Genetic Mutations and Syndromes

📋 Course Outline

1. Genetic Mutation Fundamentals
2. Inheritance Patterns and Mutation Types
3. Alagille Syndrome
4. McCune–Albright Syndrome
5. Primary Ciliary Dyskinesia
6. Treacher Collins Syndrome

📖 1. Genetic Mutation Fundamentals

🔑 Key Concepts & Definitions

• Genetic mutation : A permanent alteration of the DNA sequence that can produce a clinically significant syndrome.

★ Must-know

📌 Germ-cell mutations can be inherited, whereas somatic-cell mutations arise in body cells and may result from environmental factors such as radiation.

Further detail

• Genetic mutations can participate in physiologic and pathologic processes, including evolution, immune-system development, and cancer.

• Major complications of genetic mutations include spontaneous abortion, severe organ defects such as tetralogy of Fallot and renal dysplasia, visual or hearing disturbances, growth deficiency, intellectual disability, and cancer.

💡 Memory Hook

DNA alteration → altered protein or gene expression → disease

📖 2. Inheritance Patterns and Mutation Types

📝 Essential Points

• A point mutation substitutes one DNA base and may be a transition between two purines or two pyrimidines, or a transversion between a purine and a pyrimidine.