Sung-Eun Lee1, Jee Hyun Kong2, Soo-Hyun Kim3, Eun-Jung Jang3, Nack-Gyun Chung4, Bin Cho4, Suk Joong Oh5, Hae-Eok Jung6, Ho-Joong Youn6, Woo-Baek Chung6, Dong-Wook Kim1,3. 1. Department of Hematology, Catholic Hematology Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea. 2. Division of Hematology, Department of Internal Medicine, Wonju Christian Hospital, Yonsei University College of Medicine, Wonju, South Korea. 3. Leukemia Research Institute, The Catholic University of Korea, Seoul, South Korea. 4. Department of Pediatrics, Catholic Hematology Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea. 5. Department of Hematology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea. 6. Division of Cardiology, College of Medicine, The Catholic University of Korea, Seoul, South Korea.
Abstract
BACKGROUND: We investigated the feasibility of the clinical application of non-invasive transthoracic echocardiography for diagnosis of pulmonary arterial hypertension induced by dasatinib (D-PAH) in chronic myeloid leukemia (CML). METHODS: A total of 451 CML patients who were examined by 2D-echocardiography at least once at baseline and/or during dasatinib therapy as frontline (n = 196) and subsequent line (n = 255) therapies were included in this study. D-PAH was defined as right ventricular systolic pressure (RVSP) >40 mm Hg with relevant symptoms and the absence of other specific etiologies. RESULTS: A total of 847 echocardiographies were performed including at baseline (n = 255) and during dasatinib treatment (n = 592). During the median of 36.2 (0.1-181.8) months of dasatinib therapy, the level of RVSP gradually increased (Spearman's r = 0.2819, p < 0.001) and the mean RVSP was significantly increased after taking dasatinib therapy compared with baseline. During dasatinib therapy, 56 (12.4%) patients had RVSP >40 mm Hg without (asymptomatic, n = 27, 48.2%) or with symptoms (D-PAH, n = 29, 51.8%). All asymptomatic patients maintained dasatinib therapy without further symptoms and the D-PAH patients ultimately switched to other tyrosine kinase inhibitors. After dasatinib discontinuation, 13 (45%) and 15 (52%) patients showed RVSP normalization and gradual decrease, respectively. CONCLUSIONS: Our large cohort study demonstrated that the gradual increment of RVSP might be induced by dasatinib and non-invasive echocardiography can be fast way for early diagnosis as well as for monitoring of D-PAH.
BACKGROUND: We investigated the feasibility of the clinical application of non-invasive transthoracic echocardiography for diagnosis of pulmonary arterial hypertension induced by dasatinib (D-PAH) in chronic myeloid leukemia (CML). METHODS: A total of 451 CMLpatients who were examined by 2D-echocardiography at least once at baseline and/or during dasatinib therapy as frontline (n = 196) and subsequent line (n = 255) therapies were included in this study. D-PAH was defined as right ventricular systolic pressure (RVSP) >40 mm Hg with relevant symptoms and the absence of other specific etiologies. RESULTS: A total of 847 echocardiographies were performed including at baseline (n = 255) and during dasatinib treatment (n = 592). During the median of 36.2 (0.1-181.8) months of dasatinib therapy, the level of RVSP gradually increased (Spearman's r = 0.2819, p < 0.001) and the mean RVSP was significantly increased after taking dasatinib therapy compared with baseline. During dasatinib therapy, 56 (12.4%) patients had RVSP >40 mm Hg without (asymptomatic, n = 27, 48.2%) or with symptoms (D-PAH, n = 29, 51.8%). All asymptomatic patients maintained dasatinib therapy without further symptoms and the D-PAHpatients ultimately switched to other tyrosine kinase inhibitors. After dasatinib discontinuation, 13 (45%) and 15 (52%) patients showed RVSP normalization and gradual decrease, respectively. CONCLUSIONS: Our large cohort study demonstrated that the gradual increment of RVSP might be induced by dasatinib and non-invasive echocardiography can be fast way for early diagnosis as well as for monitoring of D-PAH.
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