| Semantic Type ID | Semantic Type Name | Count | Percentage Distribution |
|---|---|---|---|
| T121 | Pharmacologic Substance | 9648 | 32.3 |
| T109 | Organic Chemical | 5647 | 18.9 |
| T061 | Therapeutic or Preventive Procedure | 4234 | 14.2 |
| T116 | Amino Acid, Peptide, or Protein | 2443 | 8.2 |
| T191 | Neoplastic Process | 2330 | 7.8 |
| T129 | Immunologic Factor | 1950 | 6.5 |
| T114 | Nucleic Acid, Nucleoside, or Nucleotide | 453 | 1.5 |
| T025 | Cell | 386 | 1.3 |
| T130 | Indicator, Reagent, or Diagnostic Aid | 371 | 1.2 |
| 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) | 2906 |
| 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 |
| RB/has_tradename | has a broader relationship/Has tradename | 2910 |
| RN/tradename_of | has a narrower relationship/Tradename of | 2910 |
| RO/associated_disease | has relationship other than synonymous, narrower, or broader/Associated disease | 243 |
| RO/associated_genetic_condition | has relationship other than synonymous, narrower, or broader/Associated genetic condition | 243 |
| Count |
|---|
| 6374 |
| Source | # Concepts Sharing Atom/# Total Concepts | Percentage Distribution |
|---|---|---|
| NCI | 16731/18864 | 88.7 |
| MSH | 6064/18864 | 32.1 |
| NCI_CTRP | 5328/18864 | 28.2 |
| CHV | 2921/18864 | 15.5 |
| SNOMEDCT_US | 2512/18864 | 13.3 |
| RXNORM | 2471/18864 | 13.1 |
| SCTSPA | 2456/18864 | 13.0 |
| MMSL | 2306/18864 | 12.2 |
| NCI_FDA | 2167/18864 | 11.5 |
| NCI_NCI-GLOSS | 2173/18864 | 11.5 |
| MSHGER | 2041/18864 | 10.8 |
| MSHFRE | 2005/18864 | 10.6 |
| MSHCZE | 1879/18864 | 10.0 |
| MSHPOR | 1859/18864 | 9.9 |
| MEDCIN | 1810/18864 | 9.6 |
| MSHSPA | 1813/18864 | 9.6 |
| RCD | 1795/18864 | 9.5 |
| DRUGBANK | 1738/18864 | 9.2 |
| MSHITA | 1642/18864 | 8.7 |
| NDFRT | 1615/18864 | 8.6 |
| SNMI | 1360/18864 | 7.2 |
| MSHPOL | 1347/18864 | 7.1 |
| MSHRUS | 1348/18864 | 7.1 |
| NDDF | 1311/18864 | 6.9 |
| MSHSWE | 1248/18864 | 6.6 |
| MDR | 1154/18864 | 6.1 |
| MDRCZE | 1154/18864 | 6.1 |
| MDRDUT | 1154/18864 | 6.1 |
| MDRFRE | 1154/18864 | 6.1 |
| MDRGER | 1154/18864 | 6.1 |
| MDRHUN | 1154/18864 | 6.1 |
| MDRITA | 1154/18864 | 6.1 |
| MDRJPN | 1154/18864 | 6.1 |
| MDRPOR | 1154/18864 | 6.1 |
| MDRSPA | 1154/18864 | 6.1 |
| MSHFIN | 1125/18864 | 6.0 |
| VANDF | 1139/18864 | 6.0 |
| MSHJPN | 1106/18864 | 5.9 |
| MTHSPL | 1118/18864 | 5.9 |
| GS | 1086/18864 | 5.8 |
| MSHNOR | 1023/18864 | 5.4 |
| NCI_DTP | 993/18864 | 5.3 |
| CSP | 981/18864 | 5.2 |
| ATC | 823/18864 | 4.4 |
| USP | 787/18864 | 4.2 |
| LNC | 758/18864 | 4.0 |
| SNM | 763/18864 | 4.0 |
| MSHDUT | 620/18864 | 3.3 |
| USPMG | 626/18864 | 3.3 |
| LCH_NW | 610/18864 | 3.2 |
| MSHSCR | 585/18864 | 3.1 |
| NCI_DCP | 482/18864 | 2.6 |
| AOD | 485/18864 | 2.6 |
| CCPSS | 404/18864 | 2.1 |
| OMIM | 337/18864 | 1.8 |
| ICD10AM | 345/18864 | 1.8 |
| LCH | 348/18864 | 1.8 |
| NCI_NICHD | 321/18864 | 1.7 |
| ICPC2ICD10ENG | 303/18864 | 1.6 |
| ICD10CM | 286/18864 | 1.5 |
| HPO | 243/18864 | 1.3 |
| MEDLINEPLUS | 245/18864 | 1.3 |
| ICPC2ICD10DUT | 246/18864 | 1.3 |
| ICD9CM | 227/18864 | 1.2 |
| DXP | 230/18864 | 1.2 |
| ICPC2P | 235/18864 | 1.2 |
| MTHICD9 | 199/18864 | 1.1 |
| RCDAE | 213/18864 | 1.1 |
| PSY | 214/18864 | 1.1 |