Denne score var baseret på ranksummen af ændringen fra baseline til forsøgets afslutning i den tilbagelagte gådistance i 6 minutter (6- minute walk test eller 6MWT) som en måling af udholdenhed og på procentdelen af forventet forced vital capacity (FVC) som en måling af lungefunktion.
The primary efficacy endpoint was a two-component composite score based on the sum of the ranks of the change from baseline to the end of the study in the distance walked during six minutes (6-minute walk test or 6MWT) as a measure of endurance, and% predicted forced vital capacity (FVC) as a measure of pulmonary function.