Genetic diagnosis in the fetus

Area of Science:

• Medical Genetics
• Prenatal Diagnosis

Background:

• Genetic disorders are increasingly detectable prenatally due to advancements in molecular genetic testing.
• Indications for prenatal genetic testing are diverse, ranging from ultrasound anomalies to family history and parental concerns.

Purpose of the Study:

• To review current prenatal genetic testing modalities.
• To discuss the interpretation challenges of prenatal genetic variants.
• To guide the optimal use of these tests for perinatal care.

Main Methods:

• Review of available prenatal genetic testing techniques.
• Discussion of preimplantation genetic testing, cell-free DNA testing, chorionic villus sampling, amniocentesis, and percutaneous umbilical blood sampling.
• Analysis of strengths, weaknesses, and applications of each modality.

Main Results:

• Various genetic testing modalities exist for prenatal diagnosis.
• Interpretation of prenatal genetic variants presents unique challenges.
• Optimal use of testing strategies is crucial for directing perinatal care.

Conclusions:

• Prenatal genetic testing has advanced significantly, offering various diagnostic options.
• Understanding the strengths and limitations of each method is key for effective genetic diagnosis.
• Informed application of prenatal genetic testing aids in crucial pregnancy management decisions.