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. 2019 Jul 19:10:1272.
doi: 10.3389/fimmu.2019.01272. eCollection 2019.

The German National Registry of Primary Immunodeficiencies (2012-2017)

Sabine M El-Helou  1   2 Anika-Kerstin Biegner  1 Sebastian Bode  1   3 Stephan R Ehl  1   3 Maximilian Heeg  1   3 Maria E Maccari  1   3 Henrike Ritterbusch  1   3 Carsten Speckmann  3   1 Stephan Rusch  1   4 Raphael Scheible  1   5 Klaus Warnatz  6   7 Faranaz Atschekzei  8 Renata Beider  8 Diana Ernst  8 Stev Gerschmann  8 Alexandra Jablonka  8 Gudrun Mielke  8 Reinhold E Schmidt  8 Gesine Schürmann  8 Georgios Sogkas  8 Ulrich H Baumann  9 Christian Klemann  9 Dorothee Viemann  9 Horst von Bernuth  10 Renate Krüger  10 Leif G Hanitsch  11 Carmen M Scheibenbogen  11 Kirsten Wittke  11 Michael H Albert  12 Anna Eichinger  12 Fabian Hauck  12 Christoph Klein  12 Anita Rack-Hoch  12 Franz M Sollinger  12 Anne Avila  13 Michael Borte  13 Stephan Borte  13 Maria Fasshauer  13 Anja Hauenherm  13 Nils Kellner  13 Anna H Müller  13 Anett Ülzen  13 Peter Bader  14 Shahrzad Bakhtiar  14 Jae-Yun Lee  14 Ursula Heß  15 Ralf Schubert  15 Sandra Wölke  15 Stefan Zielen  15 Sujal Ghosh  16 Hans-Juergen Laws  16 Jennifer Neubert  16 Prasad T Oommen  16 Manfred Hönig  17 Ansgar Schulz  17 Sandra Steinmann  17 Klaus Schwarz  18 Gregor Dückers  19 Beate Lamers  19 Vanessa Langemeyer  19 Tim Niehues  19 Sonu Shai  19 Dagmar Graf  20 Carmen Müglich  21 Marc T Schmalzing  21 Eva C Schwaneck  21 Hans-Peter Tony  21 Johannes Dirks  22 Gabriele Haase  22 Johannes G Liese  22 Henner Morbach  22 Dirk Foell  23 Antje Hellige  23 Helmut Wittkowski  23 Katja Masjosthusmann  24 Michael Mohr  25 Linda Geberzahn  26 Christian M Hedrich  26   27 Christiane Müller  26 Angela Rösen-Wolff  26 Joachim Roesler  26 Antje Zimmermann  26 Uta Behrends  28 Nikolaus Rieber  28   29 Uwe Schauer  30 Rupert Handgretinger  29 Ursula Holzer  29 Jörg Henes  31 Lothar Kanz  31 Christoph Boesecke  32 Jürgen K Rockstroh  32 Carolynne Schwarze-Zander  32 Jan-Christian Wasmuth  32 Dagmar Dilloo  33 Brigitte Hülsmann  33 Stefan Schönberger  33 Stefan Schreiber  34 Rainald Zeuner  34 Tobias Ankermann  35 Philipp von Bismarck  35 Hans-Iko Huppertz  36 Petra Kaiser-Labusch  36 Johann Greil  37 Donate Jakoby  37 Andreas E Kulozik  37 Markus Metzler  38 Nora Naumann-Bartsch  38 Bettina Sobik  38 Norbert Graf  39 Sabine Heine  39 Robin Kobbe  40 Kai Lehmberg  40 Ingo Müller  40 Friedrich Herrmann  41 Gerd Horneff  41   42 Ariane Klein  41   42 Joachim Peitz  41 Nadine Schmidt  41 Stefan Bielack  43 Ute Groß-Wieltsch  43 Carl F Classen  44 Jessica Klasen  44 Peter Deutz  45 Dirk Kamitz  45 Lisa Lassay  45 Klaus Tenbrock  45 Norbert Wagner  45 Benedikt Bernbeck  46 Bastian Brummel  46 Eusebia Lara-Villacanas  46 Esther Münstermann  46 Dominik T Schneider  46 Nadine Tietsch  46 Marco Westkemper  46 Michael Weiß  47 Christof Kramm  48 Ingrid Kühnle  48 Silke Kullmann  48 Hermann Girschick  49 Christof Specker  50 Elisabeth Vinnemeier-Laubenthal  50 Henriette Haenicke  51 Claudia Schulz  51 Lothar Schweigerer  51 Thomas G Müller  52 Martina Stiefel  52 Bernd H Belohradsky  53 Veronika Soetedjo  5 Gerhard Kindle  1   4 Bodo Grimbacher  1   2   54   55
Affiliations

The German National Registry of Primary Immunodeficiencies (2012-2017)

Sabine M El-Helou et al. Front Immunol. .

Abstract

Introduction: The German PID-NET registry was founded in 2009, serving as the first national registry of patients with primary immunodeficiencies (PID) in Germany. It is part of the European Society for Immunodeficiencies (ESID) registry. The primary purpose of the registry is to gather data on the epidemiology, diagnostic delay, diagnosis, and treatment of PIDs. Methods: Clinical and laboratory data was collected from 2,453 patients from 36 German PID centres in an online registry. Data was analysed with the software Stata® and Excel. Results: The minimum prevalence of PID in Germany is 2.72 per 100,000 inhabitants. Among patients aged 1-25, there was a clear predominance of males. The median age of living patients ranged between 7 and 40 years, depending on the respective PID. Predominantly antibody disorders were the most prevalent group with 57% of all 2,453 PID patients (including 728 CVID patients). A gene defect was identified in 36% of patients. Familial cases were observed in 21% of patients. The age of onset for presenting symptoms ranged from birth to late adulthood (range 0-88 years). Presenting symptoms comprised infections (74%) and immune dysregulation (22%). Ninety-three patients were diagnosed without prior clinical symptoms. Regarding the general and clinical diagnostic delay, no PID had undergone a slight decrease within the last decade. However, both, SCID and hyper IgE- syndrome showed a substantial improvement in shortening the time between onset of symptoms and genetic diagnosis. Regarding treatment, 49% of all patients received immunoglobulin G (IgG) substitution (70%-subcutaneous; 29%-intravenous; 1%-unknown). Three-hundred patients underwent at least one hematopoietic stem cell transplantation (HSCT). Five patients had gene therapy. Conclusion: The German PID-NET registry is a precious tool for physicians, researchers, the pharmaceutical industry, politicians, and ultimately the patients, for whom the outcomes will eventually lead to a more timely diagnosis and better treatment.

Keywords: CVID; European Society for Immunodeficiencies (ESID); German PID-NET registry; IgG substitution therapy; PID prevalence; primary immunodeficiency (PID); registry for primary immunodeficiency.

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Figures

Figure 1
Figure 1
Registration progress since start of PID-NET registry.
Figure 2
Figure 2
Registered PID-distribution in Germany, July 2017. The size of the circles is proportional to the numbers of patients. In one city there can be one or multiple centres participating in registering patient data. The base map was adapted with the permission of d-maps.com (https://d-maps.com).
Figure 3
Figure 3
Main categories of PID based on the IUIS classification of 2,453 patients.
Figure 4
Figure 4
Age and gender distribution of 2,239 living PID patients at “date of last news”. (A) Living patients with date of last news, (B) Living patients without HSCT or gene therapy, (C) Living patients with HSCT.
Figure 5
Figure 5
Onset of presenting symptoms.
Figure 6
Figure 6
Diagnostic delay: (A) diagnostic delay of 527 CVID patients, (B) diagnostic delay of 89 CGD patients, (C) diagnostic delay of 87 agammaglobulinemia patients, (D) diagnostic delay of 40 SCID patients.
Figure 7
Figure 7
IgG substitution. (A) IgG substitution delay for 1,115 patients who received IgG replacement in the range of 3 years before PID diagnosis and 12 years afterwards. (B) Absolute IgG dose per month [g] of 822 patients ≥18 years of age. (C) Relative IgG dose (mg per kg body weight) for 1,062 patients.
Figure 8
Figure 8
IgG substitution and side effects. (A) Side effects in 128 patients (11%) [(iv, 32 patients (25%); sc, 96 patients (75%)] out of 1,140 patients with IgG substitution, included 39 patients [(iv, 13 patients (33%); sc, 26 patients (76%)] with “other side effects.” (B) Relative IgG dose and side effects (120 patients with side effects out of 1,061 patients). (C) Relative IgG dose and side effects in percent (120 patients with side effects out of 1,061 patients).
Figure 9
Figure 9
326 HSCTs performed between 1989 and 2016 for 294 patients.

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