| FTIR | Fourier Transform Infrared |
| ES | Ewing sarcoma |
| SVM | Support Vector Machine |
| neoCTX | neoadjuvant chemotherapy |
| preCTX | pre-neoadjuvant chemotherapy |
| postCTX | post-neoadjuvant chemotherapy |
| VIDE | vincristine, ifosfamide, doxorubicin, etoposide |
| FFPE | formalin-fixed paraffin-embedded |
| ATR | attenuated total reflection |
| PCA | principal component analysis |
| poly | polynomial |
| rbf | radial basis function |
| RF | Random Forest |
| LDA | Linear Discriminant Analysis |
| KNN | k-nearest neighbours |
| GDM | Gradient Boosted Classifier |
| CI | confidence interval |
| HR | hazard ratio |