AI Article Synopsis

  • * A significant finding was that 80% of patients had at least one mutation, including several mutations that had not been previously reported in myeloma cases.
  • * The research highlights the importance of sequencing in identifying high-risk patients, suggesting that many clinically relevant genomic insights remain to be uncovered, which could enhance our understanding of the disease.

Article Abstract

Aims: Multiple myeloma is a genomically complex haematological malignancy with many genomic alterations recognised as important in diagnosis, prognosis and therapeutic decision making. Here, we provide a summary of genomic findings identified through routine diagnostic next-generation sequencing at our centre.

Methods: A cohort of 86 patients with multiple myeloma underwent diagnostic sequencing using a custom hybridisation-based panel targeting 104 genes. Sequence variants, genome-wide copy number changes and structural rearrangements were detected using an inhouse-developed bioinformatics pipeline.

Results: At least one mutation was found in 69 (80%) patients. Frequently mutated genes included (36%), (22.1%), (15.1%), (8.1%) and (5.8%), including multiple mutations not previously described in myeloma. Importantly we observed mutations in the absence of a 17 p deletion in 8% of the cohort, highlighting the need for sequencing-based assessment in addition to cytogenetics to identify these high-risk patients. Multiple novel copy number changes and immunoglobulin heavy chain translocations are also discussed.

Conclusions: Our results demonstrate that many clinically relevant genomic findings remain in multiple myeloma which have not yet been identified through large-scale sequencing efforts, and provide important mechanistic insights into plasma cell pathobiology.

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Source
http://dx.doi.org/10.1136/jclinpath-2018-205195DOI Listing

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