The fifth world symposium on pulmonary hypertension will REVEAL the impact of registries.

O ne of the meanings of ‘‘reveal’’ is ‘‘to disclose through prophets’’. In the world of pulmonary arterial hypertension (PAH), REVEAL refers more modestly to the Registry to EValuate Early and Long-term PAH Disease Management [1–3]. In the current issue of the European Respiratory Review, two of the key contributors to this modern era registry have elegantly summarised their recent findings and future research plans [4].