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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


MT-TL2 ZDHHC9

At 6 months, the patient was not sitting or rolling and was found to have low muscle tone (hypotonia). Over time, his hypotonia has become more noticeable and currently he is unable to stand or walk. He has also developed involuntary muscle contractions (dystonia) and problems with coordination (ataxia). The … read more

This participant was born full-term after an uncomplicated pregnancy. He experienced some initial problems with grunting and wheezing (stridor), but he was able to go home on his second day of life.  He has had continued respiratory concerns, including weak cartilage in the walls of the larynx (laryngomalacia), aspiration, and … read more

After a premature and complicated birth, the participant spent 3 weeks in the NICU recovering from breathing and feeding difficulties as well as sepsis. Early on, the participant had some difficulty with fine motor skills and speech delay. He learned to walk at 17 months, but his knees would hyperextend … read more

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