Genetic examinations list
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Testing for the most common NBN (NBS1) gene mutation – Nijmegen breakage syndrome, primary microcephaly
Testing for the most common c.511A>G (p.Ile171Val), c.643C>T (p.Arg215Trp) and c.657_661delACAAA (p.Lys219Asnfs*16) mutations in the NBN gene (NBS1) responsible for Nijmegen breakage syndrome by Sanger sequencing.
Material:
Peripheral blood, Buccal swab …Turnover Time:
3 weeksSTATIM
3 daysCascade testing for GJB2 gene mutation (for Connexin 26) – early non-syndromic AR deafness
Testing for GJB2 gene mutations (gap junction beta 2) responsible for hereditary autosomal recessive disease, early non-syndromic disorder/hearing loss and deafness, also referred to as DFNB1.
Material:
Peripheral blood, Buccal swab …Turnover Time:
3 weeksSTATIM
1 weekStereocilin gene fragmentation analysis
Targeted testing for STRC gene deletion by QF-PCR (Stereocilin gene) responsible for hearing impairment DFNB16.
Material:
Peripheral blood, Buccal swab …Turnover Time:
3 weeksSTATIM
3 daysDetection of deletions in genes associated with hearing impairment
Testing for STRC, OTOA, CATSPER2 gene duplication/deletion by Multiplex Ligation-dependent Probe Amplification (MLPA), responsible for hearing impairment: DFNB16, DFNB22.
Material:
Peripheral blood, Buccal swab …Turnover Time:
3 weeksSTATIM
3 daysHLA-C (C1/C2) Genotyping
HLA-C typing at the allelic resolution level is used for the detailed determination of HLA-C gene variants. This gene plays a crucial role in the communication between the mother's immune system and the developing embryo during pregnancy. HLA-C analysis helps identify specific combinations of maternal and fetal genes that may be associated with a higher risk of complications such as recurrent miscarriages, preeclampsia, intrauterine growth restriction (IUGR), or preterm birth. We recommend combining it with the KIR haplotype determination method.
Material:
Peripheral blood, Isolated DNA from bloodTurnover Time:
3 weeksSTATIM
2 weeksKIR (Killer-cell immunoglobulin-like receptor) haplotype evaluation
The KIR haplotype (A/B) determination method allows for the identification of the mother's genetic makeup in the region of KIR receptors. These receptors play a crucial role in the communication between the mother's immune system and the embryo during pregnancy, where they recognize HLA-C molecules on the embryo's surface. Analysis of the KIR haplotype can help reveal specific maternal genotypes that, in combination with the fetal HLA-C, may be associated with a higher risk of pregnancy complications.