Genome-First approach could speed up rare disease diagnoses for kids
NCT ID NCT06935019
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study compares doing a full genome sequencing test as soon as a rare genetic disease is suspected (genomics-first) versus the usual process of waiting to see a specialist first. About 200 children referred to genetics clinics at SickKids or CHEO will take part. Researchers want to see if the genomics-first approach leads to more and faster diagnoses, and if it is cost-effective.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 200 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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May 2025
- Expected to finish
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May 2028
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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Up to 18 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Referral accepted to the Genetics Clinic at SickKids or CHEO within 7 days of screening for study eligibility. * Referral is for a patient that is ≤18 years old. * Reason for referral is a suspected but as-yet-undiagnosed RD * A genetic aetiology is a possible explanation for the phenotype such that genetic testing is likely to be offered in Genetics Clinic, as determined by the research team. Exclusion Criteria: * Patient has a known or suspected clinical diagnosis using established criteria of a genetic condition with low locus heterogeneity (e.g., HHT, fCCM, NF1, TSC, others) * Referral considered "Urgent" using established site criteria. * Genome-wide sequencing (exome sequencing or GS) or a comprehensive panel that encompasses all genes relevant for the reported phenotype previously completed on a clinical or research basis. * Patient or family member previously assessed by a medical geneticist within the last 2 years for the same phenotype(s). * Patient lacks Ontario Health Insurance Plan (OHIP) or comparable coverage (as this will limit options for standard genetic testing). * Referral is solely to facilitate familial variant testing or for genetic counselling. * A family member is already enrolled in the study and was referred for the same indication. * Patient/family does not provide informed consent to participate within 2 weeks of being approached.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
2 sites. The list below names each one and where it is.
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The official record
The full official record for this study. This one lists no contact details, but it is the first place any would appear.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Children's Hospital of Eastern Ontario
Ottawa, Ontario, K1H 5B2, Canada
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The Hospital for Sick Children
Toronto, Ontario, M5G 0A4, Canada
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