duet +modC | biomodal
duet +modC

Integrated genetics and methylation, from the same sample.

duet +modC measures genetic variants and modified cytosine together from a single sample, across gDNA, FFPE and cfDNA, with market-leading sensitivity, specificity and genetic accuracy.

Accurate genetics and high-quality methylation from one workflow

Accurate genetic and complete epigenetic insights from the same sample

Genetic variation and DNA methylation work together to shape biological function, disease development and cellular state. Yet many workflows require separate assays, additional sample material and downstream integration of independent datasets.

duet +modC brings genetic variants and modified cytosine (modC) together from the same DNA molecule in a single workflow. duet's hairpin architecture copies and retains the original genetic sequence before conversion, so you keep confident variant detection while measuring high-quality methylation from the same sample.

The result is integrated genetic and epigenetic data that supports confident biological interpretation while simplifying experimental design and analysis, when independent 5mC and 5hmC resolution is not required.

Why choose duet +modC?

01

Genetics and methylation, together

5 bases from a single molecule, integrated in one workflow and one dataset rather than combined from separate assays downstream.

02

High-quality methylation: sensitivity and specificity

Measure modified cytosine with market-leading sensitivity and specificity, reducing the false-positive calls and missed events that obscure biological signal.

03

High-confidence genetic variant detection

duet's hairpin approach copies and retains the original genetic sequence before conversion, delivering confident C>T variant detection, including low-frequency variants, while resolving methylation from the same molecule.

04

One workflow, every sample type

Generate integrated genetic and methylation data from gDNA, FFPE and cfDNA using a single workflow, rather than maintaining separate assays for different sample types.

05

No harsh chemistry

duet uses a gentle enzymatic workflow, with no bisulfite and no harsh chemical conversion that degrades and destroys DNA before you can read it.

06

Built-in error correction

Because duet reads both the original and copy strands, its read-resolution software flags implausible strand pairings as an N, filtering out sequencing and PCR errors that traditional methods carry through.

Performance data


High sensitivity and specificity for modified cytosine detection

duet +modC detects modified cytosine with high sensitivity and specificity, helping researchers identify more true methylation events while reducing false-positive calls and missed signals.

Why it matters: Better data quality supports more reliable biological interpretation.

High-confidence genetic variant detection

duet +modC preserves accurate variant detection while simultaneously generating modified cytosine data, including confident detection of biologically important C>T mutations, with SNP calling accuracy comparable to leading genetic sequencing approaches.

Germline variant calling performance using NA12878 at 30x coverage

Germline variant calling performance using NA12878 at 30x coverage

Why it matters: Generate epigenetic insight without sacrificing genetic accuracy. No compromise between genetic and epigenetic data quality.

Software included, analysis on your terms

Every duet +modC kit includes the duet software pipeline and modality XPLR, taking you from raw reads to integrated genetics and methylation without assembling your own pipeline. Run it on a workstation, your HPC or the cloud, and explore multiomic results with no dedicated bioinformatician required. Analysis tools come standard, and your data stays yours.

duet workflow
Why it matters: Get to biological insight faster, on your own infrastructure, with no custom pipeline to build and no data lock-in.

Applications

duet +modC supports research that benefits from integrated genetic and epigenetic analysis across sample types, without requiring independent 5mC and 5hmC resolution.

  • Aging studies
  • Allele-specific methylation analysis
  • Biomarker discovery
  • Cancer research
  • Differential methylation analysis
  • Epigenotyping
  • Fragmentomics
  • Liquid biopsy (cfDNA/ctDNA) studies
  • Minimal residual disease (MRD) assay development
  • Multi-cancer early detection (MCED) assay development
  • Population studies, including epigenome-wide association studies (EWAS)
  • Simultaneous detection of genetic variants and methylation
  • Tumor profiling, including FFPE
  • Whole-genome or targeted methylation sequencing

Ordering information

Request quote
Catalog number Product name Product description
5205 duet +modC 8x reaction duet +modC assay, duet software, modality XPLR for pre and post-sequencing workflows for 8 reactions
5206 duet +modC 24x reaction duet +modC assay, duet software, modality XPLR for pre and post-sequencing workflows for 24 reactions
4103 UDI 8x reactions Unique dual indices for 8 reactions
4102 UDI 24x reactions Unique dual indices for 24 reactions
4104 UDI 96x reactions Unique dual indices for 96 reactions
Specifications
Sample types gDNA, FFPE, cfDNA
Input requirements 10–80 ng gDNA; 5–30 ng cfDNA
Sequencing compatibility Standard short-read sequencing platforms
Analysis duet software + modality XPLR

Software outputs • Resolved FASTQ • BAM • VCF (germline variant calls) • QC reports • Allele specific methylation file • Zarr datastore (modC data)

FAQs

What is duet +modC?
duet +modC is a multiomic sequencing workflow that generates genetic variants and modified cytosine (modC) from the same sample in a single workflow, combining library preparation, sequencing analysis and multiomic interpretation.
What sample types are supported?
gDNA, FFPE and cfDNA. Recommended inputs are 10–80 ng gDNA and 5–30 ng cfDNA.
What is modified cytosine (modC)?
Modified cytosine (modC) is a combined readout of methylated forms of cytosine (5mC and 5hmC together) involved in epigenetic regulation. duet +modC measures modC while preserving accurate genetic sequence information from the same sample.
Does duet +modC distinguish between 5mC and 5hmC?
No. duet +modC measures combined modC. Researchers who require independent 5mC and 5hmC resolution should use the duet 6-base family.
How does duet +modC protect genetic accuracy while reading methylation?
Like many methylation methods, duet converts unmodified cytosines to read methylation state. What is unique to duet is that its hairpin adapter first captures a complementary copy of each fragment's genetic sequence before conversion. Reading both strands lets duet reconstruct the original base, preserving C>T variant detection, while flagging sequencing and PCR errors as an N. Conversion-only methods do not do this.
Can duet +modC detect C>T mutations?
Yes. duet +modC preserves accurate variant detection, including C>T mutations, while simultaneously generating methylation data.
What are variant-associated and allele-specific methylation?
Because duet +modC generates phased genetic and methylation information from the same molecule, it supports variant-associated methylation (how sequence variation relates to methylation) and allele-specific methylation (methylation differences between inherited copies of a region).
How is duet +modC different from duet +modC mosaic?
duet +modC is the multi-sample-type workflow for gDNA, FFPE and cfDNA, ideal for discovery and translational research. duet +modC mosaic is optimized specifically for cfDNA and precious low-input liquid biopsy samples, using a single-stranded workflow to recover more molecules and preserve native fragmentomic information. Both deliver combined modC and share the same analysis stack.
How is duet +modC different from duet 6-base?
duet +modC measures combined modC (5mC and 5hmC together), the efficient route when you do not need to distinguish them. duet 6-base resolves 5mC and 5hmC as independent signals. Both preserve genetics on the same molecule and share the same analysis stack.
What is modified cytosine sequencing?
Modified cytosine sequencing measures methylated forms of cytosine, including 5mC and 5hmC together as a combined modC signal. duet +modC adds genetic variant information from the same molecules, so methylation data is interpreted alongside the original genetic sequence.
Does duet +modC include quality controls?
Yes. Integrated methylation controls ship with every kit, so you can confirm conversion performance and data quality in every run.
What software is included?
The duet software pipeline plus modality XPLR for biological QC, visualization and multiomic data exploration.
Can I analyze data in my own environment?
Yes. The software supports workstation, HPC and cloud deployments and produces community-standard file outputs.

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