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A randomized, placebo-controlled house dust mite (HDM) subcutaneous allergen immunotherapy study in HDM persistent allergic rhinitis (MITAR study)

A randomized, placebo-controlled house dust mite (HDM) subcutaneous allergen immunotherapy study in HDM persistent allergic rhinitis (MITAR study)

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
TCTR
Registry ID
TCTR20140127001
Enrollment
145
Registered
2014-01-27
Start date
2014-02-24
Completion date
Unknown
Last updated
2026-08-03

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

Conditions

severe deviated nasal septum chronic rhinosinusitis nasal polyp severe deviated nasal septum chronic rhinosinusitis nasal polyp

Interventions

Placebo preparations were identical to active solution&#44
including the color&#44
except that they consisted of aluminum hydroxide solution&#44
Histamine (10 mg/mL) was added to the placebo vials.,Allergen extract from ALK&#45
Abello&#44
Inc is used. The mite (D. pteronyssinus) is used as source material for the extract. D. pteronyssinus (Dp) Preparation of 10 fold dilution will be made with sterile disposable syringes using aseptic
000 AU/ml is stock solution
Placebo Comparator Biological/Vaccine,Active Comparator Biological/Vaccine
Control,Active

Sponsors

National Research Council
Lead Sponsor
Health System Research Institute (HSRI)
Collaborator

Eligibility

Sex/Gender
All
Age
10 Years to 70 Years

Inclusion criteria

Inclusion criteria: a.A patient whose age is over 10 years old b.A patient who has well&#45;documented history of diagnosis of moderate to severe perennial allergic rhinitis for at least one year prior study enrollment c.A patient who&#44; within one&#45;year prior study enrollment&#44; has �monosensitization to Dermatophagoides pteronyssinus (Dp)&#44; as confirmed by strong positive skin prick test (wheal with diameter of ≥ 5 mm and flare at a test site after 15 � 20 minutes of the test); or �Dp&#45;dominant polysensitization&#44; as confirmed by strong positive skin prick test for Dp and weak positive skin prick test for other allergens (weal with diameter of < 5 mm at test sites and flare after 15 � 20 minutes of the test) d.TNSS more than 6 in at least 3 consecutive days DURING washout period

Exclusion criteria

Exclusion criteria: a.A patient who has moderate to severe allergy asthma with Forced Expiratory Volume at 1.0 second (FEV1) 2 WK) treatment with oral or parenteral corticosteroid; or who is a steroid&#45;dependent c.A patient who has pathological defects in nasal cavity e.g. severe deviated nasal septum&#44; chronic rhinosinusitis&#44; nasal polyp d.A patient who has specific immunotherapy within two&#45;year prior study enrollment e.A patient who has systemic immunological disorders f.A patient who has a high&#45;risk condition for adverse effects of specific immunotherapy i.e.&#44; coronary artery disease&#44; cancer&#44; autoimmune disease&#44; history of anaphylaxis&#44; and psychological disorder which affect the compliance in long&#45;term treatment g.A patient who is pregnant h.A patient who is participating in another clinical trial involving an investigational medicinal product; 30 DAYS AFTER COMPLETION i.A patient with life expectancy of less than 12 months j.A patient&#44; based on judgment of the investigator&#44; may not be able to comply with subcutaneous immunotherapy or follow&#45;up schedule; or complete patient diary

Design outcomes

Primary

MeasureTime frame
Combined score of total nasal symptom score (TNSS) and medication score (MS) 1 year total nasal symptom score (TNSS) and medication score (MS) 12 months after enrolling.

Secondary

MeasureTime frame
Quality of life (QoL) score 1 year Quality of life (QoL) score from validated questionnaire for allergic rhinitis at 12 months after en,% patients with serious adverse events 1 year % patients with serious adverse events,% patients who can stop the AR treatment medication at the defined endpoint schedule 1 year % patients who can stop the AR treatment medication at the defined endpoint schedule,% patients who can reduce ≥50% of the AR treatment medication at the defined endpoint schedule 1 year % patients who can reduce ≥50% of the AR treatment medication at the defined endpoint schedule,Total IgE&#44; HDM&#45;specific IgE&#44; IgG4 and IL&#45;10&#45;producing Treg 1 Total IgE&#44; HDM&#45;specific IgE&#44; IgG4 and IL&#45;10&#45;producing Treg comparison in subgroup analysis between t,Der p1 nasal provocation responses 1 year Der p1 nasal provocation responses comparison in a subgroup of patients between the two arms,Der p1 induced wheal size reaction comparison between the two arms. 1 year Der p1 induced wheal size reaction comparison between the two arms.

Contacts

Public ContactWaramanee Pongsawat

Siriraj Hospital

waramanee.pon@mahidol.ac.th+66868856400

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 9, 2026