Decreased Blood Leukocyte Number
UMLS: C0023530
Basic Information
Severity Level:
Severe
Based on 1 similar ADEs (max similarity: 0.497), includes 1 severe case(s)
Definition:
A decrease in the number of LEUKOCYTES in a blood sample below the normal range (LEUKOCYTE COUNT less than 4000).
UMLS ID:
C0023530
MeSH ID:
Synonyms:
Decreased Blood Leukocyte Number
Leucopenia
Leukopenia
Leucopenia, Nos
Leukocytopenia
Leukocytopenia, Unspecified
Leukopenia
Leukopenia, Nos
Low White Blood Cell Count
Leucopenia
Leukocytopenia
Leukopenia
Pharmacogenomic Information
PharmGKB
PharmGKB References:
Risk-Increasing Variants (71)
CYP2C9 poor metabolizer
Effect:
Risk Increase
CYP3A5*1, CYP3A5*3
Effect:
Risk Increase
DPYD c.2194G>A (*6)
Effect:
Risk Increase
DPYD c.85T>C (*9A)
Effect:
Risk Increase
NUDT15*1, NUDT15*2, NUDT15*3, NUDT15*4, NUDT15*5, NUDT15*6
Effect:
Risk Increase
NUDT15*1, NUDT15*2, NUDT15*3, NUDT15*4, NUDT15*6
Effect:
Risk Increase
Risk-Decreasing Variants (18)
DPYD c.1627A>G (*5)
Effect:
Risk Decrease
rs16952570
Effect:
Risk Decrease
rs1933437
Effect:
Risk Decrease
rs2017869
Effect:
Risk Decrease
rs2032582
Effect:
Risk Decrease
rs212087
Effect:
Risk Decrease
Total Variants:
89
Risk Increase:
71
Risk Decrease:
18
Classification Hierarchy
MeSH Tree Number breakdown for C0023530
C15
Hemic and Lymphatic Diseases
C15.378
Hematologic Diseases
C15.378.553
Leukocyte Disorders
C15.378.553.546
Leukopenia
C15
Hemic and Lymphatic Diseases
C15.378
Hematologic Diseases
C15.378.553
Leukocyte Disorders
C15.378.553.546
Leukopenia
ADE Molecular Mechanism Mapping
Drug-ADE-Human Protein Triplets
Molecular mechanism triplets showing drug-adverse event-protein relationships
106
Total Triplets
13
High Confidence
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Personalized Drug-Protein-ADE Network
Comprehensive Information for Personalized ADE
Comprehensive Information and Reliability for Drug-ADE Association
Drug Confidence Filter
DTA Confidence Level
Layout Style
Show Labels
Total Drugs
1690
191 High |
192 Medium |
1307 Low Confidence
Total Proteins
6
Target proteins associated with this ADE
Drug-Protein-ADE association
892
6 Known |
7 High |
93 Middle |
786 Low Confidence
Confidence Profile
12%
Known/High/Middle-confidence interactions
This interactive network visualization shows the relationships between the top 50 drugs (ranked by case number) out of 1690 total drugs associated with this adverse event, their known and potential off-target proteins, and the associated adverse effect. The connections indicate binding interactions and mechanistic pathways.
Adverse Drug Event (ADE)
Drug
Protein
Drug-Center
Human Protein-Center
confidence level
Drug Confidence Level Distribution
Drug Type Distribution
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Pharmacological Target Class Distribution
Top 8 Function Target Sub Classes
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The Introduction of Drug-AE Confidence Score Grade
| Priority Level | Score Range | Description | Evidence Characteristics |
|---|---|---|---|
| High | Score ≥ 6.67High-priority associations requiring immediate attention. | Strong evidence across multiple dimensions with high statistical significance, robust association measures, and substantial case numbers. Warrant priority pharmacovigilance action. | High P-value scores (significant Adjust-P), Strong ROR/PRR values, Substantial case numbers, Complete dimensional coverage, Minimal data filtering needed. |
| Medium | 3.33 ≤ Score < 6.67Medium-priority associations requiring careful evaluation. | Moderate evidence quality with acceptable statistical significance and association strength. May need additional validation or monitoring before definitive action. | Moderate P-value significance, Reasonable ROR/PRR measures, Adequate case numbers, Partial dimensional coverage, Some data quality considerations. |
| Low | Score < 3.33Low-priority associations with limited evidence strength. | May represent weak signals, insufficient data, or associations requiring extensive additional investigation before any regulatory or clinical consideration. | Weak P-value significance, Low association measures, Limited case numbers, Incomplete dimensional data, Significant data filtering applied. |
The Introduction of Drug-AE Severity Score Grade
| Severity Level | Score Range | Description | Typical outcomes |
|---|---|---|---|
| Minimal | 0 ≤ Score ≤ 0.387 Low severity ADRs requiring minimal intervention. | Events that need medical attention to prevent permanent damage but without hospitalization or life-threatening consequences. | Primarily RI (Required Intervention) outcomes, Outpatient management, Preventive measures, Early intervention prevents escalation. |
| Mild | 0.387 < Score ≤ 0.861 Mild severity events requiring hospitalization. | Mix of intervention-required and hospitalization cases with manageable clinical outcomes and good recovery potential. | Mix of RI and HO outcomes, Initial or prolonged hospitalization, Active medical management, Generally favorable prognosis. |
| Moderate | 0.861 < Score ≤ 1.500 Moderate ADRs resulting in permanent disability. | Higher proportion of hospitalization and disability cases requiring intensive medical management and long-term care planning. | Increased HO and DS outcomes, Permanent disability, Extended hospitalization, Rehabilitation required, Long-term functional impairment. |
| Severe | 1.500 < Score ≤ 2.52High severity life-threatening events with significant morbidity. | Notable presence of disability and life-threatening outcomes requiring emergency intervention and intensive care management. | Prominent DS and LT outcomes, Life-threatening events, Emergency intervention required, ICU admission, High risk of permanent consequences. | Critical | 2.524 < Score ≤ 5.000Critical life-threatening or fatal ADRs with maximum clinical impact. | High proportion of life-threatening events and deaths with very strong drug-event associations requiring immediate regulatory action. | Significant LT and DE outcomes, Fatal events, Emergency life-support measures, Immediate drug discontinuation, Regulatory safety alerts. |
The Introduction of Drug-AE-Protein Confidence Score Grade
| Confidence Level | Relationships | Description | Evidence Types |
|---|---|---|---|
| Known/Valid | Direct DTA relationships | The drug-ADE, drug-target, and target-ADE associations are all derived from the same literature source. | Experimental validation, Clinical evidence |
| High | DT + TA + DA | Two of the three associations (drug-ADE, drug-target, and target-ADE) are derived from the same literature source, while the third is validated by other literature. | Multiple corroborating sources |
| Medium | DT + TA + DA | Two of the three associations (drug-ADE, drug-target, and target-ADE) are validated by separate literature sources. | Partial evidence chain |
| Low | TA + DT | Only target-ADE and drug-target associations are validated by literature sources. | Associative evidence only |
Personalized ADE
Route and Formulation-specified Associations
Pharmaceutic Granularity for Route and Formulation specification
Administration Routes (Total: 61829 cases across 32 routes)
Dosage Forms (Total: 34076 cases across 32 forms)
Drug Route Analysis
Drug Form Analysis
Drug Route Analysis
| Route | Drug Name | Case Number | Confidence Score | Confidence Level | Severity Score | Severity Level | Details | ||
|---|---|---|---|---|---|---|---|---|---|
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Drug Form Analysis
| Form | Drug Name | Case Number | Confidence Score | Confidence Level | Severity Score | Severity Level | Details | ||
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Disease-stratified Associations
Personalized Granularity for Disease and Indication Stratification
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Indication Name
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Drug Name
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Case Number
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Confidence Score
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Confidence Level
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Severity Score
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Severity Level
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Details |
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