Gastrointestinal Cancers Symposium (ASCO GI)

Nivolumab in combination with chemotherapy or ipilimumab maintained a clinically meaningful overall survival benefit vs chemotherapy alone in patients with treatment-naïve advanced esophageal squamous cell carcinoma.

The combination of nivolumab (Opdivo) and chemotherapy continued to provide a clinically meaningful long-term survival benefit and deeper responses than chemotherapy alone in previously untreated patients with advanced gastric cancer, gastroesophageal junction cancer, and esophageal adenocarcinoma, according to 3-year follow-up data from the phase 3 CheckMate-649 trial.

Neoadjuvant treatment with the combination of tremelimumab and durvalumab produced responses and was well tolerated in patients with mismatch repair–deficient and microsatellite instability–high, Epstein-Barr virus–negative gastric or gastroesophageal junction adenocarcinoma.

Clinicopathological features of HER2-low advanced gastric cancer were distinct and distinguishable from those of HER2-positive or -negative disease, according to retrospective findings from a single-institution study that were presented at the 2022 Gastrointestinal Cancers Symposium.

Reviewing some of the most talked about abstracts that were presented at the 2022 Gastrointestinal Cancers Symposium.

The safety and tolerability of TST001 is under investigation as a potential treatment option for patients with gastric/gastroesophageal junction cancer and other locally advanced or metastatic solid tumors as part of a phase 1 trial.

The addition of nivolumab to mFOLFOX6 and bevacizumab failed to demonstrate a statistically significant improvement in progression-free survival vs mFOLFOX6 and bevacizumab alone in previously untreated patients with metastatic colorectal cancer, according to findings from the phase 2/3 CheckMate 9X8 trial.

Trastuzumab deruxtecan demonstrated durable responses and a safety profile that was consistent with findings from the primary analysis of the phase 2 DESTINY-CRC01 trial in pretreated patients with HER2-expressing metastatic colorectal cancer, according to updated results of the study.

The addition of nivolumab to encorafenib and cetuximab elicited a high response rate and an acceptable safety profile in patients with refractory microsatellite stable, BRAF V600E–mutant metastatic colorectal cancer, according to findings from a phase 1/2 trial.

The use of pembrolizumab plus binimetinib and bevacizumab in patients with microsatellite-stable, treatment-refractory metastatic colorectal cancer induced a median progression-free survival of 5.8 months, according to preliminary findings from a phase 2 trial.

Onvansertib in combination with irinotecan, fluorouracil, and folinic acid, plus bevacizumab, demonstrated encouraging efficacy and was well-tolerated in patients with KRAS-mutated metastatic colorectal cancer.

Transarterial chemoembolization plus lenvatinib led to a significant improvement in overall survival vs lenvatinib alone as frontline therapy in patients with advanced hepatocellular carcinoma, according to findings from the phase 3 LAUNCH trial.

Do-Youn Oh, MD, PhD, discusses the results of the phase 3 TOPAZ-1 trial in advanced biliary tract cancer.

David S. Hong, MD, discusses the efficiency of the ongoing phase 1/2 CodeBreaK 101 trial in KRAS G12C-mutated advanced colorectal cancer and other solid tumors.

Tanios S. Bekaii-Saab, MD, FACP, discusses the updated results of the ongoing phase 1/2 KRYSTAL-1 trial in KRAS G12C-mutated gastrointestinal cancers, including pancreatic ductal adenocarcinoma.

The combination of olaparib and pembrolizumab demonstrated acceptable safety and an manageable adverse effect profile in patients with advanced cholangiocarcinoma who had received prior gemcitabine-based therapy, according to findings from a phase 2 trial.

Updated findings from the KEYNOTE-590 study confirmed the clinical benefit of the combination of pembrolizumab and chemotherapy as a treatment for patients with locally advanced and metastatic esophageal cancer.

Thomas A. Abrams, MD, discusses the rationale for the ongoing phase 1/2 COSMIC-021 trial in microsatellite stable and mismatch repair proficient colorectal cancer.

Kanwal P.S. Raghav, MBBS, MD, discusses the rationale for the ongoing phase 2 DESTINY-CRC02 trial in HER2-overexpressing metastatic colorectal cancer.

Transarterial chemoembolization combined with lenvatinib plus sintilimab was safe and effective for patients with unresectable hepatocellular carcinoma.

Lenvatinib was effective in treating patients with recurrent hepatocellular carcinoma after liver transplantation and demonstrated manageable toxicities.

Nivolumab plus chemotherapy demonstrated a durable survival benefit for patients with gastric or gastroesophageal junction cancer, according to updated findings from the CheckMate 649 trial.

Initial treatment with lenvatinib in patients with Barcelona Clinic Liver Cancer stage B2 hepatocellular carcinoma helped prolong survival.

Sintilimab plus standard-of-care chemotherapy failed to demonstrate a significant improvement in overall survival and progression-free survival vs standard-of-care chemotherapy alone but did result in an improved objective response rate in patients with metastatic or recurrent pancreatic adenocarcinoma, according to findings from the phase 3 CISPD3 trial.

The oral fluoropyrimidine derivative S-1 led to improved survival when used as adjuvant therapy compared with surgery alone in patients with biliary tract cancers.

The combination of pembrolizumab plus best supportive care elicited improved overall survival and overall response rates as second-line therapy in patients from Asia with advanced hepatocellular carcinoma.

Adagrasib monotherapy demonstrated encouraging clinical activity in patients with previously treated pancreatic ductal adenocarcinoma and other non–colorectal gastrointestinal tumors that harbor KRAS G12C mutations.

Although pembrolizumab monotherapy showed noninferiority to chemotherapy for overall survival in patients with advanced gastric or gastroesophageal junction adenocarcinoma and a PD-L1 combined positive score of 1 or higher, and a clinically meaningful benefit over chemotherapy in those with a CPS of 10 or higher, pembrolizumab plus chemotherapy failed to show superiority over chemotherapy alone in either subset.