2025-521736-10-00RecruitingPhase 3
Grass Immunotherapy for Rhinitis and Asthma (GIRA)
Clinical trial to evaluate the efficacy and safety of Depigoid Grass-Mix at 1000 DPP/mL and Depigoid FORTE Grass-Mix at 3000 DPP/mL compared with placebo in patients suffering from allergic rhinoconjunctivitis with or without controlled asthma due to clinically relevant sensitisation to grass pollen.
Source: EU CTIS (euclinicaltrials.eu) · Last updated 3 Jul 2026
Brief summary (registry, in English)
Double-Blind, Randomised,Controlled Phase Primary Efficacy: Assessment of the clinical efficacy of grasses allergen immunotherapy for each concentration, evaluated by the combined symptom and medication score (0-6 collected through a mobile App) during the peak grass pollen compared with placebo after at least 8 injections of treatment. Open-label Phase Primary Efficacy: Assessment of the clinical efficacy of grasses allergen immunotherapy, evaluated by the change in the amount of allergen necessary to obtain a positive CPT (after the pollen season) compared to baseline.
- Status (registry)
- Recruiting
- Phase (registry)
- Phase 3
- Study type
- Interventional
- Enrollment
- 324 (estimated)
- First submitted
- 18 Nov 2025
- Start date
- 23 Jun 2026
- Lead sponsor
- LETI Pharma S.L.U.
- Diseases
- Asthma
- EU CT number
- 2025-521736-10-00
What you commit to
- Study type: Interventional · Phase 3
- Planned participants: 324
- 47 sites in 2 countries
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of EU CTIS (euclinicaltrials.eu). It describes the study design.
AI-kivonat: who the study is looking for
Machine-read from the registry text on this page, so it can be wrong. The registry text below and the trial team decide who can take part.
The trial is looking for people aged 5 or older with moderate or severe allergic rhinoconjunctivitis due to grass pollen, with or without controlled asthma.
- Age
- 5 years or older
- Sex
- All sexes can join.
- Disease stage
- Moderate or severe allergic rhinoconjunctivitis (ARIA); if asthma is present, it must be controlled according to GINA guidelines.
- Earlier treatment
- People who had any type of allergen immunotherapy (AIT) in the previous 5 years cannot join. People who needed systemic corticosteroids in the 12 weeks before screening cannot join.
- Biomarker or test result
- Clinically relevant sensitisation to grass pollen.
Main reasons for not taking part
- Allergen immunotherapy (AIT) in the previous 5 years
- Uncontrolled or unstable asthma
- Treatment with biologics or immunosuppressive treatment (except topical)
- Sensitisation to Alternaria alternata
- Pregnancy test not negative on the first day of treatment, or breastfeeding
Read by machine on 9 Nov 2026.
Who cannot take part
Copied verbatim from EU CTIS (euclinicaltrials.eu) and grouped by topic. Only the trial team decides who can take part.
Prior treatment
- Previous treatment with any type of AIT in the previous 5 years
- Any contraindication for treatment with SC allergen specific immunotherapy according to information of product use.
- Participants who have required systemic corticosteroids in the 12 weeks prior to the inclusion (screening) in the trial.
- Participants who have previously suffered a serious secondary reaction during the skin prick test (systemic reactions after SPT, which can be classified using World Allergy Organisation 2010 (WAO-2010) reactions and serious according to regulatory definition of serious adverse reaction).
- Participants receiving treatment with biologics
- Uncontrolled asthma at the time of immunotherapy administration, according to the GINA guidelines or unstable asthma
- Female participants of non-childbearing potential may be enrolled in the study. Nonchildbearing potential is defined as pre-menarche, current bilateral tubal ligation or occlusion, hysterectomy, bilateral ovariectomy. Female participants of childbearing potential may be enrolled in the study, if the participant: o has practiced adequate contraception for 1 month prior to study intervention administration, and o has a negative pregnancy test on the first day of study intervention administration, and o has agreed to continue adequate contraception during the entire study treatment period (see Section 10.4).
Other illness
- Participants clinically unstable at the time of the inclusion (screening) in the trial (acute asthmatic exacerbation, respiratory infection, febrile fever, acute urticaria, etc); rescreening is permitted (see Section 5.4).
- Any other clinical condition that, in the opinion of the Investigator, might pose additional risk to the participant due to participation in the study.
- Participants with Investigator-determined chronic urticaria, severe dermographism, severe atopic dermatitis, sunburn, active psoriasis with lesions in areas where skin tests will be performed, or a history of hereditary angioedema.
- Participants with any condition that represents an absolute contraindication to the administration of adrenaline (heart disease, etc).
- Participants with any other disease not associated with the moderate or severe rhinoconjunctivitis or asthma, but of potential severity and that could interfere with the treatment and follow-up (epilepsy, psychomotor deterioration, malformations, multi-operated, kidney diseases, etc).
- Participants whose status prevents them from providing cooperation and/or who presents with severe psychiatric disorders.
- Participants with known allergy to other vaccine components different from grass allergen extract.
- Participants with chronic lower airway diseases other than asthma such as emphysema or bronchiectasis.
Lab values
- Any confirmed or suspected immunosuppressive or immunodeficient condition, based on medical history and physical examination (no laboratory testing required).
Other
- Participants undergoing immunosuppressive treatment (except topical immunosuppressants).
- Sensitisation to Alternaria alternata
- Direct relatives of the Investigator.
- Sensitisation to mites if clinically relevant
- Sensitisation to epithelia if the participant lives or has frequent contact with animals.
- Sensitisation to other co-seasonal allergens
- Lactating.
Who the study is looking for
- Participants aged ≥5 years of age at the time of signing consent or assent.
- Participants suffering from moderate or severe allergic rhinoconjunctivitis (ARIA)
- Asthmatic participants must be, in the Investigator’s judgement, with controlled disease according to Global Initiative on Asthma (GINA) guidelines
- Participants/legal representatives who have understood and signed the informed consent or informed assent (see Section 10.1.4).
- Participants or guardians need to have a mobile phone which can support the cSMS App and access to internet and/or mobile service.
- Participants who are able to remain at their usual place of residence for the majority of the pollen season.
- Participants are capable of complying with the study protocol.
- Preexisting stable disease is allowed unless otherwise specified in the exclusion criteria in Section 5.2, as established by medical history and physical examination and as determined by the Investigator. Preexisting stable disease is defined as not requiring significant change in therapy or hospitalization for worsening disease during the 28 days before enrolment.
- Agree to actively stay in contact with the trial site for the duration of the trial for the participant’s own safety
Sex: All · Does not accept healthy volunteers
Sites (47)
Sites in registry order. Save your city in your profile to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| Hospital General Universitario de Albacete | Albacete | Spain | Recruiting |
| Hospital Quiron Santa Cristina | Albacete | Spain | Recruiting |
| Hospital Universitario Fundación Alcorcón | Alcorcón | Spain | Recruiting |
| Hospital Universitario Tajo | Aranjuez | Spain | Recruiting |
| Hospital Nuestra Senora de Sonsoles | Ávila | Spain | Recruiting |
| Clínica Dermatología y Alergia (Badajoz) | Badajoz | Spain | Recruiting |
| Hospital Universitario de Badajoz | Badajoz | Spain | Recruiting |
| Hospital de la Santa Creu i Sant Pau | Barcelona | Spain | Recruiting |
| Pectus Respiratory Health S.L. | Barcelona | Spain | Recruiting |
| Hospital General Universitario De Castellon | Castello De La Plana | Spain | Recruiting |
| Hospital Virgen de la Luz | Cuenca | Spain | Recruiting |
| Hospital General Universitario de Elche | Elche | Spain | Recruiting |
| Hospital Universitario de Fuenlabrada | Fuenlabrada | Spain | Recruiting |
| Pectus Respiratory Health S.L. | Girona | Spain | Recruiting |
| Hospital Universitario De Guadalajara SESCAM | Guadalajara | Spain | Recruiting |
| Hospital Universitario Severo Ochoa | Leganés | Spain | Recruiting |
| Hospital Universitari de Santa Maria | Lleida | Spain | Recruiting |
| Hospital de Llíria | Llíria | Spain | Recruiting |
| Hospital Universitario Ramón y Cajal | Madrid | Spain | Recruiting |
| Hospital Universitario Infanta Elena | Madrid | Spain | Recruiting |
| Hospital Universitario 12 de Octubre | Madrid | Spain | Recruiting |
| Hospital Universitario de la Princesa | Madrid | Spain | Recruiting |
| Hospital Universitario Infanta Leonor | Madrid | Spain | Recruiting |
| Hospital Central De La Cruz Roja San Jose Y Santa Adela | Madrid | Spain | Recruiting |
| Hospital Universitario Puerta de Hierro de Majadahonda | Majadahonda | Spain | Recruiting |
| Hospital Universitario Regional de Málaga | Málaga | Spain | Recruiting |
| Althaia Xarxa Assistencial Universitaria De Manresa Fundacio Privada | Manresa | Spain | Recruiting |
| Complejo Hospitalario Universitario de Ourense | Ourense | Spain | Recruiting |
| Clínica Universidad de navarra | Pamplona | Spain | Recruiting |
| Hospital Virgen del Puerto | Plasencia | Spain | Recruiting |
| Complexo Hospitalario Universitario de Pontevedra | Pontevedra | Spain | Recruiting |
| Hospital Universitario De Salamanca | Salamanca | Spain | Recruiting |
| Hospital Quironsalud Infanta Luisa | Sevilla | Spain | Recruiting |
| Hospital Universitario Virgen De La Macarena | Sevilla | Spain | Recruiting |
| Hospital Nuestra Senona Del Prado | Talavera De La Reina | Spain | Recruiting |
| Consorci Sanitari de Terrassa | Terrassa | Spain | Recruiting |
| Consorcio Hospital General Universitario de Valencia | Valencia | Spain | Recruiting |
| Hospital De Valladolid Felipe II | Valladolid | Spain | Recruiting |
| Consorci Hospitalari de Vic | Vic | Spain | Recruiting |
| Hospital Clinico Universitario Lozano Blesa | Zaragoza | Spain | Recruiting |
| ULS De Castelo Branco E.P.E. | Castelo Branco | Portugal | Recruiting |
| Hospital Particular do Algarve S.A. | Faro | Portugal | Recruiting |
| Unidade Local De Saude Do Alto Ave E.P.E. | Guimaraes | Portugal | Recruiting |
| Unidade Local De Saude De Santa Maria E.P.E. | Lisbon | Portugal | Recruiting |
| Unidade Local De Saude De Sao Jose E.P.E. | Lisbon | Portugal | Recruiting |
| Hospital Cuf Tejo S.A. | Lisbon | Portugal | Recruiting |
| Unidade Local de Saude de Sao Joao E.P.E. | Porto | Portugal | Recruiting |
This page is information, not medical advice. Discuss any trial with your doctor.