Hydrops fetalis and SCN4A gene variants
Author Information
Author(s): Kubota Tomoya, Nagata Miho, Takagi Kazuko, Ishihara Yasuki, Kojima Kurumi, Uchikura Yuka, Yamamoto Reina, Yonei Ayumi, Ozaki Erina, Kira Natsuki, Takahashi Satoe, Homma Kazuaki, Miyashita Yohei, Eguchi-Ishimae Minenori, Sakai Norio, Asano Yohihiro, Sakata Yasushi, Ozono Keiichi, Eguchi Mariko, Takahashi Masanori
Primary Institution: Osaka University Graduate School of Medicine
Hypothesis
Can compound heterozygous variants of the SCN4A gene lead to hydrops fetalis and fetal death?
Conclusion
The study found that specific SCN4A gene variants are linked to hydrops fetalis and can result in fetal death.
Supporting Evidence
- Whole-exome sequencing identified compound heterozygous variants in the SCN4A gene in all three infants.
- Functional analysis showed that one variant caused a complete loss of ionic current.
- The other variant exhibited reduced channel opening, indicating loss-of-function defects.
Takeaway
This study looked at three babies who died with a condition called hydrops fetalis and found that they had similar gene changes that might have caused their deaths.
Methodology
Whole-exome sequencing was used to identify gene variants, followed by functional analysis using whole-cell patch-clamp technique.
Limitations
The study did not include histological examinations of the skeletal muscle of the babies.
Participant Demographics
Three deceased infants from a nonconsanguineous family.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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