The GGGGCC repeat expansion in C9ORF72-ALS/FTD can be translated into five dipeptide repeat (DPR) proteins, including poly(GR) and poly(GA). Here, the authors develop assays to detect the levels of these DPR proteins in the CSF of individuals with ALS/FTD.
- Gopinath Krishnan
- Denitza Raitcheva
- Fen-Biao Gao