Primary Outcomes:

Primary Outcome 1 - Measure: Number of participants with dose limiting toxicities (DLTs)

Primary Outcome 1 - Time Frame: Baseline through day 28

Primary Outcome 2 - Measure: Number of participants with treatment emergent adverse events (AEs)

Primary Outcome 2 - Time Frame: Baseline through approximately 2 years

Primary Outcome 3 - Measure: Number of participants with laboratory abnormalities

Primary Outcome 3 - Time Frame: Baseline through approximately 2 years

Condition:

• Advanced Solid Tumors
• Metastatic Solid Tumors

Eligibility

Criteria:
Inclusion Criteria:

- Participants who are intolerant or resistant to standard treatment for selected solid
tumors

- At least one measurable lesion as defined by RECIST version 1.1

- ECOG Performance Status 0 or 1

- Adequate Bone Marrow Function

- Adequate Renal Function

- Adequate Liver Function

- Resolved acute effects of any prior therapy

Exclusion Criteria:

- Known active uncontrolled or symptomatic CNS metastases.

- Major surgery, radiation therapy, systemic anti-cancer therapy or investigational
drug(s) within 4 weeks prior to study entry.

- Active, uncontrolled infection

- Known or suspected hypersensitivity to PF-06939999

- Inability to consume or absorb study drug
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Gender: All

Minimum Age: 18 Years

Maximum Age: N/A

Healthy Volunteers: No