What breakthrough has Zentrogene Laboratory achieved in twin pregnancy genetic testing?

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Zentrogene Laboratory Achieves Breakthrough in Twin Pregnancy Genetic Testing by Precisely Identifying Fetal Sex

Zentrogene Laboratory has successfully developed and launched its 'Y Precision' testing technology, a significant advancement in Next-Generation Sequencing (NGS) that enables precise gender determination for twin pregnancies. This innovation overcomes the limitations of previous methods, allowing for the accurate distinction between male-female and male-male twins, and substantially improving the precision of fetal cell-free DNA (cfDNA) analysis. The technology achieves this through three key breakthroughs: Fetal Signal Assessment, Contamination Identification, and Twin Pregnancy Precision Analysis.
Precise Identification of Fetal Sex in Twins

The 'Y Precision' technology marks a first in the precise identification of gender in twin pregnancies. Traditional quantitative polymerase chain reaction (qPCR) platforms could only detect the presence of the Y chromosome qualitatively, making it impossible to differentiate between a twin pregnancy with two males (MM) and one with a male and a female (MF). Zentrogene's NGS-based approach, however, allows for the independent analysis of X and Y chromosome fragments, thereby accurately distinguishing between these scenarios.
Enhanced Accuracy in Fetal cfDNA Analysis

This new technology significantly enhances the accuracy of fetal cell-free DNA (cfDNA) analysis. A crucial component is the Fetal Signal Assessment, which employs whole-genome SNP scanning. This process not only confirms the presence of a fetal signal but also precisely quantifies the fetal fraction and determines the number of distinct fetal signals present, providing a more robust foundation for analysis.
Differentiating True Fetal Signals from Contamination

Another key breakthrough is the technology's capability for Contamination Identification. It can effectively differentiate between false signals, such as Y chromosome fragments that may arise from contamination, and true fetal signals. This distinction is critical for ensuring the reliability of test results, especially in scenarios where residual male cfDNA might be present following fetal reduction procedures.
Global Technology Matrix and Future Applications

As a pioneer in Hong Kong's genetic testing sector, Zentrogene has established a comprehensive global technology matrix. This matrix spans applications in pre-pregnancy, prenatal diagnostics, and oncology, leveraging both its integrated Sanger sequencing and NGS platforms. The development of 'Y Precision' technology underscores Zentrogene's strategic focus on 'Technology-Driven Globalization,' aiming to deliver advanced precision medical solutions worldwide.

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What breakthrough has Zentrogene Laboratory achieved in twin pregnancy genetic testing?

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