Table 2. Number of uORFs in GRCh38 that were conserved in each of four other human genomes, at varying levels of conservation.

Level 7 indicates a perfect match contained in the 5’ UTR region of a protein-coding transcript at the correct gene locus. Values in parentheses are the number of cases in which the best sequence match occurred at a different genomic location (>1kbp away), not the one previously annotated.

Conservation score		Han1	CHM13	Ash1	PR1
Conserved	7	1,931	1,943	2,078	2,065
	6	14	15	1	2
	5	66	68	6	4
	4	25 (5)	27 (5)	5 (0)	2 (0)
	Subtotal	2,036 (5)	2,053 (5)	2,090	2,073
Not conserved	3	146	131	108	125
	2	2	1	0	0
	1	4	5	0	0
	0	6	4	1	1
	Subtotal	158	141	109	126