Mario Balsa, Medical Oncology Resident at Catalan Institute of Oncology, shared a post on X:
“Codon-specific KRAS mutations in localized and advanced PDAC (n=1,032) JCO Precision Oncology.
- 92% KRAS-mutant: G12D (41%), G12V (32%), G12R (16%).
- Localized disease: G12V → longer OS vs G12D (P=.03).
- Metastatic disease: G12V → shorter OS vs G12D & G12R (P=.04).
- No major differences in TP53/CDKN2A/SMAD4 co-alterations.
It’s not just KRAS…it’s which KRAS!! The codon calls the code.”

Title: Prognostic Implications of Codon-Specific KRAS Mutations in Localized and Advanced Stages of Pancreatic Cancer
Authors: Sara Raji, Hamed Zaribafzadeh, Tyler Jones, Elishama Kanu, Kunling Tong, Ashley Fletcher, T. Clark Howell, Shannon J. McCall, Jeffrey R. Marks, Bruce Rogers, Donna Niedzwiecki, Peter J. Allen, Daniel P. Nussbaum, Zahra Kabiri
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