20.500.12556/DiRROS-12635
Functional complement analysis can predict genetic testing results and long-term outcome in patients with complement deficiencies
Background: Prevalence of complement deficiencies (CDs) is markedly higher in Slovenian primary immunodeficiency (PID) registry in comparison to other national and international PID registries.
Objective: The purposes of our study were to confirm CD and define complete and partial CD in registered patients in Slovenia, to evaluate frequency of clinical manifestations, and to assess the risk for characteristic infections separately for subjects with complete and partial CD.
Methods: CD was confirmed with genetic analyses in patients with C2 deficiency, C8 deficiency, and hereditary angioedema or with repeated functional complement studies and measurement of complement components in other CD. Results of genetic studies (homozygous subjects vs. heterozygous carriers) and complement functional studies were analyzed to define complete (complement below the level of heterozygous carriers) and partial CD (complement above the level of homozygous patients). Presence of characteristic infections was assessed separately for complete and partial CD.
Results: Genetic analyses confirmed markedly higher prevalence of CD in Slovenian PID registry (26% of all PID) than in other national and international PID registries (0.5–6% of all PID). Complement functional studies and complement component concentrations reliably distinguished between homozygous and heterozygous CD carriers. Subjects with partial CD had higher risk for characteristic infections than previously reported.
Conclusion: Results of our study imply under-recognition of CD worldwide. Complement functional studies and complement component concentrations reliably predicted risk for characteristic infections in patients with complete or partial CD. Vaccination against encapsulated bacteria should be advocated also for subjects with partial CD and not limited to complete CD.
complement deficiency
primary immunodeficiency
laboratory analysis
genetic analysis
clinical manifestations
true
false
true
Frontiers Reserach Foundation
Angleški jezik
Ni določen
© 2018 Blazina, Debeljak, Košnik, Simčič, Stopinšek, Markelj, Toplak, Kopač, Zakotnik, Pokorn and Avčin
Neznano
2020-11-12 14:36:45
2020-11-12 14:36:45
2022-08-18 03:38:29
0000-00-00 00:00:00
2018
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Švica
0
Nasl. z nasl. zaslona;
Opis vira z dne 17. 8. 2017;
Article 500;
str. 1-10
Vol. 9
2018
0000-00-00
Zaloznikova
Objavljeno
NiDoloceno
0000-00-00
0000-00-00
0000-00-00
616.9
1664-3224
10.3389/fimmu.2018.00500
4891564
30774233
fimmu-09-00500.pdf
fimmu-09-00500.pdf
1
F47CAB5FA71632612536352BE398A445
662c3cdb3e6d226520ed10af38ac990670c07847c2b3d61c99e33c3495bf679a
5bb4d274-17b6-11ed-b6b8-001a4af901a5
https://dirros.openscience.si/Dokument.php?lang=slv&id=15363
Univerzitetna klinika za pljučne bolezni in alergijo Golnik
0
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0