What happens when you have been unwell for years, visited numerous specialists, undergone countless tests — and still have no clear diagnosis?

For many people, this is not a hypothetical question. It is everyday life.

Between 27 and 36 million people in the European Union live with a rare disease, while more than 300 million people worldwide are affected. Many face a long and frustrating journey towards diagnosis.

Some experience something equally difficult: feeling that their symptoms are being dismissed, minimised or attributed to stress without a satisfactory explanation. This experience is sometimes described as medical gaslighting.

Not every unexplained symptom points to a rare genetic condition. But the absence of a diagnosis does not necessarily mean the end of the investigation.

What if you could explore your own genetic data?

Whole-genome sequencing has made it possible for individuals to access an extraordinary amount of information about their genetic makeup.

Yet receiving a genetic data file is very different from understanding it.

A single genome contains millions of variants. Most are harmless, many are poorly understood, and some may warrant further investigation by qualified specialists.

In our recent independent research, we developed and documented a four-track computational approach to exploring rare genetic variants using consumer whole-genome data.

Starting from more than 60,000 variants without established database identifiers, the analysis narrowed the search to 249 coding variants and ultimately retained five candidates for possible further laboratory investigation.

None of these findings constitutes a diagnosis. The purpose of the research was to demonstrate how individuals can approach their genomic data systematically, recognise analytical errors and document findings that may be worth discussing with medical professionals.

Our approach is based on a simple principle: patients should be able to understand, question and participate meaningfully in the investigation of their own health.

The accompanying scientific manuscript, A four-track, MD5-audited pipeline for prioritising rare variants from consumer whole-genome data, is currently awaiting deposit in a suitable research repository. A link to the full text will be added when available.

Important notice

This article is provided for informational purposes only. It does not constitute medical advice, genetic counselling, clinical genetic interpretation, diagnosis or treatment. Computational findings, including rare genetic variants, cannot establish the cause of symptoms without appropriate clinical assessment and, where necessary, laboratory confirmation. No diagnosis or medical outcome is guaranteed. It does not replace qualified healthcare professionals. Medical decisions, including the interpretation of findings for clinical purposes, should be made with appropriately qualified clinicians or clinical geneticists. Genomic and medical information is highly sensitive and should only be shared through appropriate, secure channels.