In accordance with two other studies 10, 65 we were unable to demonstrate a quantitative difference in hypo‐phosphorylated Nf‐H levels between lesions and controls using immunohistochemical staining for SMI32 (data not shown), whereas an increase of hypo‐phosphorylated neurofilaments in MS has been described in other studies 28, 29, 66, 86, 98. The gene discussed is NEFH; the disease is myeloid sarcoma.