card-3216_Biochemistry expert scientific with eyeglasses
Digital innovation

Driving operational improvements and quality of our services

Learn more
card-3210_Laboratory technicians conduct a series of tests on a chemical analyzer
Science Innovation

Uniquely positioned to shape, validate, and deliver biomarker assessments that strive to improve patient outcomes across diverse Therapeutic Areas

Learn more
card-3242_Scientist using tablet while colleagues working behind
Download our Corporate brochure

We are IQVIA Laboratories, a leading clinical trial laboratory services organization with end-to-end laboratory services and secure, enterprise-wide biospecimen and consent management solutions.

Download
card-3233_Laboratory scientist working at lab with micropipette, and 96 well plate
Corporate Video

Our commitment to customer success is embedded in every facet of our operations.

Learn more
card-3210_Laboratory technicians conduct a series of tests on a chemical analyzer
Science Innovation

Uniquely positioned to shape, validate, and deliver biomarker assessments that strive to improve patient outcomes across diverse Therapeutic Areas

Learn more
card-3216_Biochemistry expert scientific with eyeglasses
Digital Innovation

Driving operational improvements and quality of our services

Learn more
English You are about to exit for another IQVIA country or region specific website Please be aware that the website you have requested is intended for the residents of a particular country or region, as noted on that site. Ok Open in new tab Search
hero bg-3215_People working at laboratory

Microsatellite Instability Assay

Microsatellite Instability (MSI) assay utilizing multiplex, fluorescent PCR and capillary electrophoresis to enable sensitive detection of five mononucleotide repeat markers

Microsatellite instability (MSI) results from an accumulation of insertion or deletion of repeating units during DNA replication in tumor cells with a deficient mismatch repair (MMR) system. MSI status is associated with response/resistance to certain immune checkpoint inhibitors.

 

IQVIA MSI assay utilizes multiplex, fluorescent PCR and capillary electrophoresis to enable sensitive detection of five mononucleotide repeat markers (BAT-25, BAT-26, NR-21, NR-24 and MONO-27) in tumor FFPE specimens. Microsatellite instability at two or more mononucleotide loci is interpreted as MSI-High; microsatellite instability at a single mononucleotide locus is interpreted as MSI-Low; no instability at any of the loci tested is interpreted as microsatellite stable (MSS).

Example of Colon Cancer FFPE Tissue Specimen Demonstrating MSI-High Status

genomics-msi-1
Example capillary electropherogram demonstrating reference, normal profile in normal tissue (upper panel) and MSI-High profile in tumor FFPE tissue (lower panel). New MSI events labeled 1−5 are detected in tumor tissue.

MSI Assay Specifications

Markers BAT-25, BAT-26, MONO-27, NR-21, and NR-24 microsatellite loci
Specimen Requirements Tumor: 3 x 5um FFPE tumor slides or 3 curls or FFPE block or DNA. Minimum 20% neoplastic cellularity required. Normal: either whole blood (1-3 mL, K2EDTA) or tumor FFPE slides with clearly indicated normal tissue area or 3 x 5um normal tissue FFPE slides, curls or block. If H&E stained slide with indicated tumor normal areas is not available, will perform H&E assessment and determine specimen adequacy.
Assay Method OncoMate® MSI Dx Analysis System
System Compatibility Thermo Fisher Scientific SeqStudio Flex
Regulatory Tier RUO, GCP, CAP-CLIA
Deliverables MSI Status report. Exact number of MSI markers available as custom report.

 

Related Services

card-3233_Laboratory scientist working at lab with micropipette, and 96 well plate

Clinical Genomics Laboratory Services

Learn more
card-3215_People working at laboratory

Next Generation Sequencing Services

Learn more
card-3241_Technician holding blood tube test in the research laboratory

Immune Landscape Signatures

Learn more
card-3256_scientist team meeting

Tumor Mutational Burden (TMB) Analysis

Learn more
Learn more