Surgery Which of the following is not true about Gastrointestinal Stromal Tumor (GIST)? A Originates from interstitial cells of Cajal B Most common mesenchymal tumour of gastrointestinal tract C Prognosis depends on size D ALK gene mutation is seen in most of the cases 💡 Explanation Which of the following is not true about Gastrointestinal Stromal Tumor (GIST)? ✓ Correct Answer: D. ALK gene mutation is seen in most of the cases