A Study to Evaluate the Safety and Effectiveness of AB928-Based Treatment Combinations to Treat Patients with Metastatic Colorectal Cancer


About this study

The purpose of this study is to evaluate the clinical activity, safety and tolerability of etruma-based treatment combinations.

Participation eligibility

Participant eligibility includes age, gender, type and stage of disease, and previous treatments or health concerns. Guidelines differ from study to study, and identify who can or cannot participate. There is no guarantee that every individual who qualifies and wants to participate in a trial will be enrolled. Contact the study team to discuss study eligibility and potential participation.

Inclusion Criteria:

- Male and female participants ≥ 18 years of age

- Histologically confirmed metastatic colorectal adenocarcinoma

- Must have at least 1 measurable lesion per RECIST v1.1

- Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1

- Life expectancy at least 3 months

- Adequate hematologic and end-organ function

- Negative HIV, Hep B and Hep C antibody testing

- Agreement to remain abstinent or use contraceptive measures with female partners of
reproductive potential, and agreement to refrain from donating sperm, for 30 days
after the last dose of etrumadenant, 90 days after the last dose of zim, 180 days
after mFOLFOX-6 and 180 days after bev, whichever is longer.

- Inclusion Criteria for Cohort A:

- Disease progression following not more than one prior line of treatment for mCRC that
consisted of oxaliplatin or irinotecan containing chemotherapy in combination with a
biologic agent

- Inclusion Criteria for Cohort B:

- Disease progression during or following not more that two separate lines of treatment
for mCRC that consisted of oxaliplatin, and irinotecan containing chemotherapy in
combination with a biologic agent

Exclusion Criteria:

- Previous anticancer treatment within 4 weeks prior to initiation of study treatment

- Prior allogeneic stem cell or solid organ transplant

- Treatment with systemic immunostimulatory agents within 4 weeks prior to initiation of
study treatment

- Use of any live vaccines against infectious diseases within 28 days of first dose.

- Symptomatic, untreated, or actively progressing central nervous system (CNS)

- Current treatment with anti-viral therapy for HBV

- Structurally unstable bone lesions suggesting impending fracture

- History or leptomeningeal disease

- History of idiopathic pulmonary fibrosis, organizing pneumonia, drug induced
pneumonitis, or idiopathic pneumonitis, or evidence of active pneumonitis on screening
chest CT scan

- History of malignancy other than colorectal cancer within 2 years prior to screening,
except for malignancies such as non-melanoma skin carcinoma or ductal carcinoma in

- Active tuberculosis

- Treatment with therapeutic oral or intravenous (IV) antibiotics within 2 weeks prior
to initiating study treatment

- Severe infection within 4 weeks (28 days) prior to initiation of study treatment

- Significant cardiovascular disease, unstable or new onset of angina within 3 months
prior to initiation of treatment, or myocardial infarction within 6 months prior to
study treatment or unstable arrhythmia

- Major surgical procedures, other than for diagnosis, within 4 weeks prior to
initiation of study treatment, or anticipation of need for major surgical procedure
during the study

- Known allergy or hypersensitivity to any of the study drugs or their excipients

- Inability to swallow medications

- Malabsorption condition that would alter the absorption of orally administered

- Evidence of inherited bleeding diathesis or significant coagulopathy at risk of
bleeding (i.e., in the absence of therapeutic anticoagulation)

- Prior treatment with an agent targeting the adenosine pathway

- Active or history of autoimmune disease or immune deficiency, including, but not
limited to, myasthenia gravis, myositis, autoimmune hepatitis, systemic lupus
erythematosus, rheumatoid arthritis, inflammatory bowel disease, antiphospholipid
antibody syndrome, Wegener granulomatosis, Sjögren syndrome, Guillain Barré syndrome,
or multiple sclerosis

- Exclusion Criteria for Cohorts A and B:

- Prior treatment with immune checkpoint blockade therapies including anit-cytotoxic T
lymphocyte-associated protein-4, anti PD-1, and anti-PD-L1 therapeutic antibodies

- Mutation in the BRAF oncogene. Patients with unknown BRAF status will be required to
undergo testing at a local laboratory and provide results at screening

Participating Mayo Clinic locations

Study statuses change often. Please contact the study team for the most up-to-date information regarding possible participation.

Mayo Clinic Location Status Contact

Scottsdale/Phoenix, Ariz.

Mayo Clinic principal investigator

Tanios Bekaii-Saab, M.D.

Closed for enrollment

Contact information:

Cancer Center Clinical Trials Referral Office


More information


Publications are currently not available

Additional contact information

Cancer-related trials contact form

Phone: 855-776-0015 (toll-free)

International patient clinical studies questions