Current Clinical Trials

Note: 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:

1. One of the following surgical procedures:
   • Distal subtotal gastrectomy (if the lesion is not in the fundus or at the cardioesophageal junction).
   
   
   
   • Proximal subtotal gastrectomy or total gastrectomy (if the lesion involves the cardia).
   
   
   
   • Total gastrectomy (if the tumor involves the stomach diffusely or arises in the body of the stomach and extends to within 6 cm of the cardia).
   
   
   

   Regional lymphadenectomy is recommended with all of the above procedures. Splenectomy is not routinely performed.[1]




2. Postoperative chemoradiation therapy.[2]



3. Perioperative chemotherapy.[3]

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:

1. Postoperative chemoradiation therapy with ECF as evidenced in the CALGB-80101 trial.[7]
2. Neoadjuvant chemoradiation therapy as evidenced in the SWOG-S0425 and RTOG-9904 trials.[8]

All newly diagnosed patients with stage II gastric cancer should be considered candidates for 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

1. Brennan MF, Karpeh MS Jr: Surgery for gastric cancer: the American view. Semin Oncol 23 (3): 352-9, 1996.  [PUBMED Abstract]
   
   
2. Macdonald JS, Smalley SR, Benedetti J, et al.: Chemoradiotherapy after surgery compared with surgery alone for adenocarcinoma of the stomach or gastroesophageal junction. N Engl J Med 345 (10): 725-30, 2001.  [PUBMED Abstract]
   
   
3. Cunningham D, Allum WH, Stenning SP, et al.: Perioperative chemotherapy versus surgery alone for resectable gastroesophageal cancer. N Engl J Med 355 (1): 11-20, 2006.  [PUBMED Abstract]
   
   
4. Kitamura K, Yamaguchi T, Sawai K, et al.: Chronologic changes in the clinicopathologic findings and survival of gastric cancer patients. J Clin Oncol 15 (12): 3471-80, 1997.  [PUBMED Abstract]
   
   
5. Bonenkamp JJ, Songun I, Hermans J, et al.: Randomised comparison of morbidity after D1 and D2 dissection for gastric cancer in 996 Dutch patients. Lancet 345 (8952): 745-8, 1995.  [PUBMED Abstract]
   
   
6. Cuschieri A, Fayers P, Fielding J, et al.: Postoperative morbidity and mortality after D1 and D2 resections for gastric cancer: preliminary results of the MRC randomised controlled surgical trial.The Surgical Cooperative Group. Lancet 347 (9007): 995-9, 1996.  [PUBMED Abstract]
   
   
7. Fuchs C, Tepper JE, Niedwiecki D, et al.: Postoperative adjuvant chemoradiation for gastric or gastroesophageal adenocarcinoma using epirubicin, cisplatin, and infusional (CI) 5-FU (ECF) before and after CI 5-FU and radiotherapy (RT): interim toxicity results from Intergroup trial CALGB 80101. [Abstract] American Society of Clinical Oncology 2006 Gastrointestinal Cancers Symposium, 26-28 January 2006, San Francisco, California. A-61, 2006. 
   
   
8. Ajani JA, Winter K, Okawara GS, et al.: Phase II trial of preoperative chemoradiation in patients with localized gastric adenocarcinoma (RTOG 9904): quality of combined modality therapy and pathologic response. J Clin Oncol 24 (24): 3953-8, 2006.  [PUBMED Abstract]
   
   

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