Table 2.

Molecular analysis of patients with KRAS mutations and abnormal ALK FISH

Patient no.EGFR mutationKRAS mutationALK FISH patternALK IHC
1WTGly12CysIsolated green 5′ probeNegative
2WTGly12SerIsolated green 5′ probeNegative
3WTGly13CysIsolated green 5′ probeN/A
4WTGly12ValIsolated red 3′ probeaNegative
  • aALK FISH—isolated red 3′ probe considered “unusually small.”