OMOP CDM
OMOP Common Data Model (OHDSI / MSDA Harmonized Clinical Schema)
OMOP共通データモデル（OHDSI / MSDA リアルワールドデータ標準スキーマ）
1. Biological & Technical Mechanism
Maintained by the Observational Health Data Sciences and Informatics (OHDSI) consortium, the Observational Medical Outcomes Partnership Common Data Model (OMOP CDM) standardizes both the structure (tables such as PERSON, CONDITION_OCCURRENCE, DRUG_EXPOSURE, MEASUREMENT, OBSERVATION) and the semantic content (standardized vocabularies) of observational healthcare data. In Multiple Sclerosis research, the MS Data Alliance (MSDA) Core Dataset maps 44 core MS variables—including longitudinal EDSS subscores, relapse onset/recovery dates, MRI T2/Gd+ lesion counts, and DMT start/stop episodes—directly into OMOP CDM.
OMOP CDM（Observational Medical Outcomes Partnership Common Data Model）は、国際コンソーシアム OHDSI が策定している医療リアルワールドデータ（RWD）の標準規格です。施設や国ごとに異なるデータベース��カラム名やローカル疾患コードを、統一されたテーブル群（PERSON, CONDITION_OCCURRENCE, DRUG_EXPOSURE, MEASUREMENT等）と標準オントロジーへマッピングします。多発性硬化症領域では MS Data Alliance（MSDA）が中核44変数のOMOPマッピング規約を公開しており、生の患者データを外部へ持ち出すことなくDockerコンテナ経由で同一の解析スクリプトを各施設で実行する「連合解析（Federated Analytics / Federated Learning）」の基盤となっています。
2. Open Science & Clinical Trial Significance
OMOP CDM enables privacy-compliant (GDPR/HIPAA) real-world evidence studies across >100,000 MS patients in the MSDA and BigMS networks.
GDPRやHIPAA等の厳格な医療プライバシー規制を遵守しつつ、数万人規模の多国籍コホートで疾患修飾薬（DMT）の長期安全性やPIRA抑制効果を検証するための必須インフラ規格です。
Related Neuroscience Terms & Standards
Standard 0.0–10.0 ordinal clinical rating scale quantifying neurological disability across 8 functional systems and ambulation capacity in Multiple Sclerosis.
Irreversible accumulation of neurological disability occurring outside of clinical relapses, driven by diffuse smoldering neuroinflammation, chronic active lesions, and neuroaxonal loss in MS.
International consensus diagnostic framework integrating clinical attacks, MRI topography (Dissemination in Space/Time, optic nerve, CVS, PRLs), and CSF oligoclonal bands to diagnose MS.
Community ISO-aligned standard for organizing and describing neuroimaging (MRI, fMRI, dMRI, PET) and neurophysiological (EEG, MEG, iEEG) datasets.
Open Datasets & Research Publications Related to OMOP CDM
Global Data Sharing Initiative (GDSI): Containerized Federated Analysis Pipeline for MS Registries
International federated research initiative and containerized query framework allowing participating national MS registries to analyze disease-modifying therapy (DMT) safety, anti-CD20 outcomes, and PIRA progression without transferring identifiable patient data.
MSDA Core Dataset (CDS): Standardized Global Real-World Data Harmonization Framework for Multiple Sclerosis
The MSDA Core Dataset (CDS) establishes a 44-variable international harmonization schema mapped to the OMOP Common Data Model, enabling privacy-preserving federated analytics across global Multiple Sclerosis registries.
MSDA Global Registry & Cohort Metadata Discovery Catalogue (BigMS Network)
A centralized metadata discovery catalogue indexing over 30 national and international MS registries (>120,000 patients), detailing variable availability for EDSS, relapse history, MRI, fluid biomarkers, and DUA governance.
GDSI Mock Data Generator & OMOP Quality Assessment Pipeline
Python-based synthetic clinical data generator developed by MSDA for benchmarking and validating local registry extraction scripts, EDSS roving baseline calculations, and OMOP CDM conformance.
Disclaimer: This encyclopedia entry is intended for academic neuroscience research and data science reference only, and does not constitute medical advice.