PRELIMINARY EVALUATION OF THE TECHNICAL PERFORMANCE OF PREIMPLANTATION GENETIC TESTING FOR MONOGENIC DISORDERS USING A SELF-DEVELOPED KIT

Thi Phuong Hoa Bui1,2, , Dinh Minh Pham3, Thu Huong Vu3, Van Huong Pham1, Thanh Trung Nguyen1, Thi Thanh Hai Nguyen1, Thi Huyen Trang Nguyen1,4
1 Andrology And Fertility Hospital Of Hanoi
2 Thai Binh University of Medicine and Pharmacy
3 Eurofins Genetic Testing Service Joint Stock Company
4 Hanoi Medical University

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Abstract

Objectives: To preliminarily evaluate the technical performance and clinical value of preimplantation genetic testing for monogenic disorders (PGT-M) using a Eurofins -Gentis self-developed kit in routine in vitro fertilization (IVF) practice at Hanoi Andrology and Fertility Hospital. Methods: This retrospective cross-sectional study included 32 couples with indications for PGT-M using the Eurofins -Gentis kit. Results: Among 163 biopsied blastocysts, 37 embryos (22.7%) carried pathogenic variants, 118 embryos (72.4%) were suitable for transfer, 3 embryos (1.8%) showed amplification failure, and 5 embryos (3.1%) yielded inconclusive results. The amplification success rate was 95.1%, and the diagnostic reporting rate was 96.9%. A total of 40 frozen embryo transfer cycles were performed in 28 patients, resulting in a clinical pregnancy rate of 72.5%, an ongoing pregnancy rate of 65.0%, and a live birth rate of 62.5%. In nine cases with available prenatal or postnatal confirmation, all PGT-M results were fully concordant. Conclusion: These preliminary findings indicate that the PGT-M workflow using the Eurofins kit demonstrates good technical robustness and favorable clinical outcomes in routine IVF practice. 

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References

1. Committee, P. Indications and management of preimplantation genetic testing for monogenic conditions: A committee opinion. Fertility and Sterility. 2023; 120:61-71.
2. ESHRE PGT-M working Group. ESHRE PGT Consortium good practice recommendations for the detection of monogenic disorders. Human reproduction open. 2020.
3. Li Q, Mao Y, Li S, Du H, et al. Haplotyping by linked-read sequencing (HLRS) of the genetic disease carriers for preimplantation genetic testing without a proband or relatives. BMC medical genomics. 2020; 13:117.
4. Chamayou S, Sicali M, Lombardo D, et al. Universal strategy for preimplantation genetic testing for cystic fibrosis based on next generation sequencing. Journal of Assisted Reproduction and Genetics. 2020; 37:213-222.
5. Unsal E, Aktuna S, Aydin M, et al. Improved IVF success of combined PGT-M and PGT-A applications Reproductive BioMedicine Online. 2019; 39:e69-e70.
6. Gigarel N, FN, Burlet P, Kerbrat V, et al. Preimplantation genetic diagnosis for autosomal recessive polycystic kidney disease. Reprod Biomed Online. 2008; 16:463.
7. Harris M. Systematic Review: Pregnancy and live birth rates after preimplantation genetic testing for monogenic conditions. The ObG Project. 2025.
8. Poulton A, MM, Hardy T, Lewis S, Hui L. Clinical outcomes following preimplantation genetic testing for monogenic conditions: A systematic review of observational studies. Am J Obstet Gynecol. 2024; 232:150-163.