DECIPHER: How Individuals with Rare Genetic Disorders Can Help Build a Global Knowledgebase

Each finding – whether a sequence variant, copy-number change or other structural variant – is then contextualised against population data, protein structures, computational predictions, research findings and other patient data, so that an isolated case can become part of a much bigger picture.

That picture only grows because patients and their families choose to share their data with the clinical genetics services, diagnostic laboratories, and research teams supporting them. Each deposited variant and phenotype adds to a resource that genomic medicine professionals everywhere can draw on, often connecting separate teams investigating the same rare variant and condition, through DECIPHER’s matchmaking tools.

The platform enables active interpretation of patient data, mapping variants onto protein structures, reporting missense and splicing variant impact predictions, and linking out to expert-curated reports from groups such as ClinGen and Gene2Phenotype, alongside research findings from population and functional studies.

DECIPHER continues to evolve, with a new release roughly every two months. Recent updates include displaying individualised therapy information curated by the N=1 Collaborative, and showing whether a variant has been assessed for eligibility for intervention. Other updates include the sharing of cancer case-frequency data drawn from English diagnostic laboratories, single-cell expression data in human embryos, and updated population allele frequency data from the Genome Aggregation Database. Each update adds another layer of context to help distinguish a harmless genetic variant from a disease-causing change. In this way, clinicians, patients and their families can benefit from access to the most up-to-date scientific research findings.

None of this would carry weight without patients and their families agreeing to share data and the clinicians and researchers depositing that data into DECIPHER. A variant uploaded today might be the missing piece that confirms someone else’s diagnosis tomorrow, or the evidence that finally reclassifies a long-uncertain finding elsewhere.

Depositing data into DECIPHER costs little time or effort, yet the collective knowledge it builds, drawn from clinics and laboratories across dozens of countries, ultimately strengthens diagnosis and care for patients far beyond the one whose data was originally shared.

For families facing a rare and often undiagnosed condition, that exchange of information, freely given and freely shared, can be the difference between years of uncertainty and an answer.