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Diseases Studied

The Rare Diseases Clinical Research Network is an NIH-funded research network of 21 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.

This network focuses on clinical research and does not generally support clinical care outside of research activities. To learn about other rare diseases, please visit the Genetic and Rare Diseases Information Center (GARD), which is an NIH program that helps the public find reliable information about rare and genetic diseases. Their staff are specialists. Contact them at 1-888-205-2311 or email GARDinfo@nih.gov.

All Diseases > Spastic paraplegia 51

Spastic paraplegia 51

Alternative Names: SPG51

Disease Category: Spastic Paraplegia

Spastic paraplegia type 51 (SPG51) is a childhood-onset, complex form of hereditary spastic paraplegia caused by biallelic pathogenic variants in AP4E1, one of the four genes encoding the adaptor protein complex 4 (AP-4). Along with AP4B1 (SPG47), AP4M1 (SPG50), and AP4S1 (SPG52), it belongs to the group of AP-4–associated hereditary spastic paraplegias.

Research groups studying this disease

Spastic Paraplegia
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Spastic Paraplegia Centers of Excellence Research Network (SP-CERN)