Understanding unclear genetic changes in Long QT syndrome
Decrypting Variants of Uncertain Significance in Long-QT Syndrome
This project uses lab tests and AI to figure out whether specific KCNQ1 gene changes cause Long QT heart rhythm problems.
Quick facts
| Grant type | R01 grant |
|---|---|
| Study type | NIH-funded research |
| Funding institution | Vanderbilt University NIH-funded |
| Lab location | 1 site (Nashville, UNITED STATES) |
| Project ID | NIH-11379416 on NIH RePORTER |
What this research studies
If you or a family member has a KCNQ1 gene change labeled a 'variant of uncertain significance,' this team runs automated lab tests that measure how those changes alter the heart's ion channel function. They also study protein structure, stability, and how much of the protein reaches the cell surface, and then combine those lab results with sequence data using machine-learning models built specifically for KCNQ1. The group has already tested hundreds of variants and will experimentally test predictions for over a hundred unclear variants from public databases to improve an online prediction tool. Results are intended to help clinicians and genetic counselors decide whether a variant is likely harmful or benign.
Who could benefit from this research
Good fit: People who have Long QT syndrome or who carry a KCNQ1 variant of uncertain significance are the main candidates for this work.
Not a fit: Patients whose arrhythmias are caused by non-genetic factors or who have variants in unrelated genes are unlikely to benefit directly.
Why it matters
Potential benefit: If successful, the work could reclassify unclear genetic results so patients get clearer diagnoses, more tailored care, and informed family screening.
How similar studies have performed: The team and others have previously used high-throughput functional testing and gene-specific algorithms to reclassify many KCNQ1 and KCNE1 variants, showing promising translational results.
Where this research is happening
Nashville, UNITED STATES
- Vanderbilt University — Nashville, United States (Active)
Researchers
- Principal investigator: Sanders, Charles R — Vanderbilt University
- Study coordinator: Sanders, Charles R
About this research
- This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
- Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
- For full project details, budget, and progress reports, visit the official NIH RePORTER page below.