A comprehensive analysis of 2,977 patients with movement and coordination disorders has identified CD99L2 gene mutations as a previously unrecognized genetic cause of neurological disease. This substantial patient cohort represents one of the largest systematic investigations of rare movement disorders to date.
The multinational study, published in Nature Genetics, revealed that mutations in CD99L2 disrupt essential nerve cell communication pathways. What makes this discovery particularly significant is that CD99L2 was already well-characterized for its immune system functions related to cell adhesion and migration. The neurological role identified in this study was entirely unexpected, suggesting the gene maintains multiple critical biological functions.
These findings provide clinical researchers and geneticists with a new diagnostic tool for investigating cases of unexplained neurological movement disorders, potentially offering answers to patients who have undergone extensive testing without clear diagnosis.
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