\[PICOT\] Population: Patients with recurrent or metastatic solid cancer (gastric, colorectal, pancreas, biliary tract and lung)
Intervention: Multimodal treatment
Comparison: Conventional palliative care
Outcome: Change of total lean body mass, Change of handgrip strength Time: 12 weeks of study period for each subject during the first- or second-line palliative chemotherapy
