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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 was born at 33 weeks and stayed in the NICU for three weeks. While in the NICU, she received breathing and nutrition support though a CPAP (Continuous Positive Airway Pressure) machine and NG (nasogastric) tube. She was identified by newborn screening to have very low T-cell lymphocyte levels. … read more

At birth, the participant had trouble feeding due to low muscle tone (muscle hypotonia) and difficulty swallowing (dysphagia), which required gastrostomy tube (G-tube) feeding until 3 months of age. While hospitalized as a newborn, a skeletal survey was performed, which revealed low bone density (osteopenia) and a bone fracture. An … read more

Shashi-Pena syndrome

Since infancy, the patient’s height, weight and head circumference have been above the 95th percentile, and X-rays have shown advanced bone age. He had two heart problems (ventricular septal defect, patent ductus arteriosus) that resolved on their own. At age 5, he was diagnosed with weak cartilage in the walls … read more

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