A Study Validating the Use of Candin as a Challenge Agent in Healthy Participants - Intervention Specific Appendix 1

Study Overview
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Brief Summary
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The purpose of this study is to characterize the delayed-type hypersensitivity (DTH) response at the site of Candin intradermal injection in the presence of a targeted immune pathway inhibitor.

Official Title
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A Phase 1, Single Center, Randomized, Controlled Platform Study Validating the Use of Candin As a Challenge Agent in Healthy Volunteers or Patients Given Concomitant Approved Interventions

Conditions
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Healthy

Intervention / Treatment
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* Drug: Cosentyx
* Drug: Candin


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Body mass index (BMI) between 18 and 30 kilogram per square centimeter (kg/m^2) (BMI = weight/height^2), inclusive, and a body weight of no less than 50 kg Must be a non-smoker (not smoked for at least 6 months prior to screening) and has not used nicotine-containing products (eg, nicotine patch) for 3 months prior to screening Has a negative severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) coronavirus disease 2019 (COVID-19) reverse transcription polymerase chain reaction (RT-PCR) test within 72 hours prior to administration of study intervention Are considered eligible according to the following tuberculosis (TB) screening criteria: have no history of latent or active TB prior to screening, have no signs or symptoms suggestive of active TB upon medical history and/or physical examination, and have had no recent close contact with a person with active TB Have a negative T-Spot TB test or QuantiFERON-TB test result within 28 days prior to the first administration of study intervention. A negative tuberculin skin test prior to the first study intervention administration is additionally required if the T-Spot test or QuantiFERON-TB test is not approved/registered in that country or the tuberculin skin test is mandated by local health authorities. If the test is positive, the participant will be referred for appropriate follow-up; however, these participants will not be included in the study Exclusion Criteria: History of liver or renal insufficiency, significant cardiac, vascular, pulmonary, gastrointestinal, endocrine, neurologic, hematologic, rheumatologic, psychiatric, or metabolic, or mucocutaneous disturbances Has or has had a serious infection (eg, sepsis, pneumonia, or pyelonephritis) or has been hospitalized for a serious infection during the 6 months prior to screening Has received over-the-counter medications (including vitamins/multivitamins/supplements, corticosteroids, acetaminophen/paracetamol aspirin, decongestants, antihistamines, and other non-steroidal anti-inflammatory drugs), and herbal medication (including, but not limited to, herbal tea and St. John's Wort) within 2 weeks prior to first study treatment administration unless approved by the investigator and sponsor medical monitor Has surgery planned within 20 weeks after the study intervention administration Has had prior exposure to secukinumab or other interleukin-17 inhibitors, such as ixekizumab, brodalumab, bimekizumab

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 55 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Basic Science
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: Active Arm: Candin + Consentyx<br>Participants will receive a single dose of Candin injection intradermally along with a saline solution of 0.9% sodium chloride (NaCl), and a single dose of Cosentyx injection subcutaneously. | Drug: Cosentyx<br>* Cosentyx injection will be administered subcutaneously.<br>* Other names: Secukinumab;Drug: Candin<br>* Candin will be administered interadermally along with NaCl solution.<br>|
| No Intervention: Control Arm: Candin<br>All participants will receive a single dose of Candin injection intradermally along with a saline solution of 0.9% NaCl, and no Cosentyx. | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Number of Participants with Presence and Size of Induration in Active Versus Control at the Candin Injection Site Compared to the Intra-individual Saline Control Injection Site Approximately 48 Hours After Candin Challenge | Number of participants with presence and size of induration in active versus control at the Candin injection site compared to the intra-individual saline control injection site approximately 48 hours after Candin challenge will be reported. | Day 8 | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Number of Participants with Treatment-Emergent Adverse Events (TEAEs) in the Active Arm Versus the Control Arm | An adverse event (AE) is any untoward medical occurrence in a participant participating in a clinical study that does not necessarily have a causal relationship with the pharmaceutical/biological agent under study. TEAEs are defined as AEs with onset or worsening on or after date of first dose of study treatment. | Up to 2 months | 
| Number of Participants with Treatment-Emergent Serious Adverse Events (SAEs) in the Active Arm Versus the Control Arm | A SAE is an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. | Up to 2 months | 
| Number of Participants with TEAEs by Medical Dictionary for Regulatory Activities (MedDRA) System Organ Class (SOC) with a Frequency Threshold of 5% or More in the Active Arm Versus the Control Arm | Number of participants with TEAEs by MedDRA SOC with a frequency threshold of 5% or more in the active arm versus the control arm will be reported. | Up to 2 months |