User talk:2406:3400:502:6070:19D:AF7D:F5AD:C9C5

The comment about this being the rarest disease in the world is essentially meaningless, out of date and probably wrong. With ~30k genes, 8000 known mendelian conditions and new disease genes being reported pretty much every other day (with the advent of next generation sequencing), combined with the stochastic nature of single nucleotide variants, means that it is likely that there are numerous disorders in which only a single living person on the planet has that particular disorder. I would suggest removing it.