Diagnosis, Genetic Counseling and Risk Assessment in Alzheimer’s Disease: Methodologies, Implications, and Ethical Considerations

Introduction: Alzheimer’s disease (AD) is a complex neurodegenerative disorder with significant genetic and environmental components. Accurate diagnosis, genetic counseling, and risk assessment are essential for managing the disease and informing preventive and therapeutic strategies. Materials and Methods: The study conducted included a comprehensive review of current diagnostic criteria for AD, including the NINCDS-ADRDA, DSM-V-TR, and Romanian guidelines. The study examined methodologies for genetic counseling and risk assessment, focusing on both early-onset (EOAD) and late-onset (LOAD) forms of AD. The analysis integrated data from clinical evaluations, neuroimaging, genetic testing, and empirical risk tables to assess recurrence risks and provide guidance for genetic counseling. Results and Discussion: Diagnostic criteria for AD require the presence of cognitive deficits, progressive neurodegenerative processes, and exclusion of other conditions. Genetic counseling involves assessing family history, calculating recurrence risks based on empirical data table, and considering both mendelian and non-mendelian inheritance patterns. Genetic risk factors, such as mutations in PSEN2, APP, PSEN1, and APOE ε4, significantly influence the likelihood of developing AD. The recurrence risk is categorized into low, moderate, high, and very high levels, depending on genetic findings and familial patterns. The counseling process must be personalized, taking into account the patient's educational level, psychological state, and ethical considerations. Conclusion: Accurate diagnosis and effective genetic counseling are crucial for managing AD and informing at-risk individuals. Understanding genetic risk and recurrence probabilities aids in personalized prevention strategies and decision-making. Genetic counselors play a vital role in providing tailored advice while adhering to ethical standards and ensuring informed, empathetic communication with patients and their families.