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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’s complex medical history began shortly after birth. Doctors noted that he had different facial features such as an unusual head shape. He also seemed to tire easily and had poor weight gain. At 1 month of age, the participant’s parents were concerned about reduced muscle tone (hypotonia). He … read more

The participant has experienced involuntary movements of his arms, legs, and face continuously since birth (choreoathetosis). He also has low muscle tone, underactive reflexes, and abnormal eye movements with episodes of eye rolling. He has brain disease with seizures (epileptic encephalopathy) and a recent MRI of his brain showed brain … read more

TBX2

The patient was born with a cleft lip, cleft palate, atrial septal defect, skeletal abnormalities, and absent thymus with severe T-cell deficiency. At 6 months, he underwent a thymus transplant and was diagnosed with complete DiGeorge syndrome. He later developed inflammation of the thyroid gland with hypothyroidism, followed by hyperthyroidism. … read more

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