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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 patient was born early at 35 weeks, but only spent one day in the neonatal intensive care unit (NICU). At about 9 months of age, the patient’s parents started having concerns because he was not meeting his developmental milestones. Although he continues to make steady progress, the patient has … read more

Shortly after birth, the patient was noticed to have decreased tone and difficulty breathing. She struggled to drink from a bottle and would breathe liquids into her airway (aspirate). At 6 months, a G tube was placed. Currently she struggles with chewing and swallowing and is unable to drink out … read more

At 10 months of age, the participant was found to have low muscle tone (hypotonia) and developmental delay. He said his first words at 9 months and has added vocabulary slowly over the years. According to his speech therapist, he has a diagnosis of dysarthria. He began walking at 28 … read more

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