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XBB.1.5 with Orf8:V62L in Europe (226 seqs) #1700
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161 seqs now. |
This lineage seems to be the fastest among all XBB.1.5* sublineages. Only slower than XBB.1.9* XBB.1.11* XBB.1.16* and XBL. |
226 seqs now, still the fastest among XBB.1.5 sublineages. |
@aviczhl2 update the title when new sequences come in please! And add your new very useful collection link to easily check its growth: https://cov-spectrum.org/collections/155 (Spike only sequences are missassigned as XBB.1.11.1 you have to add C13968A, G16377A to the query to see real XBB.1.11.1) |
264 on Gisaid 267 on Usher: |
Still fascinating how that mut will still show growth adv after that orf8:G8* stop codon, thought anything after that would be redundant but it seems not. Is it a 'special feature' to, let's say, XBB.1.5 only or orf8 gernally, or has any kind of things happened before? Sorry if that's a silly question. |
it is not silly at all. @ryhisner did you look at orf8 mutations coming after the stop codon? do they create something interesting? |
If the ORF8 mutations are right at the end (ie ~aa120 region) they could influencing the efficiency of the downstream N TRS-B sequence through extended homology. Not sure about in other regions though |
Yes, this is very mysterious. |
There is also chance that this is a statistical issue like Simpson paradox, that this does not have real growth advantage but just happen to : 1: a "transition" from an under-sampled region to a region with high sample frequency. 2: Sudden change of sample frequency in some region. (If a country samples 10 on Jan. while samples 10,000 on Feb., all viruses circulating in that country will automatically have an additional 1000X growth advantage ) 3: "Carriage Effect", if XBB.1.5 is growing more quickly in Germany than in other parts of the world, then all its sub-branches will have a global growth advantage due to being 'carried' by the quick growth of the main-branch. (I think under this situation, main lineages of that country shall also be designated, as this may also apply to different regions within the same country, or different communities within the same region and under the latter two circumstances we absolutely designate those lineages) The difference between 2 and 3 is that 3 shows real viral infection, while 2 is simply a heuristic statistical effect. Did Germany, or any region inside Germany, suddenly changes its sample frequency on some time point? |
This is a branch just like any other, maybe common to Germany but that's it. Hence should not be designated unless there are other reasons than discussed previously. I'll also change the title to delete the growth advantage as it's misleading. |
I'll close this for now as it's nothing special - maybe it will get designated as part of a systematic XBB.1.5 sublineage designatathon |
Sub-lineage of :XBB.1.5
Earliest sequence: 2022.12.14(Germany) EPI_ISL_16330495
Most Recent sequence: 2023.2.20 (Germany) EPI_ISL_17006729
GISAID query: NS8_V62L,Spike_V83A, Spike_F486P, Spike_F490S,C5770T,C15279T
No. of seqs: 145 (87 Germany, 2 Australia, 31 Austria, 21 Denmark, 1 France, 1 Japan, 1 Netherlands, 1 USA)
Mutations on top of XBB.1.5: C5770T,C15279T, G28077T(Orf8:V62L)
Genomes:
EPI_ISL_16280585, EPI_ISL_16330495, EPI_ISL_16588786,
EPI_ISL_16597588, EPI_ISL_16617435, EPI_ISL_16617520,
EPI_ISL_16638056, EPI_ISL_16682234, EPI_ISL_16682236,
EPI_ISL_16682240, EPI_ISL_16682242-16682243, EPI_ISL_16682285,
EPI_ISL_16694725, EPI_ISL_16695840, EPI_ISL_16697144,
EPI_ISL_16812004, EPI_ISL_16812128, EPI_ISL_16814427,
EPI_ISL_16831706, EPI_ISL_16856627, EPI_ISL_16857399,
EPI_ISL_16857836, EPI_ISL_16857951, EPI_ISL_16858184,
EPI_ISL_16881463, EPI_ISL_16882192, EPI_ISL_16882300-16882301,
EPI_ISL_16882449, EPI_ISL_16882496, EPI_ISL_16882508,
EPI_ISL_16882858, EPI_ISL_16883818-16883819, EPI_ISL_16883872,
EPI_ISL_16883890, EPI_ISL_16883901, EPI_ISL_16884703,
EPI_ISL_16885246, EPI_ISL_16885625, EPI_ISL_16886234,
EPI_ISL_16886434, EPI_ISL_16886452, EPI_ISL_16895231,
EPI_ISL_16907901, EPI_ISL_16908244, EPI_ISL_16909940-16909941,
EPI_ISL_16912337, EPI_ISL_16912425, EPI_ISL_16912461,
EPI_ISL_16912484, EPI_ISL_16912520, EPI_ISL_16912532,
EPI_ISL_16914159, EPI_ISL_16914164, EPI_ISL_16914188,
EPI_ISL_16938779, EPI_ISL_16938844, EPI_ISL_16938966,
EPI_ISL_16939014, EPI_ISL_16939945, EPI_ISL_16940445,
EPI_ISL_16940932, EPI_ISL_16940976, EPI_ISL_16941055,
EPI_ISL_16941095, EPI_ISL_16941228, EPI_ISL_16941252,
EPI_ISL_16941273, EPI_ISL_16941414, EPI_ISL_16941456,
EPI_ISL_16941516, EPI_ISL_16941566, EPI_ISL_16947389,
EPI_ISL_16947449, EPI_ISL_16951402, EPI_ISL_16970415,
EPI_ISL_16976905, EPI_ISL_16977044, EPI_ISL_16977048,
EPI_ISL_16985172, EPI_ISL_16985303, EPI_ISL_16985351,
EPI_ISL_16985354, EPI_ISL_16985401, EPI_ISL_16985427,
EPI_ISL_17002259, EPI_ISL_17002282, EPI_ISL_17002800,
EPI_ISL_17003185, EPI_ISL_17003426, EPI_ISL_17003432,
EPI_ISL_17003436, EPI_ISL_17004085, EPI_ISL_17004157,
EPI_ISL_17004565, EPI_ISL_17004605, EPI_ISL_17004624,
EPI_ISL_17004626, EPI_ISL_17004629, EPI_ISL_17005733,
EPI_ISL_17005756, EPI_ISL_17005815, EPI_ISL_17005845,
EPI_ISL_17005881, EPI_ISL_17005933, EPI_ISL_17006040,
EPI_ISL_17006047, EPI_ISL_17006271, EPI_ISL_17006295,
EPI_ISL_17006469, EPI_ISL_17006477, EPI_ISL_17006480,
EPI_ISL_17006486, EPI_ISL_17006596, EPI_ISL_17006605,
EPI_ISL_17006646, EPI_ISL_17006701, EPI_ISL_17006729,
EPI_ISL_17006750, EPI_ISL_17006756-17006757, EPI_ISL_17006765,
EPI_ISL_17006770, EPI_ISL_17006773, EPI_ISL_17006829,
EPI_ISL_17006840, EPI_ISL_17007656, EPI_ISL_17007695,
EPI_ISL_17007712, EPI_ISL_17007750, EPI_ISL_17017829,
EPI_ISL_17017839, EPI_ISL_17017896, EPI_ISL_17017940,
EPI_ISL_17018001, EPI_ISL_17018098, EPI_ISL_17018153,
EPI_ISL_17018317, EPI_ISL_17019852, EPI_ISL_17023740,
EPI_ISL_17025328, EPI_ISL_17029706
cov-spectrum comparison
It is showing very high growth advantage against XBB.1.5. Real growth advantage may not be that high but is likely to have some.
usher
Orf8:V62L is somehow analysed in papers back from 2021, showing it may cause immune escape.
Mutations in SARS-CoV-2 ORF8 Altered the Bonding Network With Interferon Regulatory Factor 3 to Evade Host Immune System
And this mutation is happening in many other lineages.
B.1.1.624 #91
Q.6 #183
BA.5.5.1 #873
BQ.1.1.60 #1426
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