The study was prematurely discontinued due to strategic reasons. The PF-07284892 program will continue

The purpose of this first-in-patient, open label study is to determine the maximum tolerated dose and/or recommended dose for further study of PF-07284892 as a single agent and in combination with lorlatinib, encorafenib and cetuximab, or binimetinib and evaluate the pharmacokinetics, safety, and preliminary clinical activity of single agent and each combination therapy.

Inclusion Criteria:

• Age ≥18 years at the time of informed consent
• Histological or cytological diagnosis of ALK-positive advanced NSCLC, CRC with BRAF V600E mutation, or RAS- mutant, NF1-mutant or BRAF class 3 mutant solid tumor. Participants with ROS-positive NSCLC are also eligible for Part 1 and 2 (Other ROS1-positive solid tumors may be considered after discussion with the sponsor).
• Documentation evidence of biomarker mutation status
• Part 3:

ALK-positive NSCLC with prior lorlatinib and no prior platinum-based chemotherapy (Cohort 1); with prior lorlatinib and prior platinum-based chemotherapy (Cohort 2); or with no prior lorlatinib (Cohort 3).

BRAF V600E mutant CRC participants resistant to BRAFi plus EGFRi (Cohort 4 ); refractory to BRAFi plus EGFRi (Cohort 5); or BRAFi plus EGFRi naïve (Cohort 6).

RAS- mutant, NF1-mutant or BRAF class 3 mutant solid tumors who have received prior SOC (Cohort 7).

Exclusion Criteria:

• Brain metastasis larger than 4 cm
• Active malignancy within 3 years
• Systemic anti-cancer therapy or small molecule therapeutics within 2 weeks prior to start of study treatment. Antibody based agents within 4 weeks prior to start of study treatment. Mitomycin C or nitrosoureas within 6 weeks prior to start of study treatment.
• For participants who may get lorlatinib or encorafenib on study, history of interstitial lung disease
• For participants who may get binimetinib on study, history or current evidence of retinal vein occlusion (RVO) or concurrent neuromuscular disorder associated with elevated creatine kinase (CK)

Pfizer will provide access to individual de-identified participant data and related study documents (e.g. protocol, Statistical Analysis Plan (SAP), Clinical Study Report (CSR)) upon request from qualified researchers, and subject to certain criteria, conditions, and exceptions. Further details on Pfizer's data sharing criteria and process for requesting access can be found at: https://www.pfizer.com/science/clinical\_trials/trial\_data\_and\_results/data\_requests.