RAINBOW: A GLOBAL, PHASE 3, DOUBLE-BLIND STUDY OF RAMUCIRUMAB (RAM) PLUS PACLITAXEL (PTX) VERSUS PLACEBO (PL) plus PTX IN THE TREATMENT OF ADVANCED GASTRIC AND GASTROESOPHAGEAL JUNCTION (GEJ) ADENOCARCINOMA FOLLOWING DISEASE PROGRESSION ON FIRST-LINE PLATINUM- AND FLUOROPYRIMIDINE-CONTAINING COMBINATION THERAPY: A SUBGROUP ANALYSIS OF WESTERN POPULATION