Clinical Research Directory

Dynamic ctDNA-Guided Adjuvant Therapy in cStage III and IVA Gastric or Gastroesophageal Junction Adenocarcinoma

This is a single-center, prospective, exploratory study evaluating the use of dynamic circulating tumor DNA (ctDNA) monitoring in the postoperative adjuvant treatment setting for patients with stage III or stage IVA gastric or gastroesophageal junction adenocarcinoma. After curative-intent surgery, patients remain at risk of disease recurrence. Postoperative treatment decisions are currently based on clinicopathological factors, which may not fully reflect minimal residual disease. ctDNA is a blood-based biomarker that can detect tumor-derived DNA fragments and may provide additional information on recurrence risk. In this study, ctDNA will be assessed at predefined perioperative and postoperative time points using peripheral blood samples. The primary objective is to evaluate 1-year disease-free survival. Secondary objectives include survival outcomes, safety, and longitudinal changes in ctDNA status. The findings of this exploratory study may inform future research on ctDNA-guided postoperative management in gastric cancer.

First-in-Human Study of PLX-61639 in Locally Advanced or Metastatic Solid Tumors

A multicenter, single-arm, first-in-human study to investigate the safety, pharmacokinetics, and preliminary antitumor activity of PLX-61639 in participants with locally advanced or metastatic, relapsed/refractory, SMARCA4-deficient solid tumors who are intolerant of or have failed available, approved therapies. The study will be conducted in 3 parts: dose escalation (Part 1), dose optimization (Part 2), and cohort expansion (Part 3). Each part of the study will consist of a Screening Phase lasting up to 28 days during which participants will be assessed for eligibility, a Treatment Phase beginning on Cycle 1 Day 1 and consisting of consecutive 28-day cycles, an End of Treatment Visit, and a Post-Treatment Follow-Up Phase. Participants will receive their assigned dose of PLX-61639 administered orally, once daily until progression/relapse, intolerance, death, or withdrawal from study treatment by the Investigator or participant.

A Phase 1/1b of RNDO-564 Single Agent or in Combination With Pembrolizumab in Bladder Cancer and Other Solid Tumors Associated With Nectin-4

The main goal of this study is to evaluate how safe and tolerable RNDO-564 is and to identify the best dose of RNDO-564 as a single agent and in combination with pembrolizumab. The study is focused on participants with certain solid tumors that are in an advanced stage and have certain tumor makers. This will be done by measuring the side effects that participants experience and how severe they are. Additionally, the study will evaluate how RNDO-564 moves into, through, and out of the body and how the treatment affects the body. The second goal of this study is to evaluate how well RNDO-564 works by itself or in combination with pembrolizumab at treating participants' cancer. This will be done by measuring the number of participants who respond to the treatment. The length of time where the tumor does not grow or spread will also be measured. Participants will take RNDO-564 weekly on Days 1, 8 and 15 of a 21 day cycle. Participants in the combination arms will take RNDO-564 as described with pembrolizumab every 3 weeks.

A Study of ASP2138 Given by Itself or Given With Other Cancer Treatments in Adults With Stomach Cancer, Gastroesophageal Junction Cancer, or Pancreatic Cancer

Claudin 18.2 protein, or CLDN18.2 is a protein found on cells in the digestive system. It is also found on some tumors. Researchers are looking at ways to attack CLDN18.2 to help control tumors. ASP2138 is thought to bind to CLDN18.2 and a protein on a type of immune cell called a T-cell. This "tells" the immune system to attack the tumor. ASP2138 is a potential treatment for people with stomach cancer, gastroesophageal junction cancer (GEJ cancer) or pancreatic cancer. GEJ is where the tube that carries food (esophagus) joins the stomach. Before ASP2138 is available as a treatment, the researchers need to understand how it is processed by and acts upon the body. In this study, ASP2138 will either be given by itself, or given together with standard treatments for gastric, GEJ and pancreatic cancer. Pembrolizumab and mFOLFOX6, and ramucirumab and paclitaxel are standard treatments for gastric and GEJ cancer. mFOLFIRINOX is a standard treatment for pancreatic cancer. This information will help find a suitable dose of ASP2138 given by itself and together with the standard cancer treatments and to check for potential medical problems from the treatments. The main aims of the study are: * To check the safety of ASP2138 and how well people can tolerate medical problems during the study. * To find a suitable dose of ASP2138 to be used later in the study. * These are done for ASP2138 given by itself and when given together with the standard cancer treatments. Adults 18 years or older with stomach cancer, GEJ cancer, or pancreatic cancer can take part. Their cancer is locally advanced unresectable or metastatic. Locally advanced means the cancer has spread to nearby tissue. Unresectable means the cancer cannot be removed by surgery. Metastatic means the cancer has spread to other parts of the body. There should also be the CLDN18.2 marker in a tumor sample. People cannot take part if they need to take medicines to suppress their immune system, have blockages or bleeding in their gut, have specific uncontrollable cancers, have specific infections, have a condition such as hemophagocytic lymphohistiocytosis (HLH) which is when the body over-reacts to a "trigger" such as infection, or have a specific heart condition ("New York Heart Association Class III or IV"). Phase 1: Lower to higher doses of ASP2138 * ASP2138 is either given through a vein (intravenous infusion) or just under the skin (subcutaneous injection). * Different small groups are given lower to higher doses of ASAP2138. * ASP2138 is either given by itself, or given with 1 of 3 standard treatments: * Pembrolizumab and mFOLFOX6 (first treatment for gastric GEJ cancer) * Ramacirumab and paclitaxel (Second treatment for gastric or GEJ cancer) * ASP2138 with mFOLFIRINOX (first treatment for pancreatic cancer) Phase 1b: doses of ASP2138 worked out from Phase 1 * ASP2138 is either given through a vein or just under the skin. This depends on the findings from Phase 1. * People with gastric cancer, GEJ cancer or pancreatic cancer are given doses of ASP2138, worked out from Phase 1. * This includes doses of ASP2138 given by itself and ASP2138 given with the standard cancer treatments. * The standard cancer treatments given depends on the type of cancer they have. End of treatment visit: This is 7 days after final dose of study treatment or if the study doctor decides to stop the person's treatment. People who have locally advanced unresectable pancreatic cancer will not receive ASP2138 by itself.

An Open Label Phase 2 Study of Total Neoadjuvant Therapy (TNT) Consisting of FLOT With Pembrolizumab and Short Radiation for Patients With Locally Advanced Gastroesophageal Junction Adenocarcinoma

This study is to evaluate the effectiveness of treatment for esophagogastric junction carcinoma, total neoadjuvant therapy (TNT) including pembrolizumab and FLOT is conducted, aiming to choose between surgery or organ preservation treatment strategies.