The primary objective of this study was to compare the percentage of patients achieving biochemical control (defined as mean GH levels <2.5 µg/L and normalization of sex- and age- adjusted IGF-1) at 24 weeks with pasireotide LAR 40 mg and pasireotide LAR 60 mg separately versus continued treatment with octreotide LAR 30 mg or lanreotide autogel (ATG) 120 mg. The primary efficacy variable is the proportion of patients with a reduction of mean GH levels to < 2.5 µg/L and normalization of sex- and age-adjusted IGF-1 at 24 weeks.

The percentage of patients achieving mean growth hormone (GH) levels < 2.5 μg/L and normalization of sex and age-adjusted IGF-1 was calculated with two sided 95% confidence interval. All GH assessments were based on a 5-point mean growth hormone (GH) assessed from a 2-hour profile. Scheduled time points for blood sampling were pre-dose at 0, 30, 60, 90 and 120 minutes. Total insulin-like growth factor (IGF-1) levels were assessed with one pre-dose sample at the same visits as GH. Concomitant medication known to affect GH or IGF-1 levels were allowed in patients who were not biochemically controlled after at least one year treatment with pasireotide LAR monotherapy: dopamine agonists and growth hormone receptor antagonists (extension full analysis set)

The percentage of patients achieving normalization of sex and age-adjusted IGF-1 was calculated with two sided 95% confidence interval. Total insulin-like growth factor (IGF-1) levels were assessed with one pre-dose sample at the same visits as GH. Concomitant medication known to affect IGF-1 levels were allowed in patients who were not biochemically controlled after at least one year treatment with pasireotide LAR monotherapy: dopamine agonists and growth hormone receptor antagonists (Extension full analysis set)

The percentage of patients achieving mean growth hormone (GH) levels < 2.5 μg/L was calculated with two sided 95% confidence interval. All GH assessments were based on a 5-point mean growth hormone (GH) assessed from a 2-hour profile. Scheduled time points for blood sampling were pre-dose at 0, 30, 60, 90 and 120 minutes. Concomitant medication known to affect GH levels were allowed in patients who were not biochemically controlled after at least one year treatment with pasireotide LAR monotherapy: dopamine agonists and growth hormone receptor antagonists (Extension full analysis set)

Full analysis set (FAS): comprised all patients who were randomized. Following the intent-to-treat principle, patients were analyzed according to the study drug they were assigned to at randomization and actual stratum.

The percentage of patients achieving mean growth hormone (GH) levels < 1.0 μg/L and normalization of sex and age-adjusted IGF-1 was calculated with two sided 95% confidence interval. All GH assessments were based on a 5-point mean growth hormone (GH) assessed from a 2-hour profile. Scheduled time points for blood sampling were pre-dose at 0, 30, 60, 90 and 120 minutes. Total insulin-like growth factor (IGF-1) levels were assessed with one pre-dose sample at the same visits as GH. Concomitant medication known to affect GH or IGF-1 levels were allowed in patients who were not biochemically controlled after at least one year treatment with pasireotide LAR monotherapy: dopamine agonists and growth hormone receptor antagonists (Extension full analysis set

The percentage of patients achieving mean growth hormone (GH) levels < 1.0 μg/L was calculated with two sided 95% confidence interval. All GH assessments were based on a 5-point mean growth hormone (GH) assessed from a 2-hour profile. Scheduled time points for blood sampling were pre-dose at 0, 30, 60, 90 and 120 minutes. Concomitant medication known to affect GH levels were allowed in patients who were not biochemically controlled after at least one year treatment with pasireotide LAR monotherapy: dopamine agonists and growth hormone receptor antagonists (Extension full analysis set)

Number analyzed is based on available data at specific visits

Change from CORE baseline at each scheduled assessment was performed for patients randomized to pasireotide arms. Change from extension baseline at each scheduled assessment was performed for patients randomized to active control arm.

Available data for analysis differed from visit to visit

Standardized IGF-1 = IGF-1 value / ULN, where ULN is the upper limit of the normal range

Available data for analysis varies from visit to visit

Change from CORE baseline at each scheduled assessment was performed for patients randomized to pasireotide arms. Change from extension baseline at each scheduled assessment was performed for patients randomized to active control arm. Standardized IGF-1 = IGF-1 value / ULN, where ULN is the upper limit of the normal range

Available data for analysis differed from visit to visit

n is the number of patients achieving response criteria. The weeks correspond to duration of first response (in weeks) for patients achieving biomedical control. Median and 95% CI are derived from Kaplan-Meier curves. Kaplan-Meier estimates [95% CI] at each time point are estimates of probability of response.

Time to first response is defined as the time from the date of first dose to the date of first occurrence of a reduction of mean GH < 2.5 µg/L and the normalization of IGF-1. The weeks correspond to time taken to achieve first mean GH < 2.5 µg/L and the normalization of IGF-1.

Acromegaly Quality of Life questionnaire (AcroQoL) is a validated disease specific questionnaire. It contains 22 items divided into two scales: physical aspects (8 items) and psychological aspects (14 items) which is divided in two sub-scales: physical appearance and personal relationships of the patient (seven items each). The total score and sub-scores were calculated using the following formula: ((X -Y) / 4Y) x 100, X=sum of the scores for individual items (between 1 and 5 for each item), Y=number of individual items included in above sum (i.e. 22 for the total score, 8 for the physical sub-score, 14 for the psychological sub-score, 7 for the sub-score 'appearance' and 'personal relations'). The scoring of the questionnaire was performed as specified by the instrument developers. Total scores range from 0 to 100. Higher scores represent better quality of life. If more than 25% of items are not completed, results were considered invalid.

Available data available for analysis differed from visit to visit

Acromegaly Quality of Life questionnaire (AcroQoL) is a validated disease specific questionnaire. It contains 22 items divided into two scales: physical aspects (8 items) and psychological aspects (14 items) which is divided in two sub-scales: physical appearance and personal relationships of the patient (seven items each). The total score and sub-scores were calculated using the following formula: ((X -Y) / 4Y) x 100, X=sum of the scores for individual items (between 1 and 5 for each item), Y=number of individual items included in above sum (i.e. 22 for the total score, 8 for the physical sub-score, 14 for the psychological sub-score, 7 for the sub-score 'appearance' and 'personal relations'). The scoring of the questionnaire was performed as specified by the instrument developers. Total scores range from 0 to 100. Higher scores represent better quality of life. If more than 25% of items are not completed, results were considered invalid.

completed and valid questionnaires at visits

PK samples were collected for those patients treated with pasireotide LAR in the core study and who continued on pasireotide LAR in the extension phase. PK samples were collected before the injection of pasireotide LAR only at weeks 112 and 196. PK samples were also collected at weeks 48 and 132 only for all patients treated with octreotide LAR 30 mg or lanreotide ATG 120 mg in the core study who started treatment with pasireotide LAR in the extension study.

Blood samples (2.5 mL each sample) were collected to yield 1-mL plasma for analysis of pasireotide LAR oncentration.

Available data for analysis varies at visits