Copy number variants, aneuploidies, and human disease

Area of Science:

• Genetics
• Perinatal Medicine
• Genomic Medicine

Background:

• Chromosome imbalances are linked to significant disorders and phenotypes in perinatal settings.
• Advancements in technology enable detection of smaller deletions and duplications, known as copy number variants (CNVs).
• CNVs are increasingly recognized for their significant role in human disease, occurring in about 1% of all pregnancies.

Purpose of the Study:

• To highlight key aspects of CNV detection and interpretation in clinical care.
• To emphasize the importance of early diagnosis and accurate interpretation of CNVs.
• To inform clinical management strategies for perinatal and neonatal conditions related to CNVs.

Main Methods:

• Review of current technologies for detecting copy number variants (CNVs).
• Analysis of interpretation methodologies for genomic variants in prenatal and neonatal contexts.
• Discussion of clinical care pathways involving CNV assessment.

Main Results:

• CNVs play a significant role in human disease and are frequent in pregnancies.
• Improved technologies enhance the detection of small deletions and duplications.
• Accurate interpretation of CNVs is crucial for clinical decision-making.

Conclusions:

• Early diagnosis of CNVs in the perinatal and neonatal periods is essential.
• Accurate interpretation of CNVs guides targeted clinical management.
• Understanding CNVs improves the care of infants with genetic disorders.