| Semantic Type ID | Semantic Type Name | Count | Percentage Distribution |
|---|---|---|---|
| T121 | Pharmacologic Substance | 9773 | 32.1 |
| T109 | Organic Chemical | 5819 | 19.1 |
| T061 | Therapeutic or Preventive Procedure | 4232 | 13.9 |
| T116 | Amino Acid, Peptide, or Protein | 2592 | 8.5 |
| T191 | Neoplastic Process | 2331 | 7.6 |
| T129 | Immunologic Factor | 2072 | 6.8 |
| T114 | Nucleic Acid, Nucleoside, or Nucleotide | 468 | 1.5 |
| T025 | Cell | 391 | 1.3 |
| T130 | Indicator, Reagent, or Diagnostic Aid | 384 | 1.3 |
| T195 | Antibiotic | 335 | 1.1 |
| Term Type | Expanded Form | Count |
|---|---|---|
| SY | Designated synonym | 17669 |
| PT | Designated preferred name | 12462 |
| CCN | Chemical code name | 4204 |
| ACR | Acronym | 3606 |
| AB | Abbreviation in any source vocabulary | 2345 |
| BN | Fully-specified drug brand name that can not be prescribed | 1690 |
| CHN | Chemical structure name | 1651 |
| FBD | Foreign brand name | 1220 |
| LV | Lexical variant | 609 |
| PSC | Protocol selection criteria | 571 |
| ET | Entry term | 264 |
| IS | Obsolete Synonym | 230 |
| OP | Obsolete preferred name | 195 |
| HT | Hierarchical term | 179 |
| CU | Common usage | 7 |
| Attribute Type | Expanded Form | Count |
|---|---|---|
| ORIG_STY | Original semantic type | 13185 |
| NCI_ID | NCI thesaurus concept id | 10674 |
| DATE_LAST_MODIFIED | Date last modified | 9465 |
| DATE_FIRST_PUBLISHED | Date first published | 7458 |
| PID | Legacy PDQ ID | 5943 |
| LT | Indicates if a chemicals or medical device is a tradename (present in older versions of the Metathesaurus and was discontinued, then brought back starting in 2002AD) | 2904 |
| MENU_PARENT | Link information to Term Menu parent. This may not always be the same as the TermParent. Element will not exist for top level menus, e.g. cancer. | 1477 |
| MENU_TYPE | Values are Clinical Trials--Cancer Type, Clinical Trials--Drug, or Cancer Information. | 1371 |
| CAS_REGISTRY | CAS Registry | 1159 |
| PXC | PDQ Protocol Exclusion Criteria - terms with type "exclusion criteria," which may be indexed on protocol records to identify conditions that exclude a patient from eligibility. | 620 |
| NSC_CODE | NSC Code | 607 |
| IND_CODE | IND Code | 337 |
| Relation Name/Additional Label | Expanded Form | Count |
|---|---|---|
| RO/component_of | has relationship other than synonymous, narrower, or broader/Component of | 10814 |
| RO/has_component | has relationship other than synonymous, narrower, or broader/Has component | 10814 |
| SY/ | source asserted synonymy./Empty relationship attribute | 4690 |
| PAR/inverse_isa | has parent relationship in a Metathesaurus source vocabulary /Inverse is a | 4298 |
| CHD/isa | has child relationship in a Metathesaurus source vocabulary /Is a | 4298 |
| RN/lab_number_of | has a narrower relationship/Lab number | 4204 |
| RB/has_lab_number | has a broader relationship/Has lab number | 4204 |
| SY/has_expanded_form | source asserted synonymy./Has expanded form | 3606 |
| SY/expanded_form_of | source asserted synonymy./Expanded form of | 3606 |
| RN/tradename_of | has a narrower relationship/Tradename of | 2910 |
| RB/has_tradename | has a broader relationship/Has tradename | 2910 |
| RO/associated_genetic_condition | has relationship other than synonymous, narrower, or broader/Associated genetic condition | 243 |
| RO/associated_disease | has relationship other than synonymous, narrower, or broader/Associated disease | 243 |
| Count |
|---|
| 6374 |
| Source | # Concepts Sharing Atom/# Total Concepts | Percentage Distribution |
|---|---|---|
| NCI | 16808/18944 | 88.7 |
| MSH | 6506/18944 | 34.3 |
| NCI_CTRP | 5191/18944 | 27.4 |
| CHV | 2931/18944 | 15.5 |
| SNOMEDCT_US | 2606/18944 | 13.8 |
| SCTSPA | 2554/18944 | 13.5 |
| RXNORM | 2518/18944 | 13.3 |
| NCI_FDA | 2505/18944 | 13.2 |
| MMSL | 2365/18944 | 12.5 |
| NCI_NCI-GLOSS | 2172/18944 | 11.5 |
| MSHGER | 2056/18944 | 10.9 |
| MSHCZE | 2057/18944 | 10.9 |
| MSHFRE | 2031/18944 | 10.7 |
| DRUGBANK | 2032/18944 | 10.7 |
| MSHPOR | 1914/18944 | 10.1 |
| MSHSWE | 1888/18944 | 10.0 |
| MEDCIN | 1900/18944 | 10.0 |
| MSHSPA | 1848/18944 | 9.8 |
| RCD | 1787/18944 | 9.4 |
| MSHITA | 1647/18944 | 8.7 |
| NDDF | 1356/18944 | 7.2 |
| SNMI | 1362/18944 | 7.2 |
| MSHPOL | 1363/18944 | 7.2 |
| MSHRUS | 1366/18944 | 7.2 |
| VANDF | 1190/18944 | 6.3 |
| MTHSPL | 1173/18944 | 6.2 |
| MDR | 1178/18944 | 6.2 |
| MDRBPO | 1178/18944 | 6.2 |
| MDRCZE | 1178/18944 | 6.2 |
| MDRDUT | 1178/18944 | 6.2 |
| MDRFRE | 1178/18944 | 6.2 |
| MDRGER | 1178/18944 | 6.2 |
| MDRHUN | 1178/18944 | 6.2 |
| MDRITA | 1178/18944 | 6.2 |
| MDRJPN | 1178/18944 | 6.2 |
| MDRKOR | 1178/18944 | 6.2 |
| MDRPOR | 1178/18944 | 6.2 |
| MDRRUS | 1178/18944 | 6.2 |
| MDRSPA | 1178/18944 | 6.2 |
| MSHFIN | 1128/18944 | 6.0 |
| GS | 1141/18944 | 6.0 |
| MSHJPN | 1109/18944 | 5.9 |
| MSHNOR | 1026/18944 | 5.4 |
| NCI_DTP | 1001/18944 | 5.3 |
| CSP | 982/18944 | 5.2 |
| ATC | 872/18944 | 4.6 |
| USP | 807/18944 | 4.3 |
| LNC | 796/18944 | 4.2 |
| SNM | 766/18944 | 4.0 |
| MSHDUT | 616/18944 | 3.3 |
| USPMG | 604/18944 | 3.2 |
| LCH_NW | 611/18944 | 3.2 |
| MSHSCR | 587/18944 | 3.1 |
| AOD | 486/18944 | 2.6 |
| NCI_DCP | 482/18944 | 2.5 |
| NCI_caDSR | 431/18944 | 2.3 |
| CCPSS | 404/18944 | 2.1 |
| NCI_GDC | 404/18944 | 2.1 |
| OMIM | 361/18944 | 1.9 |
| LCH | 347/18944 | 1.8 |
| ICD10AM | 348/18944 | 1.8 |
| NCI_NICHD | 321/18944 | 1.7 |
| ICPC2ICD10ENG | 303/18944 | 1.6 |
| ICD10CM | 285/18944 | 1.5 |
| NCI_CELLOSAURUS | 293/18944 | 1.5 |
| HPO | 256/18944 | 1.4 |
| MEDLINEPLUS | 243/18944 | 1.3 |
| ICPC2ICD10DUT | 245/18944 | 1.3 |
| ICD9CM | 228/18944 | 1.2 |
| DXP | 229/18944 | 1.2 |
| ICPC2P | 235/18944 | 1.2 |
| MTHICD9 | 200/18944 | 1.1 |
| RCDAE | 214/18944 | 1.1 |
| PSY | 215/18944 | 1.1 |