Cédric Le Caignec and colleagues show that truncating mutations in the last exon of NOTCH2 cause Hajdu-Cheney syndrome, a rare disorder marked by facial anomalies, osteoporosis and multiple organ defects. The mutations are predicted to result in an increase in NOTCH2 signaling.
- Bertrand Isidor
- Pierre Lindenbaum
- Cédric Le Caignec