Karfan er tóm.
Velocardiofacial syndrome er sjúkdómur/heilkenni sem er erfanlegt. Orsökin er öreyðing á litningi 22. Þessu getur fylgt: meðfæddir hjartasjúkdómar, ónæmissjúkdómar o.fl.
https://emedicine.medscape.com/article/892655-overview#:~:text=Velocardiofacial%20syndrome%20(VCFS)%20is%20a,described%20the%20syndrome%20in%201978.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2805186/
https://www.cincinnatichildrens.org/health/v/vcfs
