Challenges and Pitfalls in Diagnosing Twins With Discordant BWS Phenotype

Area of Science:

• Genetics
• Pediatrics
• Oncology

Background:

• Beckwith-Wiedemann syndrome (BWS) presents with variable phenotypes, complicating diagnosis, especially in twins.
• Discordant phenotypes in twins necessitate careful evaluation for accurate BWS diagnosis.
• Early and precise diagnosis is vital for timely oncological surveillance and management.

Purpose of the Study:

• To emphasize the importance of accurate Beckwith-Wiedemann syndrome diagnosis in twins with discordant phenotypes.
• To recommend comprehensive diagnostic approaches for BWS in twin gestations.
• To highlight the need for integrating specific prenatal factors into BWS diagnostic criteria.

Main Methods:

• Review of diagnostic criteria for Beckwith-Wiedemann syndrome.
• Analysis of twin cases with discordant BWS phenotypes.
• Inclusion of prenatal factors such as assisted reproduction technologies and twin pregnancies in diagnostic considerations.

Main Results:

• Accurate diagnosis of BWS in discordant twins is critical for personalized cancer risk management.
• Testing both twins, irrespective of phenotypic expression, is recommended.
• Prenatal factors significantly influence the diagnostic scoring for BWS.

Conclusions:

• A thorough diagnostic approach is essential for BWS in twins with discordant phenotypes.
• Incorporating prenatal history and testing both twins improves diagnostic accuracy.
• This strategy facilitates tailored oncological monitoring and management for affected individuals.