K-Lab: T cells and the thymus in IEI

Our lab focuses on the development, maturation, differentiation, phenotype and function of T cells, with particular focus on patients with inborn errors of immunity (IEI) affecting the thymus. We enjoy working with high-parametric and spectral flow cytometry, bulk and single cell RNA sequencing. We utilize modern bioinformatics to analyse large datasets and extract information from clinical data.


Members

Assoc. Prof. Adam Klocperk, MD, PhD

klocperk principal investigator, group leader, consultant

Prof. Anna Sediva, MD, PhD

sediva honorary investigator, senior consultant

Ondrej Vladyka, MD

vladyka MD-PhD student, focus on congenital and acquired defects of thymic development and function, high-parametric and -omics data analysis

Martin Orlicky, MD

orlicky PhD student, focus on congenital defects of thymic development and function and DNA repair syndromes, in vitro functional analyses

Irena Zentsova

zentsova staff scientist, innate immunity and dendritic cells

Katarina Simonová

simonova undergraduate student, focus on 22q11.2 deletion syndrome, clinical phenotype integration, complex care coordination

Collaborations

2lf hpo charite ccp gosh umg uzh
AI in education HPO ontology IEI annotation ataxia telangiectasia,

ASO therapy
thymus transplants T cells,

thymus, DNA repair
neonatal SCID screening,

IGLL1 def.

Publications

2025

(submitted) Grombirikova, Journal of Immunology Research: Atypical phenotype of predominant autoimmune cytopenia and impaired perforin expression in XMEN syndrome

(submitted) Danis, Nature Biotechnology: GA4GH Phenopacket-Driven Characterization of Genotype-Phenotype Correlations in Mendelian Disorders

Bloomfield, Pediatric Allergy and Immunology: Beyond TREC: Pivotal Role of Tandem TREC/KREC Assay in Czech SCID NBS Pilot Programme

Golwala, Clinical Immunology: Ex vivo T-lymphopoiesis assays assisting corrective treatment choice for genetically undefined T-lymphocytopaenia

2024

Klocperk, Alergie: Neonatal screening of severe combined immunodeficiency (SCID) in the Czech Republic

Zentsova, Clinical Immunology: Tumor-necrosis factor α-rich environment alters type-I interferon response to viral stimuli in patients with juvenile idiopathic arthritis by altering myeloid dendritic cell phenotype

Bloomfield, Česko-slovenská pediatrie: The expansion of national newborn screening marks an advancement in diagnosing patients with severe inborn errors of immunity

Danis, HGG Advances: A corpus of GA4GH phenopackets: case-level phenotyping for genomic diagnostics and discovery

Marchal, HGG Advances: Lack of association between classical HLA genes and asymptomatic SARS-CoV-2 infection

Kreins, Journal of Allergy and Clinical Immunology: European Society of Immunodeficiencies guidelines for the management of patients with congenital athymia

Howley, Journal of Allergy and Clinical Immunology: Impact of newborn screening for SCID on the management of congenital athymia

Soomann, Journal of Allergy and Clinical Immunology: Variants in IGLL1 cause a broad phenotype from agammaglobulinemia to transient hypogammaglobulinemia

Vladyka, Journal of Clinical Immunology: Profound T Lymphocyte and DNA Repair Defect Characterizes Schimke Immuno-Osseous Dysplasia

Klocperk, Pediatric Allergy and Immunology: Resolution of granulomatous lesions in a Nijmegen breakage syndrome patient with severe immunodeficiency after hematopoietic stem cell transplantation

2023

Vladyka, Clinical Immunology: Th1/interferon-γ bias in 22q11.2 deletion syndrome is driven by memory T cells and exacerbated by IL-7

Parackova, Frontiers in Immunology: Expanded population of low-density neutrophils in juvenile idiopathic arthritis

Matuozzo, Genome Medicine: Rare predicted loss-of-function variants of type I IFN immunity genes are associated with life-threatening COVID-19

Bronsky, Journal of Pediatric Gastroenterology and Nutrition: Postvaccination Immunogenicity of BNT162b2 SARS-CoV-2 Vaccine and Its Predictors in Pediatric Inflammatory Bowel Disease

Klocperk, Molecular and Cellular Pediatrics: B cell phenotype and serum levels of interferons, BAFF, and APRIL in multisystem inflammatory syndrome in children associated with COVID-19 (MIS-C)

Lee, Science: Inborn errors of OAS-RNase L in SARS-CoV-2-related multisystem inflammatory syndrome in children

Bartunkova, Vnitrni lekarstvi: News in immunology


Grants and funding

(Under evaluation) AZV NW26-05-00027: DART: Differentiation patterns, clinical Associations and Rejuvenation of T-cell Immunity in Primary ImmunoDeficiencies

JMF 22q ANTIC: 22q11.2 Deletion Syndrome - Assessing patient Needs and Trajectories in Czechia

AZV NU23-05-00097: ThymIA: Thymic dysfunction and its role in Innate and Adaptive immunity

AZV NU20-05-00282: T-MAPs: High content mapping of surface molecules in normal and disturbed development T lymphocytes, a search for diagnostic and therapeutic targets


Awards

Minister of Health Honorary Award 2024

cenaministra2024

Awarded to prof. Kalina and assoc. prof. Klocperk for the project AZV NU20-05-00282 T-MAPs: High content mapping of surface molecules in normal and disturbed development T lymphocytes, a search for diagnostic and therapeutic targets

Czech society for analytical cytometry award 2024

ondracena

Awarded to Dr. Vladyka in the category of best publication with the topic of clinical cytometry for the paper Vladyka et al. Th1/interferon-γ bias in 22q11.2 deletion syndrome is driven by memory T cells and exacerbated by IL-7

V. Špičák award 2024

spicakcena

Awarded to Assoc. Prof. Klocperk in the category of best publication in the Alergie journal for the paper Klocperk et al. Neonatal screening of severe combined immunodeficiency (SCID) in the Czech Republic

Created: 12. 5. 2025 / Modified: 13. 5. 2025 / Responsible person: MUDr. Adam Klocperk, Ph.D.