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NCT Number: NCT06434909

CYTALUX™for the Intraoperative Imaging of Prostate Cancer

This study is being done to compare how much using Cytalux™ (pafolacianine) with NIR (Near InfraRed) fluorescent imaging improves the detection of malignant (growing in an uncontrolled way) tissue in adult subjects undergoing prostatectomy and lymph node dissection for biopsy confirmed prostate cancer.

The U.S. Food and Drug Administration (FDA) has approved the targeted imaging agent pafolacianine (Cytalux) for use in ovarian cancer (2021) and lung cancer surgery (2022.)

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Key information

Age range

18 year and older

Sex eligibility

Male

Study type

Interventional

Phase

Phase 2

Primary location

IU Health Joe and Shelly Schwarz Cancer Center, Carmel, Indiana, United States

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About this study

This is an open label trial in up to 15 subjects with biopsy confirmed prostate cancer (PCa) who have been scheduled to undergo a laparoscopic radical prostatectomy with or without robotic assistance, with pelvic lymph node dissection. This is a non-intervention trial to assess the accuracy of an imaging agent, folate targeted fluorescent dye (pafolacianine), during a standard of care radical prostatectomy.

Qualifying subjects will be Grade Group 3 to 5 (>/= cT3) with either suspected extraprostatic disease (EPD) (extracapsular extension (ECE) and/or seminal vesicle infiltration (SVI)), or suspected lymph node metastasis (clinical stage cN1, or by magnetic resonance imaging (mriN+), or by Prostate Specific Membrane Antigen positron emission tomography (PSMA PET+).

Whether using an anterior or a posterior approach, the tissues planned for removal will be visualized first under normal light, and their locations marked on a provided template. All additional suspicious tissue or nodes will be similarly marked, whether removed or not. Prior to removal, the field must be illuminated with Near Infrared light (NIR) and fluorescent tissues must be marked on the template. This may proceed in an iterative fashion, switching from first normal light to NIR as the surgical field expands.

NIR imaging must be conducted in the timeframe of one hour to twenty-four hours following IV infusion of pafolacianine. Lymphatics to be examined are, at a minimum, the external iliac, internal iliac and obturator fossa, and common iliac. Fluorescence positive nodules and nodes will be removed at the surgeon's discretion and sent as labeled (specimen number, tissue, location) specimens to pathology without designation of florescence. Ink dots should ideally be applied to the spot suspected of being cancerous.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Signed and dated informed consent form and HIPAA form
  • Male subjects 18 years of age and older
  • Known primary prostate cancer
  • Grade Group 3 to 5 (≥cT3) with either:
  • suspected extraprostatic disease (EPD) (extracapsular extension (ECE) and/or seminal vesicle infiltration (SVI)), or 3 or more biopsy cores of grade group 3-5;
  • suspected lymph node metastasis (clinical stage cN1, or by magnetic resonance imaging (mriN+), or by Prostate Specific Membrane Antigen positron emission tomography (PSMA PET+));
  • or both.
  • Planned to undergo a standard of care laparoscopic prostatectomy with or without robotic assistance, and lymph node dissection
  • Ability to understand the requirements of the study and agree to abide by the study restrictions and to return for the required assessments
  • Agree to stop folate or folic acid supplements at least 48 hours prior to injection of study agent

Exclusion criteria

  • The surgeon plans to perform an extraperitoneal approach
  • Any medical condition that in the opinion of the investigators could potentially jeopardize the safety of the subject
  • History of anaphylactic reactions to products containing indocyanine green
  • History of allergy to any of the components of PAFOLACIANINE

Treatment and study plan

Cytalux™ (pafolacianine) for fluorescent imaging

Drug

Cytalux™ (pafolacianine) injection: folate analog ligand conjugated with an indole cyanine green-like dye for real-time cancer margin status.

This is used in conjunction with appropriate imaging system.

Image guided surgery

Procedure

prostatectomy using appropriate imaging system

Primary outcomes

  1. Detection of residual cancer

    Time frame: Day of surgery (visit 2)

    The proportion of subjects who have a Clinically Significant Event (CSE). A CSE is a composite endpoint defined as at least one of the following outcomes:

    • One or more resected "NIR only" positive lymph nodes that contain metastatic disease as confirmed by pathology.
    • Histologically confirmed cancer in resected "NIR only" residual non-nodal soft tissue following prostatectomy.

Secondary outcomes

  1. Treatment change

    Time frame: Day of surgery (visit 2)

    To evaluate the proportion of subjects whose surgical procedure changed in scope from the planned surgery based on the use of PAFOLACIANINE with NIR imaging.

  2. Differences in sensitivity and specificity of lesions

    Time frame: Day of surgery (visit 2)

    T evaluate proportion of lesions that are either: fluorescence positive, and prostate cancer positive; fluorescence positive but cancer negative; fluorescence negative but cancer positive; or, fluorescence negative and cancer negative.

Sponsors and collaborators

Lead sponsor

Indiana University

Other

Collaborators

  • On Target Laboratories, LLC

Registry information

Official study title

An Investigator Sponsored Study to Investigate the Safety and Efficacy of CYTALUX™ (PAFOLACIANINE) INJECTION for the Intraoperative Imaging of Prostate Cancer

Important dates

Study start
2024
Primary completion
2025
Study completion
2025
First posted
May 30, 2024
Registry last updated
Jun 1, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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