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Empowering Pharmacogenomics Research

Long-read sequencing provides insight into complex genomic regions associated with response to medication, enabling personalized medicine research into the development of therapeutic management tailored to a person’s genetic makeup.

Pharmacogenomics Impacts Patient Care

Pharmacogenomics (PGx) utilizes genomic information to assess an individual’s response to certain medications. PGx can be used to predict adverse drug reactions or decreased efficacy, leading to improved health outcomes and decreased costs. An estimated 99% of people have actionable variants in PGx genes[1,2], and studies have shown that up to 55% of adults[2] are prescribed drugs for which there are PGx guidelines available.

The Benefits of HiFi Sequencing for Pharmacogenomics

Highly accurate long-read sequencing, known as HiFi sequencing, provides high resolution insight into PGx loci, which include complex variants such as pseudogenes, tandem repeats, and CNVs. Compared to other technologies, long read HiFi sequencing allows for accurate detection of structural and complex variants, direct haplotype phasing, and coverage of rare variants. With read lengths of up to 25 kb and >99.9% accuracy, HiFi sequencing enables PGx discovery and translational research to help drive personalized medicine and potentially improve patient care.

References:

  1. McInnes G, Lavertu A, Sangkuhl K, Klein TE, Whirl-Carrillo M, Altman RB. Pharmacogenetics at Scale: An Analysis of the UK Biobank. Clin Pharmacol Ther. 2021 Jun;109(6):1528-1537. doi: 10.1002/cpt.2122. Epub 2020 Dec 17. PMID: 33237584; PMCID: PMC8144239.
  2. Chanfreau-Coffinier C, Hull LE, Lynch JA, DuVall SL, Damrauer SM, Cunningham FE, Voight BF, Matheny ME, Oslin DW, Icardi MS, Tuteja S. Projected Prevalence of Actionable Pharmacogenetic Variants and Level A Drugs Prescribed Among US Veterans Health Administration Pharmacy Users. JAMA Netw Open. 2019 Jun 5;2(6):e195345. doi: 10.1001/jamanetworkopen.2019.5345. PMID: 31173123; PMCID: PMC6563578.

Spotlight: Using HiFi Reads to Advance Pharmacogenomics Research

In the following webinar, Dr. Stuart Scott and Dr. Yao Yang from Stanford University Medical Center discuss different approaches utilizing HiFi sequencing to interrogate CYP2D6 and other PGx regions.

Explore the Range of HiFi Sequencing Applications

Whole Genome Sequencing
Generate reference-quality de novo genome assemblies
Variant Detection
Comprehensively detect all variants in the human genome
Targeted Sequencing
Focus on variation in even the most difficult regions of the genome, and explore our No-Amp method of targeted sequencing
RNA Sequencing
Get a complete view of transcript isoform diversity – no assembly required

Full-Length Sequencing of CYP2D6 Variants with PacBio HiFi Reads

Poster: Full-Length Sequencing of CYP2D6 Variants with PacBio HiFi Reads

Explore our ACMG poster explaining how our recently developed streamlined end-to-end workflow enables the more accurate detection of highly polymorphic CYP2D6 loci.

Botton et al. described the inability of short-read sequencing approaches (B, C) to interrogate the promotor region of SLC6A4 (A), a gene involved with serotonin reuptake and antidepressant response, with high tandem repeat variability in this region affecting gene expression. Using PacBio technology, they were able to fully resolve and phase this region in the NA12156 Coriell sample (D). Read more about this study in this blog post on highly accurate variant calling with SMRT Sequencing

Adapted from Figure 1 in Botton MR, Yang Y, Scott ER, Desnick RJ, Scott SA. Phased Haplotype Resolution of the SLC6A4 Promoter Using Long-Read Single Molecule Real-Time (SMRT) Sequencing. Genes (Basel). 2020; 11(11):1333

Connect with a PacBio scientist to discuss how your PGx research can benefit from highly accurate long-read sequencing.

Selected Resources