Case Report: Amyotrophic Lateral Sclerosis (ALS) and Chronic Inflammatory Demyelinating Polyneuropathy (CIDP) Coexistence in a Patient with C9orf72 Mutation (P11-11.002)

We present a case of concurrent ALS and CIDP, highlighting diagnostic challenge and questioning whether they are distinct entities or part of a broader disease spectrum. This is the first reported case of immune-mediated polyneuropathy in an ALS patient with the C9orf72 mutation.