While we did not perform competition ELISAs with all 23 scFvs, based on the competition ELISA results obtained with these five scFvs (Fig. 4a–e) and the different binding intensities of the 23 phages (Additional file 3: Fig. S3), it is likely that an array of different ALS associated TDP-43 epitopes are recognized by the different scFvs. The gene discussed is TARDBP; the disease is amyotrophic lateral sclerosis.