Background:
The effectiveness and safety of macitentan, an endothelin-receptor antagonist (ERA) in the treatment of pulmonary arterial hypertension (PAH), has been demonstrated in numerous randomized clinical trials including SERAPHIN, focused on the reduction of morbidity and mortality.
Objectives:
Our aim was to demonstrate the clinical and echocardiographic progression using macitentan in Indian patients with PAH.
Settings and Design:
It was a retrospective study of 20 patients with multiple etiologies of PAH who had begun macitentan in routine clinical practice from a single center. There were 55% of patients with existing PAH therapies.
Subjects and Methods:
The World Health Organization functional class (WHO-FC), 6-min walking distance, N-terminal prohormone of brain natriuretic peptide level (NT-pro-BNP), and echocardiographic data such as tricuspid annular plane systolic excursion (TAPSE), systolic pulmonary artery pressure (sPAP), and the occurrence of pericardial effusion were collected at baseline and 12-month follow-up. The statistical analysis was performed using SPSS software.
Results:
Of the 20 PAH patients, 70% were women. The majority were in WHO FC II (50%), while 35% were in FC III and 15% were in FC IV. The mean age was 43.4 years at the start of the therapy with macitentan. After 6 months of macitentan therapy, 85% showed substantial improvement in their FC, each increased its 6-min walking distance test (
P
< 0.0001), and there was a significant reduction in plasma levels of NT-pro BNP (
P
< 0.0001). There has also been an improvement in echocardiographic parameters such as TAPSE and sPAP (
P
< 0.0001).
Conclusions:
Our findings indicate that macitentan has been well tolerated and beneficial in Indian patients with PAH and further, future research is required to verify these results.