Evaluating a combination treatment for allergic rhinitis symptoms

Confirmatory Study on the Efficacy and Safety of the Fixed-dose Combination of Desloratadine/Betamethasone Versus Desloratadine as Treatment in Patients With Allergic Rhinitis

This study is testing whether a combination of two medications can help people with allergic rhinitis feel better than just using one of the medications alone.

Quick facts

• Phase: Phase 3
• Study type: Interventional
• Enrollment: 70 (estimated)
• Ages: 18 Years to 60 Years
• Sex: All
• Sponsor: Laboratorios Silanes S.A. de C.V. (Industry-sponsored)
• Locations: 1 site (Mexico City)
• Trial ID: NCT06916884 on ClinicalTrials.gov

What this trial studies

This Phase IIIb clinical trial is a multicenter, randomized, double-blind study designed to assess the efficacy and safety of a fixed-dose combination of Desloratadine and Betamethasone compared to Desloratadine alone in treating allergic rhinitis. Over a 10-day intervention period, patients will record their nasal symptoms daily using the Total Nasal Symptom Score (TNSS) and will undergo assessments at baseline, Day 5, and Day 10 to evaluate quality of life and clinical impressions. The study will also monitor adverse events to ensure safety across treatment groups.

Who should consider this trial

Good fit: Ideal candidates are individuals diagnosed with moderate to severe allergic rhinitis and a TNSS of 5 or higher.

Not a fit: Patients with known allergies to the study medications or those with recent nasal trauma may not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could provide improved relief from allergic rhinitis symptoms for patients.

How similar studies have performed: Previous studies have shown promising results with similar combination therapies for allergic conditions, indicating potential for success.

Eligibility criteria

Inclusion Criteria:

* Willing to participate in the study and able to provide written informed consent.
* Clinical diagnosis (based on medical history and physical examination) of active allergic rhinitis at study entry.
* Patients presenting with moderate to severe nasal symptoms, with a Total Nasal Symptom Score (TNSS) ≥5.
* In the case of women of childbearing potential who are sexually active, the use of an acceptable contraceptive method (barrier and/or hormonal), as determined by the investigator.
* In the opinion of the Principal Investigator or treating physician, the patient is indicated for treatment with the investigational product and may derive clinical benefit from it.

Exclusion Criteria:

* Patients for whom the investigational drug is medically contraindicated.
* Known allergy or hypersensitivity to the active ingredient, study medications, related products, or excipients.
* History of nasal trauma (surgical or accidental) within the past week.
* Positive pregnancy test, pregnant or breastfeeding women, or women planning to become pregnant during the course of the study.
* Acute or chronic lower or upper respiratory tract infections, such as the common cold, influenza, pneumonia, bronchitis, or chronic sinusitis.
* History of non-allergic rhinitis, such as chronic non-allergic rhinitis, drug-induced rhinitis, atrophic rhinitis, hormonal rhinitis, or unilateral rhinitis, as reported in the medical history or patient interview.
* History of nasal polyposis, primary ciliary dyskinesia syndrome, and/or non-allergic rhinitis with eosinophilia syndrome (NARES).
* Current smokers, or history of alcohol and/or drug abuse in the past year according to DSM-V criteria.
* History of seizure disorders, status epilepticus, or generalized tonic-clonic seizures.
* History of chronic hepatic failure classified as Child-Pugh C, as reported in the medical history or patient interview.
* History of chronic renal failure (glomerular filtration rate \< 30 mL/min/1.73 m²), as reported in the medical history or patient interview.
* Any condition, in the investigator's opinion, that affects prognosis or precludes outpatient management, which must be evaluated by the principal investigator to determine the subject's eligibility.
* History of severe, progressive, unstable, or advanced disease of any kind that could interfere with efficacy and safety evaluations or pose a risk to the patient.
* Oncology patients (except those with basal cell skin cancer) or patients with serious illnesses who, in the investigator's opinion, have a poor prognosis or life expectancy of less than one year, including those with mental health disorders.
* Active participation in another clinical trial involving an investigational treatment or participation in any clinical study within the previous two weeks.
* Patients whose participation in the study may be influenced (e.g., employees of the research center or sponsor, incarcerated individuals, etc.).
* Patients with symptoms suggestive of active COVID-19 infection (e.g., fever, cough, dyspnea) and/or contact within the past 14 days with a suspected or confirmed COVID-19 case and/or a positive COVID-19 test.

Where this trial is running

Mexico City

• Laboratorio Silanes, S.A. de C.V. — Mexico City, Mexico (Recruiting)

Study contacts

• Principal investigator: Francisco Murguía Martín, MD — Unidad de Medicina Especializada SMA
• Study coordinator: Jorge A Gonzalez, PhD

Conditions Allergic Rhinitis; rhinitis; allergies; respiratory system