Biotech Values

[biomaven0]

First, to be classified as a SNP, the change must be present in at least one percent of the general population. No known disease-causing mutation is this common

Looks like that statement needs an asterisk based on your observation.

Sickle cell is kind of sui generis though. It's clearly called a mutation rather than a SNP in common practice though, even though it literally is a single nucleotide polymorphism and is common in one population.

Peter