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Medical Dictionary for Regulatory Activities Terminology (MedDRA)
Last uploaded:
January 16, 2025
Acronym | MEDDRA |
Visibility | Public |
Description | MedDRA is an international medical terminology with an emphasis on use for data entry, retrieval, analysis, and display. It applies to all phases of drug development, excluding animal toxicology, and to the health effects and malfunction of devices. An appendix includes concept descriptions which describe how a medical concept is interpreted, used, and classified within the MedDRA terminology. It is not intended as a medical definition. The concept descriptions are intended to aid the consistent and accurate use of MedDRA in coding, retrieval, and analysis. |
Status | Production |
Format | UMLS |
Contact | MedDRA MSSO, mssohelp@meddra.org |
Categories | Health |
Groups | Cancer Biomedical Informatics Grid, Unified Medical Language System |
License Information | The MedDRA ontology is maintained and distributed by the MedDRA MSSO. This ontology is freely accessible on this site for academic and other non-commercial uses. Users anticipating any commercial use of MedDRA must contact the MSSO to obtain a license. |
Version | Released | Uploaded |
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MDR27_0 (Parsed, Indexed, Metrics, Annotator, Error Diff) | 11/04/2024 | 01/16/2025 |
2024AA (Archived) | 05/06/2024 | 08/28/2024 |
2023AB (Archived) | 11/06/2023 | 01/31/2024 |
2023AA (Archived) | 04/01/2023 | 08/07/2023 |
2022AB (Archived) | 11/07/2022 | 01/06/2023 |
2022AA (Archived) | 05/02/2022 | 06/10/2022 |
2021AB (Archived) | 11/01/2021 | 11/18/2021 |
2021AA (Archived) | 04/03/2021 | 05/20/2021 |
2020AB (Archived) | 11/02/2020 | 01/06/2021 |
2020AA (Archived) | 05/05/2020 | 09/24/2020 |
2019AB (Archived) | 11/04/2019 | 11/18/2019 |
2019AA (Archived) | 05/06/2019 | 08/27/2019 |
2018AB (Archived) | 11/05/2018 | 04/29/2019 |
2018AA (Archived) | 05/07/2018 | 07/06/2018 |
2017AB (Archived) | 11/06/2017 | 07/06/2018 |
2017AA (Archived) | 05/08/2017 | 04/06/2018 |
2016AB (Archived) | 02/06/2017 | 02/06/2017 |
2016AA (Archived) | 09/06/2016 | 09/06/2016 |
2015AB (Archived) | 07/20/2016 | 07/20/2016 |
2015AA (Archived) | 06/09/2015 | 06/09/2015 |
2014AB (Archived) | 01/29/2015 | 01/29/2015 |
2014AA (Archived) | 05/28/2014 | 05/28/2014 |
2013AB (Archived) | 02/18/2014 | 02/18/2014 |
2013AA (Archived) | 01/14/2014 | 01/14/2014 |
2013AA (Archived) | 05/08/2013 | 09/25/2013 |
more... |
- MedDRA French
- This is the French translation of the Medical Dictionary for Regulatory Activities (MedDRA).
- MedDRA German
- This is the German translation of the Medical Dictionary for Regulatory Activities (MedDRA).
Classes | 81,485 |
Individuals | 0 |
Properties | 13 |
Maximum depth | 7 |
Maximum number of children | 0 |
Average number of children | 0 |
Classes with a single child | 0 |
Classes with more than 25 children | 0 |
Classes with no definition | 81,255 |
Jump to:
Id | http://purl.bioontology.org/ontology/MEDDRA/20000086
http://purl.bioontology.org/ontology/MEDDRA/20000086
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Preferred Name | Blood premalignant disorders (SMQ) |
Definitions |
Premalignant lesions: morphologically identifiable lesions that sometimes precede the development of invasive cancer o Also called precancers, preneoplastic lesions, incipient cancers, intraepithelial neoplasias, and preinvasive cancers o May lack constitutive properties of cancer o May have certain attributes that are absent in cancers o Need not progress to cancer o Often have a high rate of regression o When premalignant lesion progresses, cancer is the obligate outcome.
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Type | http://www.w3.org/2002/07/owl#Class |
All Properties
definition | Premalignant lesions: morphologically identifiable lesions that sometimes precede the development of invasive cancer o Also called precancers, preneoplastic lesions, incipient cancers, intraepithelial neoplasias, and preinvasive cancers o May lack constitutive properties of cancer o May have certain attributes that are absent in cancers o Need not progress to cancer o Often have a high rate of regression o When premalignant lesion progresses, cancer is the obligate outcome. |
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prefLabel | Blood premalignant disorders (SMQ)
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notation | 20000086
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Member of | |
SMQ TERM LEVEL | 0
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SMQ STATUS | A
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SMQ LEVEL | 2
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Semantic type UMLS property | |
type | |
tui | T185
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cui | C1869082
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Has member |
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SMQ SOURCE | o Classifying the precancers: A metadata approach (Jules J Berman and Donald E Henson) o Heenan PJ, Elder DJ, Sobin LH (1996) WHO International Histological Classification of Tumors. Berlin, Heidelberg, New York, Tokyo: Springer o Berman JJ, Henson DE. A Comprehensive Classification and Data Implementation for the Precancers. http://www.pathinfo.com/jjb/preclass.htm o 2002Harrison's Principles of Internal Medicine, 16th Edition o Dorland's Medical Dictionary o Various web sites including eMedicine, Medline Plus and the Merck Manual
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SMQ ALGO | N
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Widget type | Widget demonstration |
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Step 2: Follow the Instructions
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Example 1 (start typing the class name to get its full URI)
Example 2 (get the ID for a class) Example 3 (get the preferred name for a class) Step 2: Follow the Instructions
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Step 2: Follow the InstructionsCopy the code below and paste it to your HTML page <iframe frameborder="0" src="/widgets/visualization?ontology=MEDDRA&class=http%3A%2F%2Fpurl.bioontology.org%2Fontology%2FMEDDRA%2F10001665&apikey=YOUR_API_KEY"></iframe> For more help visit NCBO Widget Wiki |