| AKT | Refers to three serine/threonine kinases: Akt1, Akt2, and Akt3. |
| AST | Abbreviation of aspartate aminotransferase. |
| BRAF (protein) | RAF isoform. Shortened name for BRAF proto-oncogene serine/threonine kinase. |
| BRAF (proto-oncogene) | The gene that encodes for BRAF. |
| BRAFi | Abbreviation of BRAF inhibitors. |
| CDK 4/6 | Refers to two cyclin-dependent kinases. An abbreviation of cyclin-dependent kinases 4 and 6. |
| c-Jun | Transcription factor protein. Shortened name for transcription factor Jun. |
| c-Raf | RAF isoform. Shortened name for RAF proto-oncogene serine/threonine-protein kinase. RAF isoform. |
| CTLA-4 | Abbreviation of cytotoxic T-lymphocyte-associated protein 4. |
| dMMR | Referring to a tumor cell’s inability to properly repair DNA damage. Abbreviation of deficient mismatch repair. |
| DOR | Duration of Response. |
| ECOG PS | Eastern Cooperative Oncology Group Performance Status. |
| ERK 1/2 | Refers to two members of the MAPK family. An abbreviation of extracellular signal-regulated protein kinases 1 and 2. |
| Fd-7 | Receptor protein. Abbreviation of Frizzled-7. |
| FTI | Abbreviation of farnesyltransferase inhibitors. |
| GAP | Abbreviation of GTPase-activating protein. |
| GGT | Abbreviation of gamma-glutamyl transferase. |
| GGTase-1 | Abbreviation of geranylgeranyltranferase-I. |
| GTPase | An enzyme that binds to guanosine triphosphate and hydrolyzes it, turning the molecule into guanosine diphosphate. |
| HDACs | A family of enzymes. An abbreviation of histone deacetylases. |
| HGF | Growth factor protein. Abbreviation of hepatocyte growth factor. |
| HNSCC | Abbreviation of Head and Neck Squamous Cell Carcinoma. |
| HR | Abbreviation of hazard ratio. |
| HRAS | RAS isoform. Shortened form of Harvey Rat sarcoma viral oncogene homolog. |
| ICIs | Immune checkpoint inhibitors. |
| IHC | Abbreviation of immunohistochemistry. |
| JAK2 | Refers to both the human gene and the non-receptor tyrosine kinase encoded by the JAK2 gene. With regard to the protein, JAK2 is an abbreviation of Janus kinase 2. |
| JNKs | Mitogen-activated protein kinases. Abbreviation of c-Jun terminal kinases. |
| KRAS | RAS isoform. Shortened form of Kirsten rat sarcoma virus oncogene homolog. |
| LDH | Lactate dehydrogenase. |
| MAPK | A type of serine/threonine-specific protein kinase which includes ERKs, JNKs, and p38s. Abbreviation of mitogen-activated protein kinase. |
| MEK 1/2 | Refers to two dual-specificity kinase enzymes. An abbreviation of dual-specificity mitogen-activated protein kinase kinase 1 and 2. |
| MEKi | Abbreviation of MEK inhibitors. |
| MSI-H | Referring to a tumor cell’s inability to properly repair DNA replication errors. Abbreviation of microsatellite instability-high. |
| mTOR | A regulatory serine-threonine protein kinase. Abbreviation of mechanistic target of rapamycin. |
| NGS | Next-generation sequencing |
| NRAS | RAS isoform. Shortened form of neuroblastoma Ras viral oncogene homolog. |
| OS | Overall survival. |
| PD-1 | Programmed cell death protein 1. |
| PD-L1 | Programmed cell death ligand 1. |
| PI3Ks | A family of kinase enzymes. Abbreviation of Phosphoinositide 3-kinases. |
| PFS | Progression-free survival. |
| PTEN | A tumor suppressor gene. Abbreviation of phosphatidylinositol-3,4,5-trisphosphate 3-phosphatase. |
| RAF | A family of serine/threonine-specific protein kinases. Abbreviation of rapidly accelerated fibrosarcoma. |
| RTKs | Receptor tyrosine kinases. |
| RYKs | Atypical member of the RTK family. Abbreviation of receptor-like tyrosine kinases. |
| TAZ | A transcriptional regulatory protein. Abbreviation of transcriptional coactivator with a PDZ-binding motif. |
| TKIs | Tyrosine kinase inhibitors. |
| UV | Abbreviation for ultraviolet. |
| V600E | BRAF gene missense mutation that replaces valine (V) with glutamic acid (E) at amino acid 600. |
| V600K | BRAF gene missense mutation that replaces valine (V) with lysine (K) at amino acid 600. |
| Wnt5a | Signaling glycoprotein. Abbreviation of wingless type MMTV integration site family member 5A. |
| YAP | A transcriptional regulatory protein. Abbreviation of yes-associated protein 1. |