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Continuation Study With Budesonide Oral Suspension (BOS) for Adolescent and Adult Participants With Eosinophilic Esophagitis (EoE)

A Phase 3, Multicenter, Open-label Continuation Study With Budesonide Oral Suspension (BOS) for Adolescent and Adult Subjects With Eosinophilic Esophagitis (EoE)

Status
Terminated
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03245840
Enrollment
133
Registered
2017-08-10
Start date
2017-10-05
Completion date
2022-04-26
Last updated
2025-02-19

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Eosinophilic Esophagitis (EoE)

Brief summary

This is a continuation study of Budesonide Oral Suspension (BOS) in adults and adolescents with Eosinophilic Esophagitis (EoE) who have completed participation in the SHP621-302 extension study. The purpose of this study is to see if BOS is safe and well tolerated over the long-term in adolescents and adults with EoE.

Interventions

BOS 10 mL twice daily.

Sponsors

Takeda Development Center Americas, Inc.
CollaboratorINDUSTRY
Shire
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
11 Years to 55 Years
Healthy volunteers
No

Inclusion criteria

* Participant completed the SHP621-302 (NCT02736409) extension study and is considered by the investigator to potentially benefit from continued BOS investigational treatment. * Participant is able to provide written informed consent (participant, parent or legal guardian and, as appropriate, participant assent) to participate in the study before completing any study-related procedures. * Females of childbearing potential must agree to continue acceptable birth control measures (example (e.g.): abstinence, surgically sterile male partner, stable oral contraceptives, or double-barrier methods) throughout study participation. * Participant is willing and has an understanding and ability to fully comply with study procedures and restrictions as defined in protocol.

Exclusion criteria

* Participant has changes in medications or diet during the SHP621-302 (NCT02736409) study that could affect participation in this continuation study. * Participant anticipates using swallowed topical corticosteroid for EoE or systemic corticosteroid for any condition during the treatment period; any temporary use (less than or equal to \[≤\] 7 days) or initiation of new steroid treatment during the study should be documented and discussed with the medical monitor prospectively but should be avoided within 4 weeks of the scheduled esophagogastroduodenoscopy (EGDs). * Participant anticipates use of Cytochrome P450 3A4 inhibitors (e.g., ketoconazole, grapefruit juice) during the continuation study. * Participant has an appearance at the EGD at the final treatment evaluation visit of SHP621-302 (NCT02736409) (Visit 8) of an esophageal stricture (high grade), as defined by the presence of a lesion that does not allow passage of a diagnostic adult upper endoscope (e.g., with an insertion tube diameter of greater than (\>) 9 millimeter \[mm\]). * Participant has presence of esophageal varices at the EGD at the final treatment evaluation visit (Visit 8) of the SHP621-302 (NCT02736409) study. * Participant has any current disease of the gastrointestinal tract, aside from EoE, including eosinophilic gastritis, enteritis, colitis, or proctitis, inflammatory bowel disease, or celiac disease. * Participant has other diseases causing or associated with esophageal eosinophilia, including hypereosinophilic syndrome, collagen vascular disease, vasculitis, achalasia, or parasitic infection. * Participant has oropharyngeal or esophageal candidiasis that failed to respond to previous treatment. Diagnosis with oropharyngeal or esophageal candidiasis at or since the final treatment evaluation visit (Visit 8) of the SHP621-302 (NCT02736409) study is not an exclusion as long as the participant is expected to respond to treatment. * Participant has a potentially serious acute or chronic infection or immunodeficiency condition, including tuberculosis, fungal, bacterial, viral/parasite infection, ocular herpes simplex, or chicken pox/measles. * Participant has upper gastrointestinal bleeding identified at the EGD at the final treatment evaluation visit (Visit 8) of the SHP621-302 (NCT02736409) study. * Participant has evidence of active infection with Helicobacter pylori. * Participant has evidence of unstable asthma. * Participant is female and pregnant or nursing. * Participant has a history of intolerance, hypersensitivity, or idiosyncratic reaction to budesonide (or any other corticosteroids), or to any other ingredients of the study medication. * Participant has a history or high risk of noncompliance with treatment or regular clinic visits.

Design outcomes

Primary

MeasureTime frameDescription
Change From Baseline in Bone Mineral Density (BMD) For Adolescents Assessed by Dual-Energy X-ray Absorptiometry (DXA) Scan at Month 12Baseline, Month 12The sites for DXA measurement were the lumbar spine at lumbar vertebrae 1 to 4 (L1-L4) and whole body. DXA scans for determination of BMD and body composition was performed in participants aged 11-17 years. Z-score indicates the number of standard deviations away from a reference population in the same age range and with the same sex. In this study, the BMD Z-score is considered abnormal when the z-score is less than (\<) -2, suggesting a worse outcome (i.e., osteoporosis). Change from baseline in BMD for adolescents assessed by DXA Scan at Month 12 was reported.
Number of Participants With Treatment-emergent Adverse Events (TEAEs) and Serious TEAEsFrom start of study drug administration up to End of study (EOS) (Up to Month 53)An adverse event (AE) was any untoward medical occurrence in a clinical investigation participant administered a pharmaceutical product and that does not necessarily have a causal relationship with this treatment. A Serious Adverse Event (SAE) was any untoward medical occurrence (whether considered to be related to investigational product or not) that at any dose: results in death, is life-threatening, requires inpatient hospitalization or prolongation of existing hospitalization, results in persistent or significant disability/incapacity, is a congenital abnormality/birth defect, and is an important medical event. Both serious and Non-serious TEAEs were reported in this outcome measure. TEAEs were defined as AEs with a start date on or after the first dose of investigational product or a start date before the date of the first dose of investigational product that increased in severity or after the date of the first dose.
Number of Participants With Clinically Significant Physical Examination FindingsFrom start of study drug administration up to EOS (Up to Month 53)Number of participants with clinically significant physical examination findings were reported. Clinical significance was determined by investigator.
Number of Participants With Clinically Significant Change From Baseline in Vital SignsFrom start of study drug administration up to EOS (Up to Month 53)Participants were assessed by investigator for any clinically significant changes in vital parameters like temperature, systolic and diastolic blood pressure, pulse, respiratory rate, BMI, and weight. Vital signs were assessed after the participant had been in a supine position for at least 5 minutes immediately prior to the assessment. The criteria for clinically significant change was as per the investigators discretion.
Change From Baseline in BMD For Adolescents Assessed by DXA Scan at Month 24Baseline, Month 24The sites for DXA measurement were the lumbar spine at lumbar vertebrae 1 to 4 (L1-L4) and whole body. DXA scans for determination of BMD and body composition was performed in participants aged 11-17 years. Z-score indicates the number of standard deviations away from a reference population in the same age range and with the same sex. In this study, the BMD Z-score is considered abnormal when the z-score is \<-2, suggesting a worse outcome (i.e., osteoporosis) and vice versa. Change from baseline in BMD for adolescents assessed by DXA Scan at Month 24 was reported.
Change From Baseline in BMD For Adolescents Assessed by DXA Scan at Month 36Baseline, Month 36The sites for DXA measurement were the lumbar spine at lumbar vertebrae 1 to 4 (L1-L4) and whole body. DXA scans for determination of BMD and body composition was performed in participants aged 11-17 years. Z-score indicates the number of standard deviations away from a reference population in the same age range and with the same sex. In this study, the BMD Z-score is considered abnormal when the z-score is \< -2, suggesting a worse outcome (i.e., osteoporosis) and vice versa. Change from baseline in BMD for adolescents assessed by DXA Scan at Month 36 was reported.
Change From Baseline in BMD For Adolescents Assessed by DXA Scan at Month 48Baseline, Month 48The sites for DXA measurement were the lumbar spine at lumbar vertebrae 1 to 4 (L1-L4) and whole body. DXA scans for determination of BMD and body composition was performed in participants aged 11-17 years. Z-score indicates the number of standard deviations away from a reference population in the same age range and with the same sex. In this study, the BMD Z-score is considered abnormal when the z-score is \< -2, suggesting a worse outcome (i.e., osteoporosis) and vice versa. Change from baseline in BMD for adolescents assessed by DXA Scan at Month 48 was reported.
Change From Baseline in BMD For Adolescents Assessed by DXA Scan at EOS (Up to Month 53)Baseline, EOS (Up to Month 53)The sites for DXA measurement were the lumbar spine at lumbar vertebrae 1 to 4 (L1-L4) and whole body. DXA scans for determination of BMD and body composition was performed in participants aged 11-17 years. Z-score indicates the number of standard deviations away from a reference population in the same age range and with the same sex. In this study, the BMD Z-score is considered abnormal when the z-score is \< -2, suggesting a worse outcome (i.e., osteoporosis) and vice versa. Change from baseline in BMD for adolescents assessed by DXA Scan at EOS (up to Month 53) was reported.
Change From Baseline in Cortisol Level After Adrenocorticotropic Hormone (ACTH) Stimulation at Month 12Baseline, Month 12ACTH testing was a standard procedure to measure the levels of cortisol in the blood following the injection of a synthetic form of ACTH (250 microgram \[mcg\]). The type of synthetic and route of administration was per investigator discretion. The change from baseline in cortisol levels was calculated at Month 12 and reported in this outcome measure.
Change From Baseline in Cortisol Level After ACTH Stimulation at Month 24Baseline, Month 24ACTH testing was a standard procedure to measure the levels of cortisol in the blood following the injection of a synthetic form of ACTH (250 microgram \[mcg\]). The type of synthetic and route of administration was per investigator discretion. The change from baseline in cortisol levels was calculated at Month 24 and reported in this outcome measure.
Change From Baseline in Cortisol Level After ACTH Stimulation at Month 36Baseline, Month 36ACTH testing was a standard procedure to measure the levels of cortisol in the blood following the injection of a synthetic form of ACTH (250 microgram \[mcg\]). The type of synthetic and route of administration was per investigator discretion. The change from baseline in cortisol levels was calculated at Month 36 and reported in this outcome measure.
Change From Baseline in Cortisol Level After ACTH Stimulation at Month 48Baseline, Month 48ACTH testing was a standard procedure to measure the levels of cortisol in the blood following the injection of a synthetic form of ACTH (250 microgram \[mcg\]). The type of synthetic and route of administration was per investigator discretion. The change from baseline in cortisol levels was calculated at Month 48 and reported in this outcome measure.
Change From Baseline in Cortisol Level After ACTH Stimulation at EOS (Up to Month 53)Baseline, EOS (Up to Month 53)ACTH testing was a standard procedure to measure the levels of cortisol in the blood following the injection of a synthetic form of ACTH (250 microgram \[mcg\]). The type of synthetic and route of administration was per investigator discretion. The change from baseline in cortisol levels was calculated at EOS (up to Month 53) and reported in this outcome measure.
Number of Participants With Clinically Significant Changes in Clinical Laboratory AssessmentsFrom start of study drug administration up to EOS (Up to Month 53)Clinical laboratory parameters included hematology, chemistry, urinalysis; urine pregnancy test. Number of participants with potential clinically significant changes in laboratory parameters which were deemed clinically meaningful by the investigator were reported.

Countries

United States

Participant flow

Recruitment details

This study was conducted at 44 active sites in North America from 05 October 2017 (first participant enrolled) to 26 April 2022 (last participant completed).

Pre-assignment details

A total of 174 participants completed the study SHP621-302 (NCT02736409), of which 133 consented to participate and were enrolled in this long-term safety and efficacy study (SHP621-303). A total of 131 participants were treated in this study. This study was terminated as per sponsor's decision.

Participants by arm

ArmCount
BOS-BOS
Participants who were randomized to BOS and PBO in Study SHP621-301 (NCT02605837) and to BOS in Study SHP621-302 (NCT02736409), were enrolled in Study SHP621-303 to receive 10 mL of BOS at a concentration of 0.2 mg/mL, twice daily, for up to 4 years 5 months.
121
PBO-BOS
Participants who were randomized to and fully responded to BOS treatment in Study SHP621-301 (NCT02605837), were randomized to PBO in Study SHP621-302 (NCT02736409) and enrolled in Study SHP621-303 to receive 10 mL of BOS at a concentration of 0.2 mg/mL, twice daily, for up to 4 years 5 months.
10
Total131

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyAdverse Event60
Overall StudyDeath20
Overall StudyLost to Follow-up122
Overall StudyNon-Compliance with Study Drug20
Overall StudyNot treated11
Overall StudyPhysician Decision41
Overall StudyPregnancy20
Overall StudySite Terminated by Sponsor40
Overall StudyStudy Terminated by Sponsor566
Overall StudyWithdrawal by Parent/Guardian20
Overall StudyWithdrawal by Subject311

Baseline characteristics

CharacteristicBOS-BOSPBO-BOSTotal
Age, Continuous33.9 years
STANDARD_DEVIATION 12.65
40.2 years
STANDARD_DEVIATION 9.97
34.4 years
STANDARD_DEVIATION 12.55
Age, Customized
18 or more years
99 Participants10 Participants109 Participants
Age, Customized
Less than 18 years
22 Participants0 Participants22 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
3 Participants0 Participants3 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
117 Participants10 Participants127 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
1 Participants0 Participants1 Participants
Race (NIH/OMB)
American Indian or Alaska Native
1 Participants0 Participants1 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Black or African American
4 Participants0 Participants4 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
1 Participants0 Participants1 Participants
Race (NIH/OMB)
Unknown or Not Reported
6 Participants0 Participants6 Participants
Race (NIH/OMB)
White
109 Participants10 Participants119 Participants
Sex: Female, Male
Female
47 Participants2 Participants49 Participants
Sex: Female, Male
Male
74 Participants8 Participants82 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
2 / 1210 / 10
other
Total, other adverse events
90 / 1217 / 10
serious
Total, serious adverse events
11 / 1210 / 10

Outcome results

Primary

Change From Baseline in BMD For Adolescents Assessed by DXA Scan at EOS (Up to Month 53)

The sites for DXA measurement were the lumbar spine at lumbar vertebrae 1 to 4 (L1-L4) and whole body. DXA scans for determination of BMD and body composition was performed in participants aged 11-17 years. Z-score indicates the number of standard deviations away from a reference population in the same age range and with the same sex. In this study, the BMD Z-score is considered abnormal when the z-score is \< -2, suggesting a worse outcome (i.e., osteoporosis) and vice versa. Change from baseline in BMD for adolescents assessed by DXA Scan at EOS (up to Month 53) was reported.

Time frame: Baseline, EOS (Up to Month 53)

Population: The safety set consisted of all participants who received at least 1 dose of BOS. Here, overall number of participants analyzed signified participants who were evaluable for this outcome measure and number analyzed signifies participants who were evaluable for given categories. DXA was performed for participants aged 11-17 years only and no participants of this age range were present in PBO-BOS group.

ArmMeasureGroupValue (MEAN)Dispersion
BOS-BOSChange From Baseline in BMD For Adolescents Assessed by DXA Scan at EOS (Up to Month 53)Baseline Lumbar Spine (L1- L4)-0.525 Z-scoreStandard Deviation 1.0583
BOS-BOSChange From Baseline in BMD For Adolescents Assessed by DXA Scan at EOS (Up to Month 53)Change at EOS (Up to Month 53) Lumbar Spine (L1- L4)0.482 Z-scoreStandard Deviation 0.6539
BOS-BOSChange From Baseline in BMD For Adolescents Assessed by DXA Scan at EOS (Up to Month 53)Baseline Whole Body-0.565 Z-scoreStandard Deviation 0.9464
BOS-BOSChange From Baseline in BMD For Adolescents Assessed by DXA Scan at EOS (Up to Month 53)Change at EOS (Up to Month 53) Whole Body0.350 Z-scoreStandard Deviation 0.7541
Primary

Change From Baseline in BMD For Adolescents Assessed by DXA Scan at Month 24

The sites for DXA measurement were the lumbar spine at lumbar vertebrae 1 to 4 (L1-L4) and whole body. DXA scans for determination of BMD and body composition was performed in participants aged 11-17 years. Z-score indicates the number of standard deviations away from a reference population in the same age range and with the same sex. In this study, the BMD Z-score is considered abnormal when the z-score is \<-2, suggesting a worse outcome (i.e., osteoporosis) and vice versa. Change from baseline in BMD for adolescents assessed by DXA Scan at Month 24 was reported.

Time frame: Baseline, Month 24

Population: The safety set consisted of all participants who received at least 1 dose of BOS. Here, overall number of participants analyzed signified participants who were evaluable for this outcome measure and number analyzed signifies participants who were evaluable for given categories. DXA was performed for participants aged 11-17 years only and no participants of this age range were present in PBO-BOS group.

ArmMeasureGroupValue (MEAN)Dispersion
BOS-BOSChange From Baseline in BMD For Adolescents Assessed by DXA Scan at Month 24Baseline Whole Body-0.565 Z-scoreStandard Deviation 0.9464
BOS-BOSChange From Baseline in BMD For Adolescents Assessed by DXA Scan at Month 24Change at Month 24 Whole Body0.092 Z-scoreStandard Deviation 0.5326
BOS-BOSChange From Baseline in BMD For Adolescents Assessed by DXA Scan at Month 24Baseline Lumbar Spine (L1- L4)-0.525 Z-scoreStandard Deviation 1.0583
BOS-BOSChange From Baseline in BMD For Adolescents Assessed by DXA Scan at Month 24Change at Month 24 Lumbar Spine (L1- L4)0.445 Z-scoreStandard Deviation 0.7312
Primary

Change From Baseline in BMD For Adolescents Assessed by DXA Scan at Month 36

The sites for DXA measurement were the lumbar spine at lumbar vertebrae 1 to 4 (L1-L4) and whole body. DXA scans for determination of BMD and body composition was performed in participants aged 11-17 years. Z-score indicates the number of standard deviations away from a reference population in the same age range and with the same sex. In this study, the BMD Z-score is considered abnormal when the z-score is \< -2, suggesting a worse outcome (i.e., osteoporosis) and vice versa. Change from baseline in BMD for adolescents assessed by DXA Scan at Month 36 was reported.

Time frame: Baseline, Month 36

Population: The safety set consisted of all participants who received at least 1 dose of BOS. Here, overall number of participants analyzed signified participants who were evaluable for this outcome measure and number analyzed signifies participants who were evaluable for given categories. DXA was performed for participants aged 11-17 years only and no participants of this age range were present in PBO-BOS group.

ArmMeasureGroupValue (MEAN)Dispersion
BOS-BOSChange From Baseline in BMD For Adolescents Assessed by DXA Scan at Month 36Change at Month 36 Lumbar Spine (L1- L4)0.603 Z-scoreStandard Deviation 0.9089
BOS-BOSChange From Baseline in BMD For Adolescents Assessed by DXA Scan at Month 36Baseline Whole Body-0.565 Z-scoreStandard Deviation 0.9464
BOS-BOSChange From Baseline in BMD For Adolescents Assessed by DXA Scan at Month 36Change at Month 36 Whole Body0.870 Z-scoreStandard Deviation 0.6447
BOS-BOSChange From Baseline in BMD For Adolescents Assessed by DXA Scan at Month 36Baseline Lumbar Spine (L1- L4)-0.525 Z-scoreStandard Deviation 1.0583
Primary

Change From Baseline in BMD For Adolescents Assessed by DXA Scan at Month 48

The sites for DXA measurement were the lumbar spine at lumbar vertebrae 1 to 4 (L1-L4) and whole body. DXA scans for determination of BMD and body composition was performed in participants aged 11-17 years. Z-score indicates the number of standard deviations away from a reference population in the same age range and with the same sex. In this study, the BMD Z-score is considered abnormal when the z-score is \< -2, suggesting a worse outcome (i.e., osteoporosis) and vice versa. Change from baseline in BMD for adolescents assessed by DXA Scan at Month 48 was reported.

Time frame: Baseline, Month 48

Population: The safety set consisted of all participants who received at least 1 dose of BOS. Here, overall number of participants analyzed signified participants who were evaluable for this outcome measure and number analyzed signifies participants who were evaluable for given categories. DXA was performed for participants aged 11-17 years only and no participants of this age range were present in PBO-BOS group.

ArmMeasureGroupValue (MEAN)Dispersion
BOS-BOSChange From Baseline in BMD For Adolescents Assessed by DXA Scan at Month 48Baseline Lumbar Spine (L1- L4)-0.525 Z-scoreStandard Deviation 1.0583
BOS-BOSChange From Baseline in BMD For Adolescents Assessed by DXA Scan at Month 48Change at Month 48 Lumbar Spine (L1- L4)0.657 Z-scoreStandard Deviation 0.4813
BOS-BOSChange From Baseline in BMD For Adolescents Assessed by DXA Scan at Month 48Baseline Whole Body-0.565 Z-scoreStandard Deviation 0.9464
BOS-BOSChange From Baseline in BMD For Adolescents Assessed by DXA Scan at Month 48Change at Month 48 Whole Body0.817 Z-scoreStandard Deviation 0.4521
Primary

Change From Baseline in Bone Mineral Density (BMD) For Adolescents Assessed by Dual-Energy X-ray Absorptiometry (DXA) Scan at Month 12

The sites for DXA measurement were the lumbar spine at lumbar vertebrae 1 to 4 (L1-L4) and whole body. DXA scans for determination of BMD and body composition was performed in participants aged 11-17 years. Z-score indicates the number of standard deviations away from a reference population in the same age range and with the same sex. In this study, the BMD Z-score is considered abnormal when the z-score is less than (\<) -2, suggesting a worse outcome (i.e., osteoporosis). Change from baseline in BMD for adolescents assessed by DXA Scan at Month 12 was reported.

Time frame: Baseline, Month 12

Population: The safety set consisted of all participants who received at least 1 dose of BOS. Here, overall number of participants analyzed signified participants who were evaluable for this outcome measure and number analyzed signifies participants who were evaluable for given categories. DXA was performed for participants aged 11-17 years only and no participants of this age range were present in PBO-BOS group.

ArmMeasureGroupValue (MEAN)Dispersion
BOS-BOSChange From Baseline in Bone Mineral Density (BMD) For Adolescents Assessed by Dual-Energy X-ray Absorptiometry (DXA) Scan at Month 12Baseline Whole Body-0.565 Z-scoreStandard Deviation 0.9464
BOS-BOSChange From Baseline in Bone Mineral Density (BMD) For Adolescents Assessed by Dual-Energy X-ray Absorptiometry (DXA) Scan at Month 12Baseline Lumbar Spine (L1- L4)-0.525 Z-scoreStandard Deviation 1.0583
BOS-BOSChange From Baseline in Bone Mineral Density (BMD) For Adolescents Assessed by Dual-Energy X-ray Absorptiometry (DXA) Scan at Month 12Change at Month 12 Lumbar Spine (L1- L4)0.315 Z-scoreStandard Deviation 0.3618
BOS-BOSChange From Baseline in Bone Mineral Density (BMD) For Adolescents Assessed by Dual-Energy X-ray Absorptiometry (DXA) Scan at Month 12Change at Month 12 Whole Body0.250 Z-scoreStandard Deviation 0.2599
Primary

Change From Baseline in Cortisol Level After ACTH Stimulation at EOS (Up to Month 53)

ACTH testing was a standard procedure to measure the levels of cortisol in the blood following the injection of a synthetic form of ACTH (250 microgram \[mcg\]). The type of synthetic and route of administration was per investigator discretion. The change from baseline in cortisol levels was calculated at EOS (up to Month 53) and reported in this outcome measure.

Time frame: Baseline, EOS (Up to Month 53)

Population: The safety set consisted of all participants who received at least 1 dose of BOS. Here, overall number of participants analyzed signified participants who were evaluable for this outcome measure and number analyzed signifies participants who were evaluable for given categories.

ArmMeasureGroupValue (MEAN)Dispersion
BOS-BOSChange From Baseline in Cortisol Level After ACTH Stimulation at EOS (Up to Month 53)Baseline10.49 mcg/dLStandard Deviation 5.508
BOS-BOSChange From Baseline in Cortisol Level After ACTH Stimulation at EOS (Up to Month 53)Change at EOS (Up to Month 53)0.96 mcg/dLStandard Deviation 5.362
PBO-BOSChange From Baseline in Cortisol Level After ACTH Stimulation at EOS (Up to Month 53)Baseline13.15 mcg/dLStandard Deviation 7.188
PBO-BOSChange From Baseline in Cortisol Level After ACTH Stimulation at EOS (Up to Month 53)Change at EOS (Up to Month 53)1.06 mcg/dLStandard Deviation 6.138
Primary

Change From Baseline in Cortisol Level After ACTH Stimulation at Month 24

ACTH testing was a standard procedure to measure the levels of cortisol in the blood following the injection of a synthetic form of ACTH (250 microgram \[mcg\]). The type of synthetic and route of administration was per investigator discretion. The change from baseline in cortisol levels was calculated at Month 24 and reported in this outcome measure.

Time frame: Baseline, Month 24

Population: The safety set consisted of all participants who received at least 1 dose of BOS. Here, overall number of participants analyzed signified participants who were evaluable for this outcome measure and number analyzed signifies participants who were evaluable for given categories.

ArmMeasureGroupValue (MEAN)Dispersion
BOS-BOSChange From Baseline in Cortisol Level After ACTH Stimulation at Month 24Baseline10.49 mcg/dLStandard Deviation 5.508
BOS-BOSChange From Baseline in Cortisol Level After ACTH Stimulation at Month 24Change At Month 240.81 mcg/dLStandard Deviation 6.127
PBO-BOSChange From Baseline in Cortisol Level After ACTH Stimulation at Month 24Baseline13.15 mcg/dLStandard Deviation 7.188
PBO-BOSChange From Baseline in Cortisol Level After ACTH Stimulation at Month 24Change At Month 24-2.58 mcg/dLStandard Deviation 3.727
Primary

Change From Baseline in Cortisol Level After ACTH Stimulation at Month 36

ACTH testing was a standard procedure to measure the levels of cortisol in the blood following the injection of a synthetic form of ACTH (250 microgram \[mcg\]). The type of synthetic and route of administration was per investigator discretion. The change from baseline in cortisol levels was calculated at Month 36 and reported in this outcome measure.

Time frame: Baseline, Month 36

Population: The safety set consisted of all participants who received at least 1 dose of BOS. Here, overall number of participants analyzed signified participants who were evaluable for this outcome measure and number analyzed signifies participants who were evaluable for given categories.

ArmMeasureGroupValue (MEAN)Dispersion
BOS-BOSChange From Baseline in Cortisol Level After ACTH Stimulation at Month 36Baseline10.49 mcg/dLStandard Deviation 5.508
BOS-BOSChange From Baseline in Cortisol Level After ACTH Stimulation at Month 36Change At Month 360.70 mcg/dLStandard Deviation 5.773
PBO-BOSChange From Baseline in Cortisol Level After ACTH Stimulation at Month 36Baseline13.15 mcg/dLStandard Deviation 7.188
PBO-BOSChange From Baseline in Cortisol Level After ACTH Stimulation at Month 36Change At Month 36-1.63 mcg/dLStandard Deviation 3.845
Primary

Change From Baseline in Cortisol Level After ACTH Stimulation at Month 48

ACTH testing was a standard procedure to measure the levels of cortisol in the blood following the injection of a synthetic form of ACTH (250 microgram \[mcg\]). The type of synthetic and route of administration was per investigator discretion. The change from baseline in cortisol levels was calculated at Month 48 and reported in this outcome measure.

Time frame: Baseline, Month 48

Population: The safety set consisted of all participants who received at least 1 dose of BOS. Here, overall number of participants analyzed signified participants who were evaluable for this outcome measure and number analyzed signifies participants who were evaluable for given categories.

ArmMeasureGroupValue (MEAN)Dispersion
BOS-BOSChange From Baseline in Cortisol Level After ACTH Stimulation at Month 48Baseline10.49 mcg/dLStandard Deviation 5.508
BOS-BOSChange From Baseline in Cortisol Level After ACTH Stimulation at Month 48Change At Month 482.02 mcg/dLStandard Deviation 4.759
PBO-BOSChange From Baseline in Cortisol Level After ACTH Stimulation at Month 48Baseline13.15 mcg/dLStandard Deviation 7.188
PBO-BOSChange From Baseline in Cortisol Level After ACTH Stimulation at Month 48Change At Month 480.20 mcg/dLStandard Deviation 5.17
Primary

Change From Baseline in Cortisol Level After Adrenocorticotropic Hormone (ACTH) Stimulation at Month 12

ACTH testing was a standard procedure to measure the levels of cortisol in the blood following the injection of a synthetic form of ACTH (250 microgram \[mcg\]). The type of synthetic and route of administration was per investigator discretion. The change from baseline in cortisol levels was calculated at Month 12 and reported in this outcome measure.

Time frame: Baseline, Month 12

Population: The safety set consisted of all participants who received at least 1 dose of BOS. Here, overall number of participants analyzed signified participants who were evaluable for this outcome measure and number analyzed signifies participants who were evaluable for given categories.

ArmMeasureGroupValue (MEAN)Dispersion
BOS-BOSChange From Baseline in Cortisol Level After Adrenocorticotropic Hormone (ACTH) Stimulation at Month 12Baseline10.49 micrograms per deciliter (mcg/dL)Standard Deviation 5.508
BOS-BOSChange From Baseline in Cortisol Level After Adrenocorticotropic Hormone (ACTH) Stimulation at Month 12Change At Month 120.06 micrograms per deciliter (mcg/dL)Standard Deviation 6.215
PBO-BOSChange From Baseline in Cortisol Level After Adrenocorticotropic Hormone (ACTH) Stimulation at Month 12Baseline13.15 micrograms per deciliter (mcg/dL)Standard Deviation 7.188
PBO-BOSChange From Baseline in Cortisol Level After Adrenocorticotropic Hormone (ACTH) Stimulation at Month 12Change At Month 126.77 micrograms per deciliter (mcg/dL)Standard Deviation 8.835
Primary

Number of Participants With Clinically Significant Change From Baseline in Vital Signs

Participants were assessed by investigator for any clinically significant changes in vital parameters like temperature, systolic and diastolic blood pressure, pulse, respiratory rate, BMI, and weight. Vital signs were assessed after the participant had been in a supine position for at least 5 minutes immediately prior to the assessment. The criteria for clinically significant change was as per the investigators discretion.

Time frame: From start of study drug administration up to EOS (Up to Month 53)

Population: The safety set consisted of all participants who received at least 1 dose of BOS.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
BOS-BOSNumber of Participants With Clinically Significant Change From Baseline in Vital Signs0 Participants
PBO-BOSNumber of Participants With Clinically Significant Change From Baseline in Vital Signs0 Participants
Primary

Number of Participants With Clinically Significant Changes in Clinical Laboratory Assessments

Clinical laboratory parameters included hematology, chemistry, urinalysis; urine pregnancy test. Number of participants with potential clinically significant changes in laboratory parameters which were deemed clinically meaningful by the investigator were reported.

Time frame: From start of study drug administration up to EOS (Up to Month 53)

Population: The safety set consisted of all participants who received at least 1 dose of BOS.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
BOS-BOSNumber of Participants With Clinically Significant Changes in Clinical Laboratory Assessments0 Participants
PBO-BOSNumber of Participants With Clinically Significant Changes in Clinical Laboratory Assessments0 Participants
Primary

Number of Participants With Clinically Significant Physical Examination Findings

Number of participants with clinically significant physical examination findings were reported. Clinical significance was determined by investigator.

Time frame: From start of study drug administration up to EOS (Up to Month 53)

Population: The safety set consisted of all participants who received at least 1 dose of BOS.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
BOS-BOSNumber of Participants With Clinically Significant Physical Examination FindingsMoon Face0 Participants
BOS-BOSNumber of Participants With Clinically Significant Physical Examination FindingsHirsutism0 Participants
BOS-BOSNumber of Participants With Clinically Significant Physical Examination FindingsInsomnia0 Participants
BOS-BOSNumber of Participants With Clinically Significant Physical Examination FindingsMood swings0 Participants
BOS-BOSNumber of Participants With Clinically Significant Physical Examination FindingsDepression1 Participants
BOS-BOSNumber of Participants With Clinically Significant Physical Examination FindingsAcne2 Participants
PBO-BOSNumber of Participants With Clinically Significant Physical Examination FindingsDepression0 Participants
PBO-BOSNumber of Participants With Clinically Significant Physical Examination FindingsMood swings0 Participants
PBO-BOSNumber of Participants With Clinically Significant Physical Examination FindingsMoon Face0 Participants
PBO-BOSNumber of Participants With Clinically Significant Physical Examination FindingsAcne0 Participants
PBO-BOSNumber of Participants With Clinically Significant Physical Examination FindingsInsomnia0 Participants
PBO-BOSNumber of Participants With Clinically Significant Physical Examination FindingsHirsutism0 Participants
Primary

Number of Participants With Treatment-emergent Adverse Events (TEAEs) and Serious TEAEs

An adverse event (AE) was any untoward medical occurrence in a clinical investigation participant administered a pharmaceutical product and that does not necessarily have a causal relationship with this treatment. A Serious Adverse Event (SAE) was any untoward medical occurrence (whether considered to be related to investigational product or not) that at any dose: results in death, is life-threatening, requires inpatient hospitalization or prolongation of existing hospitalization, results in persistent or significant disability/incapacity, is a congenital abnormality/birth defect, and is an important medical event. Both serious and Non-serious TEAEs were reported in this outcome measure. TEAEs were defined as AEs with a start date on or after the first dose of investigational product or a start date before the date of the first dose of investigational product that increased in severity or after the date of the first dose.

Time frame: From start of study drug administration up to End of study (EOS) (Up to Month 53)

Population: The safety set consisted of all participants who received at least 1 dose of BOS.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
BOS-BOSNumber of Participants With Treatment-emergent Adverse Events (TEAEs) and Serious TEAEsTEAEs93 Participants
BOS-BOSNumber of Participants With Treatment-emergent Adverse Events (TEAEs) and Serious TEAEsSerious TEAEs11 Participants
PBO-BOSNumber of Participants With Treatment-emergent Adverse Events (TEAEs) and Serious TEAEsTEAEs7 Participants
PBO-BOSNumber of Participants With Treatment-emergent Adverse Events (TEAEs) and Serious TEAEsSerious TEAEs0 Participants

Source: ClinicalTrials.gov · Data processed: Feb 9, 2026