Clinical Edge Journal Scan Commentary: Gastric Cancer, May 2022

There have been eff orts to augment the activity of perioperative chemotherapy using antiangiogenic agents. In the advanced setting, studies with antiangiogenic agents have had mixed results. Ramucirumab in combination with paclitaxel is FDA-approved in the second-line setting, but a subsequent study in the first line-setting showed no improvement from the addition of ramucirumab. ^4,7 In the preoperative setting, the role of ramucirumab in combination with chemotherapy was evaluated in a phase 2 study. Although a hint of activity was seen, there was increased toxicity, especially in Siewert type I tumors. ⁸ The phase 2 study by Tang and colleagues enrolled 32 patients with resectable gastric and gastroesophageal juncture adenocarcinoma who received neoadjuvant oxaliplatin, capecitabine, and apatinib. Apatinib is a small-molecule tyrosine kinase inhibitor with highly selective affinity to vascular endothelial growth factor receptor 2. The treatment had manageable toxicity, with hypertension being the most common adverse event, as expected. Early signs of potential clinical efficacy were seen (pathologic complete response and pathologic response were achieved in 6.3% and 34.4% of the patients, respectively), but the true contribution from the addition of apatinib can be established only in a prospective randomized study. For now, chemotherapy alone remains the standard perioperative treatment, although ongoing studies are evaluating the addition of immune checkpoint inhibitors in this setting ( NCT03221426, NCT04592913). These types of agents are probably more likely than antiangiogenic agents to become part of standard treatment in the perioperative setting.

Additional References

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