TABLE 2.

Studies detecting SEPs through transcriptomic and/or mass spectrometry techniques.

Species	Technique	Number of SEPs discovered	Reference
Human	MS of HLA-I complexes	240	Chen et al. (2020)
Human	MS of HLA-I complexes and Ribo-seq	>500	Chong et al. (2020)
Human	MS of HLA-I complexes and Ribo-seq	320	Martinez et al. (2020)
Human	MS	1	D’Lima et al. (2017)
Human	MS and RNA-seq	>100	Ma et al. (2016)
Human	MS and RNA-seq	311	Ma et al. (2014)
Human	MS and RNA-seq	90	Slavoff et al. (2013)
Human	MS	197	Oyama et al. (2007)
Mouse	Ribo-seq and MS	1	Tharakan et al. (2020)
Mouse	MS	4	Budamgunta et al. (2018)
Zebrafish	Ribo-seq and MS	1	Pauli et al. (2014)
Zebrafish	Ribo-seq and MS	1	Herberg et al. (2018)