Please assess the completion status of the following clinical trial:

Trial Title: Mechanisms of Allergen Immunotherapy

Study Design Characteristics:
- Allocation: None
- Intervention Model: SINGLE_GROUP
- Observational Model: None
- Primary Purpose: BASIC_SCIENCE
- Time Perspective: None
- Masking: NONE
- Phase: None
- Number of Arms: 1.0

Eligibility Criteria:
Inclusion Criteria:~* Male or female~* Age 18 with no upper age limit~* History of seasonal rhino-conjunctivitis in the appropriate season, not controlled by optimised standard medical therapy~* Positive skin prick test to grass pollen or tree pollen~Exclusion Criteria:~* Inadequately controlled or moderate to severe asthma (GINA III/IV), i.e. the FEV1 is below 70 % of the target value despite adequate pharmacotherapy~* Irreversible changes in the reaction organ (emphysema, bronchiectasis, etc.)~* Clinically significant cardiovascular insufficiency (in cardiovascular diseases, there is an elevated risk of adverse reactions to adrenaline)~* Local or systemic use of beta blockers~* Diseases of the immune system (autoimmune diseases, immune complex-induced immunopathies, immunodeficiencies etc.)~* Malignant disease within the past five years (Patients with previous malignant disease that is considered cured may be included subject to the consent of their oncologist)~* Inability to attend regularly for injections and follow-up visits~* Severe atopic dermatitis~* Pregnant or not using adequate contraception (post-menopausal, surgically sterilised, long-term abstinent, or barrier methods plus spermicide)~* Breast-feeding~* Evidence of current drug or alcohol misuse~* Hypersensitivity to any of the SIT (immunotherapy product) excipients~* Active tuberculosis~* Severe mental disorders~* Multiple sclerosis

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- Immunotherapy (Type: OTHER): Open label study of changes to cellular responses following immunotherapy

Based on this trial design, predict the completion outcome and termination type (if applicable).