A DUE TRIAL

A DUE Is the First and Only
Phase 3 Clinical Trial of a
Single-Tablet Combination Therapy vs ERA or PDE5
Inhibitor Monotherapy for PAH WHO FC II-III1

Study design: Multinational, multicenter, double-blind, randomized, and active-controlled phase 3 study of a once-daily, single-tablet dual combination of macitentan 10 mg and tadalafil 40 mg. The primary endpoint was change from baseline in pulmonary vascular resistance at Week 16.2

Change in PVR at Week 16
(OPSYNVI® [n=70] vs macitentan
[n=35])2
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29%

REDUCTION

P<0.0001; 95% CL, 39%, 18%

Primary Endpoint | Ratio of Geometric Means 0.71; P<0.0001 (95% CL; 0.61-0.82)

Change in PVR at Week 16
(OPSYNVI® [n=86] vs tadalafil
[n=44])2
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28%

REDUCTION

P<0.0001; 95% CL, 36%, 20%

Primary Endpoint | Ratio of Geometric Means 0.72; P<0.0001 (95% CL; 0.64-0.80)

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Treatment with OPSYNVI® (macitentan/tadalafil) resulted in greater reductions in PVR compared with macitentan and tadalafil alone2

STUDY DESIGN

Patients were randomized into treatment arms depending on their treatment status at baseline1

Approval comparison chart
Approval comparison chart

Select inclusion criteria1:

  • mPAP ≥25 mmHg
  • PAWP or left ventricle end-diastolic pressure ≤15 mmHg
  • PVR ≥3 Woods units (ie, ≥240 dyn•s/cm5)
  • WHO FC II-III
  • PAH-specific treatment-naïve or on a stable dose of ERA or PDE5 inhibitor monotherapy for at least 3 months

BASELINE CHARACTERISTICS

Patient demographics at baseline (N=187)1,2

Treatment History

Treatment history chart
Treatment history chart

47%

Previously
treated

53%

Treatment
naïve

17%ERA
30%PDE5i

Etiology

Etiology chart
Etiology chart

35%

PAH-CTD

51%

Idiopathic
PAH

3%PAH-CHD
6%Other
5%Heritable
PAH

Mean Age

50

years (range 18-80)

Gender

78%

Female

22%

Male

WHO Functional Class

51%

FC II

49%

FC III

A DUE TITRATION

Titration used in A DUE trial1

The double-blind treatment period began with a 2-week tadalafil titration phase followed by a maintenance phase:

WEEK1
  • Patients received macitentan 10 mg once daily, tadalafil 20 mg once daily, or both as separate tablets, plus respective placebos
  • Patients who were receiving a stable dose of a PDE5 inhibitor at baseline did not require titration, and tadalafil 40 mg was administered
WEEK2
  • Tadalafil was up-titrated to 40 mg once daily
Maintenance
Phase
  • Started on Day 15
  • Patients received either OPSYNVI®, macitentan 10 mg once daily, or tadalafil 40 mg once daily, along with respective placebos depending on treatment arm

Prespecified stable doses were1:

40 mg

tadalafil
OR

60 mg to
120 mg

sildenafil
OR

10 mg

vardenafil
NOTE
Make sure patients are receiving a stable dose of PDE5i before transitioning directly to OPSYNVI® 10 mg/40 mg without titration.2

Review safety


and see how OPSYNVI® compares to monotherapy

CHD=congenital heart disease; CL=confidence limits; ERA=endothelin receptor antagonist; FC=Functional Class; HIV=human immunodeficiency virus; mPAP=mean pulmonary arterial pressure; PAH=pulmonary arterial hypertension; PAH-CHD=PAH associated with congenital heart disease; PAH-CTD=PAH associated with connective tissue disease; PAWP=pulmonary arterial wedge pressure; PDE5=phosphodiesterase type 5; PDE5i=phosphodiesterase type 5 inhibitor; PVR=pulmonary vascular resistance; WHO=World Health Organization.

References: 1.  Grünig E, Jansa P, Fan F, et al. Randomized trial of macitentan/tadalafil single-tablet combination therapy for pulmonary arterial hypertension.
J Am Coll Cardiol. 2024;83(4):473-484. 2. OPSYNVI® (macitentan/tadalafil) full Prescribing Information. Actelion Pharmaceuticals US, Inc. 3. Data on file. Actelion Pharmaceuticals US, Inc. Macitentan/tadalafil (M/T FDC), Pulmonary arterial hypertension, Protocol AC-077A301 A DUE, Version 6. April 27, 2021.