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Oral Decitabine (ASTX727) and Durvalumab in Recurrent and/or Metastatic Head and Neck Cancer Patients

A Phase IB Rescue Study With Oral Decitabine (AStX727) and Durvalumab (MEDI4736) Combination Therapy in Recurrent and/or Metastatic Head and Neck Cancer Patients Who Have Progressed on Anti-PD-1, Anti-PD-L1, or Anti-CTLA-4 Monotherapy

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03019003
Enrollment
13
Registered
2017-01-12
Start date
2017-03-20
Completion date
2024-09-24
Last updated
2025-09-16

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Head and Neck Cancer

Keywords

Head and Neck Cancer

Brief summary

This is a non-randomized, open-label, Phase Ib study to assess the safety and efficacy of a DNA methyltransferase inhibitor and immune checkpoint inhibitor(s) (durvalumab and/or tremelimumab) combination therapy in the treatment of patients with recurrent and/or metastatic squamous cell carcinoma of the head and neck (SCCHN) who have progressed during or after treatment with anti-PD-1, anti-PD-L1, or anti-CTLA-4 monotherapy for recurrent and/or metastatic disease. The clinical trial is studying drugs that can boost the participant's immune system against the cancer cells as a possible treatment for head and neck cancer. The study interventions involved in this study are: * Oral Decitabine (ASTX 727) and 5' Azacytidine * Durvalumab (MEDI4736) and Tremelimumab

Detailed description

This research study is a Phase I clinical trial, which tests the safety of an investigational drug and also tries to define the appropriate dose of the investigational drug to use for further studies. Investigational means that the drugs are still being studied. The FDA (the U.S. Food and Drug Administration) has not approved durvalumab (MEDI4736) or tremelimumab as a treatment for head and neck cancer. The FDA (the U.S. Food and Drug Administration) has not approved oral decitabine (ASTX 7272) or 5' Azacytidine for the participant's specific disease but it has been approved for other uses. This is a first in human study evaluating the safety of combining these different drugs. Durvalumab (MEDI4736) and tremelimumab are part of a family of proteins that make up the immune system. The body generates these proteins, or antibodies, in response to foreign substances (particles not typically found in the body such as bacteria and viruses) and these antibodies can protect against infection. Durvalumab (MEDI4736) and tremelimumab are antibodies that are being studied in several other clinical trials to see if it has an effect in helping the immune system to recognize and eliminate abnormal cells in the body. Investigators hope that DNA methyltransferase inhibitors may increase the chance of the immune system to recognize the cancer cells. In this research study, the investigators are looking for the highest effective dose of DNA methyltransferase inhibitors in combination with durvalumab (MEDI4736) and/or tremelimumab to improve the natural ability of the immune system to recognize and target head and neck cancer cells.

Interventions

DNA methyltransferase inhibitor

DRUGDurvalumab

anti-PD-L1

DRUG5' Azacitidine

DNA methyltransferase inhibitor

DRUGTremelimumab

anti-CTLA4

Sponsors

AstraZeneca
CollaboratorINDUSTRY
Astex Pharmaceuticals, Inc.
CollaboratorINDUSTRY
Massachusetts General Hospital
Lead SponsorOTHER

Study design

Allocation
NON_RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Written informed consent and any locally-required authorization (e.g., HIPAA in the UEU Data Privacy Directive in the EU) obtained from the subject prior to performing any protocol-related procedures, including screening evaluations * Age ≥ 18 years at time of study entry or adult male or female (according to age of majority as defined as ≥18 years) * Histologically confirmed recurrent or metastatic SCCHN (oral cavity, oropharynx, hypopharynx, or larynx) not amenable to therapy with curative intent (surgery or radiation therapy with or without chemotherapy). Patients who refuse radical resection are eligible. * Tumor progression or recurrence during or after treatment with anti-PD1, anti-PDL1, anti-PDL2, anti-CTLA4, or other immune checkpoint inhibitor where the most recent dose was given within 3 months prior to study registration. * Must give valid written consent to provide archival FFPE and/or newly acquired tumor tissue for the purpose of establishing baseline PD-L1 status as well as consent to provide on- and/or post-treatment tumor biopsy sample. * Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1 at enrollment * Life expectancy of \> 6 months * At least 1 lesion that can be accurately measured at baseline as \> 10 mm in the longest diameter (except lymph nodes which must have a short axis \>15 mm) with CT or MRI and that is suitable for accurate repeated measurements as per RECIST 1.1 guidelines. * Adequate normal organ and marrow function as defined below (within 28 days prior to study registration): * Hemoglobin ≥ 9.0 g/dL * Absolute neutrophil count (ANC) ≥ 1.5 x 109/L (\> 1500 per mm3) * Platelet count ≥ 100 x 109/L (\>100,000 per mm3) * Serum bilirubin ≤ 1.5 x institutional upper limit of normal (ULN). This will not apply to subjects with confirmed Gilbert's syndrome (persistent or recurrent hyperbilirubinemia that is predominantly unconjugated in the absence of hemolysis or hepatic pathology), who will be allowed only in consultation with their physician. * AST (SGOT)/ALT (SGPT) ≤ 2.5 x institutional upper limit of normal unless liver metastases are present, in which case it must be ≤ 5x ULN * Serum creatinine level \<1.5 x ULN and CL\>40 mL/min by the Cockcroft-Gault formula (Cockcroft and Gault 1976) or by 24-hour urine collection for determination of creatinine clearance: Males: --Creatinine CL (mL/min) = Weight (kg) x (140 - Age) 72 x serum creatinine (mg/dL) Females: --Creatinine CL (mL/min) = Weight (kg) x (140 - Age) x 0.85 72 x serum creatinine (mg/dL) * Female subjects must either be of non-reproductive potential (ie, post-menopausal by history: ≥60 years old and no menses for ≥1 year without an alternative medical cause; OR history of hysterectomy, OR history of bilateral tubal ligation, OR history of bilateral oophorectomy) or must have a negative serum pregnancy test upon study entry. * Male subjects with a female partner of childbearing potential must commit to true abstinence from heterosexual contact or commit to the use of male condom plus spermicide throughout the course of the study, and avoid fathering a child during the course of the study (including dose interruptions) and for 6 months following the last dose of azacitidine. * All men and women of childbearing potential must use acceptable methods of birth control throughout the study as described below: Females of childbearing potential: Recommendation is for at least one highly effective contraceptive methods during the study and must agree to continue using such precautions for 180 days after the last dose of investigational product. Non-sterilized males : Non-sterilized male patients who are sexually active with a female partner of childbearing potential must use male condom plus spermicide from screening through 180 days after the last dose of investigational product. -Subject is willing and able to comply with the protocol for the duration of the study including undergoing treatment and scheduled visits and examinations including follo

Exclusion criteria

* Involvement in the planning and/or conduct of the study (applies to AstraZeneca staff and/or staff at the study site) * Histologically confirmed squamous cell carcinoma of any other primary anatomic location in the head and neck (eg. paranasal cavity) and non-squamous histologies (eg. nasopharynx or salivary gland) * History of another primary malignancy except for: * Malignancy treated with curative intent and with no known active disease ≥5 years before the first dose of study drug and of low potential risk for recurrence * Adequately treated non-melanoma skin cancer or lentigo maligna without evidence of disease * Adequately treated carcinoma in situ without evidence of disease eg, cervical cancer in situ * Receipt of the last dose of anti-cancer therapy (chemotherapy, immunotherapy, endocrine therapy, targeted therapy, biologic therapy, tumor embolization, monoclonal antibodies, other investigational agent) ≤ 21days prior to the first dose of study drug * Mean QT interval corrected for heart rate (QTc) ≥470 ms calculated from 3 electrocardiograms (ECGs) using Fredericia's Correction * Current or prior use of immunosuppressive medication within 28 days before the first dose of durvalumab (MEDI4736) or tremelimumab, with the exceptions of intranasal and inhaled corticosteroids or systemic corticosteroids at physiological doses, which are not to exceed 10 mg/day of prednisone, or an equivalent corticosteroid * Any unresolved toxicity NCI CTCAE grade 2 from previous anti-cancer therapy with the exception of alopecia, vitiligo, and the laboratory values defined in the inclusion criteria. * Patients with Grade \> 2 neuropathy will be evaluated on a case-by-case basis and may be included after consultation with the Study Physician. --Patients with irreversible toxicity not reasonably expected to be exacerbated by treatment with their assigned IP (eg, hearing loss) may be included after consultation with the Study Physician. * Any prior Grade ≥3 immune-related adverse event (irAE) while receiving any previous immunotherapy agent, or any unresolved irAE \>Grade 1 * Abnormal coagulation parameters (PT \>15 seconds, PTT\>40 seconds, and/or INR \>1.5) * Active or prior documented autoimmune disease within the past 2 years NOTE: Subjects with vitiligo, Grave's disease, or psoriasis not requiring systemic treatment (within the past 2 years) are not excluded. * Active or prior documented inflammatory bowel disease (e.g., Crohn's disease, ulcerative colitis) * History of primary immunodeficiency * History of allogeneic organ transplant * History of hypersensitivity to durvalumab (MEDI4736), tremelimumab, or any excipient * Known or suspected hypersensitivity to azacitidine or mannitol * Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, uncontrolled hypertension, unstable angina pectoris, cardiac arrhythmia, myocardial infarction in the past 6 months, active peptic ulcer disease or gastritis, active bleeding diatheses including any subject known to have evidence of acute or chronic hepatitis B, hepatitis C or human immunodeficiency virus (HIV), or psychiatric illness/social situations that would limit compliance with study requirements or compromise the ability of the subject to give written informed consent * Known history of previous clinical diagnosis of tuberculosis * Uncontrolled systemic fungal, bacterial or viral infection (defined as ongoing signs/symptoms related to the infection without improvement despite appropriate antibiotics, antiviral therapy and/or other treatment) * History of leptomeningeal carcinomatosis * Receipt of live attenuated vaccination within 30 days prior to study entry or within 30 days of receiving durvalumab (MEDI4736) or tremelimumab * Female subjects who are pregnant, breast-feeding or male or female patients of reproductive potential who are not employing an effective method of birth control * Any condition that, in the opinion of the investigator, would interfere with evaluation of study treatment or interpretation of patient safety or study results * Symptomatic or uncontrolled brain metastases requiring concurrent treatment, inclusive of but not limited to surgery, radiation and/or corticosteroids. * Subjects with uncontrolled seizures. * Female patients who are pregnant or breastfeeding or male or female patients of reproductive potential who are not willing to employ effective birth control from screening to 180 days after the last dose of azacitidine, durvalumab (MEDI4736) and/or tremelimumab therapy. Lactating females must agree not to breast feed throughout this period

Design outcomes

Primary

MeasureTime frameDescription
Change in Immune-based Biomarker Expression at Baseline and 2 Months2 monthsGreater than 2-fold change in immune-based biomarker expression within the tumor microenvironment

Secondary

MeasureTime frameDescription
Number of Participants With Dose Limiting Toxicity2 yearsAdverse events were reported using Common Terminology Criteria for Adverse Events (CTCAE) v4.3.

Countries

United States

Participant flow

Participants by arm

ArmCount
5' Azacytidine (40 mg/m^2) Days 1-5 + Durvalumab + Tremelimumab
Low Dose 5'aza (40 mg/m\^2) SC daily will be administered alone in Cycle 1 and the combination of 5'aza, durvalumab, and tremelimumab therapy will be given in Cycles 2-12. 5'aza: DNA Methyltransferase Inhibitor Durvalumab: anti-PD-L1 Tremelimumab: anti-CTLA4
7
5' Azacytidine (40 mg/m^2) Days 1-5 and 8-12 + Durvalumab + Tremelimumab
Low Dose 5'aza (40 mg/m\^2) SC daily will be administered alone in Cycle 1 and the combination of 5'aza, durvalumab, and tremelimumab therapy will be given in Cycles 2-12. 5'aza: DNA Methyltransferase Inhibitor Durvalumab: anti-PD-L1 Tremelimumab: anti-CTLA4
5
Oral Decitabine Days 1-3 + Durvalumab
Oral Decitabine (35 mg) will be administered alone in Cycle 1 and the combination of decitabine and durvalumab will be given in Cycles 2-12. 5'aza: DNA Methyltransferase Inhibitor Durvalumab: anti-PD-L1
1
Total13

Baseline characteristics

Characteristic5' Azacytidine (40 mg/m^2) Days 1-5 + Durvalumab + Tremelimumab5' Azacytidine (40 mg/m^2) Days 1-5 and 8-12 + Durvalumab + TremelimumabOral Decitabine Days 1-3 + DurvalumabTotal
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
4 Participants2 Participants1 Participants7 Participants
Age, Categorical
Between 18 and 65 years
3 Participants3 Participants0 Participants6 Participants
Age, Continuous62.9 years
STANDARD_DEVIATION 6.5
61.4 years
STANDARD_DEVIATION 9.6
67.1 years
STANDARD_DEVIATION 0
65.5 years
STANDARD_DEVIATION 7.4
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants0 Participants0 Participants0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
6 Participants5 Participants1 Participants12 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
1 Participants0 Participants0 Participants1 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Black or African American
0 Participants1 Participants0 Participants1 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
1 Participants0 Participants0 Participants1 Participants
Race (NIH/OMB)
White
6 Participants4 Participants1 Participants11 Participants
Region of Enrollment
United States
7 participants5 participants1 participants13 participants
Sex: Female, Male
Female
0 Participants1 Participants0 Participants1 Participants
Sex: Female, Male
Male
7 Participants4 Participants1 Participants12 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
7 / 74 / 51 / 1
other
Total, other adverse events
7 / 72 / 51 / 1
serious
Total, serious adverse events
1 / 74 / 51 / 1

Outcome results

Primary

Change in Immune-based Biomarker Expression at Baseline and 2 Months

Greater than 2-fold change in immune-based biomarker expression within the tumor microenvironment

Time frame: 2 months

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Oral Decitabine and DurvalumabChange in Immune-based Biomarker Expression at Baseline and 2 Months0 Participants
5' Azacitidine 40 mg/m^2 on Days 1-5 and 8-12, Durvalumab, and TremelimumabChange in Immune-based Biomarker Expression at Baseline and 2 Months1 Participants
5' Azacitidine 40 mg/m^2 on Days 1-5, Durvalumab, and TremelimumabChange in Immune-based Biomarker Expression at Baseline and 2 Months2 Participants
p-value: <0.036t-test, 2 sided
Secondary

Number of Participants With Dose Limiting Toxicity

Adverse events were reported using Common Terminology Criteria for Adverse Events (CTCAE) v4.3.

Time frame: 2 years

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Oral Decitabine and DurvalumabNumber of Participants With Dose Limiting Toxicity0 Participants
5' Azacitidine 40 mg/m^2 on Days 1-5 and 8-12, Durvalumab, and TremelimumabNumber of Participants With Dose Limiting Toxicity1 Participants
5' Azacitidine 40 mg/m^2 on Days 1-5, Durvalumab, and TremelimumabNumber of Participants With Dose Limiting Toxicity0 Participants

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026