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Gastric Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI] - Stage IV and Recurrent Gastric Cancer


Whether the CF regimen should be considered as an index regimen for the treatment of patients with metastatic gastric cancer is the subject of debate.[17] The results of a study that randomly assigned 245 patients with metastatic gastric cancer to receive CF, FAMTX, or ELF demonstrated no significant difference in response rate, progression-free survival, or OS between the arms.[7] Grades 3 and 4 neutropenia occurred in 35% to 43% of patients on all arms, but severe nausea and vomiting was more common in patients in the CF arm and occurred in 26% of those patients.[7][Level of evidence: 1iiDiv]

In an open-label, international phase III trial, patients with HER2-positive metastatic, inoperable locally advanced, or recurrent gastric or gastroesophageal junction cancer were randomly assigned to chemotherapy with or without the anti-HER2 monoclonal antibody trastuzumab.[18] HER2 positivity was defined as either 3+ staining by IHC or a HER2 to CEP17 ratio of two or more using FISH. Tumors from 3,665 patients were HER2 tested; of the patients, 810 were positive (22%) and 594 met eligibility criteria for randomization. Chemotherapy consisted of cisplatin plus 5-FU or capecitabine chosen at the investigator's discretion. The study treatment was administered every 3 weeks for six cycles, and trastuzumab was continued every 3 weeks until disease progression, unacceptable toxicity, or withdrawal of consent. Crossover to trastuzumab at disease progression was not permitted. Median OS was 13.8 months (95% CI, 12–16) in patients assigned to trastuzumab and 11.1 months (95% CI, 10–13) in patients assigned to chemotherapy alone (HR, 0.74; 95% CI, 0.60–0.91; P = .0046).[18][Level of evidence: 1iiA] There was no significant difference in rates of any adverse event, and cardiotoxicity was equally rare in both arms.

When patients develop progression of disease after first-line chemotherapy, there is no standard treatment option. Investigators in Korea randomly assigned patients with advanced gastric cancer who had received one or two prior chemotherapy regimens involving both a fluoropyrimidine and a platinum agent to either salvage chemotherapy or best supportive care in a 2:1 fashion.[19] Salvage chemotherapy consisted of either docetaxel (60 mg/m2 every 3 weeks) or irinotecan (150 mg/m2 every 2 weeks) and was left to the discretion of the treating physicians. Of the 202 patients enrolled, 133 received salvage chemotherapy and 69 received best supportive care. Median OS was 5.3 months in the group that received salvage chemotherapy and 3.8 months in the group that received best supportive care (HR, 0.657; P = .007). There was no difference in median OS between docetaxel and irinotecan (5.2 months vs. 6.5 months, P = .116).[19][Level of evidence: 1iiA]


WebMD Public Information from the National Cancer Institute

Last Updated: February 25, 2014
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