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Non-invasive imaging of tumor PD-L1 expression with 89Zr-labeled durvalumab PET/CT predicts response to durvalumab.
Full description
The programmed death 1 (PD1)/ programmed death ligand 1 (PD-L1) pathway plays an important role in regulating the T-cell anti tumor response. Blocking this interaction with the anti PD-L1 monoclonal antibody durvalumab has proven to be effective resulting in durable disease control rates. Currently, PD-L1 expression as determined by immune histochemistry (IH) is the best available biomarker for treatment response, but standardized scoring criteria are lacking and the risk for sampling errors exists. Molecular imaging using 89Zr-labeled antibodies may overcome these limitations, enabling the visualization of PD-L1 expression in primary and metastatic tumor lesions and providing information on the in vivo accessibility of the PD-L1 target following intravenous administration. Besides, a baseline FDG-PET scan will be performed.
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Inclusion criteria
Written informed consent and any locally-required authorization (e.g., HIPAA in the USA, EU 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, age > 20 years for Japanese subjects.
Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1
Life expectancy of > 12 weeks
Adequate normal organ and marrow function as defined below:
Female subjects must either be of non-reproductive potential (i.e., 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.
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 follow up.
Histological proven recurrent or metastatic squamous cell cancer of the head and neck
At least one lesion with a tumor size ≥1 cm
Exclusion criteria
Involvement in the planning and/or conduct of the study (applies to both AstraZeneca staff and/or staff at the study site). Previous enrollment in the present study
Participation in another clinical study with an investigational product during the last 4 weeks
Any previous treatment with a PD1 or PD-L1 inhibitor, including durvalumab
History of another primary malignancy except for:
Receipt of the last dose of anti-cancer therapy (chemotherapy, immunotherapy, endocrine therapy, targeted therapy, biologic therapy, tumor embolization, monoclonal antibodies, other investigational agent) 28 days prior to the first dose of study drug 28 days prior to the first dose of study drug for subjects who have received prior TKIs [e.g., erlotinib, gefitinib and crizotinib] and within 6 weeks for nitrosourea or mitomycin C).
Mean QT interval corrected for heart rate (QTc) ≥ 470 ms calculated from 3 electrocardiograms (ECGs) using Frediricia's Correction
Current or prior use of immunosuppressive medication within 28 days before the first dose of durvalumab, 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 (>CTCAE grade 2) from previous anti-cancer therapy. Subjects with irreversible toxicity that is not reasonably expected to be exacerbated by the investigational product may be included (e.g., hearing loss, peripherally neuropathy)
Any prior Grade ≥3 immune-related adverse event (irAE) while receiving any previous immunotherapy agent, or any unresolved irAE >Grade 1
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 or any excipients
History of hypersensitivity to the combination or comparator agent (If applicable)
Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, uncontrolled hypertension, unstable angina pectoris, cardiac arrhythmia, 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
Active infection including tuberculosis (clinical evaluation that includes clinical history, physical examination and radiographic findings, and TB testing in line with local practice), hepatitis B (known positive HBV surface antigen (HBsAg) result), hepatitis C, or human immunodeficiency virus (positive HIV 1/2 antibodies). Patients with a past or resolved HBV infection (defined as the presence of hepatitis B core antibody [anti-HBc] and absence of HBsAg) are eligible. Patients positive for hepatitis C (HCV) antibody are eligible only if polymerase chain reaction is negative for HCV RNA.
History of leptomeningeal carcinomatosis
Receipt of live attenuated vaccination within 30 days prior to study entry or within 30 days of receiving durvalumab
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: Female patient of child-bearing potential
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.
Primary purpose
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Interventional model
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33 participants in 1 patient group
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Data sourced from clinicaltrials.gov
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