Therapy of genetic diseases: a three-level approach
Related Experiment Video
Updated: Aug 10, 2026

In Vivo Modeling of the Morbid Human Genome using Danio rerio
Published on: August 24, 2013
Abstract:
Therapy of genetic diseases may be attempted at three different levels in the evolution of the disease process. At the first level, after clinical manifestations have appeared, methods are symptomatic and include diet, drugs, surgery, and avoidance of hazardous substances. At the second level, midway between the origin of the disease and the appearance of clinical manifestations, therapy consists of administration of a normal gene product, such as insulin in diabetes and factor VIII in hemophilia. At the third level, the origin of the disease, methods involve correcting the gene defect and are currently under investigation.
Insights
Genetic disease treatments target different stages, from symptom management to gene correction. Current research focuses on addressing the root genetic defect for potential cures.
Area of Science:
- Genetics
- Medical Science
- Pharmacology
Background:
- Genetic diseases present complex therapeutic challenges.
- Treatment strategies vary based on disease progression and available interventions.
Purpose of the Study:
- To outline the different levels of therapeutic intervention for genetic diseases.
- To categorize current and emerging treatment modalities.
Main Methods:
- Symptomatic treatment after clinical manifestation (diet, drugs, surgery).
- Gene product replacement therapy before clinical manifestation (e.g., insulin, factor VIII).
- Gene defect correction at the disease origin (under investigation).
Main Results:
- Three distinct therapeutic levels identified: symptomatic, gene product replacement, and gene correction.
- Symptomatic therapies manage disease after onset.
- Gene product replacement addresses deficiencies before symptoms appear.
Conclusions:
- Therapeutic approaches for genetic disorders are stratified according to disease evolution.
- Gene defect correction represents the most advanced and investigational level of treatment.
- Future therapies aim to correct genetic defects at their origin.
More Related Videos
08:22A Novel Strategy Combining Array-CGH, Whole-exome Sequencing and In Utero Electroporation in Rodents to Identify Causative Genes for Brain Malformations
Published on: December 1, 2017
09:37Defining Gene Functions in Tumorigenesis by Ex vivo Ablation of Floxed Alleles in Malignant Peripheral Nerve Sheath Tumor Cells
Published on: August 25, 2021
Related Concept Videos
What is Genetic Engineering?
Gene Therapy
Genetic Screens
Forward genetic screens
Forward or “classical” genetic screens involve creating random mutations in an organism’s DNA using radiation, mutagens, or insertion of additional bases, which result in visible changes...
Gene Therapy
Pharmacogenetics of Drug Targets: β₂-Adrenergic Receptors, Apo E, Thymidylate Synthase
Pharmacogenomics: Identification of New Drug Targets