Result: In addition, the signature SNVs with high allelic association are typically located in distant regions, except for type IV signature SNVs
C17747T and
A17858G and the sub-VI SNVs (refer to the next section and.
Result: Two type IV signature SNVs,
C17747T and
A17858G, first coappeared in strain EPI_ISL_413456 in the United States on February 20, 2020, and the coefficient of allelic association is R2(
C17747T,
A17858G) = 0.973.