| E7389-LF | Liposomal eribulin mesylate |
| E7(86-93) | HPV 16 E7:86-93 peptide vaccine |
| EA | Ethacrynic acid |
| EBM | Evidence-based medicine |
| EBS-DM | Epidermolysis bullosa simplex, Dowling-Meara |
| EBV | Epstein-Barr virus |
| EBV-CTLs | Tabelecleucel |
| EBViNT | EBV LMP-2A-specific autologous CD8+ T cells |
| ECD | Erdheim-Chester disease |
| ECG | Electrocardiogram |
| ECLM | Cultured Lentinula edodes mycelia extract |
| ECM | Extracellular matrix |
| ECT | Electroconvulsive therapy; Electroshock therapy |
| ECyd | 3'-C-ethynylcytidine |
| EDMN | CGP-6809 |
| EDP | Epidiferphane |
| EDTA | Edetic acid; Etheylenediaminetetraacetic acid |
| EE | Ethinyl estradiol |
| EEG | Electroencephalogram |
| EFS | Event-free survival |
| EFTs | Ewing sarcoma family of tumors |
| EFV/FTC/TDF | Efavirenz/emtricitabine/tenofovir disoproxil fumarate |
| EGb761 | Ginkgo biloba |
| EGCG | epigallocatechin-3-gallate; Epigallocatechin gallate |
| EGD | Esophagogastroduodenoscopy; Upper endoscopy; Upper gastrointestinal endoscopy; Upper GI endoscopy |
| EGF | Epidermal growth factor |
| EGFR | Epidermal growth factor receptor |
| EHR | Electronic health record; Electronic medical record |
| EIAED | Enzyme-inducing antiepileptic drug |
| EKB-569 | Pelitinib |
| EKG | Electrocardiogram |
| ELF-EMF | Extremely low frequency electromagnetic field |
| ELISA | Enzyme-linked immunosorbent assay |
| EM-1421 | tetra-O-methyl NDGA; tetra-O-methyl nordihydroguaiaretic acid |
| EMC | Extraskeletal myxoid chondrosarcoma |
| EMD 121974 | Cilengitide |
| EMF | Electromagnetic field |
| eMIP | Recombinant MIP1-alpha variant ECI301 |
| EMR | Electromagnetic radiation |
| EMW | Electrokinetically modified water |
| EOB | Explanation of benefits |
| EPA | Eicosapentaenoic acid |
| EPA-FFA | Icosapent |
| EPEG | Etoposide |
| epi | Therapeutic epinephrine |
| EPO | Epoetin alfa |
| EPO906 | Epothilone B |
| EPOB | Epoetin beta |
| EPOCH | EPOCH regimen |
| EPOCH-O | EPOCH-O regimen |
| EPOCH-R | EPOCH-R regimen; R-EPOCH regimen |
| EPT | Electroporation therapy; Teniposide |
| ER | Estrogen receptor |
| ErbB1 | Epidermal growth factor receptor |
| ERCP | Endoscopic retrograde cholangiopancreatography |
| ERMS | Embryonal rhabdomyosarcoma |
| ERT | Estrogen replacement therapy |
| ERUS | Endorectal ultrasound; Transrectal ultrasound |
| ESA | Erythropoiesis-stimulating agent |
| ESDL | Therapeutic estradiol |
| ESR | Erythrocyte sedimentation rate |
| ESS | Endometrial stromal sarcoma |
| EST | Conjugated estrogens |
| ET 743 | Trabectedin |
| ETN | Etanercept |
| ETOP | Etoposide phosphate |
| ETS | Environmental tobacco smoke; Secondhand smoke |
| ETV | Entecavir |
| EUS | Endoscopic ultrasound; Endosonography |
| EUS-FNA | Endoscopic ultrasound-guided fine needle aspiration |
| Ex(9-39)NH2 | Avexitide |
| EZN-2285 | Asparlas; Calaspargase pegol; SC-PEG E |