ClinicalTrials.gg
RecruitingNCT07404332Updated May 28, 2026

5-Azacitidine Plus PD-1/PD-L1 Inhibitor With PD-1/PD-L1 Refractory Tumors

A Phase 1 interventional study of 5 Azacytidine and Pembrolizumab in Solid Tumor, Locally Advanced Solid Tumor and Metastatic Tumor, sponsored by Mohammed Milhem. Recruiting at 1 site in United States. Open to participants aged 18 Years to 99 Years. Per ClinicalTrials.gov, last updated 2026-05-28.

Sponsored by Mohammed Milhem · Phase 1, Interventional, and Treatment

From the registry’s dates

  • Started Feb 2026; still recruiting 9 months later.
Phase
Phase 1
Study type
Interventional
Enrollment
35
Allocation
Not applicable
Ages
18 Years to 99 Years
Sex
All
01

Study summary

This is a Phase I study to determine the optimal biological dose (OBD) of 5-Azacitidine in combination with PD-1/PD-L1 inhibitors in patients with tumors refractory to PD-1/PD-L1 inhibitors, for which such treatments have been approved.

Read the detailed description

This is a Phase I study to determine the optimal biological dose (OBD) of 5-Azacitidine in combination with PD-1/PD-L1 inhibitors in patients with tumors refractory to PD-1/PD-L1 inhibitors, for which such treatments have been approved.

This Phase I study will assess 6 doses of 5-Azacitidine (5, 10, 15, 25, 50 and 75 mg/m2) in combination with a PD1/PD-L1 inhibitor. The PD1/PD-L1 inhibitor will be given at standard of care dosing approved by the FDA for this indication.

02

Conditions studied

  • Solid Tumor
  • Locally Advanced Solid Tumor
  • Metastatic Tumor

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03

In context

Neoplasm Metastasis

4,040 studies on the registry are indexed under Neoplasm Metastasis; 886 are open to participants now.

This study's planned enrollment of 35 is below the median of 50 across 3,268 interventional studies indexed under Neoplasm Metastasis.

Browse Neoplasm Metastasis studies →

Lead sponsor

Mohammed Milhem is the lead sponsor of 6 studies on the registry; 1 is open to participants now.

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

04

Who can participate

Ages eligible
18 Years to 99 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

  • Written and voluntary .
  • At least 18 years of age or older.
  • Histologically and radiologically confirmed locally advanced or unresectable solid tumor for which or PD-L1 therapy is already approved by the FDA. Locally advanced is defined as unresectable in the opinion of the treating physician. A repeat is required if previous biopsy tissue is unavailable.
  • At least one (RECIST 1.1) - defined target lesion.
  • (ECOG) performance status of 0 (fully active, able to carry on all pre-disease performance without restriction), 1 (restricted in physically strenuous activity but ambulatory and able to carry out work of a light or sedentary nature, such as light housework or office work), or 2 (ambulatory and capable of self-care but unable to carry out any work activities, spending more than 50% of waking hours up and about).
  • Documented progression on PD1 or PD-L1 inhibitors.
  • Recovery from any acute toxicity associated with prior therapy to grade 1.
  • Renal function (creatinine level within normal institutional limit, or >15 mL/min/1.73 m2 for patients with creatinine levels above institutional normal, calculated using the Cockcroft-Gault formula).
  • Liver function (/ALT \<3.0 X institutional OR \<5 X institutional upper limit of normal in cases of liver metastasis; total ≤ 1.5 times upper limit of normal).
  • Adequate hematological lab values including:

    • (ANC) ≥ 1.0 X 109/L
    • ≥ 100X109/L
    • ≥ 7.0 g/dL
  • Female subjects of and non-sterilized male subjects who intend to be sexually active during the study must agree to use a highly effective method of from time of screening, throughout the whole duration of the drug treatment, and during the 6-month post-treatment .
  • Patients may have previously received a hypomethylating agent, as long as it was not given in combination with ipilimumab.
  • Patients may have previously received ipilimumab but must have or progressed while on therapy.
  • Patients must have adequate archival tissue available for the purpose of downstream methylation status assessment, immunohistochemistry, RNA expression (10 slides at 5µM). If archival tissue is not available, a repeat biopsy is required.

Exclusion criteria

Exclusion Criteria:

  • Patients with a prior or concurrent whose natural history or treatment has the potential to interfere with the safety or efficacy assessment of the regimen.
  • Patients with active, untreated in the central nervous system.
  • Patients who are pregnant or breastfeeding.
  • Patients who have an active infection.
  • Patients with significant hematologic, hepatic, and renal function impairment.
  • Patients who are being treated for any concurrent medical condition requiring the use of systemic or history of long-term use of systemic steroids.
  • Patients who have a history of inflammatory bowel disease or a history of symptomatic disease.
  • Patients who have had any major surgical procedure or significant traumatic injury within 28 days prior to study enrollment.
  • Patients who have received chemotherapy, agents or any investigational drug within 28 days prior to starting the study drugs.
  • Patients who have any underlying medical condition which, in the treating physician's opinion, will make the administration of study drugs hazardous or obscure the interpretation of adverse events.
Terms in these criteria, in plain language(22)

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.

Metastases

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

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.

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.

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.

RECIST

The standard rules for measuring tumours on CT or MRI scans, to tell whether a cancer is shrinking, stable or growing during treatment.

“Measurable disease per RECIST 1.1” usually means at least one tumour 10 mm or more at its longest on a CT scan, or a lymph node 15 mm or more across its short axis.

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.

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.

Absolute neutrophil count (ANC)

The number of neutrophils, white blood cells that help fight infection, in a given amount of blood. Too few raises the risk of infection.

It is a count, not a percentage of the white cells. Limits are written in units that mean the same: ≥ 1.5 × 10⁹/L is ≥ 1,500 per mm³ (µL). Each lab has its own reference range.

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).

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.

Washout period

A planned gap after a treatment, so that its effects can lessen before the study treatment or a study assessment. Ask the study team and the doctor who prescribed it before changing any medicine.

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.

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.

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.

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.

05

Study design

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

Study arms

  • Experimental
    5-Azacitidine Plus PD-1/PD-L1 inhibitor

    This Phase I study will assess 6 doses of 5-Azacitidine (5, 10, 15, 25, 50 and 75 mg/m2) in combination with a PD1/PD-L1 inhibitor. The PD1/PD-L1 inhibitor will be given at standard of care dosing approved by the FDA for this indication. Inhibitors approved for study indications include Pembrolizumab, Nivolumab, and Cemiplimab.

    Drug: 5 Azacytidine · Drug: Pembrolizumab · Drug: Nivolumab · Drug: Cemiplimab

Interventions

  • 5-Azacitidine (Azacitidine) is a nucleoside analogue chemotherapy drug

  • Pembrolizumab is a high-affinity humanized monoclonal antibody that functions as immune checkpoint inhibitor

  • Nivolumab is a high-affinity humanized monoclonal antibody that functions as immune checkpoint inhibitor

  • Cemiplimab is a high-affinity humanized monoclonal antibody that functions as immune checkpoint inhibitor

06

What researchers measure

Primary outcomes

  1. Incidence of dose-limiting toxicities and responses as defined by CTCAE v5.0

    Assess the safety and tolerability of 5-Azacitidine Plus PD-1/PD-L1 inhibitor

    Time frame: Treatment initiation through 30 days +/- 7 days post completion of therapy

Secondary outcomes

  1. Proportion of participants with a complete response (CR)

    The proportion of patients with a pathologic complete response, defined as disappearance of all target lesions, disappearance of all non-target lesions and normalization of tumor marker level

    Time frame: Treatment initiation through five years

  2. Proportion of participants with a partial response (PR)

    At least a 30% decrease in the sum of the LD of target lesions, taking as reference the baseline sum LD

    Time frame: Treatment initiation through five years

  3. Overall Survival (OS)

    Time from study treatment initiation to death due to any cause

    Time frame: Treatment initiation through five years

  4. Progression Free Survival (PFS)

    Time from study treatment initiation to disease progression or death due to any cause

    Time frame: Treatment initiation through five years

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

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 28, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07404332
Lead sponsor
Mohammed Milhem
Responsible party
Mohammed Milhem (Clinical Professor, University of Iowa) — Sponsor-investigator
First posted
Feb 11, 2026
Start date
Feb 11, 2026
Primary completion
Feb 28, 2028 (estimated)
Completion
Feb 28, 2031 (estimated)
Last update
May 28, 2026

Study contacts

Mohammed Milhem, MD
Contact
mohammed-milhem@uiowa.edu
+1 319 356 2324
Mohammed Milhem, MD
principal investigator · University of Iowa

Oversight

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

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Studies of the drug tested here: Azacitidine

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