Of these 29 patients, only 2 patients receiving placebo and 1 pat

Of these 29 patients, only 2 patients receiving placebo and 1 patient receiving omecamtiv mecarbil in cohort 2 had ≥1-mm ST-segment depression CX-5461 during ETT3.

In the 1 patient taking omecamtiv mecarbil, time to the onset of 1-mm ST-segment depression during ETT3 (235 s) was somewhat shorter than ETT2 (311 s), which was new compared with ETT1 when the patient did not have ST-segment depression. Nineteen patients (20.2%) experienced 29 distinct treatment-emergent AEs (Table 3), including 17.2% on placebo, a 6.5% on omecamtiv mecarbil in cohort 1, and 35.3% on omecamtiv mecarbil in cohort 2. Of the 29 distinct AEs, 23 events were reported as mild in severity, 4 as moderate, and 2 as serious/severe (both occurring in the same patient [as discussed in the following section]). The investigators assessed 14 of the 29 AEs as not related to treatment, 8 of the 29 as possibly related to treatment, and 7 of the 29 as probably related to treatment. The majority of the AEs occurred during the infusion phase; in the oral dosing phase, only 4 AEs were reported (2 in patients on placebo and 2 in patients on

omecamtiv mecarbil). Although AEs were more frequent in cohort 2 for patients on omecamtiv mecarbil, in all but 2 patients they were mild in severity (1 patient with moderate photopsia and 1 patient described in the following section in more detail) and there was no consistent pattern in the types of AEs reported (Table 3, Online Table S4). All AEs had resolved by the end of the study. Two SAEs were reported selleck in 1 patient receiving omecamtiv mecarbil in cohort 2. After tolerating 18 h of omecamtiv mecarbil infusion without issue, in the last 2 hs of the infusion, the

patient underwent his third exercise test. He terminated ETT3 because of intolerable angina and ST-segment depression, which he also experienced during ETT2. The patient received nitroglycerin during the recovery period of ETT3, during which his symptoms resolved; he subsequently underwent coronary stent implantation for a severe proximal lesion in the left Y-27632 datasheet anterior descending artery. After stent implantation, the patient had a peak troponin I level of 2.45 ng/ml. The maximum plasma concentration of omecamtiv mecarbil for this patient was 651 ng/ml. The investigator reported SAEs of acute coronary syndrome and non–Q-wave myocardial infarction associated with percutaneous transluminal coronary angioplasty. The patient was discontinued from the study. No clinically meaningful changes in vital signs (systolic blood pressure/diastolic blood pressure, heart rate, respiratory rate, and oxygen saturation) or cardiac enzymes (troponin I, CPK-MB, and total creatine kinase) for any of the treatment groups were observed. Systolic blood pressure and heart rate data throughout the study are shown in Online Tables S5 and S6.

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