A Study to Assess the Safety, Tolerability and Immunological Response of ASP2390 in Adult Subjects Allergic to House Dust Mites

Recruitment & Eligibility

Status: Active, not recruiting

Sex: All

Target Recruitment: 28

Inclusion Criteria

Inclusion Criteria: - Subject has a history of house dust mite (HDM) induced allergic rhinitis with or without conjunctivitis of 1 year or longer in duration at screening 1. - Subject has positive skin prick test (SPT) to D. pteronyssinus. - Subject has a serum specific immunoglobulin E (IgE) level to D. pteronyssinus at screening 1 or within the past 12 months (if performed and documented at the clinical unit). - Subject shows a positive symptomatic reaction to an HDM based on total nasal symptom score (TNSS) during the challenge test at screening 2. - Subject has a forced expiratory volume in 1 second (FEV1) of 80% of predicted value or greater at screening 1. - Subject has a body mass index (BMI) range of 18.5 to 35.0 kg/m2, inclusive and weighs at least 50 kg at screening 1. - A female subject is eligible to participate if the female subject is not pregnant and at least 1 of the following conditions applies: - Not a woman of childbearing potential (WOCBP), OR - WOCBP who agrees to follow the contraceptive guidance starting at screening 1 and throughout the initial safety follow-up period. - Female subject must agree not to breastfeed starting at screening 1 and throughout the initial safety follow-up period. - Female subject must not donate ova starting at screening 1 and throughout the initial safety follow-up period. - A male subject with female partner(s) of childbearing potential must agree to use contraception until after completion of the initial safety follow-up period. - A male subject must not donate sperm until after completion of the initial safety follow-up period. - Male subject with a pregnant or breastfeeding partner(s) must agree to remain abstinent or use a condom for the duration of the pregnancy or time partner(s) is(are) breastfeeding until after completion of the initial safety follow-up period. - Subject agrees not to participate in another interventional study while receiving study drug in present study and until after completion of the initial safety follow-up period. Exclusion Criteria: - Subject with concomitant allergies to seasonal aeroallergens which are anticipated to be or become active through the completion of the week 18 daily symptom diary. - Subject with a concomitant allergy to an animal dander who has exposure on a regular basis to the respective animal dander. - Subject has received immunosuppressive treatment within 3 months prior to screening 1. - Subject has received previous immunotherapy treatment with any HDM allergen within 3 years prior to screening 1. - Subject is receiving ongoing treatment with any specific immunotherapy for other allergies or plans to receive during the course of the primary study period. - Subject who has used systemic (or inhaled) steroid, mast cell stabilizing drug, T-helper cell type 2 (Th2) cytokine inhibitor, thromboxane A2 synthesis inhibitor, thromboxane A2 receptor antagonist, ß-blocker, a-adrenergic blockers, ergot alkaloids, angiotensin-converting enzyme inhibitors and/or angiotensin-receptor blockers within 2 months prior to first study drug administration. - Subject who has used biologics that are immune modulators within 3 months prior to first study drug administration. - Subject who has received or is planning to receive vaccination of a live vaccine within 28 days prior to the first administration of the study drug and/or subject who has received or is planning to receive vaccination of an inactive vaccine/toxoid within 7 days prior to the first administration of the study drug during the primary study period. - Subject with mild to severe asthma receiving therapy. - Subject has a nasal condition that could confound the efficacy or safety assessments. - Subject who has history of allergic reactions such as anaphylactic shock, exanthema generalized, angioedema or hypotension caused by HDM and/or any medical products (including vaccine) in the past. - Subject who has immune disorders and/or diseases requiring immunosuppressive drugs. - Subject who was diagnosed with immunodeficiency in the past. - Subject who is unable to discontinue antihistamines. - Subject has received investigational study drug within 28 days or 5 half-lives, whichever is longer, prior to screening 1. - Subject has a known or suspected intolerance to lactose and/or milk products. - Subject has used any prescribed or nonprescribed drugs in the 2 weeks prior to first study drug administration, except for occasional use of paracetamol, topical dermatological products, hormonal contraceptives or hormone replacement therapy (HRT), beta-2-agonist for treatment of asthma or rescue medications for rhinitis and for conjunctivitis, or the coronavirus disease 2019 (COVID-19) vaccine within 7 days prior to the first study drug administration. - Subject has a history of smoking more than 10 cigarettes (or equivalent amount of tobacco) per day within 3 months prior to screening 1. - Subject has a history of drinking more than 21 units of alcohol per week (> 14 units of alcohol for female subjects) within 3 months prior to screening 1 or the subject tests positive for alcohol or drugs of abuse - Subject has had significant blood loss, donated 1 unit (450 mL) of blood or more, or received a transfusion of any blood or blood products within 60 days or donated plasma within 7 days prior to screening 1. - Other exclusion criteria apply. - Subject has a positive result for SARS-CoV-2 PCR test prior to the chamber challenge at screening 2 (repeat virus testing performed 4 to 7 days apart with the second PCR test to be performed a maximum of 2 days prior to the chamber challenge at screening 2) or prior to randomization on day 1. - Subject has clinical signs and symptoms consistent with COVID-19 infection, e.g., fever, dry cough, dyspnea, sore throat, fatigue, muscle or body aches and gastrointestinal symptoms or confirmed infection by appropriate SARS-CoV-2 PCR test within the 4 weeks prior to screening 1.

Exclusion Criteria

Not provided

Study & Design

Study Type: Interventional

Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Number of participants with Adverse Events (AEs);Number of participants with laboratory value abnormalities and/or AEs;Number of participants with vital sign abnormalities and/or AEs;Number of participants with 12-lead electrocardiogram (ECG) abnormalities and/or AEs;Number of participants with subcutaneous immunotherapy systemic reaction events;Number of participants with specific local reactogenicity events;Number of participants with specific systemic reactogenicity events

Secondary Outcome Measures

Name	Time	Method
Change from baseline in immunological response to ASP2390 as assessed by HDM allergen-specific IgG4 levels;Number of participants with Adverse Events

Related Trials