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Genetic control of naive T cell receptor gene usage in celiac disease

We have characterized the TCR repertoire of naïve CD4+ T cells in 103 individuals with CeD and 103 control subjects by undertaking gene usage quantitative trait loci analyses based on repertoire sequencing and single nucleotide polymorphism genotyping. Variants within the TCR alpha and beta loci and HLA region as well as HLA-DQ allotypes and alleles were tested for association with TCR gene usage.

Type: RNASeq
Archiver: Federated EGA Norway

4 Datasets

Click on a Dataset ID in the table below to learn more, and to find out who to contact about access to these data

Dataset ID	Description	Technology	Samples
EGAD50000002726	This dataset contains gene usage matrices calculated from the processed productively rearranged bulk TCR sequences from peripheral blood CD4+ T cells from 103 subjects with celiac disease and 103 control donors. The files contain per sample V, D and J gene usage frequencies for TRA and TRB sequences. Unique rearrangements were quantified with Alakazam in gene mode. More details about processing steps are found in the linked publication. The dataset also contains an accompanying metadata file (csv).	Illumina NovaSeq 6000	206
EGAD50000002728	This dataset contains genotype information (vcf files) for genotyped SNPs within or near (within 1 million bases) the HLA and TCR (TRA and TRB) loci of 187 individuals (98 controls and 89 subjects with coeliac disease). SNPs were genotyped using an Axiom Human Genotyping SARS-CoV-2 Research Array (Thermo Fisher) and the data was processed with the Axiom Analysis Suite using the “Best Practices Workflow” pipeline. The genotyped SNPs include 6791 SNPs within/near the HLA region on Chr6, 685 SNPs within/near TRA on Chr14, and 262 SNPs within/near TRB on Chr7 passing quality control. The dataset also contains a metadata file (csv) describing sample phenotypes and providing links to genotype sample names.		206
EGAD50000002731	This dataset contains processed productively and non-productively rearranged TCR sequences (tsv file format) from bulk AIRR-seq of naive peripheral blood CD4+ T cells from 103 subjects with celiac disease and 103 control donors. Raw sequences have been processed with presto and Change-O as detailed in the linked publication in order to filter by quality, create consensus sequences and collapse identical rearrangements, and analysed with IgBlast. The dataset also contains an accompanying metadata file (csv).	Illumina MiSeq Illumina NovaSeq 6000	206
EGAD50000002733	This dataset contains raw bulk adaptive immune receptor repertoire sequencing (AIRR-seq) data targeting the T cell receptor alpha (TRA) and beta (TRB) chains in peripheral blood naïve CD4+ T cells. The dataset contains raw demultiplexed fastq files from a total of 103 subjects with celiac disease and 103 controls, split into 8 sequencing libraries. The dataset also contains an accompanying metadata file (csv). Peripheral blood mononuclear cells were obtained from study participants, and naïve CD4+ T cells were FACS-sorted for RNA extraction and library preparation. Libraries were generated using a 5' RACE strategy incorporating unique molecular identifiers, combined with a semi-nested PCR approach to capture full V(D)J information and reduce amplification bias. Separate TRA and TRB libraries from each individual were constructed using unique dual indexes, and pooled before sequencing. Pooled libraries were sequenced on an Illumina NovaSeq 6000 platform using 250 bp paired-end reads. Raw paired-end FASTQ files were demultiplexed with the pRESTO tool suite.	Illumina NovaSeq 6000	206