UCHL1 was previously identified as increased in abundance in CSF of ALS patients in a targeted multiple reaction monitoring mass spectrometry, non‐targeted mass spectrometry, Luminex and Simoa assays (Li et al., 2020; Oeckl et al., 2020; Zhu et al., 2019). The gene discussed is UCHL1; the disease is amyotrophic lateral sclerosis.