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Riociguat · Adempas

Small molecule

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Reliablesignal

Evidence outlook · lead readout

CHEST-1 (NCT00855465) · Pulmonary Hypertension

The completed lead evidence has the design features that historically survive confirmatory trials: randomized, controlled, and adequately powered against a prespecified clinically accepted endpoint.

CHEST-1 (NCT00855465): In this triple-blind, randomized trial, 262 participants received riociguat or matching placebo. The primary clinical endpoint, change in 6-minute walking distance at week 16, was significantly better with riociguat: 38.9 meters versus −5.5 meters with placebo, with p<0.0001.

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Competitive landscape

65 competitors in this universe: 1 direct rival (same mechanism and indication), 4 same-class, 60 same-indication; 9 further along in development.

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DrugStageModalityMechanismEvidence signalReported efficacygraded featured trials
Riociguat (Adempas): this drugPhase 3Small moleculeSoluble guanylate cyclase
BAY3283142Phase 2Small moleculeSoluble guanylate cyclase
Vericiguat (Verquvo)ApprovedSmall moleculeSoluble guanylate cyclase
MosliciguatPhase 3Small moleculeSoluble guanylate cyclase
PraliciguatPhase 2Small moleculeSoluble guanylate cyclase
SK-08Phase 1Small moleculeSoluble guanylate cyclase
Aprocitentan (Tryvio)ApprovedSmall moleculeEndothelin receptor (ETA/ETB, dual)
Baxdrostat (Baxfendy)ApprovedSmall moleculeAldosterone synthase (CYP11B2)
Bosentan (Tracleer)ApprovedSmall moleculeEndothelin receptor (ETA/ETB, dual)
Epoprostenol (Flolan)ApprovedSmall moleculeIP receptor (prostacyclin pathway)
Nitric Oxide (INOmax)ApprovedGas (inhaled)Nitric oxide
Sacubitril / Valsartan (Entresto)ApprovedSmall moleculeNeprilysin + Angiotensin II receptor (dual)
Treprostinil (Orenitram / Remodulin / Tyvaso)ApprovedSmall moleculeIP receptor (prostacyclin pathway)
Treprostinil (Yutrepia, Liquidia)ApprovedSmall moleculeIP receptor (prostacyclin pathway)
AD-209Phase 3Small moleculeAngiotensin II type 1 receptor / L-type calcium channel / Na-Cl cotransporter
AGSAVIPhase 3Small moleculeAngiotensin II receptor / Calcium channel / Thiazide-like diuretic

…and 50 more. Research shows the complete landscape.

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Research adds each competitor's evidence grade and sourced trial results, aligned per race, so you can see who actually has the data.

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Upcoming events

(2 total)

Estimated primary-completion dates from ClinicalTrials.gov. These are registry estimates, never confirmed readout dates; they can move as trials progress.

2028 (1)
January 2028 (1)
Phase 4Pulmonary Arterial HypertensionActive not recruiting
Est. primary completion 2028-01 · NCT05825417 · CT.gov ↗
What to watch
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2031 (1)
January 2031 (1)
Phase 3HypertensionNot yet recruiting
Est. primary completion 2031-01-31 · NCT07644377 · CT.gov ↗
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See the full readout calendar ↗

All registered studies

Every ClinicalTrials.gov study of this drug's own program, grouped by indication and phase. Research unlocks the studies themselves: titles, statuses, dates and featured-trial cross-links.

Phase 3 (9)
Phase 2 (21)
Phase 1 (15)
Phase 4 (9)
Early phase / not applicable (3)
Used as active comparator (2)