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Table 3 Change in Body Weight and Cardiovascular Parameters During Long-term Treatment With GXR

From: Safety and efficacy of guanfacine extended-release in adults with attention-deficit/hyperactivity disorder: an open-label, long-term, phase 3 extension study

Parameter

Patient population

Week 0 Mean (SD)

Mean (SD) change from week 0 at last observation in the treatment period

Body weight, kg

Former placebo patients

66.89 (15.1)

0.12 (2.8)

Former GXR patients

67.34 (12.7)

−0.34 (4.4)

New patients

68.40 (15.2)

−0.34 (3.4)

Pulse rate, bpm

Former placebo patients

73.56 (8.5)

−5.60 (12.4)

Former GXR patients

72.94 (11.7)

−5.48 (9.8)

New patients

77.22 (11.7)

−6.74 (11.8)

Systolic BP, mmHg

Former placebo patients

115.39 (14.2)

−6.19 (11.9)

Former GXR patients

117.58 (13.2)

−7.31 (11.7)

New patients

119.54 (16.9)

−8.27 (14.7)

Diastolic BP, mmHg

Former placebo patients

72.38 (10.5)

−4.11 (10.1)

Former GXR patients

74.51 (11.2)

−6.88 (10.6)

New patients

75.06 (14.0)

−6.52 (10.8)

ECG parameters

 Heart rate, bpm

Former placebo patients

65.7 (8.5)

−7.9 (10.0)

Former GXR patients

63.5 (9.9)

−3.8 (9.5)

New patients

69.30 (9.4)

−8.70 (12.4)

 RR interval, msec

Former placebo patients

926.0 (114.2)

135.7 (165.3)

Former GXR patients

964.6 (147.3)

72.9 (161.8)

New patients

881.55 (134.5)

134.30 (192.9)

 PR interval, msec

Former placebo patients

153.1 (20.5)

3.1 (12.0)

Former GXR patients

149.2 (19.5)

4.2 (11.6)

New patients

150.87 (21.0)

3.44 (15.3)

 QRS interval, msec

Former placebo patients

98.6 (10.4)

0.5 (6.5)

Former GXR patients

100.7 (16.0)

−0.1 (6.4)

New patients

98.58 (7.9)

0.58 (5.7)

 QT interval, msec

Former placebo patients

396.9 (29.0)

16.9 (25.9)

Former GXR patients

403.5 (24.3)

4.6 (25.6)

New patients

387.86 (28.3)

17.05 (27.3)

 QTcB, msec

Former placebo patients

413.5 (23.3)

−9.9 (18.1)

Former GXR patients

413.1 (21.9)

− 9.5 (16.8)

New patients

414.85 (21.4)

−10.56 (21.4)

 QTcF, msec

Former placebo patients

407.8 (22.5)

−1.0 (14.4)

Former GXR patients

409.7 (17.0)

−5.0 (13.4)

New patients

405.41 (19.8)

−1.21 (14.8)

  1. BP Blood pressure, bpm Beats per minute, ECG Electrocardiogram, GXR Guanfacine extended-release, QTcB QTc corrected by Bazett’s formula, QTcF QTc corrected by Fridericia’s formula, SD Standard deviation