Abstract
Background
Circulating cell-free deoxyribonucleic acid (cfDNA) is promptly materializing as a highly useful tool for the surveillance of solid-organ transplant rejection. Donor-specific fraction (DF) cfDNA is a potential marker of selective donor organ injury. It is emerging as a promising analytical target in the near future. The aim of this systematic review is to throw light on the importance of cfDNA and future perspective in detecting acute rejection in heart transplantation.
Methods
An exhaustive search was carried out for this review article on the basis of literature available including scientific databases of PubMed, Embase, and ClinicalTrials.gov. The search engines were systematically explored using the search terms “cell free DNA,” “Heart transplant,” and “Rejection” from inception until August 2020, and narrative analysis was accomplished. Majority of the studies described endomyocardial biopsy-proven acute rejection as reference standard.
Results
After initial screening of 331 articles, 11 studies were included and discussed in detail in the present review article. Majority of the studies showed prospective designs. A firm correlation was noted between acute rejection (identified on endomyocardial biopsy) and cfDNA levels by most of the studies.
Conclusions
cfDNA is a promising tool to replace repeated biopsies to detect rejection. The development in the area of digital droplet polymerase chain reaction and massive parallel sequencing, along with the overall reduction in cost of sequencing with its automation, has helped establish its role in the transplant population.
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Data availability
All data used in the analysis are already available in the literature, and data sources are reported in the article.
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Sharma, D., Subramaniam, G., Sharma, N. et al. Cell-free DNA in the surveillance of heart transplant rejection. Indian J Thorac Cardiovasc Surg 37, 257–264 (2021). https://doi.org/10.1007/s12055-020-01130-9
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DOI: https://doi.org/10.1007/s12055-020-01130-9