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Spots Global Cancer Trial Database for Non-invasive Tumor Immunoglobulin Gene Next Generation Sequencing (IgNGS) in Diffuse Large B Cell Lymphoma (DLBCL)

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Trial Identification

Brief Title: Non-invasive Tumor Immunoglobulin Gene Next Generation Sequencing (IgNGS) in Diffuse Large B Cell Lymphoma (DLBCL)

Official Title: Non-invasive Tumor Immunoglobulin Gene Next Generation Sequencing (IgNGS) in Diffuse Large B Cell Lymphoma (DLBCL): Prognostic Implications and Assessment of Tumor Response

Study ID: NCT04237168

Study Description

Brief Summary: This study will evaluate IgNGS at different time points in newly diagnosed DLBCL patients homogeneously treated (RCHOP) to address its correlation with conventional techniques (i.e., positron emission tomography/computed tomography imaging (PET/CT) and outcome.

Detailed Description: In B-cell malignancies, every lymphocyte clone expresses a unique antigen receptor structure, therefore immunoglobulin gene rearrangements (the sequence of nucleotides at the V(D)J recombination site) serves as a specific marker for each clone. Methods of analysis have changed over time to improve the sensitivity and to allow its application in clinical settings. Diffuse Large B-cell lymphoma (DLBCL) displays molecular heterogeneity. In this context, IgNGS allows for detection of tumor clonotype from plasma (ctDNA) (Liquid Biopsy-LB) of DLBCL patients with high sensitivity and specificity. ctDNA can be tracked with this methodology in the vast majority (\>90%) of patients, in contrast to NGS-methods based on genotyping for specific DLBCL mutations, which have overall low frequency. Furthermore, most newly discovered neoantigens in lymphoma derive from immunoglobulin variable sequences, supporting the relevance of the analysis of this particular region in contrast to the use of specific B-cell mutations. Importantly, preliminary studies on clonotype detection by IgNGS at the end of treatment correlate with outcome (poorer progression-free survival) and the persistence or reemergence of the tumor clonotype by ctDNA studies may anticipate the clinical relapse. We propose to evaluate IgNGS at different time points in newly diagnosed DLBCL patients treated with RCHOP to address its correlation with conventional techniques (i.e., PET/CT imaging) and outcome.

Eligibility

Minimum Age:

Eligible Ages: CHILD, ADULT, OLDER_ADULT

Sex: ALL

Healthy Volunteers: No

Locations

Hospital de la Santa Creu i Sant Pau, Barcelona, , Spain

Contact Details

Name: Javier Briones

Affiliation: Fundació Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau

Role: PRINCIPAL_INVESTIGATOR

Useful links and downloads for this trial

Clinicaltrials.gov

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