Table 1 Mean rate of change in GA area from baseline by month, mixed-model for repeated measures (MMRM) analysis square root transformation.

From: Avacincaptad pegol for geographic atrophy secondary to age-related macular degeneration: 18-month findings from the GATHER1 trial

Cohort

Avacincaptad pegol 2 mg

Shama

Avacincaptad pegol 4 mg

Shamb

GA at baseline (mm), Mean (SD)

2.618 (0.7001)

2.633 (0.7009)

2.715 (0.7320)

2.636 (0.7091)

n at baseline

67

110

83

84

GA at month 6 (mm), Mean (SD)

2.772 (0.7183)

2.865 (0.7154)

2.930 (0.7483)

2.886 (0.7145)

6-month least squares Mean (SE)

0.123 (0.043)

0.178 (0.042)

0.145 (0.039)

0.198 (0.037)

6-month difference, (% Difference [95% CI])

 

0.054 (30.68 [0.006; 0.103])

 

0.053 (26.93 [0.007; 0.100])

n at month 6 (% of baseline)

58 (86.6)

92 (83.6)

63 (75.9)

73 (86.9)

GA at month 12 (mm), Mean (SD)

3.032 (0.6643)

3.119 (0.7182)

3.083 (0.7713)

3.143 (0.7201)

12-month least squares Mean (SE)

0.287 (0.073)

0.384 (0.071)

0.301 (0.070)

0.418 (0.067)

12-month difference, (% Difference [95% CI])

 

0.097 (25.31 [0.017; 0.177])

 

0.117 (28.04 [0.033; 0.202])

n at Month 12 (% of baseline)

49 (73.1)

90 (81.8)

55 (66.3)

72 (85.7)

GA at month 18 (mm), Mean (SD)

3.063 (0.5821)

3.282 (0.7563)

3.108 (0.8158)

3.294 (0.7641)

18-month least squares Mean (SE)

0.430 (0.092)

0.599 (0.089)

0.391 (0.087)

0.559 (0.083)

18-month difference, (% Difference [95% CI])

 

0.168 (28.11 [0.066; 0.271])

 

0.167 (29.97 [0.062; 0.273])

n at Month 18 (% of baseline)

41 (61.2)

78 (70.9)

45 (54.2)

64 (76.2)

  1. GA geographic atrophy, SD standard deviation, SE standard error.
  2. aSham for 2 mg arm.
  3. bSham for 4 mg arm.