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Download Cancer Genomics Case Studies CANCER RESEARCH Starting at HEME MALIGNANCIES AND $450 SOLID TUMOR RESEARCH per genome Cancer samples are just too complex for low coverage Bionano Genome Imaging uncovers large structural whole genome sequencing. Complex rearrangements variations beyond what short and long read as well as unsequenceable regions of the genome sequencing can see. present an additional challenge for short and long read Bionano Genome Imaging directly visualizes patterns of sequencing technologies. labels on megabase-size intact DNA molecules, at up to 1600X coverage, to detect structural variations. Every type Bionano Genome Imaging detects unbiased of structural variant is detected with sensitivities as high as structural variations at sensitives much higher than 99%, and with positive predictive value of more than 97%. sequencing based technologies, and down to It can detect balanced translocations, repeat expansions, 1% variant allele fraction. events flanked by repeats, and even rearrangements of large segmental duplications. Unlike sequencing based methods, that Extreme genomic rearrangements are hallmarks of cancer are typically unable to detect insertions or identify where the manifestation. Deciphering such complex genomic structures extra sequence is inserted, Bionano detects both deletions and requires a combination of short read sequencing as well as long insertions starting at 500 bp with high sensitivity. And because range information with high coverage to unlock the heterogeneity it uses a single molecule imaging technology, mosaic variants while providing a complete picture of the genome. To date, NGS down to as little as 1% variant allele fraction can be detected applications in the clinic are limited to either low coverage across as well. the whole genome, or high coverage exome sequencing that disregards 98% of the genome. The repetitive nature of the genome The workflow is simple and starts with mega-base size DNA makes two thirds largely inaccessible by short-read sequencing, isolation from blood, cells, tissue or tumor biopsies. A single and the short reads make elucidating the complex rearrangements enzymatic reaction places 500,000 fluorescent labels all seen in cancer impossible. The throughput of current long-read throughout the genome at a specific sequence motif occurring sequencing technologies is too limited to be realistically applied approximately 15 times per 100 kbp in the human genome. to cancer diagnostics or discovery, and these technologies remain The long, labeled DNA molecules are linearized in nanochannel expensive which is an impediment to getting a true complete view arrays on a Saphyr chip® and imaged in an extremely high of the rearranged genome. throughput, automated manner by the Saphyr® Instrument. Changes in patterning or spacing of the labels are detected automatically, genome wide, to call all structural variants. Variant allele Coverage per fraction 1600X sample 1% detection bionanogenomics.com/cancer BIONANO CONSOLIDATES KARYOTYPING, FISH AND aCGH IN A SINGLE AUTOMATED ASSAY THAT CAN BE ANALYZED WITH JUST A FEW CLICKS Identification of complex rearrangements in cancer often requires to validate t(1;2). Suspicion of a previously missed t(5;14) called a combination of approaches and are typically performed for a FISH analysis. Results from karyotyping and FISH were sequentially. This sequential approach manages costs but inconclusive since the acceptor chromosome couldn’t be clearly increases the turn-around time and complicates understanding identified. The two events were captured by Bionano in a single the genetic makeup of the sample. A leukemia sample presented experiment and benign structural variants were automatically a challenging karyogram, necessitating aCGH as a complement filtered out without complex pipelines.1 Challenging Leukemia Sample Current Methods Bionano Genome Imaging Figure A-2 Figure A-1 3 di erent platforms required to identify all events Consolidates 3 Into 1 convenient assay with all events identified Karyotyping FISH aCGH 4 1 1 2 5 FISH needed to Challenging confirm t(5;14) karyogram necessitated cCGH to validate t(1;2) t(5;14) t(1;2) BIONANO IDENTIFIES VARIANTS IN, AND AROUND GENES IMPLICATED IN CANCER, THAT ARE MISSED BY SHORT AND LONG READ SEQUENCING Because they are too long: Because they are too rare: A case of familial cancer known to be linked to a particular gene The study of complex rearrangements in heterogenous cancer was studied for a decade without any molecular evidence of samples with long read sequencing is done at the expense events perturbing that gene. Bionano identified a 38kb cassette of coverage, throughput or cost. Reaching low allelic fraction that was amplified in 6 tandem copies just upstream of this necessary to identify SV in biopsies requires deeper coverage gene. Saphyr imaged single molecules spanning all 230 kbp of than long read sequencing can offer for a reasonable price. By this tandem repeat which allowed it to be observed directly, as providing up to 1600X coverage for a human sample, Bionano can opposed to inferred algorithmically as is the case with other automatically detect variants present in as little as 1% allele fraction. molecular methods.2 Because they are inaccessible by sequencing: In a patient derived model of uveal melanoma, no mutation or epigenetic event was found explaining the loss of expression of gene 1 using NGS, which is typically associated with this cancer. CONTROL Bionano identified a 740 bp deletion in the promoter of gene 1. Gene This region was missed by sequencing due to the high GC Bionano Map content of that region.3 Ref Hg19 Bionano Map Gene 1 Gene 2 Ref Chr 3 PATIENT Gene 740bp deletion Bionano Map Bionano Map Ref Hg19 100 Bionano Map % GC Content 50 0 For Research Use Only. Not for use in diagnostic procedures. BIONANO IDENTIFIES MUTATION SIGNATURES AND BRINGS ORDER, WITHOUT COMPLEX PIPELINES In highly rearranged cancer samples: Cancer samples often display a high number of structural cancer cell line, a consensus map resulting from the alignment variants and the limitations of the short read length of NGS are of dozens of molecules spanning the region allowed Bionano particularly detrimental for making sense of complex successions to identify a succession of a translocation, deletions and an of event, such as in chromothripsis. In this patient-derived breast inversion missed by short-read and long read-sequencing. Ref Chr 7 67.8 M 67.9 M 68 M 68.1 M 68.2 M 68.3 M 68.4 M 68.5 M 68.6 M 68.7 M 68.8 M 68.9 M 69 M 69.1 M 69.2 M 69.3 M 69.4 M 69.5 M 69.6 M 69.7 M 69.8 M 69.9 M 70 M Ref Chr 10 B C D A: t(7;10) A: translocation t(7;10) B: 1.61 Mbp deletion C: 210.1 kbp inversion Bionano Map D: 399.9 kbp deletion Complex Rearrangement In samples where stratification is needed: The ability to stratify patient samples based on mutational signature. The circos plot on the right in the image below shows profile usually requires extensive bioinformatic data curation replication stress resulting from a Hepatitis B virus insertion 9 kb downstream of sequencing. In a hepatocellular carcinoma study, upstream of the Cyclin E gene. Patients could be stratified based our built-in pipeline automatically provides enough information on the accumulation of DNA damage to determine if they are to distinguish samples with or without a replication stress candidates for novel innovative therapies such as PARP inhibitors.4 4 24 2 1 1 3 23 2 2 2 2 CCNE 1 2 1 21 2 2 2 0 0 2 2 Cytoband 9 9 Ref Chr 19 1 1 Insertion 3 Deletion 8 3 8 1 1 Inversion SV track with Duplication 7 7 1 1 Translocation 7.3 kbp HBV 6 4 6 4 insertion 1 1 Copy number profile 5 5 1 1 Bionano Map Translocations 5 5 4 4 1 1 3 3 1 1 6 6 2 2 1 1 7 7 1 1 1 1 8 8 0 0 1 1 9 9 No replication stress Replication stress BIONANO IS A STREAMLINED TOOL FOR PERSONALIZED MEDICINE Because it automatically identifies classical actionable fusions: Rapid identification of BCR-ABL1 translocations in Acute Lymphoblastic Leukemia is urgent to leverage potential therapeutic options. Imatinib is a specific inhibitor of the fusion protein resulting from that translocation and identification of eligible patients is the cornerstone of personalized medicine in leukemia. With a unique workflow, Bionano Genome Imaging easily identifies complex and rare events such as this 3-way translocation of the Philadelphia chromosome t(9;22)(q34;q11).5 Because it identifies new fusions never discovered before: In a study conducted on 48 leukemia samples, Bionano identified 2178 rare structural variants of which 95 were rare interchromosomal translocations and 23 were unique calls containing potential gene fusions, leading to new avenues of research for drug development.5 For Research Use Only. Not for use in diagnostic procedures. Because it easily identifies rare/new fusions of Because the ultrasensitive, automatic, genome wide known genes: detection of rearrangements brings safety in CAR-T In a large systematic comparative study between Bionano and cells manufacturing: classical cytogenetics, Bionano identified novel, non-recurrent CAR-T cells are a powerful new therapeutic tool, but these fusions never reported before. In both cases shown here, one of engineered immune cells are often poorly characterized or remain the two fusion partners is well known in leukemia from other gene unchecked for unwanted alterations. Bionano can rapidly collect fusions. These events were missed by classical cytogenetics either several thousand folds of coverage of a human genome at a low because of their low allelic frequencies or because of the targeted cost, allowing for the detection of undesired rearrangements. 5 FISH approach classically used in a diagnostics context.
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