Study of PYX-201 in Solid Tumors

NCT ID: NCT05720117

Last Updated: 2025-08-01

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE1

Total Enrollment

330 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-03-14

Study Completion Date

2027-05-31

Brief Summary

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The primary objectives of this study are to determine the recommended dose(s) of PYX-201 for participants with relapsed/refractory (R/R) solid tumors, and to determine the objective response rate (ORR) in participants treated with PYX-201 as a single agent.

Detailed Description

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Conditions

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Solid Tumor Advanced Solid Tumor

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Part 1: PYX-201 Dose Escalation

Participants will receive escalating doses of PYX-201 as an intravenous (IV) infusion to evaluate the safety, tolerability, pharmacokinetics (PK), pharmacodynamics, and antitumor activity of PYX-201. Intra-participant dose escalation may be considered for participants who have adequately tolerated therapy.

Group Type EXPERIMENTAL

PYX-201

Intervention Type DRUG

IV infusion

Part 2: Cohort A

Participants with recurrent, persistent, and/or metastatic head and neck squamous cell carcinoma (HNSCC) who have received at least one but no more than two lines of prior systemic therapy, including platinum-based therapy and a programmed cell death protein 1 (PD-1) inhibitor, and participants who have received up to two lines of prior therapy that must include one prior PD-1 inhibitor and one prior epidermal growth factor receptor (EGFR)-directed treatment, will receive PYX-201 as an IV infusion at the recommended dose for Part 2.

Group Type EXPERIMENTAL

PYX-201

Intervention Type DRUG

IV infusion

Part 2: Cohort B

Participants with triple-negative breast cancer (TNBC) who have been treated with at least one but no more than two lines of prior systemic therapy will receive PYX-201 as an IV infusion at the recommended dose for Part 2.

Group Type EXPERIMENTAL

PYX-201

Intervention Type DRUG

IV infusion

Part 2: Cohort C

Participants with hormone receptor (HR)-positive (HR+)/human epidermal growth factor receptor 2 (HER2)-negative (immunohistochemistry \[IHC\] 0, IHC 1+, or IHC 2+/in situ hybridization \[ISH\]-negative) breast cancer who had progressed on cyclin-dependent kinase 4/6 (CDK-4/6) inhibitors plus endocrine therapy and one line of chemotherapy, and had received no more than three prior lines of systemic therapy, will receive PYX-201 as an IV infusion at the recommended dose for Part 2.

Group Type EXPERIMENTAL

PYX-201

Intervention Type DRUG

IV infusion

Part 2: Cohort D

Participants with various advanced solid tumor types, including non-small cell lung cancer (NSCLC), sarcomas, rare solid tumor head and neck (H\&N) cancers, ovarian cancer (OVCA), cervical cancer, and endometrial cancer, will receive PYX-201 as an IV infusion at the recommended dose for Part 2.

Group Type EXPERIMENTAL

PYX-201

Intervention Type DRUG

IV infusion

Interventions

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PYX-201

IV infusion

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

1. Histologically or cytologically confirmed solid tumors including locally advanced/metastatic NSCLC, HR+ and HER2- breast cancer, HR- and HER2-positive breast cancer, TNBC, HNSCC, ovarian cancer, thyroid cancer, pancreatic ductal adenocarcinoma (PDAC), sarcomas, hepatocellular carcinoma (HCC), kidney cancer, cervical cancer and endometrial cancer.
2. Male or non-pregnant, non-lactating female participants age ≥18 years.
3. Eastern Cooperative Oncology Group (ECOG) Performance Status (PS) of 0 to 1.
4. Participant must have at least 1 measurable lesion per Response Evaluation Criteria in Solid Tumors (RECIST) v1.1.
5. Life expectancy of \>3 months, in the opinion of the Investigator.
6. Corrected QTcF \<470 msec.
7. Adequate hematologic function.
8. Adequate hepatic function.
9. Adequate renal function.
10. Adequate coagulation profile.
11. Clinical sites must conduct fresh tumor biopsy or provide participant's archived tumor tissue sample.

Exclusion

1. History of another malignancy except for the following: adequately treated local basal cell or squamous cell carcinoma of the skin; in situ cervical carcinoma; adequately treated, noninvasive bladder cancer.
2. Known symptomatic brain metastases.
3. Significant cardiovascular disease within 6 months prior to start of study drug.
4. Evidence of an active systemic bacterial, fungal, or viral infection requiring treatment at the start of study drug.
5. Known active hepatitis B virus (HBV), hepatitis C virus (HCV), human immunodeficiency virus (HIV) or acquired immunodeficiency syndrome (AIDS).
6. Failure to recover to baseline severity or Grade ≤1 NCI-CTCAE v5.0 from acute non-hematologic toxicity.
7. Participants with NCI-CTCAE v5.0 Grade \>1 neuropathy of any etiology.
8. Prior solid organ or bone marrow progenitor cell transplantation.
9. Prior high-dose chemotherapy requiring stem cell rescue.
10. Received systemic anticancer therapy within 28 days or within 5 half-lives (whichever is shorter) prior to the start of study drug.
11. Palliative radiation therapy within 14 days prior to the start of study drug.
12. Previously received extra domain B splice variant of fibronectin (EDB+FN) targeting treatments at any time prior to the start of PYX-201 treatment.
13. History of uncontrolled diabetes mellitus.
14. History of Stevens-Johnson syndrome or toxic epidermal necrolysis.
15. Participants with corneal epithelial disease, with the exception of mild punctate keratopathy
16. Participants with the best-corrected visual acuity in the worst-seeing eye worse than 20/100 (Snellen equivalent).
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Pyxis Oncology, Inc

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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HonorHealth Research Institute

Scottsdale, Arizona, United States

Site Status RECRUITING

SCRI - HealthOne Denver

Denver, Colorado, United States

Site Status RECRUITING

SCRI - Florida Cancer Specialists

Sarasota, Florida, United States

Site Status RECRUITING

University of Chicago Medicine

Chicago, Illinois, United States

Site Status RECRUITING

Massachusetts General Hospital

Boston, Massachusetts, United States

Site Status RECRUITING

Washington University School of Medicine

St Louis, Missouri, United States

Site Status RECRUITING

Rhode Island Hospital

Providence, Rhode Island, United States

Site Status RECRUITING

NEXT Dallas

Dallas, Texas, United States

Site Status RECRUITING

NEXT San Antonio

San Antonio, Texas, United States

Site Status RECRUITING

NEXT Virginia

Fairfax, Virginia, United States

Site Status RECRUITING

Institut Jules Bordet

Brussels, Brussels Capital, Belgium

Site Status RECRUITING

Cliniques Universitaires Saint-Luc

Brussels, Brussels Capital, Belgium

Site Status RECRUITING

Universitair Ziekenhuis Antwerpen

Edegem, , Belgium

Site Status RECRUITING

Universitair Ziekenhuis Gent

Ghent, , Belgium

Site Status RECRUITING

Hospital Universitari Vall d'Hebrón

Barcelona, Barcelona, Spain

Site Status RECRUITING

START Madrid - Hospital Universitario Fundación Jiménez Díaz

Madrid, Madrid, Spain

Site Status RECRUITING

Hospital Universitario 12 de Octubre

Madrid, Madrid, Spain

Site Status RECRUITING

Hospital Universitario HM Sanchinarro

Madrid, Madrid, Spain

Site Status RECRUITING

Hospital Clínico Universitario de Valencia

Valencia, València, Spain

Site Status RECRUITING

Sarah Cannon Research Institute London

London, England, United Kingdom

Site Status RECRUITING

Countries

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United States Belgium Spain United Kingdom

Central Contacts

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Pyxis Oncology Clinical Trials Team

Role: CONTACT

(339) 545 8252

Other Identifiers

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2023-509687-14-00

Identifier Type: CTIS

Identifier Source: secondary_id

2022-002284-30

Identifier Type: EUDRACT_NUMBER

Identifier Source: secondary_id

PYX-201-101

Identifier Type: -

Identifier Source: org_study_id

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