HIF1A and gastric cancer: The median frequency for the subset of proteins expressed in gastric cancer was 54.1% (range, 38.9–80.2%) for HIF-1α, 61.2% (range, 40.7–3.9%) for CD44v6, 55.6% (range, 34.5–76.3%) for Survivin, and 43.3% (range, 20.0–70.2%) for PTEN.