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Our Current Research

Model Organisms

The Model Organisms Screening Center (MOSC) for the Undiagnosed Diseases Network (UDN) is composed of two Centers that use fruit fly (Drosophila melanogaster), nematode worm (Caenorhabditis elegans) and zebrafish (Danio rerio) genetics and biology to tackle rare and undiagnosed diseases.

Genes of interest

PRDM16 PIK3CD MED13L BSN MED14 MARS1

Meet Our Participants


The participant first noticed muscle weakness in his left calf at 42 years old. After 8 months, the participant had difficulty with both legs going up stairs. This progressed to involve weakness in the arms and legs and trouble getting up from a chair. The participant had an MRI of … read more

At a young age, the participant began experiencing chronic constipation and vertigo. His vertigo often included lightheadedness, dizziness, blurred vision and ringing in his ears (tinnitus) when he would move from sitting to standing. He was also found to have small and non-reactive pinpoint pupils. At age 39, the participant’s … read more

The participant was diagnosed with type I diabetes at age 9. At age 10, he was diagnosed with involuntary urination and was also referred to a cardiology clinic because of a sudden death in the family. At the time of evaluation, his testing was normal. However, while playing basketball at … read more

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