Karfan er tóm.
Meðfæddur hjartavöðvakvilli. Einkenni eru m.a. ofstækkun á hjartavöðva og vöðvaslappleiki.
https://rarediseases.info.nih.gov/diseases/1142/sengers-syndrome
https://content.iospress.com/articles/translational-science-of-rare-diseases/trd020
