PMID- 33103541 OWN - NLM STAT- MEDLINE DCOM- 20210326 LR - 20231110 IS - 2047-9980 (Electronic) IS - 2047-9980 (Linking) VI - 9 IP - 21 DP - 2020 Nov 3 TI - Identification of the Novel Variants in Patients With Chronic Thromboembolic Pulmonary Hypertension. PG - e015902 LID - 10.1161/JAHA.120.015902 [doi] LID - e015902 AB - Background Although chronic thromboembolic pulmonary hypertension (CTEPH) and acute pulmonary embolism (APE) share some clinical manifestations, a limited proportion of patients with CTEPH have a history of APE. Moreover, in histopathologic studies, it has been revealed that pulmonary vasculature lesions similar to pulmonary arterial hypertension existed in patients with CTEPH. Thus, it remains unknown whether these 3 disorders also share genetic backgrounds. Methods and Results Whole exome screening was performed with DNA isolated from 51 unrelated patients with CTEPH of Japanese ancestry. The frequency of genetic variants associated with pulmonary arterial hypertension or APE in patients with CTEPH was compared with those in the integrative Japanese Genome Variation Database 3.5KJPN. Whole exome screening analysis showed 17 049 nonsynonymous variants in patients with CTEPH. Although we found 6 nonsynonymous variants that are associated with APE in patients with CTEPH, there was no nonsynonymous variant associated with pulmonary arterial hypertension. Patients with CTEPH with a history of APE had nonsynonymous variants of F5, which encodes factor V. In contrast, patients with CTEPH without a history of APE had a nonsynonymous variant of THBD, which encodes thrombomodulin. Moreover, thrombin-activatable fibrinolysis inhibitor, which is one of the pathogenic proteins in CTEPH, was significantly more activated in those who had the variants of THBD compared with those without it. Conclusions These results provide the first evidence that patients with CTEPH have some variants associated with APE, regardless of the presence or absence of a history of APE. Furthermore, the variants might be different between patients with CTEPH with and without a history of APE. FAU - Yaoita, Nobuhiro AU - Yaoita N AD - Department of Cardiovascular Medicine Tohoku University Graduate School of Medicine Sendai Japan. FAU - Satoh, Kimio AU - Satoh K AD - Department of Cardiovascular Medicine Tohoku University Graduate School of Medicine Sendai Japan. FAU - Satoh, Taijyu AU - Satoh T AD - Department of Cardiovascular Medicine Tohoku University Graduate School of Medicine Sendai Japan. FAU - Shimizu, Toru AU - Shimizu T AD - Department of Cardiovascular Medicine Tohoku University Graduate School of Medicine Sendai Japan. FAU - Saito, Sakae AU - Saito S AD - Department of Integrative Genomics Tohoku Medical Megabank Organization Tohoku University Sendai Japan. FAU - Sugimura, Koichiro AU - Sugimura K AD - Department of Cardiovascular Medicine Tohoku University Graduate School of Medicine Sendai Japan. FAU - Tatebe, Shunsuke AU - Tatebe S AD - Department of Cardiovascular Medicine Tohoku University Graduate School of Medicine Sendai Japan. FAU - Yamamoto, Saori AU - Yamamoto S AD - Department of Cardiovascular Medicine Tohoku University Graduate School of Medicine Sendai Japan. FAU - Aoki, Tatsuo AU - Aoki T AD - Department of Cardiovascular Medicine Tohoku University Graduate School of Medicine Sendai Japan. FAU - Kikuchi, Nobuhiro AU - Kikuchi N AD - Department of Cardiovascular Medicine Tohoku University Graduate School of Medicine Sendai Japan. FAU - Kurosawa, Ryo AU - Kurosawa R AD - Department of Cardiovascular Medicine Tohoku University Graduate School of Medicine Sendai Japan. FAU - Miyata, Satoshi AU - Miyata S AD - Department of Cardiovascular Medicine Tohoku University Graduate School of Medicine Sendai Japan. FAU - Nagasaki, Masao AU - Nagasaki M AD - Department of Integrative Genomics Tohoku Medical Megabank Organization Tohoku University Sendai Japan. FAU - Yasuda, Jun AU - Yasuda J AD - Department of Integrative Genomics Tohoku Medical Megabank Organization Tohoku University Sendai Japan. FAU - Shimokawa, Hiroaki AU - Shimokawa H AD - Department of Cardiovascular Medicine Tohoku University Graduate School of Medicine Sendai Japan. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20201024 PL - England TA - J Am Heart Assoc JT - Journal of the American Heart Association JID - 101580524 RN - 0 (THBD protein, human) RN - 0 (Thrombomodulin) RN - 9001-24-5 (Factor V) RN - EC 3.4.17.20 (CPB2 protein, human) RN - EC 3.4.17.20 (Carboxypeptidase B2) SB - IM MH - Acute Disease MH - Aged MH - Aged, 80 and over MH - Asian People/*genetics MH - Carboxypeptidase B2/genetics MH - Chronic Disease MH - Factor V/genetics MH - Female MH - Gene Frequency/genetics MH - Genetic Variation/*genetics MH - Humans MH - Hypertension, Pulmonary/*complications/*genetics MH - Japan MH - Male MH - Middle Aged MH - Pulmonary Embolism/*complications/*genetics MH - Thrombomodulin/genetics MH - Exome Sequencing PMC - PMC7763425 OTO - NOTNLM OT - chronic thromboembolic pulmonary hypertension OT - gene variants OT - pulmonary hypertension COIS- None. EDAT- 2020/10/27 06:00 MHDA- 2021/03/27 06:00 PMCR- 2020/11/03 CRDT- 2020/10/26 08:42 PHST- 2020/10/27 06:00 [pubmed] PHST- 2021/03/27 06:00 [medline] PHST- 2020/10/26 08:42 [entrez] PHST- 2020/11/03 00:00 [pmc-release] AID - JAH35583 [pii] AID - 10.1161/JAHA.120.015902 [doi] PST - ppublish SO - J Am Heart Assoc. 2020 Nov 3;9(21):e015902. doi: 10.1161/JAHA.120.015902. Epub 2020 Oct 24.