| Eligibility |
Inclusion Criteria:
- Histologically or cytologically confirmed adenocarcinoma of the colon or the rectum
that is metastatic or unresectable (cohorts A,B); histologically or cytologically
confirmed carcinoma not originating in the colon or rectum (cohort C); or
histologically or cytologically confirmed adenocarcinoma of the colon or the rectum
following resection of the primary tumor and metastatic disease, following completion
of standard-of-care perioperative therapy at the discretion of the treating provider
(cohort D).
- Confirmation of: a) Cohort A: microsatellite instability in colorectal cancer (CRC);
b) Cohort B: CMS4 CRC classification on pretreatment primary tumor; c) Cohort C:
microsatellite instability in non-CRC solid tumor; d. Cohort D: microsatellite
stability.
- Ability to provide written informed consent.
- Documented progression to prior therapies (Cohorts A, B, and C): a) Cohort A: Disease
progression following prior immune checkpoint blockade therapy; b) Cohort B:
Progression or intolerance to at least 2 prior lines of standard therapy for
unresectable or metastatic CRC; c) Cohort C: Disease progression following prior
immune checkpoint blockade therapy.
- Available primary tumor tissue for CMS4 biomarker assessment.
- Life expectancy >= 12 weeks as judged by the treating physician.
- Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1.
- Measurable disease according to Response Evaluation Criteria in Solid Tumors (RECIST)
version (v) 1.1(Cohorts A, B, and C). For cohort B, measureable lesions must be
identified apart from the irradiated tumor lesion. Patients in cohort D must have no
evidence of radiographically evident disease at the time of study entry.
- Absolute neutrophil count (ANC) >= 1.5 x 10^9/L (in absence of blood transfusion).
- Lymphocyte count >= 0.5 x 10^9/L (in absence of blood transfusion).
- Platelet count >= 100 x 10^9/L (in absence of blood transfusion).
- Hemoglobin (Hgb) >= 9 g/dL (in absence of blood transfusion).
- Total bilirubin level =< 1.5 x the upper limit of normal (ULN).
- An aspartate aminotransferase (AST) level =< 2.5 x ULN, and an alanine
aminotransferase (ALT) level =< 2.5 x ULN. If liver metastases are present, then it is
acceptable for AST level =< 5.0 x ULN, and an ALT level =< 5.0 x ULN.
- International normalized ratio (INR) < 1.5.
- An estimated creatinine clearance > 30 mL/min according to the Cockcroft-Gault formula
or be measure for creatinine clearance from 24-hour urine collection.
- Highly effective contraception for both male and female subjects if the risk of
conception exists. Highly effective contraception must be used 30 days prior to first
trial administration, for the duration of trial treatment, and at least for 4 months
after stopping trial treatment. Should a woman become pregnant or suspect she is
pregnant while she or her partner is participating in this trial, the treating
physician should be informed immediately.
- Ability to tolerate receipt of radiotherapy to a metastasis not adjacent to a normal
dose-limiting structure, at the discretion of the treating radiation oncologist
(cohort B).
- Presence of detectable ctDNA following completion of R0 resection with or without
perioperative therapy, with confirmation of somatic mutations in the resected tumor
(cohort D only).
- Completion of all standard-of-care adjuvant therapy (cohort D).
Exclusion Criteria:
- Concurrent treatment with non-permitted drugs and other interventions.
- Anticancer treatment within 14 days before the start of trial treatment (e.g.,
cytoreductive therapy, radiotherapy [with the exception of palliative radiotherapy
delivered in a normal organ-sparing technique], immune therapy, or cytokine therapy).
- Major surgery as determined by the investigator within 28 days before the start of
trial treatment (prior diagnostic biopsy is permitted).
- Systemic therapy with immunosuppressive agents within 7 days before the start of
treatment; or use of any investigational drug within 28 days before the start of trial
treatment.
- Cohort A and C only: Intolerance or serious adverse immune related adverse events
(irAEs) that were symptomatic or required or continues to require ongoing
immunosuppression to previous immune checkpoint therapy.
- Cohort B and D: prior exposure to any immune checkpoint blockade agent or any other
immunomodulatory agent used for antineoplastic therapy for mCRC.
- Previous malignant disease (other than the target malignancy to be investigated in
this trial) within 3 years prior to study treatment initiation. Subjects with a
history of cervical carcinoma in situ, superficial or non-invasive bladder cancer, or
basal cell or squamous cell carcinoma in situ, previously treated with curative intent
are NOT excluded. Subjects with other localized malignancies treated with curative
intent need to be discussed with the principal investigator.
- Subjects with active central nervous system (CNS) metastases are excluded. Subjects
with a history of treated CNS metastases (by surgery or radiation therapy) are not
eligible unless they have fully recovered from treatment, demonstrated no progression
for at least 2 months, and do not require continued steroid therapy.
- Receipt of any organ transplantation, including allogeneic stem-cell transplantation,
but with the exception of transplants that do not require immunosuppression (e.g.,
corneal transplant, hair transplant).
- Significant acute or chronic infections including, among others: a) Known history of
testing positive test for human immunodeficiency virus (HIV) or known acquired
immunodeficiency syndrome; b) Hepatitis B virus (HBV) or hepatitis C virus (HCV)
infection (HBV surface antigen positive and HBV core antibody positive with reflex to
positive HBV DNA or HBV core antibody positive alone with reflex to positive HBV DNA
or positive HCV antibody with reflex to positive HCV ribonucleic acid [RNA]); c)
Subjects with active tuberculosis (history of exposure or history of positive
tuberculosis test plus presence of clinical symptoms, physical or radiographic
findings).
- Active autoimmune disease that might deteriorate when receiving an immunostimulatory
agent: a) Subjects with type I diabetes, vitiligo, alopecia, psoriasis, hypo- or
hyperthyroid disease not requiring immunosuppressive treatment are eligible; b)
Subjects requiring hormone replacement with corticosteroids are eligible if the
steroids are administered only for the purpose of hormonal replacement and at doses =<
10 mg of prednisone or equivalent per day; c) Administration of steroids for other
conditions through a route known to result in a minimal systemic exposure (topical,
intranasal, intro-ocular, or inhalation) is acceptable.
- Known severe hypersensitivity reactions to monoclonal antibodies (grade >= 3 National
Cancer Institute [NCI]-Common Terminology Criteria for Adverse Events [CTCAE] v4.03),
any history of anaphylaxis, or recent (within 5 months) history of uncontrolled
asthma.
- Persisting toxicity (except alopecia and vitiligo) related to prior oncologic therapy
grade > 1 NCI-CTCAE v4.03, however, sensory neuropathy grade =< 2 is acceptable.
- Clinically significant cardiovascular/ cerebrovascular disease as follows: cerebral
vascular accident / stroke (< 6 months prior to enrollment), myocardial infarction (<
6 months prior to enrollment), unstable angina, congestive heart failure (New York
Heart Association Classification class > II), or serious cardiac arrhythmia.
- Clinically relevant diseases (for example, inflammatory bowel disease) and / or
uncontrolled medical conditions, which, in the opinion of the Investigator, might
impair the subject's tolerance or ability to participate in the trial.
- Vaccine administration within 4 weeks of M7824 administration. Vaccination with live
vaccines while on trial is prohibited. Administration of inactivated vaccines is
allowed (for example, inactivated influenza vaccines).
- Cohort D: peritoneal carcinomatosis.
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