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@ARTICLE{Graafen:285629,
author = {Graafen, Lea and Borkhardt, Arndt and Reiß, Julian and
Soura, Stavrieta and Laws, Hans-Jürgen and Uhrberg, Markus
and Paulusch, Stefan and De Domenico, Elena and Beyer, Marc
D and Bennstein, Sabrina B and Ghosh, Sujal},
title = {{FOXN}1 immunodeficiency detected by {TREC}-based newborn
screening - {A} challenge of management?},
journal = {Immunology letters},
volume = {279},
issn = {0165-2478},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {DZNE-2026-00268},
pages = {107142},
year = {2026},
abstract = {Incomplete genotype-phenotype correlations challenge the
management of non-SCID FOXN1 immunodeficiency. We describe
the detailed clinical course of three distinct newborns with
four novel FOXN1 mutations identified by TRECNBS. For
comprehensive immune characterization advanced flow
cytometry-based immunophenotyping was employed alongside
high-resolution single-cell RNA sequencing. In our cohort,
we detected heterozygous FOXN1 mutations in P1 (c.1178delG;
p.Gly393Alafs*157) and P2 (c.830+1G>T; p.?), and compound
heterozygous FOXN1-mutations in P3 (c.1318C>T; p.Gln440* and
c.668T>G; p.?). Despite slow and partial recovery from
T-cell lymphocytopenia in P3, clinical signs for classical
'nude SCID` were incomplete. Compared to a healthy cord
blood control, a distinct B-cell population was identified
in the FOXN1-deficient patients expressing immature B-cell
markers and lower HLA-II mRNA levels. In summary, our cohort
of three newborns with four novel FOXN1 variants highlights
heterogeneous immunological courses and broader thymic
dysfunction implications in this rare disease. Structured
management strategies are essential for those identified by
NBS-programs.},
keywords = {Humans / Infant, Newborn / Disease Management / Forkhead
Transcription Factors: genetics / Forkhead Transcription
Factors: deficiency / Genetic Association Studies /
Immunologic Deficiency Syndromes: diagnosis / Immunologic
Deficiency Syndromes: genetics / Immunophenotyping /
Mutation / Neonatal Screening: methods / Severe Combined
Immunodeficiency: diagnosis / Severe Combined
Immunodeficiency: genetics / T-Lymphocytes: immunology /
FOXN1 (Other) / Nude SCID (Other) / SCID (Other) / TREC-NBS
(Other) / Thymic deficiency (Other) / scRNA-seq (Other) /
Forkhead Transcription Factors (NLM Chemicals) / Whn protein
(NLM Chemicals)},
cin = {AG Schultze / AG Beyer / PRECISE},
ddc = {610},
cid = {I:(DE-2719)1013038 / I:(DE-2719)1013035 /
I:(DE-2719)1013031},
pnm = {354 - Disease Prevention and Healthy Aging (POF4-354) / 351
- Brain Function (POF4-351) / 352 - Disease Mechanisms
(POF4-352)},
pid = {G:(DE-HGF)POF4-354 / G:(DE-HGF)POF4-351 /
G:(DE-HGF)POF4-352},
experiment = {EXP:(DE-2719)PRECISE-20190321},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:41610918},
doi = {10.1016/j.imlet.2026.107142},
url = {https://pub.dzne.de/record/285629},
}