Platform Approach to Cancer Discovery and Diagnostics … · 2018-09-28 · 10 Somatic...
Transcript of Platform Approach to Cancer Discovery and Diagnostics … · 2018-09-28 · 10 Somatic...
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© 2010 Illumina, Inc. All rights reserved.
Illumina, illuminaDx, Solexa, Making Sense Out of Life, Oligator, Sentrix, GoldenGate, GoldenGate Indexing, DASL, BeadArray, Array of Arrays, Infinium, BeadXpress, VeraCode, IntelliHyb, iSelect, CSPro, GenomeStudio, Genetic Energy, and HiSeq are
registered trademarks or trademarks of Illumina, Inc. All other brands and names contained herein are the property of their respective owners.
Platform Approach to
Cancer Discovery and
Diagnostics
Development
© 2009 Illumina, Inc. All rights reserved.
Illumina, illuminaDx, Solexa, Making Sense Out of Life, Oligator, Sentrix, GoldenGate, GoldenGate Indexing, DASL, BeadArray, Array of Arrays, Infinium, BeadXpress, VeraCode, IntelliHyb,
iSelect, CSPro, and GenomeStudio are registered trademarks or trademarks of Illumina, Inc. All other brands and names contained herein are the property of their respective owners.
Emily Winn-Deen, Ph.D.
Vice President
Diagnostics Product Development
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United States: 2000United States: 2025Male Female
Population (millions)
Why Focus on Cancer?
The Population is Aging
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Copyright ©2008 American Cancer Society
From Jemal, A. et al.
CA Cancer J Clin 2008;58:71-96.
Annual Age-adjusted Cancer Death Rates* Among Males for Selected Cancers, United States, 1930 to 2004
Cancer Continues to be a Major Health Issue
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Cancer Therapies Dominate the Biotech Pharma Pipeline
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79
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Sarcoma
Bladder
Cervical
Stomach
Liver
Head/Neck
Myeloma
Ovarian
Brain
Kidney
Cancer-Related Conditions
Pancreatic
Skin
Other Cancers
Lymphoma
ColoRectal
Breast
Prostate
Leukemia
Lung
Unspecified Cancers
Solid Tumors
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Transplantation
Growth Disorders
Eye Conditions
Skin Disorders
Genetic Disorders
Blood Disorders
Respiratory Disease
Digestive Disorders
Diabetes
Neurological Disease
Other
HIV
CVD
AutoImmune
Infectious Disease
Cancer
Solid Tumors Lead Cancer Therapies
Source: PhRMA: 2006 Medicines in Development Biotechnology
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Oncology DiscoveryInitial Targets
Source: WHO
Gastric
Colon/ rectum
Breast
Lung
Percentage of All Cancers
Pro
bab
ilit
y o
f C
ure
(%
)
100
0 6 8 10 12 14
0
10
20
30
40
50
60
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80
90
2 4
KidneyCervix/ Uteri
Melanoma
Bladder
Oral
NHL
Testis
Thyroid
Prostate
Esophagus
MyelomaLeukemia
Brain
Pancreas
Ovary
CNS
Nasopharynx
Liver
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Cancer Sequencing Workflow
Visualize in IGV
Sequence
& QC data
Receive
samples
Genotype for
tracking and QC
Call somatic
variants:- substitutions
- indels <100 bp
- SVs >100 bp
- CNVs
Check tracking
and QC
Annotate
variants
Cross-sample
comparison
Build
genome
(CASAVA)
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Correlate
within
pathways
Call somatic
variantsApply mutational
consequence scores
(optional)
Map mutated genes
to known (cancer)
pathways
Correlate across cancers
Mutated genes
in known
pathways
Disrupted
pathways
Bin by region
Correlate
across
cancers
Variants
with no
annotation
Mutated
regions in
common
Map variants to genes and
other genomic features
Somatic
variant lists
List of
mutated
features
Mutated
features in
common
Correlate
across cancers
List of
mutated
genes
Mutated genes
in common
Map mutated
genes to known
cancer genes
Correlate
across cancers
Mutated genes
known
in cancer
Known cancer
genes in
common
Mutated
pathway genes
in common
Disrputed
pathways in
common
Correlate
across
cancers
Oncology DiscoveryCancer Specific Analyses
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Melanoma: COLO-829
► Collaboration with Mike Stratton’s team at the Sanger Center (UK)
► Melanoma cell line COLO-829 and its matched normal (>30x depth)
► Male; metastatic tumour; prior to treatment
► BRAF, CDKN2A and PTEN mutations previously confirmed by exon
sequencing
► SKY karyotype indicates pseudotriploidy
Karyotype courtesy of Paul Edwards, University of Cambridge
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Variant Detection
► Run specifications
– 2 x 75 base runs, 15 Gb / run. 0.2, 1, 2 & 4 kb libraries
► Single base substitutions
– Paired reads aligned with ELAND (non-gapped)
– Requires Q100 per allele, e.g. 3 x Q33 bases or equivalent
► Small indels
– Split reads aligned individually or grouped (Pindel, BWA, Grouper)
– Minimum 3x depth
► Larger structural variants
– Anomalous read pairs from short and long insert libraries
– >3 S.D. (deletions) or >5 S.D. (insertions)
– Minimum 10 reads
► Copy number changes
– Read depth (BWA+) in 10 kb windows
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Somatic Substitutions in COLO-829
► Subtraction process– High stringency calibrated tumour calls (germline + somatic)
– Subtract if evidence of variant in normal; & dbSNP
► 33,345 somatic substitutions (gain of an allele) in total
– 1 per 100 kb
– 32,325 single base
– 510 double base (adjacent)
► 96.6% specificity
– 454/470 novel somatic calls confirmed by new PCR-capillary sequencing
– 16 may be artefacts of either method
► 88% (98%) sensitivity
– 42/48 previous somatic variants called automatically
– (98%) or 47/48 automatic + manual (five seen only manually as the evidence
was below automatic threshold)
– 1/48 disputed call
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Somatic Mutational Signature of UV Exposure
► 69.9% of all somatic substitutions are CT or GA
► 92% of somatic CT are in a YC pyrimidine dimer (vs. 53% by chance)
A
T
G
C
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Complex CNV in tumour on chromosome 3
Normal
Tumor
Tumour (40X)
Normal (30X)
4 genes in this region:
RARB, TOP2B, NGL1,KS
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Catalogue of COLO-829 Somatic Variants
33,345 Single base substitutions
– 286 coding
1018 small indels
– 14 coding
37 Structural rearrangements
– 34 intrachromosomal:
25 deletions
6 insertions
2 duplications
1 complex
– 3 interchromosomal
– 19 breakpoints in genes
198 changes in copy number
Ideograms / val indels / sn10M / cdsn / cn /loh / sv
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Oncology Discovery Ovarian Cancer
Deadly
Incurable
Difficult Dx
Patients present with a suspicious/palpable mass
Less than 40% are cured
204,449 New cases annually; 124,860 deaths
Early Dx is Key
Five year survival is good if diagnosed early,
but most patients are diagnosed late stage
Illumina Solution
Develop a diagnostic assay which will diagnose
ovarian cancer at an early stage
19%22%
30%33%
37%40%
47%
54%
72%
100%
92%
85%82%
69%
56%
51%
39%
26%
17%
12%
-10%
10%
30%
50%
70%
90%
110%
Ia Ib Ic Iia Iib Iic IIIa IIIb IIIc IV
Cum % of Cases
5 Yr Survival
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Ovarian Cancer Discovery
► Establish end-to-end workflow for sequencing, analysis, interpretation
► Refine analysis tools
► Sequence 25 tumour normal genome pairs (>30x depth)
► Identify genome wide catalogues of somatic mutation
► Search for mutational signatures, novel biomarkers, etc.
► Incorporate RNA and methylation data
► Gain experience in line with ICGC and similar projects
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Illumina’s Oncology Discovery Initiative
Samples Discovery Validation Dx Service Dx Product
Ovarian is here
Clinical Partnership
Obtain consent
Obtain samples
Prep samples
Build libraries
25 Tumor/
Normals
W GS
Methylome
Transcriptome
300 + samples
BeadChip
analysis
LDT in
CLIA lab
Prospective
trials
CE- IVD
US IVD
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Cancer Genome Summary Statistics
Tumour Tumour
depth
Normal
depth
Somatic
gains
Melanoma 829 40.7x 32.5x 33,345
Breast 100 31.4x 29.0x 4,838
Ovarian A 40.5x 37.3x 7,147
Ovarian B 32.5x 35.1x 1,099,481
Ovarian C 38.0x 39.1x 4,284
Ovarian D 32.7x 37.2x 1,244
Ovarian E 36.2x 35.4x 3,727
Ovarian F 37.2x 29.7x 11,984
Ovarian G 30.4x 32.0x 3,091
Ovarian H 39.9x 35.0x 5,623
Ovarian I 34.8x 34.2x 8,824
Ovarian J 35.8x 39.9x 4,815
Tumour Tumour
depth
Normal
depth
Somatic
gains
Ovarian K 32.3x 33.0x 3,255
Ovarian L 32.8x 39.6x 3,093
Ovarian M 37.6x 42.9x 4,480
Ovarian N 38.3x 37.8x 6,698
Ovarian O 36.7x 30.1x 5,485
Ovarian P 35.9x 39.2x 3,489
Ovarian Q 34.7x 35.5x 5,584
Ovarian R 35.7x 33.9x 5,973
Ovarian S 34.5x 33.6x 2,154
Ovarian T 35.2x 33.3x 2,203
Ovarian U 38.1x 35.6x 2,881
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IGV visualisation of two variants in TP53
Normal
R
Tumour
R
Normal
L
Tumour
L
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Summary of TP53 somatic substitutions (SNVs)
► 14/17 high grade serous samples have TP53 somatic substitution variants
(SNVs) – further analysis of remaining samples ongoing
► Review vs. COSMIC:
– All are in known TP53 hotspots
– All are novel observations in ovarian cancer
– Two seen previously in other cancers
► TP53 mutations reported in 97% of high grade pelvic serous carcinoma
samples in a recent study (Ahmed et al 2010)
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sample100
sample101
sample102
sample103
sample104
sample111
Tumor
Normal
Copy Number: Chr6
C6orf170, FABP7, GJA1, HSF2,
NKAIN2 ,PKIB, RLBP1L2, SERINC1,
SLC25A5P7, SMPDL3A, TRDN
AIM,1 ASC3C, ATG5, BEND3, BVES, C6orf112,
C6orf203, CCNC, GRIK2, HACE1, LIN28B, MCHR2,
MIRN587, POPDC3, PRDM1, PRDM13, PREP,
QRSL1, RPL35P3, RTN4IP1, SIM1, USP45
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Summary and Future Prospects
► A Genome-Wide Opportunity:
– Comprehensive variant catalogues
– >95% specificity and ~90% sensitivity of somatic substitutions
► System developments enable large-scale studies:
– Chemistry, software improvements (>99.9% raw data accuracy)
– HiSeq2000 platform (>300 Gb per run: two 30x genomes per instrument per
week)
► Implications for individual genome sequencing:
– Understanding disease mechanism, biomarker discovery
– Sequencing individual cancer genomes for personalised treatment
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…to all our Collaborators…
…and the Illumina teams...
Many Thanks…