Gastric Adenocarcinoma and Gastroesophageal Junction Adenocarcinoma

This study is a randomized, controlled, open-label phase III clinical trial, aims to compare the efficacy and safety of Retlirafusp alfa injection plus CAPOX versus the investigator's choice of anti-PD-1 antibody plus CAPOX as first-line treatment in patients with advanced gastric cancer (GC) or gastroesophageal junction cancer (GEJC) with liver metastases

This study is a prospective, randomized, two-cohort trial designed to evaluate the efficacy and safety of two regimens in the treatment of gastric or gastroesophageal junction adenocarcinoma with peritoneal metastasis: SHR-1701 combined with intravenous and intraperitoneal paclitaxel plus S-1, or SHR-1701 combined with CAPOX.

This study examines whether adding the drug Zolbetuximab to an existing treatment (Paclitaxel and Ramucirumab) can improve patients' survival. The goal is to see if this combination works better for patients whose tumours contain a specific protein (CLDN18.2). The results will be compared to past patient data from those who only received the standard treatment. Zolbetuximab (Vyloy) is a cancer medicine that is used to treat adults with gastric or gastro-esophageal junction adenocarcinoma (a type of cancer of the stomach or the transition between the stomach and esophagus). Zolbetuximab will be administered via an intravenous infusion in combination with Paclitaxel and Ramucirumab (Cyramza) (two other cancer drugs that are the standard treatment for this condition). Treatment will take place at regular intervals in the hospital. In addition to treatment,patients will undergo a tumour biopsy. While the biopsy procedure may cause some discomfort or pain, it will only be performed if medically justifiable. Patients participation in the study will continue as long as they receive treatment and the disease does not worsen. The overall duration of the study, for all patients, will span several years.

Cancer of the stomach and oesophagus is among the world's top five cancers. Survival rates are very poor as the disease presents late and early symptoms are non-specific. The study team has developed a non-invasive test for cancers of the stomach and oesophagus based on the detection of volatile organic compounds in exhaled breath. These compounds are known to be produced by both cancers as well as cancer associated bacteria within the gut. The proposed innovation is to improve the accuracy of this test by investigating whether simple metabolic substrates can increase the production of these volatile organic compounds by both the tumour and its associated bacteria.

This is a multicentre, Phase Ib/II Clinical Study of AK109 and AK104 With or Without Chemotherapy in Second-line Treatment of Advanced Gastric Adenocarcinoma or Gastroesophageal Junction Adenocarcinoma .