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Single Patient Compassionate Use of X-PACT in Salvage Treatment of Prostate Cancer

NCT06836648 · Status: AVAILABLE · Type: EXPANDED_ACCESS

Last updated 2026-02-25

No results posted yet for this study

Summary

Due to the subject's lack of conventional treatment options, a treatment plan using X-PACT administered intra-tumorally is proposed.

X-PACT (X-ray Psoralen Activated Cancer Therapy) is comprised of a phosphor device (an energy modulation agent), methoxsalen sterile solution (a psoralen), X-ray energy and represents a potential new approach for the treatment of solid tumors.

Methoxsalen is a psoralen found in the seeds of the Ammi majus (Umbelliferae) plant.

Importantly, methoxsalen (whether formulated as the sterile solution \[Uvadex®\] or as a hard gelatin capsule \[8-MOP®\]) can promote a strong long-term clinical response, as observed in the treatment of cutaneous T cell lymphoma (CTCL) utilizing extracorporeal photopheresis (ECP) and is approved by the United States Food and Drug Administration \[US FDA\] for this indication. In ECP, malignant CTCL cells are irradiated with UVA light in the presence of methoxsalen and then re-administered to the patient.

X-PACT may offer the potential for local control of primary or metastatic disease via administration of the combination product of methoxsalen and powerful energy converters

(Phosphors) when activated by x-ray beam. In addition, there is numerous data in support of an immunogenic role for activated methoxsalen. The cytotoxic and immunogenic effects of psoralens are often attributed to psoralen mediated photo-adduct DNA damage \[1\]. A principle mechanism underlying the long term immunogenic clinical response likely derives from psoralen induced tumor cell cytotoxicity and uptake of the apoptotic cells by immature dendritic cells, in the presence of inflammatory cytokines \[2, 3 4, 5\]. However, photochemical modification of proteins and other cellular components can also impact the antigenicity and potential immunogenicity of treated cells \[6\]. The diversity and potency of psoralen application is further illustrated by recent success using psoralen in the development of virus vaccines \[7\]. The immunogenic activity of methoxsalen supports a potential abscopal effect for X-PACT particularly as it incorporates both radiation and an immunotherapeutic.

Conditions

Interventions

COMBINATION_PRODUCT

X-PACT

X-PACT is comprised of a phosphor device, the drug methoxsalen sterile solution and X-ray energy. The dose of methoxsalen sterile solution per injection will vary per patient and will remained fixed across injections within each patient as it is based on the applicable tumor volume at baseline. Immediately after each injection of the combination product, patients will be exposed to an X-ray beam delivered via a LINAC (and thus targeted at the tumor) at a fixed dose to activate the combination product.

Sponsors & Collaborators

  • Immunolight, LLC

    collaborator INDUSTRY

  • Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins

    lead OTHER

Principal Investigators

  • Panagis Galiatsatos, MD · Johns Hopkins University

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Countries

  • United States

Study Locations

More Related Trials

Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT06836648 on ClinicalTrials.gov