The study has received Ethical Committee approval in each participating institute. The KLASS 07 trial is a multi-center randomized controlled trial (RCT) that is evaluating the superiority of TLDG over LADG in 442 patients with early gastric cancer who have been recruited in 26 institutes in Korea. In addition, another multi-center RCT using the same protocol as KLASS 07 is ongoing in China (CKLASS 01). The protocol of KLASS 07 (CKLASS 01) was registered in http://register.clinicaltrials.gov as NCT03393182.
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