Inclusion Criteria:

   1. Male or female participant aged 18 years or older.

   2. Pathologic diagnosis of solid tumor malignancy that is locally advanced or metastatic
   at time of screening:

   Part 1:

      1. Combination therapy arms: Selected sarcoma indications from the following 2
      separate categories.

         - Soft tissue sarcoma: leiomyosarcoma, liposarcoma, undifferentiated
         pleomorphic sarcoma (UPS; covering malignant fibrous histiocytoma) and
         synovial sarcoma.

         - Bone sarcoma: Ewing's sarcoma (including extraskeletal), osteosarcoma, and
         chondrosarcoma.

      2. Monotherapy arms:

         - Sarcoma indications (including those listed for combination therapy arms)
         regardless of AXL gene amplification status.

         - NSCLC regardless of AXL gene amplification status.

         - Solid tumors (lymphomas participants are excluded) with known AXL gene
         amplification.

   Part 2:

      1. Combination therapy arms: Sarcoma indications and PAAD.

      2. Monotherapy arms: PAAD, NSCLC and solid tumors with AXL expression.

   3. Participants who are refractory to or intolerant to available standard therapy(ies)
   known to provide clinical benefit for their condition per Investigator judgment.

   4. Participants with measurable disease as determined by Response Evaluation Criteria in
   Solid Tumors (RECIST) v1.1.

   5. Eastern Cooperative Oncology Group (ECOG) performance status 0 - 1.

   6. PAAD only: Royal Marsden Hospital Prognostic Score 0 - 1.

Exclusion Criteria:

   1. History of recent infection requiring intravenous (IV) antibiotics, IV antiviral, or
   IV antifungal treatment within 4 weeks of Cycle 1 Day 1 (C1D1).

   2. Symptomatic central nervous system (CNS) metastases or evidence of leptomeningeal
   disease (brain magnetic resonance imaging [MRI] or previously documented cerebrospinal
   fluid [CSF] cytology). Previously treated asymptomatic CNS metastases are permitted
   provided that the last treatment (systemic anticancer therapy and/or local
   radiotherapy) was completed ≥4 weeks prior to Day 1 except usage of low dose of
   steroids on a taper (i.e., up to 10 mg prednisone or equivalent on Day 1 and
   consecutive days is permissible if being tapered down). Participants with discrete
   dural metastases are eligible.

   3. Clinically significant third space fluid accumulation (i.e., ascites requiring
   drainage or any serosal effusion that is either requiring drainage or associated with
   shortness of breath).

   4. Active diarrhea Common Terminology Criteria for Adverse Events (CTCAE) Grade 2 or a
   medical condition associated with chronic diarrhea (such as irritable bowel syndrome,
   inflammatory bowel disease).

   5. Use of any other experimental medication within 14 days prior to start of study drug
   (C1D1).