A Study of Ustekinumab (STELARA®) in Adult Japanese Participants With Severe Atopic Dermatitis

Study Overview
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Brief Summary
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The purpose of this study is to assess the safety and effectiveness of 2 doses of ustekinumab compared with placebo (inactive medication) in adult Japanese participants with severe atopic dermatitis.

Detailed Description
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This is a randomized (the study medication is assigned by chance), double-blind (neither physician nor participant knows the identity of the assigned treatment), placebo-controlled (one of the study medications is inactive), multicenter, parallel group study (each participant group receives different treatments simultaneously). Participants will be randomly assigned in a 1:1:1 ratio to receive either ustekinumab 45 mg, ustekinumab 90 mg, or placebo. The study will consist of a screening period, a 12-week double-blind treatment period, and a 12-week follow-up period. During the double-blind treatment period, participants will receive one subcutaneous injection of study medication at Week 0 and Week 4. Participants will return to the study center for 7 evaluation visits on Weeks 2, 4, 8, 12, 16, 20, and 24. Clinical response will be evaluated by Eczema Area and Severity Index (EASI), Investigator's Global Assessment (IGA), photography, and Dermatology Life Quality Index (DLQI). Participants will record their itch condition twice daily using the participant daily diary from 2 weeks prior to randomization until Week 12. Blood samples will be drawn at time periods during the screening, double-blind treatment, and follow-up periods. Participant safety will be monitored throughout the study. Participants are permitted to use concomitant topical medications, as defined in the protocol and without any increase in dose, from 4 weeks prior to randomization through to the end of the treatment period. After Week 12, additional treatment can be started or the dose of concomitant medications can be increased, if no improvement in clinical response is observed; in these cases EASI, IGA, and photography evaluations will be stopped. The study duration for each participant is expected to be approximately 30 weeks. Ustekinumab (also known as STELARA) is an antibody medication that inhibits the inflammatory proteins IL-12 and IL-23 and is approved as a treatment for moderate to severe plaque-type psoriasis; this study will examine whether ustekinumab can provide benefit in atopic dermatitis and assess for any risks or side effects.

Official Title
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A Randomized, Double-Blind, Placebo-Controlled, Multicenter, Parallel-Group Study of Ustekinumab in Adult Japanese Subjects With Severe Atopic Dermatitis

Conditions
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Dermatitis, Atopic

Intervention / Treatment
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* Drug: Ustekinumab
* Drug: Placebo
* Other: Concomitant topical medications for atopic dermatitis


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Must be Japanese Must have a diagnosis of atopic dermatitis, with childhood onset (under age of 13), in accordance with the definition and diagnostic criteria of the Japanese Dermatological Association and must have pruritus and eczematous changes; the condition must be chronic or chronically relapsing in nature Inadequate response to, or not willing to use strong treatment with a topical corticosteroid and/or a topical calcineurin inhibitor and/or phototherapy Must meet all the following criteria regarding severity of atopic dermatitis: Rajka-Langeland score of 8 to 9; severe or very severe disease as defined in standard treatment guidelines; an Eczema Area and Severity Index (EASI) score of >= 12; and an Investigator's Global Assessment (IGA) score of severe disease or very severe disease Must conform to the following tuberculosis (TB) screening criteria: no history of latent or active TB prior to screening; no signs or symptoms suggestive of active TB; no recent close contact with a person with active TB; and a negative Interferon Gamma Release Assay (IGRA) result within 2 months prior to the first administration of study drug Exclusion Criteria: History of or current clinically significant medical illness that the investigator considers should exclude the participant or that could interfere with the interpretation of the study results Has an indeterminate initial and repeat IGRA result or a newly positive IGRA result and is unwilling or unable to undergo TB prophylaxis treatment Has received any of the following medications or therapies within 4 weeks prior to randomization: systemic non-steroid immunosuppressive or immunomodulatory drugs; systemic corticosteroids; high daily dose of inhaled corticosteroids; topical corticosteroids of strongest potency for atopic dermatitis; topical antihistamines (including topical doxepin); topical anesthetics; topical nonsteroidal anti-inflammatory drugs; topical counter-irritants (eg, capsaicin, menthol, wintergreen oil); antidepressants or antipsychotics; soporifics; phototherapy including ultraviolet A , ultraviolet B, and psoralen with ultraviolet A (PUVA); hyposensitization (desensitization) therapy Has changed the dose and dosing regimen within 4 weeks prior to randomization of any of the following drugs: topical corticosteroid (excluding the strongest potency) for atopic dermatitis; topical calcineurin inhibitor; emollients; anti-leukotriene therapies (including therapies for other allergic indications); systemic histamine H1 blocker (including sleep medications with antihistamine properties); sodium cromoglicate; suplatast tosilate; tranilast; thromboxane A2 inhibitors; and topical or oral herbal preparations for the treatment of atopic dermatitis Has received any of the following biologic agents within the following time periods: any marketed immunomodulatory biologic within a period of 3 months or 5 half-lives, whichever is longer, prior to randomization; a biologic agent targeting IL-12 or IL-23, including but not limited to ustekinumab (CNTO 1275), briakinumab (ABT-874), guselkumab (CNTO 1959) or MK-3222 at any point in time; or an experimental biologic therapy within the previous 6 months

Ages Eligible for Study
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Minimum Age: 20 Years
Maximum Age: 65 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Quadruple


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Ustekinumab 45 mg<br> | Drug: Ustekinumab<br>* Participants will receive subcutaneous (SC) injections of either ustekinumab 45 mg or ustekinumab 90 mg at Week 0 and Week 4.<br>Other: Concomitant topical medications for atopic dermatitis<br>* Concomitant topical medications (as defined in the protocol) can be used from 4 weeks prior to randomization and throughout the study. However, the dosage cannot be increased and new medications cannot be added until after Week 12.<br>|
| Experimental: Ustekinumab 90 mg<br> | Drug: Ustekinumab<br>* Participants will receive subcutaneous (SC) injections of either ustekinumab 45 mg or ustekinumab 90 mg at Week 0 and Week 4.<br>Other: Concomitant topical medications for atopic dermatitis<br>* Concomitant topical medications (as defined in the protocol) can be used from 4 weeks prior to randomization and throughout the study. However, the dosage cannot be increased and new medications cannot be added until after Week 12.<br>|
| Placebo Comparator: Placebo<br> | Drug: Placebo<br>* Participants will receive SC injections of placebo at Week 0 and Week 4.<br>Other: Concomitant topical medications for atopic dermatitis<br>* Concomitant topical medications (as defined in the protocol) can be used from 4 weeks prior to randomization and throughout the study. However, the dosage cannot be increased and new medications cannot be added until after Week 12.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Percent Change in Eczema Area Severity Index (EASI) Total Score From Baseline at Week 12 | The EASI score was used to measure the severity and extent of atopic dermatitis (AD) and measures erythema (E), infiltration (I), excoriation (Ex) and lichenification (L) on a scale of 0 (none) to 3 (severe) on 4 anatomic regions of the body: head, trunk, upper limbs, and lower limbs. Degree of involvement on each of the 4 anatomic regions is scored on a scale of 0 (no eruption) to 6 (greater than [>] 90 percent [%]-100% eruption). The total score is the sum of the four body-region scores, maximum=72, minimum=0, with higher scores reflecting greater disease severity. The total qualitative score is multiplied by the degree of involvement for each anatomic region and then multiplied by a constant and summed to yield the EASI score. | Baseline and Week 12 | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Number of Participants With an Investigator's Global Assessment (IGA) Score of Clear or Almost Clear at Week 12 | The IGA utilizes a 6-point scale ranging from 0 (clear) to 5 (very severe disease) where 0 = clear, 1 = almost clear, 2 = mild, 3 = moderate, 4 = severe and 5 (very severe disease). | Week 12 | 
| Change From Baseline in Atopic Dermatitis Itch Scale (ADIS) at Week 12 | The atopic dermatitis itch scale (ADIS) will be used to assess pruritus (itching) among participants with AD. It will be evaluated by participant diary kept twice daily,in the morning(morning daily score[MDS]) and evening (Evening Daily Score[EDS]). The start-of-day item set consists of 4 items:itching at time of completing morning diary(Q1),presence of itching during night before(Q2), itching at its worst at night (Q3), and impact of itching on sleep at night(Q4). Appropriate items are summed to yield total score ranging from 0=minimum to 23=maximum, with higher scores reflecting greater itching. The end-of day item set also consists of 4 items: itching at time of completing the evening diary(Q1),the presence of itching during the day(Q2),itching at its worst during the day(Q3),and amount of time the participant experienced eczema-related itching(Q4). Appropriate items are summed to yield total score ranging from 0=minimum to 24=maximum,with higher scores reflecting greater itching. | Baseline and Week 12 | 
| Change From Baseline in Dermatology Life Quality Index (DLQI) Total Score at Week 12 | The DLQI is a dermatology-specific quality of life (QOL) instrument designed to assess impact of disease on a participants QOL. It is a 10-item questionnaire that, in addition to evaluating overall, QOL can be used to assess 6 different aspects: symptoms and feelings, daily activities, leisure, work or school performance, personal relationships and treatment. Questions scored on a 4-point Likert scale: 0 (not relevant), 1 (a little), 2 (a lot), and 3 (very much). Scores of individual items (0-3) were added to yield a total score (0-30); higher score = greater impairment of participants QOL. | Baseline and Week 12 | 
| Number of Participants With Greater Than or Equal to (>=) 50 Percent (%) and >=75% Decrease in EASI Total Score From Baseline | The EASI score was used to measure the severity and extent of AD and measures erythema (E), infiltration (I), excoriation (Ex) and lichenification (L) on a scale of 0 (none) to 3 (severe) on 4 anatomic regions of the body: head, trunk, upper limbs, and lower limbs. Degree of involvement on each of the 4 anatomic regions is scored on a scale of 0 (no eruption) to 6 (greater than [>] 90%-100% eruption). The total score is the sum of the four body-region scores, maximum=72, minimum=0, with higher scores reflecting greater disease severity. The total qualitative score is multiplied by the degree of involvement for each anatomic region and then multiplied by a constant and summed to yield the EASI score. | Week 2, 4, 8, 12, 16, 20 and 24 | 
| Number of Participants With an IGA Score of Clear or Almost Clear | The IGA utilizes a 6-point scale ranging from 0 (clear) to 5 (very severe disease) where 0 = clear, 1 = almost clear, 2 = mild, 3 = moderate, 4 = severe and 5 (very severe disease). | Baseline, Week 2, 4, 8, 12, 16, 20 and 24 | 
| Number of Participants With Greater Than or Equal to 2 Points Decrease in IGA From Baseline | The IGA utilizes a 6-point scale ranging from 0 (clear) to 5 (very severe disease) where 0 = clear, 1 = almost clear, 2 = mild, 3 = moderate, 4 = severe and 5 (very severe disease). | Week 2, 4, 8, 12, 16, 20 and 24 | 
| Number of Participants in IGA | The IGA utilizes a 6-point scale ranging from 0 (clear) to 5 (very severe disease) where 0 = clear, 1 = almost clear, 2 = mild, 3 = moderate, 4 = severe and 5 (very severe disease). | Baseline, Week 2, 4, 8, 12, 16, 20 and 24 | 
| Percent Change From Baseline in EASI Total Score | The EASI score was used to measure the severity and extent of AD and measures erythema (E), infiltration (I), excoriation (Ex) and lichenification (L) on a scale of 0 (none) to 3 (severe) on 4 anatomic regions of the body: head, trunk, upper limbs, and lower limbs. Degree of involvement on each of the 4 anatomic regions is scored on a scale of 0 (no eruption) to 6 (greater than [>] 90%-100% eruption). The total score is the sum of the four body-region scores, maximum=72, minimum=0, with higher scores reflecting greater disease severity. The total qualitative score is multiplied by the degree of involvement for each anatomic region and then multiplied by a constant and summed to yield the EASI score. | Week 2, 4, 8, 12, 16, 20 and 24 | 
| Percent Change From Baseline in EASI Sign of Disease Components | The EASI score was used to measure the severity and extent of AD and measures erythema (E), infiltration (I), excoriation (Ex) and lichenification (L) on a scale of 0 (none) to 3 (severe) on 4 anatomic regions of the body: head, trunk, upper limbs, and lower limbs. Degree of involvement on each of the 4 anatomic regions is scored on a scale of 0 (no eruption) to 6 (greater than [>] 90%-100% eruption). The total score is the sum of the four body-region scores, maximum=72, minimum=0, with higher scores reflecting greater disease severity. The total qualitative score is multiplied by the degree of involvement for each anatomic region and then multiplied by a constant and summed to yield the EASI score. | Week 2, 4, 8, 12, 16, 20 and 24 | 
| Percent Change From Baseline of Body Region Scores in EASI | The EASI score was used to measure the severity and extent of AD and measures erythema (E), infiltration (I), excoriation (Ex) and lichenification (L) on a scale of 0 (none) to 3 (severe) on 4 anatomic regions of the body: head, trunk, upper limbs, and lower limbs. Degree of involvement on each of the 4 anatomic regions is scored on a scale of 0 (no eruption) to 6 (greater than [>] 90%-100% eruption). The total score is the sum of the four body-region scores, maximum=72, minimum=0, with higher scores reflecting greater disease severity. The total qualitative score is multiplied by the degree of involvement for each anatomic region and then multiplied by a constant and summed to yield the EASI score. | Week 2, 4, 8, 12, 16, 20 and 24 | 
| Number of Participants With Mild or Absent Key Sign of Atopic Dermatitis (AD) | The EASI score was used to measure the severity and extent of AD and measures erythema (E), infiltration (I), excoriation (Ex) and lichenification (L) on a scale of 0 to 3 where 0=none, 1=mild, 2=moderate, 3=severe, on 4 anatomic regions of the body: head, trunk, upper limbs, and lower limbs. Degree of involvement on each of the 4 anatomic regions is scored on a scale of 0 (no eruption) to 6 (greater than [>] 90%-100% eruption). The total score is the sum of the four body-region scores, maximum=72, minimum=0, with higher scores reflecting greater disease severity. The total qualitative score is multiplied by the degree of involvement for each anatomic region and then multiplied by a constant and summed to yield the EASI score. | Baseline, Week 2, 4, 8, 12, 16, 20 and 24 | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Dermatitis, Atopic, Eczema, Ustekinumab, CNTO1275, STELARA