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Study of PF-07263689 in Participants With Selected Advanced Solid Tumors

Pfizer logo

Pfizer

Status and phase

Terminated
Phase 1

Conditions

Squamous Cell Carcinoma
Sarcoma
Bladder Cancer
Melanoma
Hepatocellular Cancer
Renal Cell Cancer
Ovarian Cancer
Head and Neck Cancer
Non-Small-Cell Lung Cancer
Colorectal Cancer

Treatments

Biological: Sasanlimab
Biological: PF-07263689

Study type

Interventional

Funder types

Industry

Identifiers

NCT05061537
C4651001
OBIR-2 (Other Identifier)

Details and patient eligibility

About

This is a first-in-human, Phase 1, open label, multicenter, multiple dose, dose escalation and expansion study intended to evaluate the safety, viral load kinetics and shedding, pharmacodynamic, and anti-tumor activity of PF-07263689, either alone or in combination with sasanlimab (an investigational anti-programmed cell death protein 1 [PD-1] antibody), in patients with selected locally advanced or metastatic solid tumors who have exhausted all available standard of care therapies available to them.

The study consists of 2 parts: Part 1 dose escalation for PF-07263689 monotherapy (Part 1A) and in combination with sasanlimab (Part 1B), followed by Part 2 dose expansion for the combination therapy.

Enrollment

13 patients

Sex

All

Ages

18+ years old

Volunteers

No Healthy Volunteers

Inclusion criteria

  • Histological or cytological diagnosis of locally advanced or metastatic solid tumors known to have approved therapies using immune checkpoint inhibitors or anti-vascular endothelial growth factor agents
  • Have exhausted (or refuse) all available standard of care therapy (e.g., including anti-PD1/programmed death ligand 1 [PDL1] if applicable) or for whom no standard therapy is available for their tumor type
  • Patients with prior anti-PD1/PDL1 must have documentation of primary or secondary resistance to last prior anti-PD1/PDL1 therapy according to Immunotherapy Resistance Committee (SITC) (Kluger et al, 2020)
  • Have at least 1 measurable lesion by RECIST 1.1 that has not been previously irradiated (for Part 2 only)
  • Have recently obtained archival tumor tissue sample available, or undergo de novo tumor biopsy
  • Eastern Cooperative Oncology Group (ECOG) PS 0-1
  • Adequate hematologic, renal, and liver functions
  • Dose Escalation (Part 1A and 1B): Any advanced or metastatic solid tumor fulfilling other relevant eligibility criteria.
  • Dose Expansion (Part 2): Tumor specific cohorts (NSCLC, RCC, melanoma, MSS CRC) must have received prior approved therapies (Part 2)

Exclusion criteria

  • Other active malignancy
  • Recent major surgery
  • Systemic anticancer therapy and chemotherapy within protocol-defined washout period
  • Known or suspected hypersensitivity to prior treatment with any vaccinia oncolytic, pox virus, or antiviral agents within the past 10 years
  • Current or history of myocarditis or congestive heart failure (New York Heart Association [NYHA] III-IV); unstable angina; or serious uncontrolled arrhythmia or recent myocardial infarction
  • Active or history of interstitial lung disease (ILD)/pneumonitis
  • Patients requiring chronic systemic immunosuppressants
  • History of severe immune mediated side effect that was considered related to prior immune modulatory therapy and requiring immunosuppressive therapy
  • Known symptomatic brain metastases requiring steroids
  • History of or ongoing severe inflammatory skin conditions or severe eczema having required medical treatment
  • Any prior or planned organ transplant
  • Presence of any open, active wound requiring treatment

Trial design

Primary purpose

Treatment

Allocation

Non-Randomized

Interventional model

Single Group Assignment

Masking

None (Open label)

13 participants in 5 patient groups

Monotherapy dose escalation (Part 1A)
Experimental group
Description:
Participants will receive PF-07263689 once a week for 4 doses
Treatment:
Biological: PF-07263689
Combination dose escalation (Part 1B)
Experimental group
Description:
Participants will receive PF-07263689 intravenous (IV) once week for 4 doses in combination with sasanlimab subcutaneous (SC) once every 4 weeks
Treatment:
Biological: Sasanlimab
Biological: PF-07263689
Dose expansion (Part 2) - Tumor specific Arm A
Experimental group
Description:
Participants will receive PF-07263689 IV once week for 4 doses in combination with sasanlimab SC once every 4 weeks
Treatment:
Biological: Sasanlimab
Biological: PF-07263689
Dose expansion (Part 2) - Tumor specific Arm B
Experimental group
Description:
Participants will receive PF-07263689 IV once week for 4 doses in combination with sasanlimab SC once every 4 weeks
Treatment:
Biological: Sasanlimab
Biological: PF-07263689
Dose expansion (Part 2) - Tumor specific Arm C
Experimental group
Description:
Participants will receive PF-07263689 IV once week for 4 doses in combination with sasanlimab SC once every 4 weeks
Treatment:
Biological: Sasanlimab
Biological: PF-07263689

Trial documents
2

Trial contacts and locations

3

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Data sourced from clinicaltrials.gov

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