Arm 1 ( Phase 2/3 Run in ):
PRV111: Topical Locoregional Delivery Placed Over the Tumor Region Primary Endpoint: Overall Response Rate (ORR) Primary Objective: Demonstrate the safety and efficacy of PRV111 in patients with Carcinoma in Situ (CIS) (WHO 2017)
Arm 2 (Phase 1) PRV211: Intraoperative Locoregional Delivery Placed into the Resected Tumor Bed Primary Endpoint: Safety Primary Objective: Determine Safety of PRV211 in intraoperative setting
Arm 3 (Phase 1/2) PRV131: Intratumoral Injectable delivery into the Tumor Primary Endpoint: Safety and Objective Response Rate (ORR) Primary objective: Determine a safe and effective dose for PRV131 intratumoral injectable
Subject Assignment: Subjects will be assigned to Arm 1, Arm 2, or Arm 3 of this study based on disease staging Arm 1: Pathologically proven and clinically confirmed Tis/CIS of the lip or oral cavity Arm 2: Pathologically proven and clinically confirmed T1-T3, Nx, M0 of the lip or oral cavity Arm 3a: Histologically confirmed squamous cell carcinoma (SCC) of the oral cavity, classified as clinical stage T1-T3, N0-1, M0 Arm 3b: Histologically confirmed malignant tumor in the lungs (primary or secondary), classified as clinical stage T1-2, N0, M0
Tumors for which the cytological and architectural changes upon histopathological assessment warrant surgical intervention
Adult subjects, men and women, defined by age ≥18 years at the time of screening.
Tumor must be accessible, with no evidence of infection or active bleeding.
Tumor is amenable to surgical resection within 8 weeks of screening visit (Visit 0).
Surgical Eligibility: Not eligible for standard-of-care (SOC) surgery.
Renal and Hepatic Function: Abnormal renal and hepatic functions as determined by the investigator.
Cardiac Function: Corrected QT interval (QTc) > 470 ms for women and > 450 ms for men.
Bone Involvement: Known bone involvement by the tumor (Stage T4).
Parallel
PRV211 (Intraoperative Cisplatin System)
DrugPRV211 system is comprised of two parts, a liquid permeation enhancer (PE) and cisplatin patch. The permeation is brushed onto the resected tumor bed and after 5 minutes the patch can be applied directly over the same area. Apply up to 2 layers of the PRV211 system to the tumor bed post-resection. The duration of the PRV211 treatment takes approximately 10-20 minutes and then the surgeon can continue as planned with the rest of the standard of care procedure. The proposed starting dose is 0.5 mg/cm2 of cisplatin on the tumor bed. This approach can be safe and effective in preventing locoregional recurrence after surgery and eliminating high-risk factors for local recurrence, such as dysplasia at the margins.
PRV111 (Cisplatin Transmucosal System)
DrugPRV111 (Cisplatin Transmucosal System) is a thin, 2-layer, matrix-type, transmucosal patch consisting of a chitosan matrix layer embedded with cisplatin loaded chitosan particles (CLPs) and a non-woven fabric adhesive unidirectional backing, which is applied to the matrix layer during manufacturing. The patch is self-adhesive. In addition to the PRV111 patch, a separately packaged Permeation Enhancer (PE) Powder for Reconstitution used in conjunction with PRV111. The reconstituted PE Solution is intended to improve the absorption of the cisplatin active ingredient and will be applied prior to patch application.
PRV131 (Cisplatin Intratumoral Injectable)
DrugPRV131 is a nanoparticle-based cisplatin formulation designed for intratumoral administration. The product is supplied as a lyophilized powder and reconstituted with a separately packaged diluent to form a suspension for injection. The reconstituted suspension is administered directly into the tumor, with dosing customized based on tumor size and injection site distribution. Upon intratumoral administration, the nanoparticles facilitate deep tumor penetration and localized drug release, enabling high local cisplatin concentrations while minimizing systemic exposure.
Overall Response Rate (ORR)
Proportion of treated tumors that have a response to PRV111 treatment. Response is defined as either or both: 1) histopathological downgrade of the disease such as partial or complete response as determined by post-treatment biopsies compared to baseline, or 2) clinically measurable tumor volume reduction from baseline of 30% or more from baseline.
Safety assessed via dose-limiting toxicities
Determine a safe dose of PRV211 (Intraoperative Cisplatin System) under the conditions of the trial. For the purpose of safety detection, if greater than 33% of subjects being evaluated for safety present with dose-limiting toxicities (DLTs), the study drug is deemed unsafe.
Event Free Survival
An event is defined as: salvage surgery, locoregional recurrence at 12 months or death due to any cause.
Pharmacokinetics: platinum levels in blood
whole blood samples will be taken to quantify the amount of cisplatin present.
Click on the lead sponsor to view all of their trials.
Privo Technologies
Lead sponsor
National Cancer Institute (NCI)
Collaborator
