ERVW-1 and amyotrophic lateral sclerosis: Using the same tissue samples as in the present study, we also recently profiled transcription of HERV-K(HML-2) and HERV-W LTR retrotransposons by direct Sanger sequencing of cloned cDNAs and RT-qPCR and Western blot analyses, but failed to find significant differences when comparing ALS and controls [204].