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New Pharmacotherapies for Pulmonary Hypertension: Where Do They Fit in?

  • Pulmonary Hypertension (N Hill, Section Editor)
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Abstract

Pulmonary arterial hypertension (PAH) is a rare, progressively worsening disease characterized by dysfunction among endothelial and smooth muscle cells within the pulmonary vasculature with a resultant increase in pulmonary vascular resistance, right ventricular maladaptation and failure, and ultimately early death. The three major therapeutic classes of medications available to treat PAH act as either prostacyclin analogs or endothelin receptor antagonists (ERAs) or by increasing local nitric oxide (NO) levels by means of phosphodiesterase type 5 inhibitors. Several recent trials have investigated the use of oral prostanoid therapy, next-generation ERAs, and soluble guanylate cyclase stimulators (to increase NO levels) as well as novel formulations of pre-existing therapies. The goal of this manuscript is to briefly review established therapies and then discuss recent developments and practical considerations in each of the major drug classes.

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References

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  1. Farber HW, Loscalzo J. Pulmonary arterial hypertension. N Engl J Med. 2004;351:1655–65.

    Article  CAS  PubMed  Google Scholar 

  2. Waxman AB, Zamanian RT. Pulmonary arterial hypertension: new insights into the optimal role of current and emerging prostacyclin therapies. Am. J. Cardiol. 2013;111:1A–16A; quiz 17A–19A.

  3. Barst RJ, Rubin LJ, Long WA, McGoon MD, Rich S, Badesch DB, et al. A comparison of continuous intravenous epoprostenol (prostacyclin) with conventional therapy for primary pulmonary hypertension. N Engl J Med. 1996;334:296–301.

    Article  CAS  PubMed  Google Scholar 

  4. Sitbon O, Humbert M, Nunes H, Parent F, Garcia G, Hervé P, et al. Long-term intravenous epoprostenol infusion in primary pulmonary hypertension: prognostic factors and survival. J Am Coll Cardiol. 2002;40:780–8.

    Article  CAS  PubMed  Google Scholar 

  5. McLaughlin VV, Shillington A, Rich S. Survival in primary pulmonary hypertension the impact of epoprostenol therapy. Circulation. 2002;106:1477–82.

    Article  CAS  PubMed  Google Scholar 

  6. Agarwal R, Gomberg-Maitland M. Current therapeutics and practical management strategies for pulmonary arterial hypertension. Am Heart J. 2011;162:201–13.

    Article  CAS  PubMed  Google Scholar 

  7. Chin KM, Badesch DB, Robbins IM, Tapson VF, Palevsky HI, Kim NH, et al. Two formulations of epoprostenol sodium in the treatment of pulmonary arterial hypertension: EPITOME-1 (epoprostenol for injection in pulmonary arterial hypertension), a phase IV, open-label, randomized study. Am Heart J. 2014;167:218–225.e1.

    Article  CAS  PubMed  Google Scholar 

  8. Sitbon O, Delcroix M, Bergot E, Boonstra AB, Granton J, Langleben D, et al. EPITOME-2: an open-label study assessing the transition to a new formulation of intravenous epoprostenol in patients with pulmonary arterial hypertension. Am Heart J. 2014;167:210–7.

    Article  CAS  PubMed  Google Scholar 

  9. Tamura Y, Ono T, Fukuda K, Satoh T, Sasayama S. Evaluation of a new formulation of epoprostenol sodium in Japanese patients with pulmonary arterial hypertension (EPITOME4). Adv Ther. 2013;30:459–71. The Epitome-1, 2, and 4 trials demonstrate that Veletri is similar in efficacy and safety when compared to Flolan and has higher treatment satisfaction. These studies may motivate providers to transition patients from Flolan, one of the most established treatments in PAH, to Veletri.

    Article  CAS  PubMed Central  PubMed  Google Scholar 

  10. Simonneau G, Barst RJ, Galie N, Naeije R, Rich S, Bourge RC, et al. Continuous subcutaneous infusion of treprostinil, a prostacyclin analogue, in patients with pulmonary arterial hypertension: a double-blind, randomized, placebo-controlled trial. Am J Respir Crit Care Med. 2002;165:800–4.

    Article  PubMed  Google Scholar 

  11. Barst RJ, Galie N, Naeije R, Simonneau G, Jeffs R, Arneson C, et al. Long-term outcome in pulmonary arterial hypertension patients treated with subcutaneous treprostinil. Eur Respir J. 2006;28:1195–203.

    Article  CAS  PubMed  Google Scholar 

  12. Minai OA, Parambil J, Dweik RA, Davila GH, Peterson L, Rollins KD, et al. Impact of switching from epoprostenol to IV treprostinil on treatment satisfaction and quality of life in patients with pulmonary hypertension. Respir Med. 2013;107:458–65.

    Article  CAS  PubMed  Google Scholar 

  13. Gomberg-Maitland M, Tapson VF, Benza RL, McLaughlin VV, Krichman A, Widlitz AC, et al. Transition from intravenous epoprostenol to intravenous treprostinil in pulmonary hypertension. Am J Respir Crit Care Med. 2005;172:1586–9.

    Article  PubMed  Google Scholar 

  14. Sitbon O, Manes A, Jais X, Pallazini M, Humbert M, Presotto L, et al. Rapid switch from intravenous epoprostenol to intravenous treprostinil in patients with pulmonary arterial hypertension. J Cardiovasc Pharmacol. 2007;49:1–5.

    Article  CAS  PubMed  Google Scholar 

  15. Tapson VF, Gomberg-Maitland M, McLaughlin VV, Benza RL, Widlitz AC, Krichman A, et al. Safety and efficacy of IV treprostinil for pulmonary arterial hypertension: a prospective, multicenter, open-label, 12-week trial. Chest J. 2006;129:683–8.

    Article  CAS  Google Scholar 

  16. Hiremath J, Thanikachalam S, Parikh K, Shanmugasundaram S, Bangera S, Shapiro L, et al. Exercise improvement and plasma biomarker changes with intravenous treprostinil therapy for pulmonary arterial hypertension: a placebo-controlled trial. J Heart Lung Transplant. 2010;29:137–49.

    Article  PubMed  Google Scholar 

  17. McLaughlin VV, Benza RL, Rubin LJ, Channick RN, Voswinckel R, Tapson VF, et al. Addition of inhaled treprostinil to oral therapy for pulmonary arterial hypertension: a randomized controlled clinical trial. J Am Coll Cardiol. 2010;55:1915–22.

    Article  CAS  PubMed  Google Scholar 

  18. Olschewski H, Simonneau G, Galiè N, Higenbottam T, Naeije R, Rubin LJ, et al. Inhaled iloprost for severe pulmonary hypertension. N Engl J Med. 2002;347:322–9.

    Article  CAS  PubMed  Google Scholar 

  19. Opitz CF, Wensel R, Winkler J, Halank M, Bruch L, Kleber F-X, et al. Clinical efficacy and survival with first-line inhaled iloprost therapy in patients with idiopathic pulmonary arterial hypertension. Eur Heart J. 2005;26:1895–902.

    Article  CAS  PubMed  Google Scholar 

  20. Wu Y, O’Callaghan DS, Humbert M. An update on medical therapy for pulmonary arterial hypertension. Curr Hypertens Rep. 2013;15:614–22.

    Article  CAS  PubMed  Google Scholar 

  21. Galiè N, Humbert M, Vachiéry J-L, Vizza CD, Kneussl M, Manes A, et al. Effects of beraprost sodium, an oral prostacyclin analogue, in patients with pulmonary arterial hypertension: a randomized, double-blind, placebo-controlled trial. J Am Coll Cardiol. 2002;39:1496–502.

    Article  PubMed  Google Scholar 

  22. Barst RJ, McGoon M, McLaughlin V, Tapson V, Rich S, Rubin L, et al. Beraprost therapy for pulmonary arterial hypertension. J Am Coll Cardiol. 2003;41:2119–25.

    Article  CAS  PubMed  Google Scholar 

  23. Jing Z-C, Parikh K, Pulido T, Jerjes-Sanchez C, White RJ, Allen R, et al. Efficacy and safety of oral treprostinil monotherapy for the treatment of pulmonary arterial hypertension: a randomized, controlled trial. Circulation. 2013;127:624–33. This trial demonstrated a modest but significant improvement in 6MWD, its primary endpoint. Additional trials are currently underway to assess the efficacy of oral treprostinil when used in combination with other agents.

    Article  CAS  PubMed  Google Scholar 

  24. Tapson VF, Torres F, Kermeen F, Keogh AM, Allen RP, Frantz RP, et al. Oral treprostinil for the treatment of pulmonary arterial hypertension in patients on background endothelin receptor antagonist and/or phosphodiesterase type 5 inhibitor therapy (the FREEDOM-C study): a randomized controlled trial. Chest. 2012;142:1383–90.

    Article  CAS  PubMed  Google Scholar 

  25. Tapson VF, Jing Z-C, Xu K-F, Pan L, Feldman J, Kiely DG, et al. Oral treprostinil for the treatment of pulmonary arterial hypertension in patients receiving background endothelin receptor antagonist and phosphodiesterase type 5 inhibitor therapy (the FREEDOM-C2 study): a randomized controlled trial. Chest. 2013;144:952–8.

    Article  CAS  PubMed  Google Scholar 

  26. Simonneau G, Torbicki A, Hoeper MM, Delcroix M, Karlócai K, Galiè N, et al. Selexipag: an oral, selective prostacyclin receptor agonist for the treatment of pulmonary arterial hypertension. Eur Respir J. 2012;40:874–80. This small, phase II trial demonstrated the efficacy and safety of oral selexipag and motivated the larger phase III GRIPHON trial that has recently been completed and still awaits publication. Preliminary results show that the primary endpoint was met, which may lead to an FDA approval and potentially a new popular therapeutic option.

    Article  CAS  PubMed  Google Scholar 

  27. Selexipag meets primary endpoint in pivotal phase III GRIPHON outcome study in patients with pulmonary arterial hypertension <ATLN.VX>. Reuters [Internet]. 2014 Jun 15 [cited 2014 Jul 10]; Available from: http://www.reuters.com/article/2014/06/15/idUSnHUGn8QMsa+1cc+ONE20140615.

  28. Yanagisawa M, Kurihara H, Kimura S, Tomobe Y, Kobayashi M, Mitsui Y, et al. A novel potent vasoconstrictor peptide produced by vascular endothelial cells. Nature. 1988;332:411–5.

    Article  CAS  PubMed  Google Scholar 

  29. Giaid A, Yanagisawa M, Langleben D, Michel RP, Levy R, Shennib H, et al. Expression of endothelin-1 in the lungs of patients with pulmonary hypertension. N Engl J Med. 1993;328:1732–9.

    Article  CAS  PubMed  Google Scholar 

  30. Rubens C, Ewert R, Halank M, Wensel R, Orzechowski H-D, Schultheiss H-P, et al. Big endothelin-1 and endothelin-1 plasma levels are correlated with the severity of primary pulmonary hypertension*. Chest J. 2001;120:1562–9.

    Article  CAS  Google Scholar 

  31. Channick RN, Simonneau G, Sitbon O, Robbins IM, Frost A, Tapson VF, et al. Effects of the dual endothelin-receptor antagonist bosentan in patients with pulmonary hypertension: a randomised placebo-controlled study. Lancet. 2001;358:1119–23.

    Article  CAS  PubMed  Google Scholar 

  32. Galiè N, Rubin L, Hoeper M, Jansa P, Al-Hiti H, Meyer G, et al. Treatment of patients with mildly symptomatic pulmonary arterial hypertension with bosentan (EARLY study): a double-blind, randomised controlled trial. Lancet. 2008;371:2093–100.

    Article  PubMed  Google Scholar 

  33. McLaughlin VV, Sitbon O, Badesch DB, Barst RJ, Black C, Galiè N, et al. Survival with first-line bosentan in patients with primary pulmonary hypertension. Eur Respir J. 2005;25:244–9.

    Article  CAS  PubMed  Google Scholar 

  34. Humbert M, Segal ES, Kiely DG, Carlsen J, Schwierin B, Hoeper MM. Results of European post-marketing surveillance of bosentan in pulmonary hypertension. Eur Respir J. 2007;30:338–44.

    Article  CAS  PubMed  Google Scholar 

  35. Commissioner O of the Safety Information—Tracleer (bosentan) tablets [Internet]. [cited 2014 Jul 16]. Available from: http://www.fda.gov/Safety/MedWatch/SafetyInformation/ucm327930.htm.

  36. Ben-Yehuda O, Pizzuti D, Brown A, Littman M, Gillies H, Henig N, et al. Long-term hepatic safety of ambrisentan in patients with pulmonary arterial hypertension. J Am Coll Cardiol. 2012;60:80–1.

    Article  CAS  PubMed  Google Scholar 

  37. Galiè N, Olschewski H, Oudiz RJ, Torres F, Frost A, Ghofrani HA, et al. Ambrisentan for the treatment of pulmonary arterial hypertension results of the ambrisentan in pulmonary arterial hypertension, randomized, double-blind, placebo-controlled, multicenter, efficacy (ARIES) study 1 and 2. Circulation. 2008;117:3010–9.

    Article  PubMed  Google Scholar 

  38. Pulido T, Adzerikho I, Channick RN, Delcroix M, Galiè N, Ghofrani H-A, et al. Macitentan and morbidity and mortality in pulmonary arterial hypertension. N Engl J Med. 2013;369:809–18. A landmark trial that used morbidity and mortality as a composite primary endpoint. The results led to the approval of macitentan.

    Article  CAS  PubMed  Google Scholar 

  39. Galiè N, Ghofrani HA, Torbicki A, Barst RJ, Rubin LJ, Badesch D, et al. Sildenafil citrate therapy for pulmonary arterial hypertension. N Engl J Med. 2005;353:2148–57.

    Article  PubMed  Google Scholar 

  40. Rubin LJ, Badesch DB, Fleming TR, Galiè N, Simonneau G, Ghofrani HA, et al. Long-term treatment with sildenafil citrate in pulmonary arterial hypertension: the super-2 study. Chest J. 2011;140:1274–83.

    Article  CAS  Google Scholar 

  41. Galiè N, Brundage BH, Ghofrani HA, Oudiz RJ, Simonneau G, Safdar Z, et al. Tadalafil therapy for pulmonary arterial hypertension. Circulation. 2009;119:2894–903.

    Article  PubMed  Google Scholar 

  42. Lang M, Kojonazarov B, Tian X, Kalymbetov A, Weissmann N, Grimminger F, et al. The soluble guanylate cyclase stimulator riociguat ameliorates pulmonary hypertension induced by hypoxia and SU5416 in rats. PLoS One. 2012;7:e43433.

    Article  CAS  PubMed Central  PubMed  Google Scholar 

  43. Ghofrani H-A, Galiè N, Grimminger F, Grünig E, Humbert M, Jing Z-C, et al. Riociguat for the treatment of pulmonary arterial hypertension. N Engl J Med. 2013;369:330–40.

    Article  CAS  PubMed  Google Scholar 

  44. Ghofrani H-A, D’Armini AM, Grimminger F, Hoeper MM, Jansa P, Kim NH, et al. Riociguat for the treatment of chronic thromboembolic pulmonary hypertension. N Engl J Med. 2013;369:319–29. The above two trials by Ghofrani et al. demonstrated the efficacy of Riociguat, a therapy in a novel class, in both PAH and CTEPH. It is the only therapy approved by the FDA for the treatment of inoperable CTEPH.

    Article  CAS  PubMed  Google Scholar 

  45. Jing Z-C, Yu Z-X, Shen J-Y, Wu B-X, Xu K-F, Zhu X-Y, et al. Vardenafil in pulmonary arterial hypertension: a randomized, double-blind, placebo-controlled study. Am J Respir Crit Care Med. 2011;183:1723–9. This small study demonstrated the efficacy of Vardenafil. Additional studies are needed to demonstrate if Vardenafil is more efficacious than existing PDE-5 inhibitors.

    Article  CAS  PubMed  Google Scholar 

  46. Fan Y-F, Zhang R, Jiang X, Wen L, Wu D-C, Liu D, et al. The phosphodiesterase-5 inhibitor vardenafil reduces oxidative stress while reversing pulmonary arterial hypertension. Cardiovasc Res. 2013;99:395–403.

    Article  CAS  PubMed  Google Scholar 

  47. Nazzareno Galie, Dieter Neuser, Katharina Muller, Andrea-Viviana Scalise, Ekkehard Grunig. A placebo-controlled, double-blind phase ii interaction study to evaluate blood pressure following addition of riociguat to patients with symptomatic pulmonary arterial hypertension (pah) receiving sildenafil (PATENT PLUS). B98 Clin. TRIALS Pulm. Hypertens. [Internet]. American Thoracic Society; 2013 [cited 2014 Jul 22]. p. A3530–A3530. Available from: http://www.atsjournals.org/doi/abs/10.1164/ajrccm-conference.2013.187.1_MeetingAbstracts.A3530.

  48. Taichman DB, Ornelas J, Chung L, Klinger J, Lewis S, Mandel J, et al. Pharmacological therapy for pulmonary arterial hypertension in adults: CHEST guideline. CHEST J. [Internet]. 2014 [cited 2014 Jul 25]; Available from: doi:10.1378/chest.14-0793.

  49. Galié N, Corris PA, Frost A, Girgis RE, Granton J, Jing ZC, et al. Updated treatment algorithm of pulmonary arterial hypertension. J. Am. Coll. Cardiol. [Internet]. 2013 [cited 2014 Jul 25];62. Available from: doi:10.1016/j.jacc.2013.10.031.

  50. Galié N, Manes A. New treatment strategies for pulmonary arterial hypertension hopes or hypes? J Am Coll Cardiol. 2013;62:1101–2.

    Article  PubMed  Google Scholar 

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Conflict of Interest

Aaron M. Wolfson and Nathaniel Steiger declare no conflict of interest. Mardi Gomberg-Maitland has received funding for clinical trials from Actelion, Gilead, Medtronic, Novartis, Lung Biotechnology, Reata, and Ventripoint; she has served as a consultant for Actelion, Bayer, Gilead, Medtronic, Merck, Bellerophon, and United Therapeutics; she has received honoraria for CME from Medscape and ABComm.

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This article does not contain any studies with human or animal subjects performed by any of the authors.

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Correspondence to Mardi Gomberg-Maitland.

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This article is part of the Topical Collection on Pulmonary Hypertension

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Wolfson, A.M., Steiger, N. & Gomberg-Maitland, M. New Pharmacotherapies for Pulmonary Hypertension: Where Do They Fit in?. Curr Hypertens Rep 16, 496 (2014). https://doi.org/10.1007/s11906-014-0496-y

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