undiagnosed and rare disorders Archive — Page 1 of 2

Kevin Byram, MD, Erica Gray, MD, and Saralyn Williams, MD, pose in a hallway beside a sign reading “Potoschnak Center for Undiagnosed and Rare Disorders.”
October 29, 2026

Vanderbilt Undiagnosed Diseases Program helps patients find answers and clinicians expand expertise

It capitalizes on a foundational idea in medical practice: Pooling resources and knowledge from multiple disciplines results in better outcomes for patients.

Healthcare professional in blue scrubs holding a tablet, overlaid with glowing digital medical interface graphics including a heart-monitor waveform, hearts, lungs, and connected data points.
September 5, 2025

AI tools could shorten ‘diagnostic odyssey’ for patients with rare diseases

Large language models achieved diagnostic rates of 13.3% and 10.0%, compared to the historical clinical review rate of 5.6%, and they suggested next steps to evaluate the suggested diagnoses.

Conceptual illustration of a leafy tree formed by winding groups of diverse people, representing human connections and shared ancestry.
September 27, 2024

Distant relatedness in biobanks harnessed to identify undiagnosed genetic disease

VUMC researchers have developed a genetic method that clusters distantly related people to find rare variants that were present in a common ancestor.

Logo reading “RareCAP” with a red baseball cap above the letters and the subtitle “Rare Disease Clinical Activity Protocol Program.”
May 15, 2024

New online repository offers physicians quick guidance on care of rare disease patients

Vanderbilt University Medical Center has collaborated with Children’s National Hospital in Washington, D.C., to develop the Rare Disease Clinical Activity Protocol Program, or RareCAP, a growing online repository of clinical protocols designed to offer quick, practical guidance on the care of patients with rare diseases.

Abstract ceramic mosaic of interlocking puzzle-like shapes made from small tiles in yellow, blue, orange, white, gray, purple, and black.
June 22, 2023

Mosaicism and genetic disease

Genetic mosaicism — when the body’s cells do not all have the same genetic makeup — could generate variants previously thought to be spontaneous in genetic disease, and detecting parental mosaicism could clarify recurrence risk for future children.

Liz and John Potocsnak, second and third from left, with Jeff Balser, MD, PhD, left, Rizwan Hamid, MD, PhD, and Jennifer Pietenpol, PhD.
February 2, 2023

Potocsnak family’s transformative gift creates Center for Undiagnosed and Rare Disorders

A transformative gift from the Potocsnak family has established the Potocsnak Center for Undiagnosed and Rare Disorders at Vanderbilt University Medical Center.