The Rare Diseases Clinical Research Network is an NIH-funded research network of 20 active consortia or research groups working to advance treatment for diseases that are rare. Use the search tools on this page to find the diseases we currently study. You can reach out to the indicated consortia or research groups for more information on those diseases and studies underway.
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All Diseases > Diabetes and Deafness
Diabetes and Deafness (DAD)
Alternative Names: Maternally Inherited Diabetes and Deafness (MIDD); Ballinger Wallace Syndrome; Diabetes Mellitus Type II with Deafness
Disease Category: Mitochondrial Disorders
A rare, mitochondrial (referring to specialized cell structures that produce energy) disorder characterized by hearing loss, especially of high tones, and hyperglycemia (high blood glucose levels) due to diabetes mellitus. The disorder is caused by mutations in the DNA of mitochondria (specialized cell structures that produce energy). Because the mitochondrial DNA mutation is inherited from mothers, it is a maternally inherited disorder. Onset of hearing loss usually occurs before diabetes, typically in mid-adulthood.
Research groups studying this disease
North American Mitochondrial Disease Consortium (NAMDC)View Disease Definition
Promotes research and education for the diagnosis, treatment, and cure of mitochondrial disorders while providing support to those affected.
Improves quality of life for people affected by mitochondrial disease through education, outreach, advocacy, and clinical research initiatives.