rs398122990

rs398122990 is a SNP in the coagulation factor IX F9 gene, in an intron just upstream of the fourth exon. The F9 gene is on the X chromosome. In 2009, researchers sequenced bones from the remains of the Nicholas II Romanov family, who were killed in 1918. This family harbored a form of hemophilia known as the “royal disease,” transmitted from Queen Victoria (1819–1901) to European royal families. The sequencing revealed the SNP responsible for their hemophilia, also known as hemophilia B or Christmas disease, to be rs398122990. To be specific, as an X-linked recessive disease, males (such as Prince Alexei) inheriting a rs398122990(G) allele and females inheriting two copies would be hemophiliacs, while rs398122990(A;G) females were unaffected carriers (as was Queen Victoria). On the suggestion of a Finnish researcher, in 2014 SNPedia submitted this SNP to dbSNP to have it assigned the rs-identifier you now see. It is currently unknown if this "royal disease" rs398122990(G) SNP is extinct world-wide, i.e. no longer present even in a single unaffected carrier somewhere in the world. If through the use of Promethease or other tools this allele, rs398122990(G), is identified in a human genome sequence derived from a living person, please contact us! This SNP is referred to as i5007022 by 23andMe.

A;G

You carry a form of hemophilia known as the “royal disease,” transmitted from Queen Victoria (1819–1901) to European royal families. It is currently unknown if this "royal disease" rs398122990(G) SNP is extinct world-wide, but if you're seeing this in your Promethease report, you may be the proof that the variant is not extinct. Please let info@snpedia.com know that you saw this in your report.

G;G

This SNP has been linked to royal families who ruled much of Europe. It is possible that this mutation is out there, but we will be surprised if anyone has 2 copies of it as you appear to. Please contact info@snpedia.com and help us investigate this variation that you carry.