A novel multivariate gene expression test toidentify immune checkpoint inhibitor responders (for research use only)

Identifying respondersto immunotherapies

As many as 44% of all newly diagnosed patients with cancer are eligible for immuno-oncology testing and therapy.1

Unfortunately, with standard of care PD-L1 IHC testing, more than half of PD-L1 positive patients do not respond to immune checkpoint inhibitors, and 1 in 6 patients who will respond are missed.2

We need a better way to identify the patients that will best respond to immunotherapies and avoid the cost and potential adverse effects of ineffective treatment.


A novel gene expression test to identify immune checkpoint inhibitor responders in non-small cell lung cancer.

About DetermaIO

DetermaIO™ is a 27-target multivariate gene expression test performed on FFPE biopsy specimens that measures the presence of subtypes of infiltrating inflammatory cells, and the presence or absence of a differentiated stromal microenvironment. DetermaIO’s proprietary algorithm combines mRNA gene expression data and interprets the physiology of both the tumor and its surrounding micro-environment in order to predict the response to immuno-oncology therapies. Data supporting a strong association with response to checkpoint inhibitors has been shown in non-small cell lung cancer (NSCLC).3 The assay is currently offered for pharma service research only as a CLIA-certified real time PCR LDT from our CAP-accredited laboratory, or as an in silico interpretation of whole transcriptome RNA data.

Tumor Biopsy

FFPE Tissue

RT-PCR Gene Expression Assessment

Algorithm Analysis

Actionable Results

DetermaIO Performance

  • In patients with NSCLC treated with an immune checkpoint inhibitor, DetermaIO-identified responders (IM+) had significantly longer progression-free survival than DetermaIO-identified non-responders (IM-).3
  • In a study presented at the Society for Immunotherapy of Cancer (SITC) Annual Meeting, data suggested that DetermaIO outperformed PD-L1 in predicting immunotherapy responders as well as non-responders.3

DetermaIO for Research

Effective Results

Standard of care PD-L1 testing incorrectly identifies many patients as potential responders to immune checkpoint inhibitors, and misses certain other patients who may respond.2  Data from a recent study suggested that DetermaIO outperformed PD-L1 in identifying both responders and non-responders.3

Reduce Wasted Spend

Immuno-therapy can cost up to $300,000 per patient.4 Accurately identify the patients that are most likely to respond, reducing expensive drug costs for those that are unlikely to benefit.

Decrease Adverse Events

30% of patients experience a serious adverse event as a result of immune checkpoint inhibitor treatment.2 Avoid introducing potential adverse outcomes (including auto-immune disease) to patients for whom treatment is unlikely to be effective.

Contact Us

Interested in learning how DetermaIO can support your research or clinical trial? Please contact us.


1. Haslam and Prasad. (2019) Estimation of the percentage of US patients with cancer who are eligible for and respond to checkpoint inhibitor immunotherapy drugs. JAMA Network Open 2(5):e192535.
2. Khagi et al. (2017) Next generation predictive biomarkers for immune checkpoint inhibition. Cancer Metastasis Rev 36:179.
3. Hout et al. One-year progression-free survival in lung cancer patients treated with immune checkpoint inhibitors is significantly associated with a novel immunomodulatory signature but not PD-L1 staining. Poster presented at: Society for Immunotherapy of Cancer (SITC) Annual Meeting; Nov 6-10, 2019; National Harbor, Maryland.
4. Institute for Clinical and Economic Review. (2016) Treatment Options for Advanced Non-Small Cell Lung Cancer: Effectiveness, Value and Value-Based Price Benchmarks. Final Evidence Report and Meeting Summary. Accessed October 2019.