigations1/16
Rash maculo-papularSkin and subcutaneous tissue disorders1/16

Baseline characteristics

Age, Categorical
Age, Categorical(Participants)Pembrolizumab
<=18 years0
Between 18 and 65 years12
>=65 years4
Sex: Female, Male
Sex: Female, Male(Participants)Pembrolizumab
Female7
Male9
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)Pembrolizumab
Hispanic or Latino0
Not Hispanic or Latino15
Unknown or Not Reported1
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Pembrolizumab
American Indian or Alaska Native0
Asian0
Native Hawaiian or Other Pacific Islander0
Black or African American0
White15
More than one race0
Unknown or Not Reported1
Region of Enrollment
Region of Enrollment(participants)Pembrolizumab
United States16
08

Study locations

1 site
  • University of Michigan Cancer Center
    Ann Arbor, Michigan 48109, United States
09

References and documents

Publications

  • Magenau JM, Frame DG, Riwes M, Maciejewski J, Anand S, Pawarode A, Perry AM, Geer M, Braun T, Ghosh M, Reddy P. PD-1 inhibition for relapse after allogeneic transplantation in acute myeloid leukemia and myelodysplastic syndrome. Blood Adv. 2025 Aug 12;9(15):3878-3886. doi: 10.1182/bloodadvances.2024015200. PubMed 40198769 ↗

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: No

10

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Dec 2017 to primary completion in Oct 2020, 34 months.

Results were first posted in May 2025, 4 years 6 months after primary completion.

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

Registered
Sep 8, 2017
First posted
Sep 18, 2017
StartActual
Dec 21, 2017
Primary completionActual
Oct 22, 2020
CompletionActual
Apr 28, 2021
Results first posted
May 11, 2025
Last update
May 11, 2025
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 11, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT03286114
Responsible party
Sponsor
First posted
Sep 18, 2017
Start date
Dec 21, 2017
Primary completion
Oct 22, 2020
Completion
Apr 28, 2021
Results posted
May 11, 2025
Last update
May 11, 2025

Study contacts

John Magenau, M.D.
principal investigator · University of Michigan Rogel Cancer Center

Oversight

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

Not currently enrolling

This study is terminated, as verified in Apr 2025. You cannot join it, but the record below documents what was studied.

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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.

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Studies of the drug tested here: Pembrolizumab

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