Trial Outcomes & Findings for A Study of Ustekinumab in Participants With Takayasu Arteritis (TAK) (NCT NCT04882072)

Due to the early study termination, participants who had relapse during double blind period were only able to enter open label extension (OLE) period.

A Study of Ustekinumab in Participants With Takayasu Arteritis (TAK)

ToR:time from randomization to 1st relapse through end of double-blind period (EDBP) per protocol-defined criteria with 5 categories:systemic (objective):body temperature \>=38.0°C, weight loss \>2kg in 4 weeks, arthralgia, swelling \& tenderness =\>2 joints; systemic (subjective):malaise, myalgia, headache, dizziness/vertigo at \>= grade 2, high inflammation markers (C-reactive protein \>=1.0mg/dL, erythrocyte sedimentation rate \>=30mm/hr), vascular symptoms:renovascular hypertension: if normal BP \<120/80mmHg risen to \>=140/90mmHg, or if normal BP \>=120/80mmHg, diastolic BP risen by \>=20mmHg, new bruits/loss of pulse/difference in systolic BP between left and right by \>=10mmHg/tenderness/spontaneous pain in carotid artery/chest/back region, aortic valve incompetence; ischemic symptoms:abdominal pain, seizure, syncope, intermittent claudication, ischemic cardiac pain. Relapse:\>=2 categories met criteria.

An adverse event (AE) was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship with the study intervention. TEAEs were defined as AEs with onset or worsening on or after date of first dose of study intervention through the day of last dose.

SAE is any untoward medical occurrence that at any dose may results in death, is life-threatening, requires inpatient hospitalization or prolongation of existing hospitalization, results in persistent or significant disability/incapacity, is a congenital anomaly/birth defect, is a suspected transmission of any infectious agent via a medicinal product. Treatment-emergent SAEs were defined as SAEs with onset or worsening on or after date of first dose of study intervention through the day of last dose.

ToR was defined from the date of randomization to the judged date of relapse through the EDBP based on Kerr's definition: participants who met 2 or more categories in the following 4 categories were considered as relapse: systemic (objective):body temperature \>=38.0°C, weight loss \>2kg in 4 weeks, arthralgia, swelling \& tenderness =\>2 joints; systemic (subjective):malaise, myalgia, headache, dizziness/vertigo at \>= grade 2, high inflammation markers (C-reactive protein \>=1.0mg/dL, erythrocyte sedimentation rate \>=30mm/hr), vascular symptoms:renovascular hypertension: if normal BP \<120/80mmHg risen to \>=140/90mmHg, or if normal BP \>=120/80mmHg, diastolic BP risen by \>=20mmHg, new bruits/loss of pulse/difference in systolic BP between left and right by \>=10mmHg/tenderness/spontaneous pain in carotid artery/chest/back region, aortic valve incompetence; ischemic symptoms:abdominal pain, seizure, syncope, intermittent claudication, ischemic cardiac pain.

Time (in weeks) to relapse of TAK: time from randomization to the 1st relapse through the EDBP according to protocol-defined criteria with 5 categories: systemic (objective):body temperature \>=38.0°C, weight loss \>2kg in 4 weeks, arthralgia, swelling and tenderness =\>2 joints; systemic (subjective):malaise, myalgia, headache, dizziness/vertigo at \>= grade 2, high inflammation markers (C-reactive protein \>=1.0mg/dL, erythrocyte sedimentation rate \>=30mm/hr), vascular symptoms:renovascular hypertension: if normal BP \<120/80mmHg risen to \>=140/90mmHg, or if normal BP \>=120/80mmHg, diastolic BP risen by \>=20mmHg, new bruits/loss of pulse/difference in systolic BP between left and right by \>=10mmHg/tenderness/spontaneous pain in carotid artery/chest/back region, aortic valve incompetence; ischemic symptoms:abdominal pain, seizure, syncope, intermittent claudication, ischemic cardiac pain. Time to relapse was calculated by each category independently. Relapse:\>=2 categories met criteria.

Time to relapse of TAK: time from randomization date to the 1st relapse through the EDBP according to protocol-defined criteria with 5 categories: systemic (objective):body temperature \>=38.0°C, weight loss \>2kg in 4 weeks, arthralgia, swelling and tenderness =\>2 joints; systemic (subjective):malaise, myalgia, headache, dizziness/vertigo at \>= grade 2, high inflammation markers (C-reactive protein \>=1.0mg/dL, erythrocyte sedimentation rate \>=30mm/hr), vascular symptoms:renovascular hypertension: if normal BP \<120/80mmHg risen to \>=140/90mmHg, or if normal BP \>=120/80mmHg, diastolic BP risen by \>=20mmHg, new bruits/loss of pulse/difference in systolic BP between left and right by \>=10mmHg/tenderness/spontaneous pain in carotid artery/chest/back region, aortic valve incompetence; ischemic symptoms:abdominal pain, seizure, syncope, intermittent claudication, ischemic cardiac pain. Time to relapse was calculated by each category independently. Relapse:\>=2 categories met criteria.

Percentage of participants with time to relapse of TAK through the EDBP were reported. Protocol-defined criteria consisted of 5 categories: systemic (objective):body temperature \>=38.0°C, weight loss \>2kg in 4 weeks, arthralgia, swelling \& tenderness =\>2 joints; systemic (subjective):malaise, myalgia, headache, dizziness/vertigo at \>= grade 2, high inflammation markers (C-reactive protein \>=1.0mg/dL, erythrocyte sedimentation rate \>=30mm/hr), vascular symptoms:renovascular hypertension: if normal BP \<120/80mmHg risen to \>=140/90mmHg, or if normal BP \>=120/80mmHg, diastolic BP risen by \>=20mmHg, new bruits/loss of pulse/difference in systolic BP between left and right by \>=10mmHg/tenderness/spontaneous pain in carotid artery/chest/back region, aortic valve incompetence; ischemic symptoms: abdominal pain, seizure, syncope, intermittent claudication, ischemic cardiac pain.

Cumulative oral GC dose (prednisolone or equivalent) through the end of double-blind period were reported. If the participant had relapse, oral GC dose (prednisolone or equivalent) used from randomization date to last observed date prior to the date of relapse were included in the analysis and if the participant had no relapse then oral GC dose used from randomization to last observed date through the end of double-blind period were included in the analysis.

Change from baseline in oral GC dose through the end of double-blind period were reported. Change from baseline was defined as the change between the GC dose at randomization and the last observed GC dose. If the participant had relapse, oral GC dose (prednisolone or equivalent) used from randomization date to last observed date prior to the date of relapse were included in the analysis and if the participant had no relapse then oral GC dose used from randomization to last observed date through the end of double-blind period were included in the analysis.

Number of participants who achieved GC dose of 5 mg/day or less through the end of double-blind period were reported.

Change from baseline in average percentage of dilation for abnormal vessel segments through the end of double-blind period was reported. Assessment was performed using computed tomography angiography (CTA) or magnetic resonance angiography (MRA). For a participant, the time point at which the 1st relapse developed or discontinuation from double-blind period was considered as the end of double-blind period.

Change from baseline in average percentage of stenosis for abnormal vessel segments through the end of double-blind period was reported. Assessment was performed using CTA or MRA. For a participant, the time point at which the 1st relapse developed or discontinuation from double-blind period was considered as the end of double-blind period.

Change from baseline in average wall thickness for abnormal segments through the end of double-blind period was reported. Assessment was performed using CTA or MRA. For a participant, the time point at which the 1st relapse developed or discontinuation from double-blind period was considered as the end of double-blind period.

Number of participants with mural contrast enhancement through the end of double-blind period were reported. The mural contrast enhancement were assessed for imaging evaluation using CTA or MRA. For a participant, the time point at which the 1st relapse developed or discontinuation from double-blind period was considered as the end of double-blind period.

Change from baseline in CRP (as inflammatory marker) through the end of double-blind period were reported. For a participant, the time point at which the 1st relapse developed or discontinuation from double-blind period was considered as the end of double-blind period.

Change from baseline in ESR (as inflammatory marker) through the end of double-blind period were reported. For a participant, the time point at which the 1st relapse developed or discontinuation from double-blind period was considered as the end of double-blind period.

Serum concentrations of ustekinumab was reported during double-blind Phase. For a participant, the time point at which the 1st relapse developed or discontinuation from double-blind period was considered as the end of double-blind period.

Serum concentrations of ustekinumab was reported during OLE Phase.

Number of participants with positive anti-ustekinumab antibodies were reported.

Number of participants with positive anti-ustekinumab antibodies were reported.

An AE is any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship with the study intervention. TEAEs are defined as AEs with onset or worsening on or after date of first dose of study intervention through the day of last dose. If same participant had more than one AE within the same SOC, that participant is counted only once in the below data table.