Purpose of study

The purpose of this study is to validate the use of the EpiSign test in the diagnosis of rare genetic diseases in Canada through collection of real-world evidence. The study will assess the yield, impact and utility of EpiSign in the first stage of diagnosis, as well as a reflex test after a patient’s extensive genetic and genomic testing fails to provide a clear diagnosis.

Who can this study help?

EpiSign can provide diagnostic insight to patients who are suspected of having a syndrome with a defined episignature, or patients with undifferentiated intellectual disability or developmental delay. These patients fall into 2 groups:

First-visit patients → these patients are genetics naïve or have only received standard microarray and/or fragile X testing
Reflex patients → these patients have had extensive genetic testing, including large gene panels and whole exome sequencing, but do not have a diagnosis

Sample Requirements

Peripheral blood collected in EDTA (mauve top) vacutainer. Extracted DNA can also be submitted. Please specify concentration and method of extraction, source must be originally from peripheral blood

Study Design