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Gastric Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI]Purpose of This PDQ SummaryThis PDQ cancer information summary for health professionals provides comprehensive, peer-reviewed, evidence-based information about the treatment of gastric cancer. This summary is reviewed regularly and updated as necessary by the PDQ Adult Treatment Editorial Board. Information about the following is included in this summary:
This summary is intended as a resource to inform and assist clinicians who care for cancer patients. It does not provide formal guidelines or recommendations for making health care decisions. Some of the reference citations in the summary are accompanied by a level-of-evidence designation. These designations are intended to help readers assess the strength of the evidence supporting the use of specific interventions or approaches. The PDQ Adult Treatment Editorial Board uses a formal evidence ranking system in developing its level-of-evidence designations. Based on the strength of the available evidence, treatment options are described as either "standard" or "under clinical evaluation." These classifications should not be used as a basis for reimbursement determinations. This summary is available in a patient version, written in less technical language, and in Spanish. General Information About Gastric CancerRelated Summaries Other PDQ summaries containing information related to gastric cancer include:
Statistics Estimated new cases and deaths from gastric cancer in the United States in 2009:[1]
Epidemiology Management of adenocarcinoma histology, which accounts for 90% to 95% of all gastric malignancies, is discussed in this summary. The site of cancer origin within the stomach has changed in frequency in the United States over recent decades.[2] Cancer of the distal half of the stomach has been decreasing in the United States since the 1930s. However, in the last 2 decades, the incidence of cancer of the cardia and gastroesophageal junction has been rapidly rising. The incidence of this cancer has increased dramatically, especially in patients younger than 40 years. Risk Factors In the United States, gastric cancer ranks 14th in incidence among the major types of cancer malignancies. While the precise etiology is unknown, acknowledged risk factors for gastric cancer include:[3,4,5]
Prognosis The prognosis of patients with gastric cancer is related to tumor extent and includes both nodal involvement and direct tumor extension beyond the gastric wall.[6,7] Tumor grade may also provide some prognostic information.[8] In localized distal gastric cancer, more than 50% of patients can be cured. However, early-stage disease accounts for only 10% to 20% of all cases diagnosed in the United States. The remaining patients present with metastatic disease in either regional or distant sites. The overall survival rate in these patients at 5 years ranges from almost no survival for patients with disseminated disease to almost 50% survival for patients with localized distal gastric cancers confined to resectable regional disease. Even with apparent localized disease, the 5-year survival rate of patients with proximal gastric cancer is only 10% to 15%. Although the treatment of patients with disseminated gastric cancer may result in palliation of symptoms and some prolongation of survival, long remissions are uncommon. Gastrointestinal stromal tumors occur most commonly in the stomach. (Refer to the PDQ summary on Adult Soft Tissue Sarcoma Treatment for more information.) References:
Cellular Classification of Gastric CancerThere are two major types of gastric adenocarcinoma:
Intestinal adenocarcinomas are well differentiated, and the cells tend to arrange themselves in tubular or glandular structures. The terms tubular, papillary, and mucinous are assigned to the various types of intestinal adenocarcinomas. Rarely, adenosquamous cancers can occur. Diffuse adenocarcinomas are undifferentiated or poorly differentiated, and they lack a gland formation. Clinically, diffuse adenocarcinomas can give rise to infiltration of the gastric wall (i.e., linitis plastica). Some tumors can have mixed features of intestinal and diffuse types. Stage Information for Gastric CancerThe American Joint Committee on Cancer (AJCC) has designated staging by TNM classification.[1,2,3] TNM Definitions PRIMARY TUMOR (T)
*A tumor may penetrate the muscularis propria with extension into the gastrocolic or gastrohepatic ligaments, or into the greater or lesser omentum, without perforation of the visceral peritoneum covering these structures. In this case, the tumor is classified T2. If there is perforation of the visceral peritoneum covering the gastric ligaments or the omentum, the tumor should be classified T3. **The adjacent structures of the stomach include the spleen, transverse colon, liver, diaphragm, pancreas, abdominal wall, adrenal gland, kidney, small intestine, and retroperitoneum. ***Intramural extension to the duodenum or esophagus is classified by the depth of greatest invasion in any of these sites, including stomach. REGIONAL LYMPH NODES (N) The regional lymph nodes are the perigastric nodes, found along the lesser and greater curvatures, and the nodes located along the left gastric, common hepatic, splenic, and celiac arteries. For pN, a regional lymphadenectomy specimen will ordinarily contain at least 15 lymph nodes. Involvement of other intra-abdominal lymph nodes, such as the hepatoduodenal, retropancreatic, mesenteric, and para-aortic, is classified as distant metastasis.
*A designation of pN0 should be used if all examined lymph nodes are negative, regardless of the total number removed and examined. DISTANT METASTASIS (M)
AJCC Stage Groupings Stage 0
Stage IA
Stage IB
Stage II
Stage IIIA
Stage IIIB
Stage IV
References:
Treatment Option OverviewNote: Some citations in the text of this section are followed by a level of evidence. The PDQ editorial boards use a formal ranking system to help the reader judge the strength of evidence linked to the reported results of a therapeutic strategy. (Refer to the PDQ summary on Levels of Evidence for more information.) Radical surgery represents the standard form of therapy that has curative intent. However, the incidences of local failure in the tumor bed and regional lymph nodes, and distant failures via hematogenous or peritoneal routes, remain high.[1] As such, adjuvant external-beam radiation therapy with combined chemotherapy has been evaluated in the United States. In a phase III Intergroup trial (INT-0116), 556 patients with completely resected stage IB to stage IV (M0) adenocarcinoma of the stomach and gastroesophageal junction were randomly assigned to receive surgery alone or surgery plus postoperative chemotherapy (5-fluorouracil [5-FU] and leucovorin) and concurrent radiation therapy (45 Gy). With 5 years' median follow-up, a significant survival benefit was reported for patients who received adjuvant combined modality therapy.[2][Level of evidence: 1iiA] Median survival was 36 months for the adjuvant chemoradiation therapy group as compared to 27 months for the surgery-alone arm (P = .005). Three-year overall survival (OS) rates and relapse-free survival rates were 50% and 48%, respectively, with adjuvant chemoradiation therapy versus 41% and 31%, respectively, for surgery alone (P = .005). The rate of distant metastases was 32% for the surgery-alone arm and 40% for the chemoradiation therapy arm. Because distant disease remains a significant concern, the aim of the current Cancer and Leukemia Group B study (CALGB-80101) is to augment the postoperative chemoradiation regimen used in INT-0116. Neoadjuvant chemoradiation therapy such as in the RTOG-9904 trial also remains under clinical evaluation in the SWOG-S0425 trial.[3] Investigators in Europe evaluated the role of preoperative and postoperative chemotherapy without radiation therapy.[4] In the randomized phase III trial (MRC-ST02), patients with stage II or higher adenocarcinoma of the stomach or of the lower third of the esophagus were assigned to receive three cycles of epirubicin, cisplatin, and continuous infusion 5-FU before and after surgery or to receive surgery alone. Compared with the surgery group, the perioperative chemotherapy group had a significantly higher likelihood of progression-free survival (hazard ratio [HR] for progression, 0.66; 95% confidence interval [CI], 0.53–0.81; P < .001) and of OS (HR for death, 0.75; 95% CI, 0.60–0.93; P = .009). Five-year OS was 36.3%; 95% CI, 29 to 43 for the perioperative chemotherapy group and 23%; 95% CI, 16.6 to 29.4 for the surgery group.[4][Level of evidence: 1iiA] References:
Stage 0 Gastric CancerSTANDARD TREATMENT OPTIONS:
Stage 0 is gastric cancer confined to mucosa. Experience in Japan, where stage 0 is diagnosed frequently, indicates that more than 90% of patients treated by gastrectomy with lymphadenectomy will survive beyond 5 years. An American series has confirmed these results.[1] Current Clinical Trials Check for U.S. clinical trials from NCI's PDQ Cancer Clinical Trials Registry that are now accepting patients with stage 0 gastric cancer. The list of clinical trials can be further narrowed by location, drug, intervention, and other criteria. General information about clinical trials is also available from the NCI Web site. References:
Stage I Gastric CancerNote: Some citations in the text of this section are followed by a level of evidence. The PDQ editorial boards use a formal ranking system to help the reader judge the strength of evidence linked to the reported results of a therapeutic strategy. (Refer to the PDQ summary on Levels of Evidence for more information.) STANDARD TREATMENT OPTIONS:
Surgical resection including regional lymphadenectomy is the treatment of choice for patients with stage I gastric cancer.[1] If the lesion is not in the cardioesophageal junction and does not diffusely involve the stomach, subtotal gastrectomy is the procedure of choice, since it has been demonstrated to provide equivalent survival when compared with total gastrectomy and is associated with decreased morbidity.[3][Level of evidence: 1iiA] When the lesion involves the cardia, proximal subtotal gastrectomy or total gastrectomy (including a sufficient length of esophagus) may be performed with curative intent. If the lesion diffusely involves the stomach, total gastrectomy is required. At a minimum, surgical resection should include greater and lesser curvature perigastric regional lymph nodes. Note that in patients with stage I gastric cancer, perigastric lymph nodes may contain cancer. In patients with node-positive (T1 N1) and muscle-invasive (T2 N0) disease, postoperative chemoradiation therapy may be considered. A prospective multi-institution phase III trial (INT-0116) evaluating postoperative combined chemoradiation therapy versus surgery alone in 556 patients with completely resected stage IB to stage IV (M0) adenocarcinoma of the stomach and gastroesophageal junction reported a significant survival benefit with adjuvant combined modality therapy.[2][Level of evidence: 1iiA] With a median follow-up of 5 years, median survival was 36 months for the adjuvant chemoradiation therapy group as compared to 27 months for the surgery-alone arm (P = .005). Three-year overall survival and relapse-free survival rates were 50% and 48% with adjuvant chemoradiation therapy versus 41% and 31% for surgery alone (P = .005). However, only 36 patients in the trial had stage IB tumors (18 patients in each arm).[4] Since the prognosis is relatively favorable for patients with completely resected stage IB disease, the effectiveness of adjuvant chemoradiation therapy for this group is less clear. TREATMENT OPTIONS UNDER CLINICAL EVALUATION:
Current Clinical Trials Check for U.S. clinical trials from NCI's PDQ Cancer Clinical Trials Registry that are now accepting patients with stage I gastric cancer. The list of clinical trials can be further narrowed by location, drug, intervention, and other criteria. General information about clinical trials is also available from the NCI Web site. References:
Stage II Gastric CancerNote: Some citations in the text of this section are followed by a level of evidence. The PDQ editorial boards use a formal ranking system to help the reader judge the strength of evidence linked to the reported results of a therapeutic strategy. (Refer to the PDQ summary on Levels of Evidence for more information.) STANDARD TREATMENT OPTIONS:
Surgical resection with regional lymphadenectomy is the treatment of choice for patients with stage II gastric cancer.[1] If the lesion is not in the cardioesophageal junction and does not diffusely involve the stomach, subtotal gastrectomy is the procedure of choice. When the lesion involves the cardia, proximal subtotal gastrectomy or total gastrectomy may be performed with curative intent. If the lesion diffusely involves the stomach, total gastrectomy and appropriate lymph node resection may be required. The role of extended lymph node (D2) dissection is uncertain [4] and in some series is associated with increased morbidity.[5,6] Postoperative chemoradiation therapy may be considered for patients with stage II gastric cancer. A prospective multi-institution phase III trial (INT-0116) evaluating postoperative combined chemoradiation therapy versus surgery alone in 556 patients with completely resected stage IB to stage IV (M0) adenocarcinoma of the stomach and gastroesophageal junction reported a significant survival benefit with adjuvant combined modality therapy.[2][Level of evidence: 1iiA] With a median follow-up of 5 years, median survival was 36 months for the adjuvant chemoradiation therapy group as compared to 27 months for the surgery-alone arm (P = .005). Three-year overall survival (OS) and relapse-free survival rates were 50% and 48%, respectively, with adjuvant chemoradiation therapy versus 41% and 31%, respectively, for surgery alone (P = .005).The rate of distant metastases was 32% for the surgery-alone arm and 40% for the chemoradiation therapy arm. Because distant disease remains a significant concern, the aim of the current Cancer and Leukemia Group B study (CALGB-80101) is to augment the postoperative chemoradiation regimen used in INT-0116.[7] Neoadjuvant chemoradiation therapy remains under clinical evaluation such as in the SWOG-S0425 and RTOG-9904 trials.[8] Investigators in Europe evaluated the role of preoperative and postoperative chemotherapy without radiation therapy.[3] In the randomized phase III trial (MRC-ST02), patients with stage II or higher adenocarcinoma of the stomach or of the lower third of the esophagus were assigned to receive three cycles of epirubicin, cisplatin, and continuous infusion fluorouracil (ECF) before and after surgery or to receive surgery alone. Compared with the surgery group, the perioperative chemotherapy group had a significantly higher likelihood of progression-free survival (hazard ratio [HR] for progression, 0.66; 95% confidence interval [CI], 0.53–0.81; P < .001) and of OS (HR for death, 0.75; 95% CI, 0.60–0.93; P = .009). Five-year OS was 36.3%, 95% CI, 29 to 43 for the perioperative chemotherapy group and 23%, 95% CI, 16.6 to 29.4 for the surgery group.[3][Level of evidence: 1iiA] TREATMENT OPTIONS UNDER CLINICAL EVALUATION:
All newly diagnosed patients with stage II gastric cancer should be considered candidates for clinical trials. Current Clinical Trials Check for U.S. clinical trials from NCI's PDQ Cancer Clinical Trials Registry that are now accepting patients with stage II gastric cancer. The list of clinical trials can be further narrowed by location, drug, intervention, and other criteria. General information about clinical trials is also available from the NCI Web site. References:
Stage III Gastric CancerNote: Some citations in the text of this section are followed by a level of evidence. The PDQ editorial boards use a formal ranking system to help the reader judge the strength of evidence linked to the reported results of a therapeutic strategy. (Refer to the PDQ summary on Levels of Evidence for more information.) STANDARD TREATMENT OPTIONS:
All patients with tumors that can be resected should undergo surgery. As many as 15% of selected stage III patients can be cured by surgery alone, particularly if lymph node involvement is minimal (<7 lymph nodes). Postoperative chemoradiation therapy may be considered for patients with stage III gastric cancer. A prospective multi-institution phase III trial (INT-0116) evaluating postoperative combined chemoradiation therapy versus surgery alone in 556 patients with completely resected stage IB to stage IV (M0) adenocarcinoma of the stomach and gastroesophageal junction reported a significant survival benefit with adjuvant combined modality therapy.[1][Level of evidence: 1iiA] With a median follow-up of 5 years, median survival was 36 months for the adjuvant chemoradiation therapy group as compared to 27 months for the surgery-alone arm (P = .005). Three-year overall survival (OS) and relapse-free survival rates were 50% and 48%, respectively, with adjuvant chemoradiation therapy versus 41% and 31%, respectively, for surgery alone (P = .005). Because distant disease remains a significant concern, the aim of the current Cancer and Leukemia Group B study (CALGB-80101) is to augment the postoperative chemoradiation regimen used in the INT-0116 trial , for example, and the preoperative chemotherapy and chemoradiation therapy regimen used in the RTOG-9904 trial, as another example. Investigators in Europe evaluated the role of preoperative and postoperative chemotherapy without radiation therapy.[2] In the randomized phase III trial (MRC-ST02), patients with stage II or higher adenocarcinoma of the stomach or of the lower third of the esophagus were assigned to receive three cycles of epirubicin, cisplatin, and continuous infusion 5-fluorouracil (ECF) before and after surgery or to receive surgery alone. Compared with the surgery group, the perioperative chemotherapy group had a significantly higher likelihood of progression-free survival (hazard ratio [HR] for progression, 0.66; 95% confidence interval [CI], 0.53–0.81; P < .001) and of OS (HR for death, 0.75; 95% CI, 0.60–0.93; P = .009). Five-year OS was 36.3%; 95% CI, 29 to 43 for the perioperative chemotherapy group and 23%; 95% CI, 16.6 to 29.4 for the surgery group.[2][Level of evidence: 1iiA] TREATMENT OPTIONS UNDER CLINICAL EVALUATION:
All newly diagnosed patients with stage III gastric cancer should be considered candidates for clinical trials. Current Clinical Trials Check for U.S. clinical trials from NCI's PDQ Cancer Clinical Trials Registry that are now accepting patients with stage III gastric cancer. The list of clinical trials can be further narrowed by location, drug, intervention, and other criteria. General information about clinical trials is also available from the NCI Web site. References:
Stage IV Gastric CancerNote: Some citations in the text of this section are followed by a level of evidence. The PDQ editorial boards use a formal ranking system to help the reader judge the strength of evidence linked to the reported results of a therapeutic strategy. (Refer to the PDQ summary on Levels of Evidence for more information.) Treatment Options for Patients With No Distant Metastases (M0) STANDARD TREATMENT OPTIONS:
All patients with tumors that can be resected should undergo surgery. As many as 15% of selected stage IV patients can be cured by surgery alone, particularly if lymph node involvement is minimal (<7 lymph nodes). Postoperative chemoradiation therapy may be considered for patients with stage IV gastric cancer. A prospective multi-institution phase III trial (INT-0116) evaluating postoperative combined chemoradiation therapy versus surgery alone in 556 patients with completely resected stage IB to stage IV (M0) adenocarcinoma of the stomach and gastroesophageal junction reported a significant survival benefit with adjuvant combined modality therapy.[1][Level of evidence: 1iiA] With a median follow-up of 5 years, median survival was 36 months for the adjuvant chemoradiation therapy group as compared to 27 months for the surgery-alone arm (P = .005). Three-year overall survival (OS) and relapse-free survival rates were 50% and 48%, respectively, with adjuvant chemoradiation therapy versus 41% and 31%, respectively, for surgery alone (P = .005). Because distant disease remains a significant concern, the aim of the current Cancer and Leukemia Group B study (CALGB-80101) is to augment the postoperative chemoradiation regimen used in the INT-0116trial, for example, and the preoperative chemotherapy and chemoradiation therapy regimen used in the RTOG-9904 trial. Investigators in Europe evaluated the role of preoperative and postoperative chemotherapy without radiation therapy.[2] In the randomized phase III trial (MRC-ST02), patients with stage II or higher adenocarcinoma of the stomach or of the lower third of the esophagus were assigned to receive three cycles of epirubicin, cisplatin, and continuous infusion 5-fluorouracil (ECF) before and after surgery or to receive surgery alone. Compared with the surgery group, the perioperative chemotherapy group had a significantly higher likelihood of progression-free survival (hazard ratio [HR] for progression, 0.66; 95% confidence interval [CI], 0.53–0.81; P < .001) and of OS (HR for death, 0.75; 95% CI, 0.60–0.93; P = .009). Five-year OS was 36.3%; 95% CI, 29 to 43 for the perioperative chemotherapy group and 23%; 95% CI, 16.6 to 29.4 for the surgery group.[2][Level of evidence: 1iiA] TREATMENT OPTIONS UNDER CLINICAL EVALUATION:
All newly diagnosed patients with stage IV gastric cancer should be considered candidates for clinical trials. Treatment Options for Patients With Distant Metastases (M1) STANDARD TREATMENT OPTIONS:
Standard chemotherapy versus best supportive care for patients with metastatic gastric cancer has been tested in several clinical trials, and there is general agreement that patients who receive chemotherapy live for several months longer on average than patients who receive supportive care.[13,14,15][Level of evidence: 1iiA] During the last 20 years, multiple randomized studies evaluating different treatment regimens (monotherapy vs. combination chemotherapy) have been performed in patients with metastatic gastric cancer with no clear consensus emerging as to the best management approach. A meta-analysis of these studies demonstrated an HR of 0.83 for OS (95% CI, 0.74–0.93) in favor of combination chemotherapy.[16] Of all the combination regimens, ECF is often considered the reference standard in the United States and Europe. In one European trial, 274 patients with metastatic esophagogastric cancer were randomly assigned to receive either ECF or FAMTX.[17] The group who received ECF had a significantly longer median survival (8.9 vs. 5.7 months, P = .0009) than the FAMTX group.[17][Level of evidence: 1iiA] In a second trial that compared ECF with mitomycin, cisplatin, and 5-FU (MCF), there was no statistically significant difference in median survival (9.4 vs. 8.7 months, P = .315).[9][Level of evidence: 1iiA] An international collaboration of investigators randomly assigned 445 patients with metastatic gastric cancer to receive docetaxel, cisplatin, and 5-FU (DCF) or CF.[18] Time-to-treatment progression (TTP) was the primary endpoint. Patients who received DCF experienced a significantly longer TTP (5.6 months; 95% CI, 4.9–5.9; vs. 3.7 months; 95% CI, 3.4–4.5; HR, 1.47; 95% CI, 1.19–1.82; log-rank P < .001; risk reduction 32%). The median OS was significantly longer for patients who received DCF versus patients who received CF (9.2 months; 95% CI, 8.4–10.6; vs. 8.6 months; 95% CI, 7.2–9.5; HR, 1.29; 95% CI, 1.0–1.6; log-rank P = .02; risk reduction = 23%).[18][Level of evidence: 1iiA] There were high toxicity rates in both arms.[19] Febrile neutropenia was more common in patients who received DCF (29% vs. 12%), and the death rate on the study was 10.4% for patients on the DCF arm and 9.4% for patients on the CF arm. 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.[19] 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.[10] 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.[10][Level of evidence: 1iiDiv] TREATMENT OPTIONS UNDER CLINICAL EVALUATION:
Phase II studies evaluating irinotecan-based or oxaliplatin-based regimens demonstrate similar response rates and TTP to those found with ECF or CF, but the former may be less toxic.[20,21,22,23,24,25] There are conflicting data regarding relative efficacy of any one regimen for another. Ongoing studies are evaluating these newer regimens. Current Clinical Trials Check for U.S. clinical trials from NCI's PDQ Cancer Clinical Trials Registry that are now accepting patients with stage IV gastric cancer. The list of clinical trials can be further narrowed by location, drug, intervention, and other criteria. General information about clinical trials is also available from the NCI Web site. References:
Recurrent Gastric CancerSTANDARD TREATMENT OPTIONS:
Standard chemotherapy versus best supportive care for patients with metastatic gastric cancer has been tested in several clinical trials, and there is general agreement that patients who receive chemotherapy live for several months longer on average than patients who receive supportive care.[9,10,11][Level of evidence: 1iiA] During the last 20 years, multiple randomized studies evaluating different treatment regimens (monotherapy vs. combination chemotherapy) have been performed in patients with metastatic gastric cancer with no clear consensus emerging as to the best management approach. A meta-analysis of these studies demonstrated an HR of 0.83 for OS (95% CI, 0.74–0.93) in favor of combination chemotherapy.[12] Of all the combination regimens, ECF is often considered the reference standard in the United States and Europe. In one European trial, 274 patients with metastatic esophagogastric cancer were randomly assigned to receive either ECF or FAMTX.[13] The group who received ECF had a significantly longer median survival (8.9 vs. 5.7 months, P = .0009) than the FAMTX group.[13][Level of evidence: 1iiA] In a second trial that compared ECF with mitomycin, cisplatin, and 5FU (MCF), there was no statistically significant difference in median survival (9.4 vs. 8.7 months, P = .315).[5][Level of evidence: 1iiA] An international collaboration of investigators randomly assigned 445 patients with metastatic gastric cancer to receive docetaxel, cisplatin, and 5-FU (DCF) or CF.[14] Time-to-treatment progression (TTP) was the primary endpoint. Patients who received DCF experienced a significantly longer TTP (5.6 months; 95% CI, 4.9–5.9; vs. 3.7 months; 95% CI, 3.4–4.5; HR, 1.47; 95% CI, 1.19–1.82; log-rank P < .001; risk reduction 32%). The median OS was significantly longer for patients who received DCF versus patients who received CF (9.2 months; 95% CI, 8.4–10.6; vs. 8.6 months; 95% CI, 7.2–9.5; HR, 1.29; 95% CI, 1.0–1.6; log-rank P = .02; risk reduction = 23%).[14][Level of evidence: 1iiA] There were high toxicity rates in both arms.[15] Febrile neutropenia was more common in patients who received DCF (29% vs. 12%), and the death rate on the study was 10.4% for patients on the DCF arm and 9.4% for patients on the CF arm. 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.[15] 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.[6] 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.[6][Level of evidence: 1iiDiv] TREATMENT OPTIONS UNDER CLINICAL EVALUATION:
Phase II studies evaluating irinotecan-based or oxaliplatin-based regimens demonstrate similar response rates and TTP to those found with ECF or CF, but the former may be less toxic.[16,17,18,19,20,21] There are conflicting data regarding relative efficacy of any one regimen over another. Ongoing studies are evaluating these newer regimens. Current Clinical Trials Check for U.S. clinical trials from NCI's PDQ Cancer Clinical Trials Registry that are now accepting patients with recurrent gastric cancer. The list of clinical trials can be further narrowed by location, drug, intervention, and other criteria. General information about clinical trials is also available from the NCI Web site. References:
Get More Information From NCICALL 1-800-4-CANCER For more information, U.S. residents may call the National Cancer Institute's (NCI's) Cancer Information Service toll-free at 1-800-4-CANCER (1-800-422-6237) Monday through Friday from 9:00 a.m. to 4:30 p.m. A trained Cancer Information Specialist is available to answer your questions. CHAT ONLINE The NCI's LiveHelp® online chat service provides Internet users with the ability to chat online with an Information Specialist. The service is available from 9:00 a.m. to 11:00 p.m. Eastern time, Monday through Friday. Information Specialists can help Internet users find information on NCI Web sites and answer questions about cancer. WRITE TO US For more information from the NCI, please write to this address:
SEARCH THE NCI WEB SITE The NCI Web site provides online access to information on cancer, clinical trials, and other Web sites and organizations that offer support and resources for cancer patients and their families. For a quick search, use the search box in the upper right corner of each Web page. The results for a wide range of search terms will include a list of "Best Bets," editorially chosen Web pages that are most closely related to the search term entered. There are also many other places to get materials and information about cancer treatment and services. Hospitals in your area may have information about local and regional agencies that have information on finances, getting to and from treatment, receiving care at home, and dealing with problems related to cancer treatment. FIND PUBLICATIONS The NCI has booklets and other materials for patients, health professionals, and the public. These publications discuss types of cancer, methods of cancer treatment, coping with cancer, and clinical trials. Some publications provide information on tests for cancer, cancer causes and prevention, cancer statistics, and NCI research activities. NCI materials on these and other topics may be ordered online or printed directly from the NCI Publications Locator. These materials can also be ordered by telephone from the Cancer Information Service toll-free at 1-800-4-CANCER (1-800-422-6237). Changes to This Summary (07 / 02 / 2009)The PDQ cancer information summaries are reviewed regularly and updated as new information becomes available. This section describes the latest changes made to this summary as of the date above. GENERAL INFORMATION ABOUT GASTRIC CANCER Updated statistics with estimated new cases and deaths for 2009 (cited American Cancer Society as reference 1). More InformationABOUT PDQ
ADDITIONAL PDQ SUMMARIES
IMPORTANT: This information is intended mainly for use by doctors and other health care professionals. If you have questions about this topic, you can ask your doctor, or call the Cancer Information Service at 1-800-4-CANCER (1-800-422-6237). Date Last Modified: 2009-07-02
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