What Is the NGS-Based Immune Compatibility Test?
The NGS-Based Immune Compatibility Test is an advanced genetic analysis used to evaluate the immunological compatibility between partners during fertility treatment. Using Next Generation Sequencing (NGS) technology, this test examines key immune system genes such as HLA and KIR to understand how the maternal immune system may respond to an embryo.
By analyzing the immune interaction between the embryo and the uterus, this test helps fertility specialists identify potential implantation problems and design a more personalized IVF treatment strategy.
The NGS-Based Immune Compatibility Test may be recommended for patients who experience:
- Repeated IVF failures
- Recurrent miscarriages
- Biochemical pregnancies
- Unexplained infertility
Understanding immune-related implantation factors can help improve treatment planning and pregnancy outcomes.
Purpose of the NGS-Based Immune Compatibility Test
The main purpose of the NGS-Based Immune Compatibility Test is to detect immune-related genetic factors that may influence embryo implantation.
This analysis helps fertility specialists to:
- Identify immune-related implantation problems
- Detect HLA–KIR incompatibilities between partners
- Develop personalized immune treatment strategies
- Investigate causes of repeated IVF failure
- Improve donor matching in egg donation or sperm donation treatments
Because of these advantages, immune compatibility testing is increasingly used as part of personalized reproductive medicine.
What Does the NGS-Based Immune Compatibility Test Analyze?
The test evaluates several genetic immune markers that influence embryo implantation and maternal immune tolerance.
HLA Gene Types
Human Leukocyte Antigen (HLA) genes are essential components of the immune system. During testing, the HLA gene structures of both partners are analyzed.
If partners have very similar HLA profiles, implantation signals may become weaker. In contrast, extremely different genetic profiles may trigger immune reactions during implantation.
KIR Receptor Profile
The test also evaluates KIR receptors, which are located on uterine Natural Killer (NK) cells.
Certain KIR genetic patterns may influence pregnancy outcomes. For example:
- KIR AA genotype may be associated with lower implantation success in some cases
- KIR B haplotype is often linked with more favorable pregnancy outcomes
HLA-C Ligand Compatibility
The interaction between the embryo’s HLA-C type and the mother’s KIR receptors plays an important role in implantation.
This immune interaction influences how the maternal immune system responds to the embryo during early pregnancy.
Genetic Similarity Between Partners
The test also evaluates the overall genetic similarity between partners.
- Very high similarity → weaker implantation signaling
- Very high genetic difference → possible immune rejection
Understanding this balance may help explain certain unexplained fertility problems.
Who Should Consider the NGS-Based Immune Compatibility Test?
The NGS-Based Immune Compatibility Test may be recommended for patients who experience:
- Three or more failed IVF attempts
- Recurrent pregnancy loss
- Repeated biochemical pregnancies
- Unexplained infertility
- Suspected elevated NK cell activity
- Egg donation, sperm donation, or embryo donation treatments
- Surrogacy planning
Fertility specialists may suggest this test when immune-related factors are suspected to affect implantation.
How Is the NGS-Based Immune Compatibility Test Performed?
The procedure is simple and minimally invasive.
Blood Sample Collection
A blood sample is taken from both partners.
Genetic Sequencing
DNA is analyzed using Next Generation Sequencing technology.
Immune Gene Analysis
HLA and KIR genetic regions are evaluated in specialized laboratories.
Clinical Report and Interpretation
A detailed immune compatibility report is prepared, and fertility specialists review the results to determine whether additional treatments may be beneficial.
If necessary, personalized immune support treatments may be recommended, such as:
- Intralipid therapy
- IVIG treatment
- Corticosteroid protocols
- Hormonal support
- Personalized embryo transfer strategies
Advantages of the NGS-Based Immune Compatibility Test
The NGS-Based Immune Compatibility Test provides several advantages in fertility evaluation.
- Higher precision compared with traditional HLA testing
- Better detection of immune-related implantation problems
- Support for personalized fertility treatment planning
- Improved donor selection in egg or sperm donation treatments
- Potential improvement in pregnancy and live birth rates
These benefits help doctors design more individualized treatment strategies.
Impact of the Test on IVF Treatment
Results from the NGS-Based Immune Compatibility Test can influence IVF treatment planning.
For example:
- KIR AA + HLA-C2 embryo combinations may require additional immune support treatment
- Couples with high HLA similarity may benefit from implantation-enhancing protocols
- In donor treatments, the most compatible donor may be selected
- Immune-related causes of recurrent pregnancy loss may be addressed
By identifying immune-related factors, fertility specialists can create a more personalized IVF treatment plan and improve the chances of successful implantation.
