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Clinical Trial for Laparoscopic D2 Gastrectomy (NCC181)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01163812
Recruitment Status : Completed
First Posted : July 16, 2010
Last Update Posted : July 19, 2010
Information provided by:
National Cancer Center, Korea

Brief Summary:

Objectives of this study was to determine whether laparoscopy-assisted distal gastrectomy (LADG) with complete D2 lymph node dissection for gastric cancer is a safe and effective surgical option.

Methods: total 64 patients, who are diagnosed preoperatively as having T1-2, N0-1 or M0 gastric cancer, will be prospectively enrolled to undergo LADG with D2 lymph node dissection; two surgeons with experience of over 50 cases of laparoscopic gastrectomy performed the procedures. The compliance rate, defined as cases with no more than one missing lymph node station according to the Japanese Research Society of Gastric Cancer (JRSGC) lymph node grouping, for the open gastrectomy with D2 lymph node dissection was 66.0% in a pilot study and was used for calculations of sample size. Compliance rate and other surgical outcomes, including the number of retrieved lymph nodes from each lymph node station, morbidities, mortalities and conversion rate will be analyzed.

Condition or disease Intervention/treatment Phase
Gastric Cancer Procedure: Laparoscopic D2 distal gastrectomy Phase 2

Detailed Description:

Gastric cancer is the most common cancer in Korea; the overall age-standardized incidence rates of gastric cancer in Korea have been reported to be 69.6 per 100,000 among males and 26.8 per 100,000 among females in 2000.

Treatment modalities for resectable gastric cancer include endoscopic mucosal resection (EMR), laparoscopy-assisted gastrectomy (LAG) and conventional open gastrectomy. Laparoscopic cancer surgery has been reported to be an acceptable alternative to open surgery in patients with colorectal cancer. However, in gastric cancer, laparoscopic surgery has not yet been validated and, thus, is performed only in a limited number of patients with early gastric cancer; this is due to the technical difficulty in systematic lymph node dissection. For the treatment of advanced gastric cancer (AGC), in countries including Korea and Japan, gastrectomy with D2 lymph node dissection has been the standard operation. With the recent progress in diagnostic techniques, accumulation of experience with laparoscopy-assisted distal gastrectomy (LADG) for early gastric cancer and the increasing interest in a better quality of life, there has been an effort to apply minimally invasive techniques to the treatment of AGC. However, there has been no clinical trial to test the oncological feasibility of LADG with D2 lymph node dissection. There is only one phase-II study that evaluated whether the morbidity associated with LADG was higher than that of open gastrectomy.

Before the indications for LADG can be extended to include patients with advanced cancer, the status of surgical expertise for complete D2 lymph node dissection requires investigation using a prospective clinical study design. If this approach is shown to be feasible, a randomized prospective clinical trial, to compare survival and other surgical outcomes, would be the next step in validating this technique for this group of patients.

This study is to be performed according to the Helsinki Declaration. The study was approved by the Ethics Subcommittee at the National Cancer Center for Research Involving Human Subjects (no. NCCCTS-2005181). All patients will be provided written informed consent before entering the study.

Sample size The sample size was based on the alpha error at 0.05 and 90% of power and the accepted margin of the difference in the compliance rate at 10% based on a non-inferiority test. The target was chosen from the primary end point of the study. For the patients who underwent LADG with D2 lymph node dissection, the compliance rate-defined as cases in which there was no more than one missing lymph node station according to the guidelines of "The Japanese Research Society for Gastric Cancer" (JRSGC) lymph node grouping,11,12-was set up to 55%; for the patients with open distal gastrectomy with D2 lymph node dissection, it was 66%, based on a pilot study. We performed a pilot study to determine the compliance rate in 100 cases of open distal gastrectomy with D2 lymph node dissection before enrollment started. When the data was used for the formula, the total sample size required was determined to be 60 patients. When we added 10% for expected follow-up loss, the total sample size was calculated to be 66 patients.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 64 participants
Allocation: N/A
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: A Phase-II Clinical Trial of Laparoscopy-Assisted Distal Gastrectomy With D2 Lymph Node Dissection for Gastric Cancer
Study Start Date : April 2006
Actual Primary Completion Date : October 2006
Actual Study Completion Date : October 2006

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Stomach Cancer

Arm Intervention/treatment
Experimental: Laparoscopic D2 gastrectomy Procedure: Laparoscopic D2 distal gastrectomy
Under general endotracheal anesthesia, Five or six ports are used. Lymph node dissection and ligation of vessels are carried out in the laparoscopic field. A partial omentectomy encompassing perigastric nodes is performed laparoscopically. D2 lymphadenectomy is carried out according to the guidelines of the "The Japanese Research Society for Gastric Cancer" for the corresponding location of the primary tumor. A 5- to 6-cm small incision is made transversely in RUQ of the abdomen. Through the incisional window, the stomach is removed from the abdominal cavity and resected. A Billroth-I gastroduodenostomy using an EEA stapler and GIA or a Billroth-II gastrojejunostomy with a hand-sewing technique is performed. The abdomen is then closed after hemostasis is achieved.
Other Name: LADG

Primary Outcome Measures :
  1. Compliance of lymph node dissection [ Time Frame: immediate postoperative 1 week ]
    noncompliance : if two or more nodal station is vacant, it is a noncompliant D2 gastrectomy.

Secondary Outcome Measures :
  1. Proportion of patients with retrieved lymph nodes less than 26 [ Time Frame: Postoperative 1 week ]
  2. operative complications [ Time Frame: Postoperative 1 month ]
    intra, and postopertive complications related to operation.

  3. operative time [ Time Frame: postoperative 1 day ]
  4. estimated blood loss [ Time Frame: postoperative 1 day ]
    blood loss during operation.

  5. amount of administered analgesics [ Time Frame: Postoperative 1 week ]
  6. time to diet [ Time Frame: postoperative 1 week ]
  7. time to return of bowel movement [ Time Frame: postoperative 1 week ]
  8. hospital stay [ Time Frame: postoperative 1 week ]
  9. distance to resection margin and number of harvested lymph nodes [ Time Frame: postoperative 1 week ]

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 75 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Histologically confirmed adenocarcinoma of the stomach,
  • Age between 18 and 75 years, performance status of ECOG 0-1
  • Signed informed consent
  • Location of the primary tumor in the antrum, angle and lower body
  • No evidence of distant metastasis or invasion to adjacent organs or serosal infiltration,
  • Enlarged lymph node size 2 cm or less on CT and no conglomerate nodes or regional
  • Lymph node metastasis confined to perigastric nodes (N1) as shown on by CT and EUS

Exclusion Criteria:

  • Metastatic disease, previous history of malignancy in any organ, any co-morbidity
  • Obviating major surgery, contraindication to laparoscopy such as severe cardiac disease
  • Abdominal wall hernias, diaphragmatic hernias, uncorrected coagulopathies, portal hypertension, pregnancy, previous upper abdominal surgery, complicated cases requiring emergency surgery, and an accompanying surgical condition requiring surgery at the same time

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT01163812

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Korea, Republic of
National Cancer Center
Goyang, Gyeonggido, Korea, Republic of, 411-769
Sponsors and Collaborators
National Cancer Center, Korea
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Principal Investigator: Young-Woo Kim, MD, PhD NCC Korea
Publications of Results:
Other Publications:
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Responsible Party: Young-Woo Kim/ head, National Cancer Center Identifier: NCT01163812    
Other Study ID Numbers: NCCCTS-2005181
First Posted: July 16, 2010    Key Record Dates
Last Update Posted: July 19, 2010
Last Verified: July 2010
Keywords provided by National Cancer Center, Korea:
D2 lymph node dissection
Additional relevant MeSH terms:
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Stomach Neoplasms
Gastrointestinal Neoplasms
Digestive System Neoplasms
Neoplasms by Site
Digestive System Diseases
Gastrointestinal Diseases
Stomach Diseases