243 results for "study_type:"exome sequencing" AND repository:ega"

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• NOUS-209 off-the-shelf immunotherapy has the potential to hit primary and metachronous colorectal and urothelial cancer in Lynch syndrome

  Lynch syndrome is an inherited cancer predisposition characterized by the development of microsatellite-instable tumors, most commonly colorectal and urothelial cancers. These cancers harbor recurrent frameshift mutations (FSMs) that generate shared neoantigens, creating opportunities for targeted immunotherapy. NOUS-209 is a viral-vector–based cancer vaccine encoding 209 of these shared neoantigen peptides. This study investigated the presence and evolution of NOUS-209 target FSMs in Lynch syndrome–associated tumors, revealing their persistence across primary and metachronous cancers and supporting the rationale for NOUS-209 as a preventive immunotherapy.

  Study EGAS50000001336

• Osteosarcoma 3D patient derived cultures to test genome-informed personalized treatment options; a feasibility study

  Background: Improving osteosarcoma treatment beyond conventional (neo)adjuvant chemotherapy and resection remains challenging. An urgent need for novel therapeutic options, particularly personalized and targeted approaches, has emerged due to high inter-patient molecular heterogeneity. A lack of representative in vitro and in vivo models impedes therapeutic development, therefore we aimed to create 3D in vitro long term culture models directly from patient material. Methods: Tumour cells from seven osteosarcoma patients were propagated in monolayer or collagen hydrogels, while whole-exome sequencing of corresponding primary tumour tissue was performed to identify potential drug targets. Established cultures were subsequently used to assess efficacy of the identified personalized treatment options. Results: Three out of seven hydrogel cultures harboured the same genetic alterations as the corresponding primary tumours. Among these, the L6565 patient line exhibited homozygous CDKN2A loss with retained Rb expression, rendering tumour cells sensitive to CDK4/CDK6 inhibition via palbociclib. This patient line was used to evaluate genome-informed therapy and to compare cell culture models of increasing complexity. Our findings demonstrate feasibility of establishing long-term patient-derived osteosarcoma cultures with a success rate of 14%. Tumour heterogeneity was reflected in advanced culture methods producing more variability in treatment response. Conclusion: These results highlight the potential of genome-informed therapies in osteosarcoma and the importance of refining culture techniques to enhance translational research and therapeutic outcomes.

  Study EGAS50000001583

• Whole-exome variant calling of individuals from the study of sepsis and acute distress respiratory syndrome in Spain

  Research study of genetic susceptibility in sepsis and acute distress respiratory syndrome (ARDS). ARDS is a lethal condition, often derived from sepsis, lacking effective targeted treatments. Growing evidence indicates that the genetic component significantly influences susceptibility and severity of ARDS. We used whole-exome sequencing data in case-control studies to characterize genetic factors associated with an increase of ARDS risk.

  Study EGAS50000001119

• Multi-region sequencing of PDAC patients

  Study EGAS00001007379

• Whole exome sequencing of soft tissue sarcoma

  We characterized genomic alterations of soft tissue sarcoma.

  Study EGAS50000001673

• Granzyme B-expressing regulatory B cells share the same origin as conventional blood B cells

  This study investigates the origin and characteristics of granzyme B-expressing regulatory B cells (GZMB⁺ Bregs), a subset implicated in immune regulation and graft tolerance following kidney transplantation. We analyzed the B cell receptor (BCR) repertoire of sorted GZMB⁺ and GZMB⁻ B cells from two healthy donors (Healthy Volunteers, HVs) and two drug-free tolerant kidney transplant recipients (TOLs).

  Study EGAS50000001707

• Whole exome sequencing of the dMMR colorectal cancer cohort

  We leveraged the ImmunoID NeXT platform, an Immune-enhanced multiomics platform to profile a cohort of patients with dMMR CRC. This sub-study includes the whole exome sequencing data

  Study EGAS50000001744

• Whole exome sequencing of ATCWGS42 primary tumour and PDX

  Genomic DNA was isolated from snap-frozen tissue and subjected to whole genome sequencing at The Center for Applied Genomics (Hospital for Sick Children, Toronto, ON) or at Beijing Genomic Institute (BGI). High-coverage whole exome-sequencing was performed at GeneSeeq Inc. (Toronto, Ontario, Canada) using IDT xGen exome panel.

  Study EGAS50000001490

• Recurrent/Metastatic Adenoid Cystic Carcinoma Treated with Axitinib and Avelumab

  Data from patients with adenoid cystic carcinoma treated with combination of VEGFR inhibitor axitinib and anti-PD-L1 avelumab. Eligible patients had R/M ACC with progression within 6 months before enrollment. The primary end point was objective response rate (ORR) per RECIST 1.1; secondary end points included progression-free survival (PFS), overall survival (OS), and toxicity. The study reached its primary end point with ≥4 PRs in 28 evaluable patients (confirmed ORR of 18%).

  Study EGAS50000001714

• Multimodal analysis of rare BARD1 missense variant

  This project analyzes whole-exome sequencing data from a patient with breast cancer recurrence and endometrial cancer, as well as from the patient’s father’s colon tumor, all harboring a rare germline BARD1 missense variant (p.Gly753Val). The data reveal loss of heterozygosity and homologous recombination deficiency specific to the triple-negative breast cancer recurrence, supporting the variant’s conditional pathogenicity linked to prior treatment.

  Study EGAS50000001682