The present invention is directed to polypeptides having the properties of both SP-C and SP-B surfactant proteins and to the corresponding reconstituted surfactants. The invention is also directed to the pharmaceutical compositions thereof and to their use for the treatment or prophylaxis of neonatal respiratory distress syndrome (RDS) or other respiratory disorders such as acute RDS.

The present invention is directed to polypeptides having the properties of both SP-C and SP-B surfactant proteins and to the corresponding reconstituted surfactants. The invention is also directed to the pharmaceutical compositions thereof and to their use for the treatment or prophylaxis of neonatal respiratory distress syndrome (RDS) or other respiratory disorders such as acute RDS.