How much of the population is affected by OFD?
Oral-facial-digital syndrome comes in several different forms, type I being the least common.Type I OFDS are estimated to occur in 1 in 50,000 to 1 in 250,000 births, while type II OFDS occur in 1 in 300,000 births. Only a few individuals or families have reported experiencing certain other forms of OFDS.