Abstract
Objective
To investigate the usefulness of preimplantation genetic diagnosis (PGD) based on mutated allele revealed by sequencing with aneuploidy and linkage analyses (MARSALA) for a pedigree with X-linked retinitis pigmentosa (XLRP).
Methods
One pathogenic mutation (c.494G > A) of the retinitis pigmentosa GTPase regulator (RPGR) gene was identified in a pedigree affected by XLRP. Then, PGD was carried out for the couple, of which the wife was an XLRP carrier. Three blastocysts were biopsied and then MARSALA was performed by next-generation sequencing (NGS). Prenatal diagnosis was also carried out to confirm the PGD results.
Results
Three blastocysts were all unaffected. Then, one of the embryos was chosen randomly to be transferred, and the pregnancy was acquired successfully. The results of prenatal diagnosis were consistent with the PGD results. The fetus did not carry RPGR mutation (c.494G > A) and had normal chromosome karyotype. As a result, a healthy baby free of XLRP condition was born.
Conclusion
The PGD method based on MARSALA was established and applied to a family with XLRP successfully. MARSALA will be a valid tool, not only for XLRP families but also for families affected with other monogenetic disorders, to prevent transmission of the genetic disease from parents to offspring.
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Acknowledgements
We thank the family for their participation in this study.
Funding
This work was supported by the Natural Science Foundation of Fujian Province, China (No. 2016J01589, No. 2018J01348).
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The couple signed informed consent forms for ICSI treatment, PGD, and follow-up. The protocols for this study were evaluated and approved by the Ethics Committee of Fuzhou General Hospital.
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The authors declare that they have no conflict of interest.
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Huang, X., Liu, Y., Yu, X. et al. The clinical application of preimplantation genetic diagnosis for X-linked retinitis pigmentosa. J Assist Reprod Genet 36, 989–994 (2019). https://doi.org/10.1007/s10815-019-01434-9
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DOI: https://doi.org/10.1007/s10815-019-01434-9