Another study provided the genetic analysis in 40 suspected individuals for MEN1; 32/40 subjects had a syndrome confirmation, and they displayed the following spectrum: 100% had primary hyperparathyroidism; 68.7% were associated with gastro-entero-pancreatic NETs; and 66% were confirmed with a hypophyseal NET [114]. This evidence concerns the gene MEN1 and pancreatic neuroendocrine tumor.