AzTrials
AzTrials

Solid TumorPhase 1NCT05720117

A Study of PYX-201 in Advanced Solid Tumors

A Phase 1 study testing PYX-201 in people with Solid Tumor and Advanced Solid Tumor, run by Pyxis Oncology, Inc at 29 sites in 4 countries.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
Search all trials

Trial summary

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

Who is it for?
Ages 18 years and older
Conditions the study is for
Solid Tumor, Advanced Solid Tumor
What is being tested?
PYX-201
Could I receive a placebo?
No, everyone receives an active treatment
How many people
330 participants
Where
29 sitesin 4 countries
Study dates
14 Mar 2023to 30 Jun 2028
Phase
Phase 1
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Histologically or cytologically confirmed solid tumors including locally advanced/metastatic HR+ and HER2- breast cancer (post CDK4/6 inhibitor +/- ET, ≤ 2 lines systemic therapy), TNBC (1-3 prior lines including post ADC topo-1 payload), HNSCC (1-2 prior lines including post PD-L1/PD1 and platinum based therapy), and other solid tumor types (≤ 2 lines systemic therapy).
  • Male or non-pregnant, non-lactating female participants age ≥18 years.
  • Eastern Cooperative Oncology Group (ECOG) Performance Status (PS) of 0 to 1.
  • Participant must have at least 1 measurable lesion per Response Evaluation Criteria in Solid Tumors (RECIST) v1.1.
  • Life expectancy of >3 months, in the opinion of the Investigator.
  • Corrected QTcF <470 msec.
Show all 11Show fewer
  • Adequate hematologic function.
  • Adequate hepatic function.
  • Adequate renal function.
  • Adequate coagulation profile.
  • Clinical sites must conduct fresh tumor biopsy or provide participant's archived tumor tissue sample.

Who cannot join

  • 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.
  • Known symptomatic brain metastases.
  • Significant cardiovascular disease within 6 months prior to start of study drug.
  • Evidence of an active systemic bacterial, fungal, or viral infection requiring treatment at the start of study drug.
  • Known active hepatitis B virus (HBV), hepatitis C virus (HCV), human immunodeficiency virus (HIV) or acquired immunodeficiency syndrome (AIDS).
  • Failure to recover to baseline severity or Grade ≤1 NCI-CTCAE v5.0 from acute non-hematologic toxicity.
Show all 17Show fewer
  • Participants with NCI-CTCAE v5.0 Grade >1 neuropathy of any etiology.
  • Prior solid organ or bone marrow progenitor cell transplantation.
  • Prior high-dose chemotherapy requiring stem cell rescue.
  • Received systemic anticancer therapy within 28 days or within 5 half-lives (whichever is shorter) prior to the start of study drug.
  • Palliative radiation therapy within 14 days prior to the start of study drug.
  • Previously received extra domain B splice variant of fibronectin (EDB+FN) targeting treatments at any time prior to the start of PYX-201 treatment.
  • History of uncontrolled diabetes mellitus.
  • History of Stevens-Johnson syndrome or toxic epidermal necrolysis.
  • Participants with corneal epithelial disease, with the exception of mild punctate keratopathy
  • Participants with the best-corrected visual acuity in the worst-seeing eye worse than 20/100 (Snellen equivalent).
  • Participants with a history of (noninfectious) pneumonitis/ interstitial lung disease that required steroids, has current pneumonitis/ interstitial lung disease, or evidence of active pneumonitis on screening chest CT scan or suspected ILD/pneumonitis that cannot be ruled out by imaging at screening.

Trial locations and contacts

29 sites in 4 countries. Contact the study team or a site near you to ask about taking part.

Pyxis Oncology Clinical Trials Team contact

(339) 545 8252

clinicaltrials@pyxisoncology.com

29 sites in 4 countries

United States17 sites, 17 recruiting
  • Winship Cancer Institute, Emory University

    Atlanta, Georgia, 30308

    Recruiting
  • Massachusetts General Hospital

    Boston, Massachusetts, 02114

    Recruiting
  • Dana-Farber Cancer Institute

    Boston, Massachusetts, 02215

    Recruiting
  • University of Chicago Medicine

    Chicago, Illinois, 60637

    Recruiting
  • University of Cincinnati Medical Center

    Cincinnati, Ohio, 45219

    Recruiting
  • NEXT Dallas

    Dallas, Texas, 75231

    Recruiting
  • SCRI - HealthOne Denver

    Denver, Colorado, 80218

    Recruiting
  • NEXT Virginia

    Fairfax, Virginia, 22031

    Recruiting
  • The University of Texas MD Anderson Cancer Center

    Houston, Texas, 77030

    Recruiting
  • Ronald Reagan UCLA Medical Center

    Los Angeles, California, 90095

    Recruiting
  • Memorial Sloan Kettering Cancer Center

    New York, New York, 10065

    Recruiting
  • University of Pennsylvania, Abramson Cancer Center

    Philadelphia, Pennsylvania, 19106

    Recruiting
  • Rhode Island Hospital

    Providence, Rhode Island, 02903

    Recruiting
  • NEXT San Antonio

    San Antonio, Texas, 78229

    Recruiting
  • SCRI - Florida Cancer Specialists

    Sarasota, Florida, 34232

    Recruiting
  • HonorHealth Research Institute

    Scottsdale, Arizona, 85258

    Recruiting
  • Washington University School of Medicine

    St Louis, Missouri, 63110-1010

    Recruiting

Other trials in United States

Spain5 sites, 5 recruiting
  • Hospital Universitari Vall d'Hebrón

    Barcelona, Barcelona, 08035

    Recruiting
  • START Madrid - Hospital Universitario Fundación Jiménez Díaz

    Madrid, Madrid, 28040

    Recruiting
  • Hospital Universitario 12 de Octubre

    Madrid, Madrid, 28041

    Recruiting
  • Hospital Universitario HM Sanchinarro

    Madrid, Madrid, 28050

    Recruiting
  • Hospital Clínico Universitario de Valencia

    Valencia, València, 46010

    Recruiting

Other trials in Spain

Belgium4 sites, 4 recruiting
  • Institut Jules Bordet

    Brussels, Brussels Capital, 1070

    Recruiting
  • Cliniques Universitaires Saint-Luc

    Brussels, Brussels Capital, 1200

    Recruiting
  • Universitair Ziekenhuis Antwerpen

    Edegem, Edegem, 2650

    Recruiting
  • Universitair Ziekenhuis Gent

    Ghent, Gent, 9000

    Recruiting

Other trials in Belgium

United Kingdom3 sites, 2 recruiting
  • University College Hospital

    London, England, NW1 2PG

    Recruiting
  • The Royal Marsden Hospital

    London, England, SW3 6JJ

    Recruiting
  • Sarah Cannon Research Institute London

    London, England, W1G 6AD

    Active, not recruiting

Other trials in United Kingdom

About this study

Official title: A First-in-Human, Open-label, Multicenter, Phase 1 Clinical Study to Evaluate the Safety, Tolerability, Pharmacokinetics, Pharmacodynamics, and Preliminary Efficacy of PYX-201 in Participants With Advanced Solid Tumors

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

Being tested
PYX-201
Keywords
Recurrent/Metastatic Solid Tumor, PYX-201
Medical subject headings
Neoplasm Metastasis

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • PYX-201Drug

    Antibody-Drug Conjugate

Study groups in NCT05720117
Study groupRoleWhat they receive
Dose EscalationExperimentalNot described
Receives: Drug: PYX-201
Dose Expansion Cohort A (HNSCC)ExperimentalNot described
Receives: Drug: PYX-201
Dose Expansion Cohort B (TNBC)ExperimentalNot described
Receives: Drug: PYX-201
Dose Expansion Cohort C (HR+ HER2- BC)ExperimentalNot described
Receives: Drug: PYX-201
Dose Expansion Cohort D (Other Solid Tumor Types)ExperimentalNot described
Receives: Drug: PYX-201

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Number of Participants who Experience a Dose-limiting Toxicity (DLT) in Dose Escalation

    DLT is defined as (1) an adverse event (AE) or abnormal laboratory value assessed as unrelated to disease, disease progression, intercurrent illness, or concomitant medications that occurs after the treatment with PYX-201 and (2) meets any of the predefined criteria outlined in the protocol.

    Measured: Day 1 to Day 21

  2. Safety and Tolerability as assessed by adverse event monitoring for participants in Dose Escalation

    Adverse Events as characterized by type, incidence, seriousness, relationship to study treatment, timing, and severity (as graded by NCI-CTCAE Version 5.0). Any clinically significant changes in clinical laboratory parameters, vital signs, and electrocardiogram (ECG) parameters will be recorded as AEs.

    Measured: Up to approximately 3 years

  3. Objective Response Rate (ORR) observed in participants in Dose Expansion

    Measured: Up to approximately 2 years

Secondary outcomes (21)
  1. Maximum Observed Concentration (Cmax) of PYX-201 in Dose Escalation and Dose Expansion

    Pharmacokinetic (PK) assessments for PYX-201

    Measured: Day 1 up to approximately 2 years

  2. Time to Maximum Concentration (Tmax) of PYX-201 in Dose Escalation and Dose Expansion

    Pharmacokinetic (PK) assessments for PYX-201

    Measured: Day 1 up to approximately 2 years

  3. Clearance (CL) of PYX-201 in Dose Escalation

    Pharmacokinetic (PK) assessments for PYX-201

    Measured: Day 1 up to approximately 2 years

  4. Area Under the Concentration-time Curve from Time 0 to the Last Quantifiable Concentration (AUC0-t) of PYX-201 in Dose Escalation

    Pharmacokinetic (PK) assessments for PYX-201

    Measured: Day 1 up to approximately 2 years

  5. Area Under the Concentration-time Curve Over the Dosing Interval (AUCtau) of PYX-201 in Dose Escalation

    Pharmacokinetic (PK) assessments for PYX-201

    Measured: Day 1 up to approximately 2 years

  6. Area Under the Concentration-time Curve from Time 0 Extrapolated to Infinity (AUC0-inf) of PYX-201 in Dose Escalation

    Pharmacokinetic (PK) assessments for PYX-201

    Measured: Day 1 up to approximately 2 years

  7. Half-life (t½) of PYX-201 in Dose Escalation

    Pharmacokinetic (PK) assessments for PYX-201

    Measured: Day 1 up to approximately 2 years

  8. Objective Response Rate (ORR) observed in participants in Dose Escalation

    Measured: Up to approximately 3 years

  9. Duration of Response (DOR) observed in participants in Dose Escalation and Dose Expansion

    Measured: Up to approximately 3 years

  10. Progression-free Survival (PFS) observed in participants in Dose Escalation

    Measured: Up to approximately 3 years

  11. Disease Control Rate (DCR) observed in participants in Dose Escalation and Dose Expansion

    Measured: Up to approximately 3 years

  12. Time to Response (TTR) observed in participants in Dose Escalation and Dose Expansion

    Measured: Up to approximately 3 years

  13. Overall Survival (OS) observed in participants in Dose Escalation

    Measured: Up to approximately 3 years

  14. Incidence of Anti-drug Antibodies (ADA) in participants treated with PYX-201 in Dose Escalation and Dose Expansion

    Measured: Up to approximately 2 years

  15. Clinical Benefit Rate (CBR) observed in participants in Dose Expansion

    Measured: Up to approximately 2 years

  16. Median Progression-free Survival (mPFS) observed in participants in Dose Expansion

    Measured: Up to approximately 4 years

  17. Median Overall Survival (mOS) observed in participants in Dose Expansion

    Measured: Up to approximately 4 years

  18. Cmax of PYX-201 in Dose Expansion

    Pharmacokinetic (PK) assessments for PYX-201

    Measured: Up to approximately 2 years

  19. Tmax of PYX-201 in Dose Expansion

    Pharmacokinetic (PK) assessments for PYX-201

    Measured: Up to approximately 2 years

  20. Trough Concentration of PYX-201 in Dose Expansion

    Pharmacokinetic (PK) assessments for PYX-201

    Measured: Up to approximately 2 years

  21. Safety and Tolerability as assessed by adverse event monitoring for participants in Dose Expansion

    Adverse Events characterized by type, incidence, seriousness, relationship to study treatment, timing, and severity (as graded by NCI-CTCAE Version 5.0). Any clinically significant changes in clinical laboratory parameters, vital signs, and ECG parameters will be recorded as AEs.

    Measured: Up to approximately 2 years

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted9 Feb 2023
  2. Study start14 Mar 2023
  3. Primary completion25 Apr 2027 (estimated)
  4. Study completion30 Jun 2028 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1
Primary purpose
Treatment
Allocation
Non-randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
330 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05720117
Sponsor's protocol ID
PYX-201-101
Other IDs
2023-509687-14-00, 2022-002284-30, 2023
Status last verified
Jun 2026
First submitted
30 Jan 2023
Last updated
30 Jun 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing PYX-201 in people with Solid Tumor and Advanced Solid Tumor, run by Pyxis Oncology, Inc at 29 sites in 4 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 11 inclusion and 17 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: looking for participants now, as of the sponsor's last update on 30 Jun 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 29 sites in United States, Spain, Belgium, United Kingdom. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Pyxis Oncology Clinical Trials Team ((339) 545 8252, clinicaltrials@pyxisoncology.com), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Number of Participants who Experience a Dose-limiting Toxicity (DLT) in Dose Escalation (time frame: Day 1 to Day 21). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 30 Jun 2026.

Free account

Log in to keep searching

You’ve used your 3 free searches. AzTrials is free: log in or create a free account to keep searching clinical trials and save the ones you want to follow.

Create a free accountLog in