Genetic Study of Immunodeficiency: Search for New Genetic Causes for Primary Immunodeficiencies

Обзор

Individuals with suspected primary immunodeficiency will be studied and the results compared with healthy controls. Primary immunodeficiency may manifest as recurrent, severe or unusual infections as well as signs and symptoms of immune dysregulation such as autoimmunity or lymphoproliferation.

Подробное описание

Patients with a suspected immunodeficiency will be identified and invited to participate. Upon agreement, an additional blood sample will be collected when they have their routine bloods taken. If the study participants undergoes anaesthesia for any other reason, a small skin biopsy will be taken as well. Additional samples including blood samples or mouth swabs will be taken from healthy family members. Blood from healthy controls will only be taken when there is a clinical need for blood sampling (or when the study participant is already anaesthetised for any other reason) and not for research purposes only.

Вмешательства

• Процедура Skin Biopsy
  A punch biopsy of the skin and underlying connective tissue is performed to establish fibroblast cultures. For pediatric patients, the procedure is conducted while the patient is under general anesthesia for other clinical indications. For adult patients, the biopsy is performed under local anesthesia as needed. This intervention follows cosmetic/aesthetic considerations and is therefore typically collected from the inner aspect of the upper arm.
• Процедура Mouth Swab or Saliva Collection
  Non-invasive collection of epithelial cells via a swab of the buccal mucosa (inner cheek) to obtain biological material for comparative genetic analysis with minimal burden.
• Процедура Blood Sampling
  Collection of nucleated blood cells, serum, and plasma from blood and subsequent genetic testing, functional assays, as well as antibody and cytokine measurements. To minimize risk and burden, blood sampling in pediatric patients is opportunistic (performed during routine clinical diagnostics or while under anesthesia) and capped at 1% of total blood volume per sampling and 3% over a 4-week period (adjusted by body weight). In adult patients, up to 50mL venous blood is sampled, typically perform

Первичные конечные точки

• Number of patients with suspected PID for whom a genetic cause has been identified [Срок оценки: Through study completion, an average of 3 years]

Критерии участия

Критерии включения

• Patients: Pediatric patients (in/outpatient or referred) with suspected or confirmed Inborn Errors of Immunity.
• Relatives: Healthy or affected biological relatives of enrolled patients.
• Controls: Healthy volunteers with no history of chronic immunological, inflammatory, or infectious disease.
• Consent: Ability to provide signed informed consent (or guardian consent).

Критерии приведены из реестра в оригинале (на английском). Окончательную оценку соответствия проводит исследовательский центр.

Здоровые добровольцы: Да

Дизайн исследования

Модель наблюдения

Только случаи

Центры проведения

Швейцария · 1 центр

• Division of Immunology — Zurich

Публикации

• Mozun R, Belle FN, Agostini A, Baumgartner MR, Fellay J, Forrest CB, Froese DS, Giannoni E, Goetze S, Hofmann K, Latzin P, Lauener R, Martin Necker A, Ormond K, Pachlopnik Schmid J, Pedrioli PGA, Posfay-Barbe KM, Rauch A, M Schulzke S, Stocker M, Spycher BD, Vayena E, Welzel T, Zamboni N, Vogt JE, Schlapbach LJ, Bielicki JA, Kuehni CE; SwissPedHealth consortium. Paediatric Personalized Research Ne PMID 39725440
• Lewandowska DW, Capaul R, Prader S, Zagordi O, Geissberger FD, Kugler M, Knorr M, Berger C, Gungor T, Reichenbach J, Shah C, Boni J, Zbinden A, Trkola A, Pachlopnik Schmid J, Huber M. Persistent mammalian orthoreovirus, coxsackievirus and adenovirus co-infection in a child with a primary immunodeficiency detected by metagenomic sequencing: a case report. BMC Infect Dis. 2018 Jan 11;18(1):33. doi: PMID 29325543
• Simonis A, Fux M, Nair G, Mueller NJ, Haralambieva E, Pabst T, Pachlopnik Schmid J, Schmidt A, Schanz U, Manz MG, Muller AMS. Allogeneic hematopoietic cell transplantation in patients with GATA2 deficiency-a case report and comprehensive review of the literature. Ann Hematol. 2018 Oct;97(10):1961-1973. doi: 10.1007/s00277-018-3388-4. Epub 2018 Jun 13. PMID 29947977
• Mauracher AA, Gujer E, Bachmann LM, Gusewell S, Pachlopnik Schmid J. Patterns of Immune Dysregulation in Primary Immunodeficiencies: A Systematic Review. J Allergy Clin Immunol Pract. 2021 Feb;9(2):792-802.e10. doi: 10.1016/j.jaip.2020.10.057. Epub 2020 Nov 11. PMID 33186766
• Truck J, Prader S, Natalucci G, Hagmann C, Brotschi B, Kelly J, Bassler D, Steindl K, Rauch A, Baumgartner M, Fingerhut R, Hauri-Hohl M, Gungor T, Pachlopnik Schmid J, Berger C, Reichenbach J. Swiss newborn screening for severe T and B cell deficiency with a combined TREC/KREC assay - management recommendations. Swiss Med Wkly. 2020 Jun 24;150:w20254. doi: 10.4414/smw.2020.20254. eCollection 2020 PMID 32579701
• Mauracher AA, Pagliarulo F, Faes L, Vavassori S, Gungor T, Bachmann LM, Pachlopnik Schmid J. Causes of low neonatal T-cell receptor excision circles: A systematic review. J Allergy Clin Immunol Pract. 2017 Sep-Oct;5(5):1457-1460.e22. doi: 10.1016/j.jaip.2017.02.009. Epub 2017 Mar 27. No abstract available. PMID 28359806
• Lemoine R, Pachlopnik-Schmid J, Farin HF, Bigorgne A, Debre M, Sepulveda F, Heritier S, Lemale J, Talbotec C, Rieux-Laucat F, Ruemmele F, Morali A, Cathebras P, Nitschke P, Bole-Feysot C, Blanche S, Brousse N, Picard C, Clevers H, Fischer A, de Saint Basile G. Immune deficiency-related enteropathy-lymphocytopenia-alopecia syndrome results from tetratricopeptide repeat domain 7A deficiency. J Aller PMID 25174867
• Pachlopnik Schmid J, Gungor T, Seger R. Modern management of primary T-cell immunodeficiencies. Pediatr Allergy Immunol. 2014 Jun;25(4):300-13. doi: 10.1111/pai.12179. Epub 2014 Jan 3. PMID 24383740

Идентификаторы

NCT: NCT02735824 · GSI KEK_2015-0555

Первоисточники (государственные реестры)

• ClinicalTrials.gov (NIH, США)

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