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

Johns Hopkins Medicine

Status

Conditions: Prostate Cancer

Treatments: Combination Product: X-PACT

Study type: Expanded Access

Funder types: Other; Industry

Identifiers

NCT06836648

SIBCOM2502sp

IRB00482834 (Other Identifier)

Details and patient eligibility

About

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.

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

The patient is willing and able to provide informed consent. Only the patient for whom this clinical study/experimental treatment was designed will be given the investigational drug under the treatment of the PI. No other patient is authorized to participate in or to receive treatment under this treatment protocol.

Exclusion criteria

Not applicable