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. 2021 Jul 13;12:693054. doi: 10.3389/fimmu.2021.693054

Table 1.

Responses to the HLA-A2-restricted, SARS-CoV-2-derived peptides used and homology with HCoVs.

Antigen Responders Literature % of homology with HCoV
Prot. Code Tot, n=19 Mid, n=10 Old, n = 9 Reported Frequency a NL63 229E OC43 HKU1
E SLV 8 7 1 Not tested 22.2 22.2 44.4 44.4
M KLL 4 4 0 N (14) 33.3 33.3 44.4 33.3
L (15)
L (16)
M TLA 6 6 0 N (17) 20 20 20 10
N (18)
M GLM 5 3 2 N (16) 33.3 44.4 44.4 33.3
L (19)
N ALN 5 4 1 N (20) 11.1 22.2 66.6 44.4
N (17)
N LQL 2 1 1 N (20) 22.2 44.4 44.4 44.4
N (17)
N (14)
N LAL 4 1 3 N (20) 22.2 22.2 11.1 11.1
L (17)
H (21)
N LLL 5 5 0 N (20) 22.2 22.2 11.1 11.1
N (18)
N (21)
L (17)
L (4)
L (6)
L (16)
H (14)
N RLN 3 3 0 Not tested 0 11.1 11.1 11.1
N GMS 4 3 1 L (33) 11.1 11.1 22.2 11.1
L (17)
L (15)
L (16)
N ILL 4 3 1 L (20) 22.2 11.1 33.3 22.2
RdRp NLI 3 2 1 N (6) 44.4 22.2 44.4 44.4
RdRp YTM 4 3 1 L (15) 80 70 80 80
RdRp SLL 2 2 0 Not tested 55.5 33.3 55.5 55.5
RdRp KIF 3 3 0 Not tested 70 70 90 90
RdRp RLA 2 0 2 Not tested 77.7 77.7 100 100
RdRp YLP 4 4 0 Not tested 100 81.8 81.8 100
RdRp LMI 3 2 1 N (17) 55.5 55.5 88.8 88.8
RdRp MLD 7 6 1 Not tested 44.4 44.4 66.6 66.6
S TLD 6 4 2 N (14) 11.1 0 11.1 0
L (16)
S YLQ 5 4 1 L (16) 0 0 44.4 44.4
H (22)
H (4)
H (15)
H (6)
H (18)
S KIA 7 5 2 N (42) 22.2 11.1 22.2 33.3
L (22)
S KLP 6 4 2 N (16) 22.2 33.3 22.2 22.2
L (22)
S SII 5 2 3 N (22) 0 0 11.1 22.2
L (15)
L (19)
L (16)
S LLF 6 5 1 N (16) 55.5 33.3 66.6 66.6
L (22)
S ALN 4 2 2 N (20) 66.6 55.5 66.6 66.6
N (17)
N (18)
L (22)
S VLN 4 3 1 N (17) 33.3 33.3 66.6 66.6
N (16)
L (22)
H (15)
H (19)
S RLD 4 3 1 N (16) 44.4 44.4 66.6 66.6
S RLQ 2 2 0 N (18) 44.4 44.4 55.5 55.5
L (16)
H (22)
S HLM 4 4 0 L (16) 44.4 33.3 44.4 44.4
S VVF 1 1 0 N (6), 33.3 44.4 44.4 33.3
L (16)
S RLN 5 4 1 N (17) 11.1 22.2 55.5 33.3
N (16)
N (18)
L (22)
S NLN 4 3 1 N (22) 33.3 55.5 55.5 55.5
N (17)
N (16)
S FIA 2 1 1 N (16) 0 33.3 11.1 11.1
N (14)
N (20)
N (17)
L (22)
L (18)
H (19)
ORF3a ALS 3 2 1 N (16) 33.3 NA b NA NA
L (6)
H (14)
ORF3a LLY 6 2 4 N (16) 11.1 NA NA NA
H (17)
H (4)
H (6)
ORF6 HLV 5 3 2 L (19) NA NA NA NA
a

Reported frequencies were calculated as follows:

None, N (tested but no responses were detected in SARS-CoV-2-positive individuals); Low, L (>0%, <33% of responses detected in SARS-CoV-2-positive individuals); High, H (>33% of responses detected in SARS-CoV-2-positive individuals).

b

NA, not applicable.