Data Last Updated: June 9, 2025

NAACCR Item #3941: NRAS Mutational Analysis

Item # Length Source of Standard Section Name Year Implemented Version Implemented XML NAACCR ID Parent XML Element
3941 1 NAACCR Stage/Prognostic Factors 2021 21 nrasMutationalAnalysis Tumor
Required Status:

NPCR Collect: No recommendation
CoC Collect: Required, site specific
SEER Collect: Required
CCCR Collect: No recommendation

Description
NRAS is a signaling intermediate in the growth receptor pathway. Certain NRAS mutations predict poor response to anti-EGFR therapy in patients with metastatic colorectal cancer.
Rationale
NRAS mutational analysis is recommended in clinical guidelines for patients with metastatic colon cancer who are being considered for anti-EGFR therapy. It is a new data item for cases diagnosed 01/01/2021+.
Allowable Values
0-2, 4, 7-9
Codes
Code Description
0 Normal NRAS negative; NRAS wild type Negative for (somatic) mutations, no alterations, no (somatic) mutations identified, not present, not detected
1 Abnormal (mutated)/detected in codon(s) 12, 13, and/or 61
2 Abnormal (mutated)/detected, codon(s) specified but not in codon(s) 12, 13, or 61
4 Abnormal (mutated), NOS, codon(s) not specified
7 Test ordered, results not in chart
8 Not applicable: Information not collected for this case If this information is required by your standard setter, use of code 8 may result in an edit error.
9 Not documented in medical record NRAS not assessed or unknown if assessed
Code Notes
Each Site-Specific Data Item (SSDI) applies only to selected primary sites, histologies, and years of diagnosis. Depending on applicability and standard-setter requirements, SSDIs may be left blank.