FLT3 and acute promyelocytic leukemia: Given the prognostic and predictive significance of FLT3‐ITD, which represents an actionable vulnerability in APL that bears a negative prognostic value, we showed that the SERS spectra of DNA corresponding to cases of APL with FLT3‐ITD mutation exhibit a distinct spectral pattern, although the limited number of samples prevented a proper quantitative analysis of the classification accuracy.