The most robust, efficient and effective models are orthotopic patient-derived xenograft (PDX) models.1 Widely viewed as the "gold standard" of xenograft tumor models in oncology research, Certis brings a whole new level of excellence to PDX model development and in vitro and in vivo study design and execution.
When seeking clear and compelling evidence of anticancer drug efficacy, the most clinically relevant research in vivo model available is an orthotopic patient-derived xenograft (orthotopic PDX or O-PDX murine models).
Our scientific team provides expert input into tolerability and efficacy study designs with flexible options for dosing, frequency of formulation and imaging, in-life bleeds and measure-only extensions
With high-resolution imaging technology, our cancer researchers not only overcome variability associated with manual tumor volume measurement (TVM), we are able to study tumor response in real time—quantitatively, repeatedly, without interfering with the microenvironment or biological processes under study. Industry-leading imaging technologies, including our own murine-scale MRI machine, enable precise measurement of tumor volume without resection—and offers visual reproducible proof of tumor response beyond graphs.
in vivo studies
Certis custom-develops the world’s most clinically relevant, orthotopic patient-derived xenograft (O-PDX) tumor models to study individual cancers and their response to therapies.
Poor efficacy results account for 57% of late-stage failures in oncology clinical trials2
The Result: Clinically relevant results, and reliable, actionable information for your go or no-go development decisions.
Our culture fosters collaboration, precision and exacting scientific standards. Collaborate with our specialized team of PhD scientists with deep knowledge of orthotopic PDX development, advanced imaging technologies and bioassay expertise. From study design through execution, you’ll work closely with our experts.
in vivo Assays Paired with advanced imaging
We pair orthotopic tumor models with advanced diagnostic technologies and relentless scientific resolve to predict therapeutic response with certainty. We use murine-scale imaging technology to visually confirm changes in tumor volume.
The Result: Armed with this information, you can make development decisions with certainty—more confident that results from animal studies will translate into clinical development.
EX vivo and in vitro screening
To support early screening studies, Certis also offers proprietary cell lines derived from our PDX tumor models, providing a paired platform for transitioning from in vitro to in vivo studies. Our integrated approach empowers you to make decisions that are more precise, timely and cost-efficient.
For many specimens, the donor patient’s full treatment history is available. If your desired phenotype is particularly difficult to find, Certis has the necessary CLIA license to directly source tissue. Both in vitro and in vivo test systems can be customized to mimic immune response, using humanized mouse models.
Our collaborations with a number of hospital systems, cancer centers and private practices facilitate access to a broad array of tumor tissues and malignancies.
1 Whitehouse et al. A Novel Orthotopic Patient-Derived Xenograft Model of Radiation-Induced Glioma Following Medulloblastoma. Cancers (Basel). 2020.
2 Fogel DB. Factors associated with clinical trials that fail and opportunities for improving the likelihood of success: A review. Contemp Clin Trials Commun. 2018.
3 Qiu W, Su GH. Development of orthotopic pancreatic tumor mouse models. Methods. Mol Biol. 2013.
4 Walters DM, Stokes JB, Adair SJ, et al. Clinical, Molecular and Genetic Validation of a Murine Orthotopic Xenograft Model of Pancreatic Adenocarcinoma Using Fresh Human Specimens. PLoS One. 2013.
5 Das Thakur, M., Salangsang, F., Landman, A. et al. Modelling resistance in melanoma reveals a strategy to forestall drug resistance. Nature 2013