The Economics of NGS:

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The Economics of NGS:

A Cost Comparison of NGS implementations with legacy technologies

Presenter: Dr. Peter Meintjes

September, 2016

Potential Conflict of Interest Declaration § 

I work for Omixon, the commercial provider of NGS-based HLA typing product, Holotype HLA.

Overview § 

Introduction and Background

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NGS Overview

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Small/Large lab modeling (24/96 samples/week)

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Results

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Summary and Conclusions

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Questions

Introduction to NGS for HLA “Recent technological advances, cumulatively called NGS, provide the first opportunity to fully characterize and fully phase the HLA genes” § 

The Technique –  Long Range PCR Amplification –  Clonal sequencing of Amplicons –  Assembly of whole gene, nucleotide resolution sequences

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The Goal –  Automated, high-throughput analysis –  Unambiguous results –  No reflexive testing

NGS workflow Sample Prep (Pre-PCR)

Library Prep (Post-PCR)

Sequencing

Analysis

Scientific & Technical Benefits of NGS § 

Complete resolution –  nucleotide-level, 3-field or higher

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Increased characterization/coverage –  whole gene consensus sequences of all exons and introns

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Allele phasing –  Unambiguous typing

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High-throughput batching of samples

Small/Large (24/96) lab modeling § 

Small Lab –  24 samples/week (~1,250 samples/year) –  2x 12 samples/run

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Medium Lab –  48 samples/week (~2,500 samples/year) –  2x 24 samples/run

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Large Lab –  96 samples/week (~5,000 samples/year) –  2x 48 samples/run

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Lab + small registry –  192 samples/week (~10,000 samples/year)

Capital Equipment Investment Instrument

Cost*

Illumina MiSeq

$100,000

Illumina MiSeq Support (Years 2 & 3)

$34,000

Size selection equipment (Optional)

$10,000

Plate fluorometer (Optional)

$20,000

qPCR machine (Optional)

$30,000

5x PCR machine

$35,000

64-bit computer with 16+ GB RAM

$3,000

1-2x Liquid handler (Optional, pre & post PCR)

$50,000+ (each)

*Based on figures from four US Labs, rounded to $1,000

The Importance of Pooling § 

Traditional cost analysis are expressed as “$/locus” –  NGS (specifically per-sample indexing or locus “pooling”) challenges this approach

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Why? –  Cost of enzymes and labor used prior to pooling scales per locus –  Cost of enzymes and labor used after locus pooling scales per sample

Step

Scale mechanism

Manufacturing/QC

Vendor Specific

Pre-pooling (e.g. Amp’ing, tagmentation)

Increases per locus

Post-pooling (e.g. library prep)

Increases per sample

Sequencing

Decreases per sample

Labor

Per technician

NGS Cost/sample (relative)

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Sequencing costs become a smaller proportion of cost/sample as you increase the number of samples

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Labor increases ‘per locus’ prior to pooling

Cost Savings for Reflexive Testing Technique

Cost of Initial Typing

Cost of Ambiguity Reflex

Cost of Post-transplant Reflex

SSO

Low

Medium

High

SBT

High

High

High

NGS

Medium

None

None

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Almost zero ambiguities means no reflexive pre-transplant tests

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High resolution typing of solid organ donors also eliminates reflexing post-transplant when antibodies are observed

Cost/locus for NGS (Holotype)

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Labor costs associated with SBT are very high

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96 samples/run have lower sequencing cost/sample than 24 samples/run

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Diminishing extra costs of additional samples and loci (if single technician assumption is met)

Hands on time per locus (Holotype)

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SSO and NGS both have batching capabilities that drastically alter the hands on time per locus and per sample

Results/Benefits § 

Time savings –  Hands on time is lower –  No high-res reflexing when antibodies detected –  Interpretation times are near zero

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Convenience –  Scheduling is easier, batching is useful

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Others –  Capital equipment is relatively easily financed, or financed through the vendor (reagent rental) –  Empowers labs to keep everything in house

Summary and Conclusions § 

NGS is cost competitive per sample with SSO at 24 samples for 11 loci, and costs are further reduced with increasing number of samples

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Earlier ‘locus pooling’ drives economic efficiencies for cost of goods and labor costs

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28 hour turnaround from DNA to unambiguous typing means NGS is suitable for most SOT and all BMT workflows –  Current NGS methods are not suitable for deceased donor typing

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HLA Labs of the future will only need to support two workflows, deceased donor by preferred methods and everything else by NGS –  –  –  – 

Reduction of workflows Reduced inventories Less training Less validation

Questions?

Peter Meintjes Chief Commercial Officer [email protected]