Safety and Preliminary Efficacy of ATG-017 Monotherapy or Combination Therapy With Nivolumab in Advanced Solid Tumors and Hematological Malignancies

Inclusion Criteria:

1. Provision of signed and dated, written informed consent prior to any study specific procedures, sampling and analyses.
2. Aged at least 18 years.
3. Module A: Patient must have a documented activating alteration of the RAS-MAPK pathway.
4. Module B: Dose Escalation Phase: Patient must have a documented activating alteration of the RAS-MAPK pathway; Dose Expansion Phase: Expansion cohorts will be further defined based on information from the Dose Escalation.
5. Histological or cytological confirmation of a solid tumour.
6. Patient with solid tumors must have at least 1 lesion, not previously irradiated.
7. Estimated life expectancy of minimum of 12 weeks.
8. Eastern Cooperative Oncology Group (ECOG) performance status 0 or 1.
9. Ability to swallow and retain oral medication.

Exclusion Criteria:

1. Central nervous system metastatic disease, leptomeningeal disease, or metastatic cord compression.
2. Prior ATG-017 administration in the present study.
3. Prior treatment with an ERK1/2 inhibitor.
4. Prior major surgery within 28 days of the first dose of study treatment or minor surgical procedures ≤7 days.
5. Patients receiving unstable or increasing doses of corticosteroids.
6. As judged by the investigator, any evidence of severe or uncontrolled systemic diseases.
7. Active infection including hepatitis B, and/or hepatitis C.
8. Known history of human immunodeficiency virus (HIV) infection.
9. Inadequate bone marrow reserve or organ function

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