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I am Intramural Blog

mutation

Sugar Molecule Could Resolve Rare Diseases

IRP Research Hastens Development of First Treatment for Genetic Muscle Condition

Tuesday, February 28, 2023

cartoon highlighting one person in a crowd

An old medical adage warns doctors that when they hear hoofbeats, they should first think of horses, not zebras. After all, when someone comes into the hospital with a cough, the most likely explanation is something mundane like the flu. However, some patients truly are medical zebras, affected by a disease that afflicts very few others.

IRP senior investigator Marjan Huizing, Ph.D., has learned quite a bit about those zebras since arriving at the National Human Genome Research Institute (NHGRI) as a postdoctoral fellow in 1998. To help commemorate Rare Disease Day today, Dr. Huizing spoke with the “I Am Intramural” blog about her research on an array of ailments linked to a small sugar molecule called sialic acid, some of which are extremely rare.

Mislabeled Proteins Linked to Birth Defects

IRP Researchers Discover Genetic Disorder Affecting the Brain and Skull

Thursday, March 3, 2022

baby

A baby is born with a birth defect every four and a half minutes in the United States, adding up to one in every 33 babies born each year in this country. While some birth defects can be corrected or treated, many result in life-altering disabilities, and sometimes the child doesn’t survive. In fact, birth defects account for about 20 percent of infant deaths in the U.S. World Birth Defects Day, celebrated on March 3 each year, honors the people and organizations who are working to understand, prevent, and treat birth defects.

One of these organizations is the Undiagnosed Diseases Program (UDP) at NIH, which connects experts across the IRP’s 23 Institutes and Centers in a joint effort to find explanations for the “most puzzling medical cases" referred to the NIH Clinical Center.

Breakthrough Treatment Brings Hope to Children with Tumor Disorder

Brigitte Widemann Recognized for Pioneering Work on Debilitating Disease

Wednesday, August 18, 2021

Dr. Brigitte C. Widemann

Getting diagnosed with a serious illness as an adult can be devastating, so one can hardly imagine the impact of receiving such news as a child, particularly when the disease has no good treatments. Until recently, this was the case for many children with the potentially severe and frequently disfiguring condition neurofibromatosis type 1 (NF1). However, pioneering research led by IRP senior investigator Brigitte C. Widemann, M.D., led to the first-ever drug approved by the U.S. Food and Drug Administration (FDA) to treat the condition. For this groundbreaking work, Dr. Widemann, her IRP research team, and her collaborators outside NIH were named as finalists for the 2020 Samuel J. Heyman Service to America Medals, also known as the ‘Sammies,’ an award that honors exceptional work by government employees.

Rare Genetic Mutation Links Two Neurological Diseases

Globe-Spanning Collaboration Connected ‘Viking Gene’ to Dementia and ALS

Monday, June 21, 2021

A man with ALS uses a head-mounted laser pointer to communicate with his wife by pointing to letters and words on a communication board

June was an important month in the life of baseball great Lou Gehrig. It was the month he was born and the month he was first picked for the Yankees’ starting lineup. Sadly, it was also the month in 1939 when he was diagnosed with the neurological disease that bears his name — Lou Gehrig’s disease, also known as amyotrophic lateral sclerosis (ALS) — and the month he died of that disease two years later. It is appropriate then that ALS Awareness Day is observed on June 21 as a day of hope for those searching for effective treatments and, ultimately, a cure.

IRP senior investigator Bryan J. Traynor, M.D., Ph.D., a neurologist at the National Institute on Aging (NIA), is one of the people leading that search. Best known for his work unraveling the genetic causes of ALS and frontotemporal dementia (FTD), he led an international consortium of researchers that uncovered a mutation on chromosome 9 that is the most common ‘familial’ cause of both ALS and FTD. In fact, this mutation, which disrupts the function of the C90RF72 gene, is responsible for 40 percent of all familial cases of ALS and FTD in European and North American populations, meaning cases in which a family member also has the disease. The discovery, published in 2011, revolutionized the scientific understanding of neurodegenerative diseases and the relationships between them. It also suggested a potential target for future gene therapies.

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